Mercedes W204 W212 C E Class Repair Scolling Knob COMAND Console Control Wheel Command

[@gterez]

Thank you for this fantastic video Scott! :-) For anyone trying to do this on the newer version of this knob, the one with the 12 vertical lines around it (used in the W204 2011 facelift and newer models like the W212): THE METAL RING IS NOT REMOVABLE AS SHOWN IN THE VIDEO, IT IS PERMANENTLY ATTACHED TO THE KNOB. The way to access the screw is to ONLY REMOVE THE CAP of the knob. It is lightly glued on, so warm it up with a hair dryer first and then use a suction cup to lift it out. Do not attempt to pry it out as there's no gap and you will damage its metal top and/or the metal ring.

[@johnparsons5010]

Scott, I can't thank you enough. Your video is excellent. I'm an avid DIYer on my MB but never would have figured out how to disassemble this controller without breaking it, in particular the knob ring at the start. To encourage others when tackling the first step I'll mention that the knob's outer "grip ring" and its inner base are real metal, not plastic, and I used a tiny flat head screw driver to merely pry very carefully but intently just at it's edge, as you've demonstrated. You're my COMAND knob DIY hero! Please keep sharing the great vids and fighting the good fight against waste and high prices.

[@ScottElliott152]

+John Parsons Gee thanks John ... i feel very humbled! I'm pleased I could help out. I hate seeing fellow citizens being gouged, raped and burnt at the stake by the dealer network. I also despise the waste and planned obsolescence in this consumer society. It's a complete contradiction to the notion we should be reducing our carbon footprint when corporations are forcing people to buy replacements because they've been designed to fail early. Step of soap box ... LOL Regards, Scott

[@johnparsons5010]

Glad you're reusing that soap box. Step on it often enough and help change the world for the better, Scott!

[@ScottElliott152]

We're on the same page John ... I think guys like you and I have to spread the word and step on that soap box and remind people how twisted the consumer society has become. It's getting people to take a moment to think about what they're doing. I'm just preparing a video on retrofitting factory cruise control to the W639 Vito. Dealer quote about $1500 for the kit, installation and activation with STAR. We did the retrofit to my mates Vito in 1.5 hours for a total cost of about $60! I have STAR 2011-01. We plugged the van in and it took 5 minutes to activate. We drove out of the man cave and it worked perfectly ... both the CC and the speed limiting. The CC stalk is a common part used in many models including the W203 so it's easy to get from wrecking/breaking online eBay stores. You don't need the factory retrofit kit. Also there's no SCN coding or anything fancy to activate ... which is what the dealers tell you. You go into STAR and basically turn it on. I'd better stop because I'm starting to rant! :-)

[@harolddsouza9643]

Can't thank you enough Scott for this awesome video.The dealership here in Toronto quoted me $CAD 1400 to fix my 2011 E350. I stopped going to the dealership as soon as my warranty expired 3 years ago. I'm a DIY'er and love the satisfaction of fixing things. Your video helped me save that money and I really appreciate you taking the time to make this video. The next thing on my list is to fix the auto seat belt tensioner that has been bust for over 3 years now. A big THANK YOU once again from Canada.

[@ScottElliott152]

Thanks Harold from Canada. I was quoted a similar amount by my local dealer plus a whole lot of nonsense about removing the dashboard and having to reprogram the car! That's when I decided to take control. I've since replaced the shaft with a 3d printed item so I expect that will last me out. Also know that Australia was singled out to be sacrificed on the global warming alter. I've never witnessed such extreme media reporting that no doubt extended to Canada. The world media created a lot of damage to our economy by scaring the living daylights out of potential tourists. People overseas thought the entire country was in flames when it was a small percentage in macro terms. The recent bushfires were bad but they weren't unprecedented and weren't the worst. Just over 10 years ago we lost about 170 people during the annual fire season. Australia is a land of heat, droughts, fires and flooding rains. It's always been this way since recorded history. Just thought I'd let a Canadian know what's going on from the perspective of an Australian on the ground. Also the bush is recovering quickly as many species require the fire and smoke to germinate. Some parts are really green now but the MSM will never report it. Pass it on to your friends and work colleagues.

[@SierraOne]

This is exactly what KZbin is for! Scott thanks so much for taking the time to record this instruction. I was able to repair my wheel and saved myself 529.00 US Dollars. Better than replacement or used replacement. Better than NEW!!

[@ynotsun31]

Scott, great video. Thanks! I replaced it with the aluminum shaft sold on eBay for US$30. This way, you would never have to worry about it breaking again. As a side note, ALL 10 T10 torx screws need to be removed prior to separating the 2 halves. You also need to purchase an integrated T10 screwdriver as the bits will not fit in the small holes.

[@ScottElliott152]

Alex thanks for the feedback. Yes the alloy shaft will last the life of the car so is the easiest option now. Of course no one was selling them when I made the video. If mine breaks again it will be the alloy version for me.

[@ronakpatel4212]

Thanks a lot Scott! I should have read the comments from others below on how to unclip the wire by removing the carpet, but your instructions were so fantastic that I was able to complete all steps with the module still plugged in. Really appreciate you putting the time into this video. Saved me $350! Drinks on me if you are ever here in Florida! Cheers!

[@ScottElliott152]

happy to help Ronak. I have done an appendix video with a link demonstrating how to pull down the carpet to get to the clip.

[@slatermethuen]

Many thanks Scott. Another one here who has saved a load of money by following your instructions. I decided to buy the replacement spindle from a guy in Germany who creates them on a 3D printer (check Ebay). I also replaced the spindle in-situ, thus avoiding the need to cut any cables. Took about half an hour. I also followed your other instructions for fixing the rear light earthing issue. That also took half an hour. I dread to think how much these two simple jobs would have cost at the main stealers. If you're ever in Southampton, England, I owe you a pint.

[@ScottElliott152]

+Andrew Spencer Thanks Andrew. I love English beer ... the first time I had a pint in Woodstock just out of Oxford I couldn't get the grin off my face. I saw the guy selling the 3D printed shafts. That's the way to go for sure. The earthing issue is a disgrace. MB won't admit there's a problem. I read on the Benzworld forum of a guy who lost his two cars, BMW motorcycle and house because his W204 went up in flames due to the rear tail light.

[@slatermethuen]

+Scott Elliott The earthing issue is a disgrace. I noticed a burning smell coming from my boot. When I looked closer I found that the overheating earth cable had melted through the case of the medical kit. This area is close to the petrol filler... There seems to have been a recall in the US, but when I contacted MB UK customer services they denied there was a known issue. They gave me an incident form to fill out and may have have done a goodwill fix if I'd pushed things. However, I figured they'd just replace the light unit without fixing the earth cable so I reckoned it would be easier and safer to fix it myself. Do you think I should also do the LHS of the car as well? That side doesn't seem to show any visible signs of overheating.

[@ScottElliott152]

yes definitely do both sides. In the US & Canada all they do is replace the burnt and melted parts with the exact same parts. That's what they do in your case. If they changed anything they'd be admitting there's a design fault. When you read the text of the US/Canada recall they're saying the problem is due to the environment the car's being used in thus they've turned it around to the owner. It has their corporate lawyers grubby mits all over it.

[@kchow5683]

Thanks Scott! Just did the fix also...you're saving people money all over the world! Christian's comment earlier (US model) about the wire looping around a plastic tab was helpful as well. Like him I also refitted the wire to the connector on the circuit board, no soldering needed. Very happy, so thanks again Scott!

[@ScottElliott152]

+K Chow Great work. I'm glad I could help. Kind regards, Scott

[@andreasfaust5197]

Hello Scott. Thank you for this very helpful movie. One week ago my scrolling knob fails and I asked my mercedes dealer to replace it. Then I saw your video. And it was the same failure, the shaft was broken. Repairing to 30 mins and saved appx. 350 Euros. Perfekt. Thank you! The face from the manager was a little bit funny as I told him that I fixed it by myself ;-)

[@ScottElliott152]

Andreas ... that's a great story. I wish I could have seen the look on the Service Managers face! He would have been stunned I'm sure.

[@Redshiftdigital]

Just wanted to say a big Thank You Scott for this video. I replaced it with an aluminum part that I found on Amazon. All for 53 bucks, my time and skills and knowledge gained.

[@ScottElliott152]

Thanks Harold. I've since replaced my shaft. A friend has a 3D printer so we made a new plastic one. It will see me out.

[@Rade730]

Mr. Scott Elliott, i want to thank you for your step by step video on how to replace this Scolling Knob it saved me alot of money.. again i cant express how great full i am

[@ScottElliott152]

+Rade Ace 'I'm happy to help. Regards, Scott

[@MostlyElectrolytes]

Perfect instructions. After opening it up and looking at the shaft it's just amazing how poorly engineered that piece was and I can't imagine a scenario where it wouldn't fail eventually. I don't know how I would have gone about opening it up if it wasn't for this video....thank you isn't enough!

[@ScottElliott152]

+ashasha3 Thanks for the compliment. Planned obsolescence in action to increase revenue. That's the only thing it can be. Regards, Scott

[@garyls9096]

Hi Scott, Got to thank you for both your brilliant videos on first how to remove it from the console then to repair it. Each step was accurate and easy to follow and took me about 4hrs in total, of which 1 of those was waiting for the glue to go off. Mercedes quoted me £585.00 plus VAT to replace, my cost was £12 for the trim and pointy tools Cheers mate ......!!!!

[@ScottElliott152]

+Gary L's Thanks Gary. I was quoted about the same in equivalent AUD. Glad I could help you save some serious cash. Regards, Scott

[@carl8797]

HI Scott, Have lived with faulty knob for over 1 year (refuse to pay Mercedes (Aus) for knob after incompetent servicing problems) Will attempt the repair this weekend after coming across your video. Thank you for this excellent instructional video.

[@ScottElliott152]

Thanks Carl. I feel your pain when it comes to servicing at the dealers. I do it all myself now as I'd had enough. I was quoted nearly $900 for that COMAND control knob plus more to have it fitted. You don't build wealth handing over that sort of money to car dealers. Let me know how it goes as I'd be interested to hear. Good luck, Scott

[@rgatsby6948]

Excellent video. Clear steps to repair the unit. I did not cut the wires when removing the unit for repair, instead peeled back the carpet on the console sidewalls and unhooked them from the retaining hook. I later used gorilla tape to secure it inside the console area as you suggested in separate video. The center screw on knob was a Torx #8 for mine ( W204 2011 or GLK 350). I used the reinforcement method with toothpicks cut to size and applied the epoxy to center shaft overlapping the break point to provide continuity and additional strength. Reinstalled and working!

[@ScottElliott152]

Thanks. I made a short appendix video showing how to unhook the cable. Check on eBay as you can now buy a replacement alloy shaft quite cheaply.

[@alexkurtz9220]

Scott . carried out your repair on my c180k here in England. your video is an international gem for all thrifty Merc owners. thank you. alex

[@ScottElliott152]

+Alex kurcewicz Thanks Alex ... in the distant past being thrifty and modest with what money you had was considered good taste and a virtue. This planned obsolescence policy is unethical and immoral considering we're supposed to be reducing our carbon footprint. MB are selling these COMAND controllers in Australia for nearly a $1000. They have no incentive to change the design. Perfectly good controllers with nothing but a broken internal shaft are probably ending up in landfill. I can't stand the hypocrisy. Regards, Scott

[@stuartscott60]

Thanks Scott, textbook guide on fixing the COMAND controller on my C250 Wagon. I bought an aftermarket aluminium shaft for A$23 on eBay rather than glue the sheared plastic shaft. The advice to cut the ribbon wire, pull through and resolder worked well. I staggered the cuts by about 2cm down the ribbon to provide a clear section to solder and heat shrink the individual wires and then a single sheath over the whole repair.

[@ScottElliott152]

Thanks Stuart. I've since replaced my repaired shaft with a 3D plastic printed item.

[@russellfortun3348]

Scott. This is brilliant. I managed to repair it in the car because i didn't want to cut the lead. I bought an aluminium shaft from ebay but I wouldn't have even attempted it without watching your fantastic video. Thankyou

[@ScottElliott152]

Thanks Russel I'm glad I could help out. Scott

[@christiancoates]

Well Scott, I just want to say a big thank you! I followed your video and saved myself a fortune…. I bought a steel shaft online for 7 euro and it works great… great resource… thanks again!

[@ScottElliott152]

Thanks Christian ... good work.

[@fredfoxuk6225]

This is superb, just used this to fix my 2010 C180 along with the aluminium shaft from the guys in Germany. Most satisfying to do this myself and not having to pay the ridiculous dealer prices. Thanks for taking the trouble to make this vid.

[@ScottElliott152]

Glad to hear I could help.

[@Evanxu628]

Thanks for much! This is the most helpful video I have ever seen. My local Mercedes charged me 800 bucks for replacement, they even charged me 200 just for checking this problem, which I have already known. Thank to your video and I fixed this perfectly tonight. I wish to see more videos from you about ins taking care of my C350.

[@ScottElliott152]

Thanks Wentao for your kind words. I'm happy to help out. King Regards, Scott

[@ChristianDonner]

I could not have done this job without your video - thank you. I am actually still in the middle of the process, waiting for the epoxy to harden. I just wanted to comment that some things were slightly different in my 2009 W204 (US version). Most notably, I tore the cable apart when I pulled the housing out of the center console. It did not take much force, and once the unit was removed, I found out why. The ribbon cable was wound around a plastic tab at the bottom of the opening and did not give.I had to unwind the broken piece (luckily I had not cut it off yet) and only then was I able to pull it out from the shifter side. Because the ribbon was severed close to the housing, I just removed the short piece from the connector on the circuit board and refitted the long piece to the connector. Now the cable is one whole piece and no soldering was needed.

[@ScottElliott152]

+Christian Donner ... Good on you Christian for having a go. Your experience may help others with the USA version when they read the comments. Good thinking shortening the cable a small amount so it's all in one piece. 3D printing a new shaft is the way to go now. There's a guy in Germany selling them for about $25 on eBay. www.ebay.com.au/itm/Welle-Stift-Stick-passt-fur-Mercedes-W204-W212-Comand-Controller-Drehknopf/231689507306?_trksid=p2045573.c100033.m2042&_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20131017132637%26meid%3Daea6bb27c04d4abf843f5de79112ce2e%26pid%3D100033%26rk%3D3%26rkt%3D4%26sd%3D151562840872

[@ChristianDonner]

I thought about that myself. Good to know someone did the legwork, if my epoxy job fails. So far it is working.

[@ScottElliott152]

3D printers are getting more affordable by the day. I'm considering getting one soon as it's the way of the future. Once I've got it I'll do a design for a new shaft and put the G code file in Dropbox for others to use with their 3D printers. I would prefer to help others take control so I wouldn't be printing new shafts and trying to sell them to make a buck. I can get a well regarded 3D printer for about $650 delivered which is tempting.

[@ScottElliott152]

I forgot to say my epoxy repaired shaft has been going famously for two years with no signs of trouble.

[@ChristianDonner]

+Scott Elliott and they should under normal circumstances. they don't break just from turning the knob - there is very little torsional force. I am pretty sure mine was broken by a mechanic who leaned on it. the shop denied it and I could not prove it. my tip for older w204s - make them sign off that the ignition switch and the command button work before dropping off the car for service.

[@PI4YOU]

Add yet another denied sale for crap parts to this post. Thank you Scott for taking the time to first repair your own Command Controller and then for taking the time to create the video and post it on KZbin. Far easier than it appears at first. But, it does require taking one's time and doing it right. Or, like me you may do it two times.

[@PI4YOU]

+Tom Conces 2010 C300 4-Matic

[@ScottElliott152]

+Tom Conces Thanks Tom. I did mine twice to get it right. It's part of the fun learning how these things work. Glad you saved the cash, Regards, Scott

[@kunstar1]

Brilliant instructions. I couldn't get the ribbon and I didn't want to cut it because my soldering skills are a bit rusty. So I unhooked the first part of the ribbon connector like you showed and then did the rest of the repair in the car with the the circuit board still attached to the ribbon. Hope this helps people in the same boat who don't want to have to go through the hassle of desoldering the ribbon. Now the scroll wheel works a charm.

[@ScottElliott152]

Yes others have done it that way successfully. I guess I like soldering! Regards, Scott

[@ScottElliott152]

That's good news Harry. Well done. It's poor form by Mercedes to have such a fragile part that's obviously going to be well used. It makes your wonder if it was planned to be like that as the cost to replace is quite outrageous!

[@sharon268]

my driver’s window power windows button broke and they wanted to replace the whole unit for $2500 my friend just moved the back button to the front cost of new power windows button $27 www.mbonlineparts.con

[@MichielvanderGragt]

Thank you for both videos Scott. Our Mercedes C220 from 2008 was bought here in Sweden and the problem was exactly as you showed us in the video. I appreciate your time and effort for making this video.

[@ScottElliott152]

Michiel ... I'm glad I could help . I have an Engineering friend in Stockhlom so very pleased to help my Swedish friends.

[@lilturle4lif3]

I just wanted to say THANK YOU so much, sir. Your videos had saved me so much money from problems i have with my c300. This problem just recently popped up on my car, and it has been bugging me alot. With this video of yours now i can confidently go on and fix it myself. Once again, Thank you Mr. Scott

[@ScottElliott152]

Tang I'm very pleased to be able to help you out. I don't like seeing people being charged excessively for problems that can often be easily fixed. Regards, Scott

[@lilturle4lif3]

Sir, im trying to fix my license plate light since there is now power to them at all. Ive done checking for broken connection but still no luck. Do you have any advices for me at this point? Thank you in advance.

[@ScottElliott152]

Tung other than checking the fuse, bulbs and connections I can't think of anything else.

[@lilturle4lif3]

I have searched around the forums and there isn't any fuse for the license plate light. Would you suggest i hook up the power from the rear side marker light to power the license plate light, sir?

[@ScottElliott152]

Tung that's a plan for sure. The side marker lights and plate lights are usually on the same circuit. Give it a try.

[@user43266]

At 1:49 exactly there’s a button labelled ‘c’. Can anyone please tell me what is the use of that button? I have been wondering for too long.

[@podilatispodilat6469]

I followed your instructions and you saved me over 300 euros!! The repair was fast and succesful!! Thank you very very much!! Best regards!

[@juancarlosrojasvegal]

Hi Scott. I've taken out the mouse. I'M stuck on a simple thing; I can't loose the bigger external wheel or ring of the button. You do it so easy with a screwdriver and it seems that mine is welded or glued.... Finally I managed to set it loose, and from there it was as easy as shown. Can't thank you enough. DIY rules!

[@lenmiester1549]

Absolutely brilliant - thanks scott! I didn’t repair the post (eBay aluminium replacement) or need to cut the cable - was already loose, but couldn’t have done it without these 2 guides. Legend!

[@ScottElliott152]

Thanks Lenmiester ... glad I was able to help. Since making the video replacement alloy and plastic shafts became available. I eventually had a friend print me a replacement shaft out of ABS plastic on his 3D printer.

[@kristianbrandstrom]

TNX Scott. very helpful video. It took me about 1 and half hour to do the whole job- I did not cut the wire , i dismantled the control knob in the car and rebuilt it there as well.The hardest bit was actually the knob wheel outer ring-1st part.I found it difficult to get off and also easy to damage the edge to it, otherwise no problem to do it . use a cloth to prevent parts from falling in to the openings. I used loctite super glue powerflex gel. worked like a charm.

[@ScottElliott152]

+Kristian Larsen That's good to hear and good information for others. Thanks for sharing. Regards, Scott

[@bboyd3rd]

I performed this fix today (March 14, 2015) and it worked like a charm. Thank you for saving me several hundred dollars! -Ben (Cordova TN, USA)

[@ScottElliott152]

Ben Boyd Good on you Ben. I'm pleased I could help. Kind regards, Scott

[@joelkautz3982]

Great video! Just repaired my 2009 C300 with $7 of epoxy. I did note the US version uses a 7 torx screw in the knob top (vs a 10), and I was able to disassemble the console enough to not have to cut the cable (just pulled the cord off a tab under the cup holders a little deeper in the console and disassembled the unit in a the car), otherwise the video was perfect! Thank you so much!

[@ScottElliott152]

+Joel Kautz That's great news Joel. Well done. Regards, Scott

[@VAQUITINA]

Following the indications of the video I did the repair today. No problems except that I had to cut the cable and solder after. Many Thanks for sharing you knowledge man!

[@hippoears]

Scott, greetings from Las Vegas. Your video is first rate, and very well done. I'm about to try this myself and I'll let you know the results. Thank you for taking the time to share with us all.

[@ScottElliott152]

Thanks Rata I appreciate your kind words. I was in Las Vegas in 2008 for the World Mining Expo at the Convention Center. I stayed at Caesars. I enjoyed my week there. I'd be interested to know how your repair goes. kind regards, Scott

[@lisatansley4139]

Thanks Elliott, managed to fix without taking the controller out the car so no wires cut. Great video!

[@wolky1907]

Your w204 videos are old but gold:) many many thanks.. i got lots of my issues solved by watching your videos..

[@ScottElliott152]

Glad to help. Thanks for the support. Yep some of them are seven years old now!

[@АндрейБодрей-м6н]

Not knowing the language did everything according to your instructions. And it worked. Thank you very much. With greetings from Russia!

[@selorm5836]

This was an amazing!!! video. Scott shows how to tackle the trickiest parts of this device. I went in and came out without a hitch. Many thanks.

[@clanrichards]

Brilliant tutorial!!! It happened to me, so I searched and found your video. I followed it precisely and it is now fixed. Very many thanks.

[@ScottElliott152]

Thanks Phil.

[@AppieGulec]

Thanks for the video ! last week my scrol button broke down too and I was able to fix it, only different thing I did was instead of glue I soldered / melted plastic together and reinforced extra bits so it wont break down easy. So many thx from a w212 driver !!!!

[@ScottElliott152]

+AppieGulec Well done and glad I could help

[@davidcrake9624]

Great video. I purchased a new aluminum stem and it works well. A few hints 1) the cable is a real pain. I did not want to cut it and ended up pulling it towards the control unit and taking the control unit in the car (which worked well - just be careful to not loose any parts 2) take a picture of the pieces in the stem/joystick, they need to be aligned in a certain way when you reassemble.

[@ScottElliott152]

Thanks David. I have made an appendix video with a link in this video. That shows how to lift the carpet to access the clip holding the cable in place.

[@spencersavage]

absolutely brilliant. Followed the steps exactly and it works a treat. Never thought a unit like this could be repaired. I think its actually stronger than before. Thank you so much for taking the time to post this.

[@ScottElliott152]

Goods news Spencer. I'm glad I could help.

[@marcusgarveyjr.4273]

Hi Scott, thanks for the very useful video. I've just finished assembling the unit and will try it first thing in the morning. I hope it works. The video was very informative. My only comment is regarding the cable. I followed your advice and cut it instead of trying to remove it only to find out that removing it was far, far easier than soldering the thin cables. I should have checked first. Other than that, no complaints and thanks once again. (Forgot to mention that my car is a 2010 GLK 350 4Matic so that might be why it was easier to remove the cable than to cut it). I've since installed it back and it works perfectly. Thanks a lot!

[@zulkbaz]

Mr. Scot. You are my hero. Thank you. I just fixed the scroll knob based on your video. Sincerely -from Malaysia

[@ScottElliott152]

zulkbaz I'm very pleased I could help you repair the problem. Kind regards, Scott

[@gmamanidis]

Hello Scott and thank you for a great video! I tried to do it in my w204 but I have a small problem. When I try to separate the two parts of the unit, they just won't come off (4:21 of your video). I guess I have to remove all 10 torx screws from the back, but I wanted to ask you first! Thanks again!

[@ScottElliott152]

Georgios thanks for your kind comments about the video. Yes you must remove all the torx screws to separate the two halves. Make sure you have a small container next to you to put all the bits and pieces in as it's easy to lose something! Kind regards, Scott

[@danamg9328]

Hi Scott, thanks for your video. I managed to repair the one on my car easily after watching. A couple of things I did differently though, I didn't like the thought of cutting the wires so I dismantled in the car, once you unplug the switch you can pull enough of the cable through to allow you to work on it, just have to be careful not to drop the screws or springs into the console. Also, I cut 4 grooves into the top piece with a grinder and 1mm disc so I could place small nail shafts across the join for 'steel reinforcement'. Once I buried the nails in epoxy, I can guarantee that shaft will outlast the car. Had to glue it in two stages for this, the initial glue joined it back together then the second to embed the nails. I'm amazed the shafts last as long as they do, there was barely any plastic linking the top and bottom pieces on mine.

[@ScottElliott152]

Thanks Dan. I'm glad you were able to fix the scrolling function and I was of some help. I also cringed when I cut the wires but after spending about 30 mins trying to free it from whatever it is that holds it under the console I'd had enough! I gritted my teeth closed my eyes and ... snip! Soldering back together was easy and I've had no issues at all in over a year. As I was doing the R&D to find out what to do to fix the problem I had to remove it so I could pull it apart on the bench. If I had to do it again now I can see the merit in dismantling in the car as I know exactly what to do. Kind regards, Scott

[@Pixisvin]

Greetings from Sweden! Thanks for a thorough tutorial! It really went into details in how to dismantle the unit, and properly repair it. On top of that, it saved me in about 7-800$ in repairs at the local Mercedes. Cheers!

[@ScottElliott152]

Thanks for the kind words. Scott

[@jeffjackson5657]

Awesome! Mine just broke and the dealer wanted $320 to replace it. Thanks for sharing!

[@ScottElliott152]

Jeff Jackson Well done Jeff. I'm pleased I could help out. Regards, Scott

[@am9972]

Excellent thank you so much!!! Followed this and disconnected and repaired my unit within 1 hour. I bought an aluminium shaft for £20. Disconnecting the wire was very easy too!

[@ScottElliott152]

Good news well done. My shaft broke again a couple of months ago. A friend made me a new one using his 3D printer. I notice eBayers with 3D printers are selling them for about the same price as the alloy versions. I'd be concerned with wear having metal on plastic. Plastic on plastic would be better. Perhaps run your alloy shaft for a while, dismantle and report back with your findings. Regards, Scott.

[@am9972]

Scott Elliott will do. Thanks mate

[@selwynprice2023]

Really helpful, worked like a charm. Instead of repairing & reinforcing the shaft I used a wooden dowel to replace it. Thanks for a great tutorial.

[@ScottElliott152]

+Selwyn Price Thanks for the compliment Selwyn. A wooden dowel is an interesting repair. 3D printing a new one from ABS or PP is the way to go now. if you search eBay there's a guy selling 3d printed replacements for about $30.

[@starboyrealdeal]

I followed all the instructions and everything worked out great. The only difference was I bought a second-hand control knob to install while I took my time to repair the original. The second-hand one cost me £110 so now I have one to sell.

[@ScottElliott152]

starboyrealdeal That's good news so well done on a successful repair. I did the same thing and purchased a used item but it was only $AUD50. I installed it while I worked on the original to come up with a way of repairing it. Then the used one broke so I put my original repaired item in and repaired the used item and have kept that at as a spare.

[@ScottElliott152]

Thanks LL. I'm glad i was able to help out and save you a heap of cash. What you've effectively done is earned $US529 tax free.

[@reggie1cfc]

Thanks for this video. I have just reassembled and installed and it is working perfectly.The only thing I done differently was, during assemble I fitted the rockers into their cradles before clipping the cradles back into place and found this an easier option.

[@eliematar]

Hi Scott, excellent video, I was able to remove the scrolling knob from the car without any difficulty. However, when I removed all four torx screws(2:47), I couldn't seperate the two halves. They move slightly but are still blocked. Any ideas?

[@ScottElliott152]

+Elie Matar Elie there are about 10 torx screws not four. You have to remove all of them

[@stevesteranka]

Just completed repair on my E550! Saved $500 U.S. Cheers mate!

[@ScottElliott152]

+Steve Steranka Good on you Steve. Happy to help out. Regards, Scott

[@FunBobby42]

Spot on! Steps were outlined perfectly. Even used the match sticks for extra strength. Thanks Scott!

[@ovidionieves855]

Thanx for this very detail how to video, I was able to purchase that piece which was made out aluminum from Germany for $49.00. & your video helped tremendously. thumbs up all the way!👍

[@ScottElliott152]

Glad I could help

[@TheStormloader]

how long did you wait for the piece to be shipped from germany?

[@ovidionieves855]

about a week & half give or take. works like charm.

[@TheStormloader]

yeah mine came about the same time. replaced it and works great! Thanks

[@SamuelCalypse]

Thank you so much for your clear instructions Scott, took me around an hour of DIY, now it works like a charm, and I've saved hundreds of dollar

[@ScottElliott152]

Thanks Samuel. Scott

[@kbm1479]

Thanks a million Scott. Excellent step by step video. Shaft obviously made to break. Followed your video and repaired mine this morning. you have sved me a fortune. thanks once again.

[@ScottElliott152]

Glad I was able to help

[@josedelgadillo5166]

Thanks for posting! I was able to follow step by step. I was able to remove the module without cutting the wires, just released the clips by removing the carpet on the side. I couldn't put the clips back on though, so just followed your advice on the previous video and used tape to get the wires on. Thanks again!

[@ScottElliott152]

Yes removing the carpet is the way to go. Something I learnt after making the video! Glad I could help save you some money.

[@gehtdichnscheidreckan5322]

Big thanks to you Scott and greetings from Germany! I followed all step's and it's works brilliantly on my c-klass w204 amazing

[@revengejr]

I just completed this fix on my 2011 E350 sedan. (just of out of warranty) Others suggested I contact MB for good will to cover it, but whats the point if they are just going to install another part that will fail again in 4 years. Now, it will never break ;-) The only part that was different than the C class was getting the module out was a real pain. I had to shave about 1mm of plastic off of the chassis to get it out. Other than that, worked like a charm. Dealer wanted $180USD for the part and almost $300USD for labor. This fix cost me about $5.99USD in Epoxy and about 2 hours of time, not including curing time of course. The only tip I'd like to add: When removing the module from the vehicle, I did not need to cut the wire. The wire harness is completely accessible, just in front of the module. On the bottom of the white wire harness, there is a little tab. Just push that toward the passenger side while applying pressure on it toward the front of the car and viola! popped right off.. Went back on in the same manner. I used a tiny L shaped awl tool to do this. Thank you SOOOO much for the how-to. Really was a money saver!

[@ScottElliott152]

Thanks for the tip I'll check that out and see if it's the same on the W204 C Class. I agree it's better to fix the thing properly. Also it's more hassle and takes longer stuffing around getting your car to and from the dealers. Glad my experience could save you some money. Regards, Scott

[@revengejr]

MrScott52 I also just posted on the other video with a bit more detail and more specifics on this for any other E-class folks out there. Thanks again!

[@ScottElliott152]

revengejr Good on you as that helps us all. I like trying to beat the system and hate being gouged by MB or any supplier for that matter.

[@mx5tech]

Followed this and made the repair successfully. Brilliant! Had to glue the shaft twice and first time around it broke again - I think I didn't leave the glue long enough to set!

[@ScottElliott152]

Happy I could help out

[@ScottElliott152]

Glad I could help out. We shouldn't have to put up with failures like this on such an expensive car. Well done on the repair.

[@Homebuilder777]

SCOTT; Thank You so much for such an excellent video!! With this video, I was able to make the repair. However, like you, I had to cut the ribbon pigtail. What I need as well as, I am sure, others is a instructional video showing us how to re-splice the tiny ribbon back together! Thanks again!!

[@hipowa5]

Awesome Mr Scott. My Mercedes is a manual and am not sure if you mentioned it or not but there is not any need to cut the cable in the manual as the whole cable is accessible and can be unplugged and taken straight out. Also I found that the torx screws on the bottom cover were a 9 and not a 10. Altogether a very helpful video. . Thank you very much for sharing it with us.

[@ScottElliott152]

Thanks for your comments Khalil.

[@drewjoshua6065]

Thank you very much for making this video. I really appreciate it. You have saved me from buying a new unit. How did you figure out how to fix this? You are a genius!

[@ScottElliott152]

Thanks for your kind words Drew. I carefully pulled it apart first to discover how it worked. Then came up with a repair method. I tested it first on my own broken control knob to make sure it would last.

[@robertshay2048]

Scott, great repair video. I cut small,slots in short part of shaft aligning with recess in longer part and pressed in wire from sewing pins (bent to an offset) before adding the epoxy. Seemed very strong after drying. Now the Sirius satellite module must be replaced. Any videos ore hints for that ? 2009 C300 Sport with 6 speed manual.

[@ScottElliott152]

Not familiar with the Sirius. Try www.benzworld.org

[@TheDanster76]

Thanks a lot, I've just followed your instructions and successfully repaired my faulty command wheel. Happy days from the UK :)

[@ScottElliott152]

Good job well done. I'm glad I could help out and save someone a small fortune. Regards, Scott

[@ScottElliott152]

Kenyatta ... there should be about 10 torx screws on the bottom to remove. If you can post a photo please do. Once all screw are removed the two halves separate very easily. Is you controller the same?

[@caseous69]

Thanks for the instructional video! Was a fun way to spend the afternoon, and it saved me a thousand dollars! 😂

[@ScottElliott152]

Glad I could help! Thanks.

[@robertlipowski33]

Great video. Ive just decided to melt plastic using hot solder tip. Now all works fine

[@skydog180]

Worked for me too, thanks bud.. Did it in place, still in the vehicle. Just saved me a couple of hundy!!

[@andreasione]

Dear Scott, thank you very much for this video. It is perfect!.. In a cople of hours I solved the problem and saved over 200€!!

[@ScottElliott152]

Andrea Sione That's good news. I'm very pleased I could help out. Regards, Scott

[@xbamx2420]

Thanks a lot for the repair manual! Note: Torx screw in the steeing wheel shuld be a Trox Nr. 8 not 10, i think.

[@jasonkelley5394]

Fairly straightforward. As others have said, you don't need to cut the wire - it's just fixed behind the carpet. Wheel rotation working fine but up and left nudge a bit temperamental. Will see if it sorts itself out or if I need to reassemble again to correct.

[@ScottElliott152]

Yes I made a short follow up video showing how to get that wire out. Glad you got it going again.

[@jasonkelley5394]

@@ScottElliott152 ah great. 👍

[@relinevanemdenvanemden1070]

Hi scott i want to thank u for everything my husband just fix the knop it was the wire that was broken but at a place where it was difficult to see noe everything is good thank u very much

[@ScottElliott152]

+farli van emden Glad it has now been fixed. I'm happy to help. Regards, Scott

[@fabiovaraschin9876]

Hallo Mr Scott, I've just repared my Comand Control Knob following your clear instruction. Thank you very much! Best Regards

[@ScottElliott152]

Thanks Fabio ... I'm very glad I could help out. Kind regards, Scott

[@Wrightgroup1]

Hello Scott. Thank you for this very helpful movie. i have a small problem my scrolling work only up,down,left and right but don't work scroll can i repair and what you think the problem thanks so much again

[@ScottElliott152]

Hossam thank you for your comment. You problem will be a broken central shaft. Follow the steps in the movie and you will be able to repair it. Good luck. kind regards, Scott

[@ReverendWilliamHenry]

I repaired my control knob shaft using this video. Excellent! Thank you.

[@ScottElliott152]

Greta news Rev.

[@matsolo111]

Awesome video great detail, saved me a fortune and made my wife very happy now that her dial works again. Thank you.

[@ScottElliott152]

Glad I could help. Scott

[@nitsleora625]

thank you so much for this very helpful video!!! I was actually thinking of bringing my C300 at the Dealer next week but because of this video, i was able to fix my car and able to save $500 CAD!! thanks so much !!! you're amazing !!

[@ScottElliott152]

Nitsleor A That's very good news ... I'm very glad I could help. Kind regards, Scott

[@EBokxx]

Thank you so much!! I was able to repair my scroll wheel in about 2 hours following your videos step by step.

[@ScottElliott152]

That's good news. I'm glad the video was a help. Thumbs up to us DIY'ers. Beat the system and save yourself a heap of money. Regards, Scott

[@calobrecity]

Thank you very much !!! with little knowledge I have been able to repair the command. One question, you know how you can activate the TV icon in the comand through the engineer menu? Greetings.

[@ScottElliott152]

calobrecity Glad I could help save you some money. I've looked and have no TV icon to a activate. I didn't know there was one. Maybe on later models.Scroll through all the different menus and see what you've got in your COMAND

[@erenarslan756]

Thankss scott for this helpfull video. Is there any chance of buying the screw that you put in the knob? I lost the screw and the knob keeps coming out 🙄

[@ScottElliott152]

Eren it's a small metric thread screw either M3 or M2 from memory. You can get them from most electronic shops as they use them for computers. Scott

[@ScottElliott152]

Thank you for your kind comment as I do appreciate it.

[@gfowlerrepairs]

scott... you are a absolute star. top video top write up. it packed up yesturday and followed your step by step guide took afew hours start to finish. thankyou

[@ScottElliott152]

Glad I could help

[@silverfern9640]

Many thanks Scott. I managed to repair it according to your video and it was very satisfying. Cheers

[@parambhagia3670]

Hi Scott, your video is amazing. I would love to try this out in my car but do you think that it's possible to do it without cutting the wires? I don't know jack about putting them back together again so I would be hugely comfortable if there was an alternative. Thanks!

[@ScottElliott152]

Thanks Param. Yes you can do it without cutting the cable. Here's a link to a short follow up video to show you how to unclip the cable from the console.kzbin.info/www/bejne/bJXFqGWoeKaGatk

[@parambhagia3670]

@@ScottElliott152 managed to remove it successfully! Opened the unit up and isolated the broken shaft from it. Gonna glue it back on with some super glue now and hopefully get it back together. Can't thank you enough for this. I truly cannot express the feeling of satisfaction I am going through by doing this myself and not ending up paying Mercedes 😂. Thank you so much for such a detailed video and helping folks like us. If you ever come to Mumbai let me know. Would love to take you for a spin

[@ScottElliott152]

@@parambhagia3670 Thanks for the offer Param. You'll find superglue doesn't bond well to that plastic. You're better off buying a new alloy or plastic shaft off eBay. There are plenty of sellers there.

[@ScottElliott152]

There are plenty of these for sale. www.ebay.com.au/itm/Knob-Comand-Shaft-Axis-Pin-For-Mercedes-W204-C-Class-W212-GLK-Interior-Practical/124185933291?hash=item1cea0ef5eb:g:R6wAAOSwdh5evBQq

[@johnno_oz5587]

Thanks for the excellent video. Used one of those new metal pins. Followed it to the letter and now scrolling!

[@ScottElliott152]

Well done Johnno!

[@daitati]

Good video! Question: Can you tell if it's the shaft that's broken or the circuit board that's failed without removing the control knob? On my car both the knob and the two push buttons on either side of the knob don't work.

[@ScottElliott152]

+daitati Sounds more like the PCB if nothing is working.

[@paolofranceschi2967]

Very nice! This is how to repair.. But I don't know how to take off the scrolling command from the car? Help! Tks

[@ScottElliott152]

+Paolo Franceschi Paolo thanks for the comment. There's a another video I made on how to remove the COMAND knob. I think there's a link in this video. Have a look at the list of videos and you'll find it. Regards, Scott

[@paolofranceschi2967]

Scott Elliott Yees Thank You.. I didn't see it.. GREAT !

[@marinosmichael2121]

I just did it on a 2011 E CLASS COUPE with success. I had some issue gluing the pieces together since the glue i have chosen did not keep the pieces together as strong as you did (i also did the matches trick) in the second try i reglued it back as before but additionally i have added a very thin layer of plumbing tape (strong and thin) Everything put back together and seems to be working fine. I didnt wait overnight for the glue (only around 4 hours). i am not touching the car again until tomorrow.

[@marinosmichael2121]

Forgot to say thx for your videos! they are awesome! By the way a friend has a C CLASS 2011 version (facelift model not like yours, the one which has the led back lights and led front stripes). Is this problem applicable for those versions as well?

[@ScottElliott152]

marinos michael Thanks Marinos. I'm pleased to help people save some cash. I hate seeing people pay huge sums of money for things that can be easily fixed. It's good for the environment, our carbon footprint and the planet to extend the life of an item. There's nothing like a retired Engineer on a crusade! The choice of glue is important as those Poly Propylene plastics are very difficult to bond. The plumbers tape is a good idea. With the facelift model I'd speculate the same problem will arise after four years unless they've made a design change. With the dealers and their supplier doing a roaring trade selling replacement control knobs for huge prices they have no incentive to modify the component to make it last. Your friends 2011 C Class is getting to the time when it will fail. If it does help him pull it out, dismantle and repair and give us the feedback. It would be interesting to see if the shaft is exactly the same. I'm looking at 3D printers at present as it won't be long before we can print off a new shaft to repair these things. Kind regards, Scott

[@ppopescu3369]

Do you have any video showing how to remove the centre console completely ?I need to get to the rear blower regulator.thank you

[@ScottElliott152]

No I don't. Join benzworld.org or mbworld.org. I think there are other videos on YT that will help you. I'll make one if I ever need to remove the console. Scott

[@jf2613]

Scott, just wanted to say thank you for making this excellent series of videos on the w204. I have recently bought a 350 estate and have repaired/serviced several things with the help of your experience through your clear and detailed instructions. I’ve done the rear o/s tail lamp fix (inc the n/s as you did to be thorough), the command wheel fix, the power steering fluid flush and the engine oil change. I am going to do a coolant flush/refill and was wondering if you have thought about doing a video on that. I have done this on other cars before but was wondering if there is a specific fill/bleed procedure for this engine. Any pointers gratefully received.

[@ScottElliott152]

Thanks JF. I'm glad the videos were helpful. I actually did my coolant about 6 months ago but didn't record it. It's straight forward on the V6 diesel as there's no drain plug on the engine block like other Mercedes engines. There's just one drain valve on the bottom of the radiator. Do the coolant change when the engine is cold. Remove the plastic cover under the radiator to access the valve. Once the coolant's drained close the valve and fill with coolant via the overflow reservoir. Start the motor and the level will drop as the motor warms. Top it up and take it for a short drive to get up to temperature. Carefully remove the reservoir cap and top up if needed. There's no fancy bleeding procedure required.

[@jf2613]

Many thanks Scott, much appreciated.

[@Beevreeter]

Excellent post, thanks! An afternoon's work saved me a packet! Didn't even have to cut the cable - did the whole job in situ. Really bad design on MB's part, though, making that cable so difficult to get to. Why couldn't they just have the whole module easily removable?

[@ScottElliott152]

Hi Ken ... that's good news that you made a successful repair. Yes I couldn't understand why the cable was routed the way it was. Speaking of bad design, If you have a W204 make sure you check the RHS rear tail light connector for burning and melting of the earth wire. I made a video of how to fix it. Regards, Scott

[@Beevreeter]

Thanks for your response, MrScott52 - Yes, I already went through the rear taillight issue! Luckily it was repaired under warranty, when the car was still covered. Excellent work, you are providing a valuable contribution here.

[@ScottElliott152]

***** That's good they fixed it. There's a recall notice out in the USA and Canada. My understanding is they're not actually changing anything but just replacing the damaged parts with new versions of the exact parts. So I think it prudent to keep an eye on it. For what it's worth and the fact the repair is quick and simple I'd add the extra earth wire on each side for peace of mind. None of us want to do a "Ford Pinto"!

[@hebsan1]

Thanks for the video. I was able to repair mine following your steps. Amazing how cheaply Mercedes made this.

[@richardlovell979]

You are a genius, if you are ever in London I will buy you a beer.

[@ScottElliott152]

Richard Lovell Thanks for your compliment ... I'm very humbled.I must say the first time I had a pint in an English pub I thought it was magnificent! It was like mothers milk.

[@sinaay]

Hello Scott! I watched both the videos about the knob and have two questions before I try it myself: 1. My scroller still 'rocks' while spinning. This is normal right? Or should it just scroll free if the shaft is broken? 2. I have the facelift of the w212, is there any difference to the dismantling of the knob?

[@ScottElliott152]

1. That's normal. 2. The controller is the same.