Changing the Batteries on your Mercedes Smart Key

This video is different than the plethora of other videos explaining how to change your Mercedes Smart Key batteries ... because it makes the distinction in the differences between the type of key. Older keys come apart very different than newer keys .... good to know.

[@mysheitzbrown]

THANKS!!!!!!!!!!!!!!! I scratched the hell out of my fob just like you trying to follow other videos. This is the only video that mentioned the correct method for getting access to the batteries. Thank you for saving my sanity.

[@richardherndon1541]

Thank you! That really helped. No one else bothered to explain that it's different on 2008s.

[@neilfitzpatrick246]

Paul Oakes, you rock! Thanks for the clear instructions. You are now my friend. 😅

[@TranscendentaLobo27]

Thanks for taking the time to make this helpful video

[@BusMaster99]

Why would someone dislike this? This is one of the most informative videos regarding battery changing.

[@PaulOakesPRO]

BusMaster99, Thank you for the kind words! If for no other reason, I posted this for my own recall of how each one works when I need to change the batteries. So, if it benefits others, great. Most of the dislikes are because I didn’t address the trick of releasing the latch. But there are so many other videos that address that .... and, I don’t have a tiny camera that could effectively show the latch release.

[@WilloW0024]

Thanks for the great video Paul.

[@56lighthouse]

Sir. You have embarrassed so-called experts on KZbin. Following your instructions, I opened my 2009 S550 FOB within seconds while viewing your post. Thank you very much.

[@rogerhuband3643]

Thank you Paul your guide was very clear we never would have done it alone

[@PaulOakesPRO]

Glad it helped. Such simple things can be so frustrating ...

[@bullsiphoto6850]

On the verge of breaking off the black plastic key panel ... your video came on and showed the light...miraculous!

[@PaulOakesPRO]

bullsiphoto - LOL, I know the feeling of frustration...

[@nickandreychuk1334]

Great video Paul. Helped me out!

[@daniellucatero-jimenez.1440]

My positive was on the other side. Don't know how that happened so thank you for showing me how to take the battery out!

[@MJ-gu6er]

Very very helpful!!! I have two separate keys and I was trying to release the latch on both and was becoming very fraustrated!! Many Thanks!

[@shawnmunir437]

Thank you, under a minute I replaced the battery, otherwise I would be trying to take cover off too.

[@Zubairo]

After viewing 12 videos yours was helpful! Thank you

[@nancystaalberg4257]

Thank you -- followed your instructions and was done within a couple of minutes. I was trying to slide it out for my 2008.

[@PaulOakesPRO]

Nancy Staalberg - Great, so glad it helped!

[@hubhaanen1458]

Thank's Paul for your tip , yesterdayevening i was very FRUSTREDED , Now I'm OK , Great Tip Have a GREAT Day !!!

[@PaulOakesPRO]

Hub Haanen - Thank you, glad it helped. I did it after years of the same frustration. Just last week I went back and watched these to remind me how to do it.

[@antoniorubio782]

Thank Mr. your vid was the most useful

[@PaulOakesPRO]

Glad it helped! You are very welcome.

[@James-bv4nu]

This vid points out there is a difference between older MBZ and newer MBZ key fobs. From 2010 and newer, the fob back cover pops off; and 2007 to 2009, the fob end slides out. For each of them, there is a latch that prevents the key fob from coming apart during normal use (two different types of latch). For the newer fob, the latch is up and down, and prevents the back cover to pop up. For the older fob, the latch is towards the side (opposite side where the key ring hole), and prevents the fob end to slide out. You remove the mechanical key, shine a flash light into the slit, and you can see the latch. Use a small flat head screw driver to push on the latch. For the newer fob, you push the latch and work to pop up the back cover. For the older fob, you push the latch and work to slide out the end. (For the older key fob, there is a thin small ring that pops up, and you can attach your key ring to it, to give you the leverage to pull the fob end out, which pushing on the latch).

[@ryanhumor]

THIS comment completed the video thank you!!

[@morgantepper1134]

thank you for this!!

[@PaulOakesPRO]

Great addition, James!

[@karjo49]

I still could not do it until I watched anoter video: kzbin.info/www/bejne/imLVqaOgmMp4fbM

[@Dan57440]

Big help. Thank you. I have a 2008 and have broken one key trying to prise the back off. Now I know it slides out it's really easy.

[@PaulOakesPRO]

So glad ... I hated it when I put a big scratch in my key trying to remove it the wrong way.

[@timothymcauliffe2520]

Thanks Paul you saved me a bunch of time!

[@PaulOakesPRO]

Glad to help!!! So glad you found it useful.

[@kingush06]

This was so helpful I was fighting with my key for 30 mins per another video I saw for a newer model you just helped me lock my 2008

[@PaulOakesPRO]

Trust me, I can relate. I still use my videos as reference when I have to change the batteries.

[@TheCaringCorner]

Great video! Solved my headache. Thanks!

[@kentabrahamsson]

You saved my day and my 2009 MB key probably as well. Thank you.

[@PaulOakesPRO]

GREAT!!! That was my intention, Kent.

[@rogeliomendoza2507]

Thank you thank you. You saved my life 🙌🏻 Mine is a 2018 GLA250

[@PaulOakesPRO]

So glad it helped!!

[@bigmarc9167]

This was point on. I have a 2010 S class and the top pulled off instead of the back. Found (2) 2025 batteries

[@heather9165]

Thank you! I have a 2003 and I was trying to pry the back off. Thanks for the video!

[@PaulOakesPRO]

Glad I could help.

[@rayparayno8587]

Thank you so much. I had the same problems. I bought a replacement Fob and got the other one and I came close to breaking it.

[@PaulOakesPRO]

Glad I could help!!

[@95bochamp]

If the Normandy coastal defenses were built as securely as these latch mechanisms, we'd all be speaking German right now! This is ridiculous. In any case, thanks for pointing out that similar keys have different latches.

[@thriftvestor1146]

Thanks Paul. I had trouble with the latch.

[@sonlyme4445]

Thanks for taking the time to help people who encountered the same issues as you. You helped me brother. Kudos.

[@PaulOakesPRO]

Glad to help! Little things make a big difference!!

[@igotjohnblaze]

YOU THE MAN PAUL !! thanks IM 2008 MAN

[@roberta.6295]

Thanks Paul an essential video that helped me.

[@hansbeenhackker3977]

Finally ! Great explanation.. Thanks !

[@PaulOakesPRO]

You're welcome! So glad it helped.

[@friendlymotorsltd5797]

Appreciate your information Paul. Really helpful. Please continue sharing your knowledge and experience so maximum people could get benefit like me. Thank you again!

[@PaulOakesPRO]

Thanks, will do!

[@bellagiampietro7715]

thank you so much Paul!!! so very helpful 😁

[@hudgonsphotography]

This was a lifesaver, thank you!

[@PaulOakesPRO]

I am delighted to read that it helped! Best regards.

[@kezza52]

Very useful, Paul. I needed to pry the slidey-outy bit loose on my 2007 Smart Key with a handy letter opener as I pressed back the inside latch. It wasn't easy but it was do-able.

[@PaulOakesPRO]

You'd think they would make it standard, wouldn't you!?

[@seana1022]

Thanks buddy, it helped me because i almost spoilt my key by watching the other video's since i have a 2008 w 221

[@PaulOakesPRO]

You're welcome! I screwed up one of mine, which was the final straw before I recorded the first video.

[@MbaekweCabana]

Thank you for sharing this video.

[@leonardochristo8346]

The 2016 MBenz key it´s so easy, but the 2008 MBenz Key it´s very very difficult !!!! I have both !!!!

[@leonardobautista8049]

thank you for your video Sir

[@PaulOakesPRO]

You are most welcome. Thank you for your appreciation. You would be surprised how many nasty comments I get. So, yours is most appreciated.

[@jeta1f35]

Many thanks ... I have a 2007 W203, run out model, it has the slide out battery like your 2008

[@sergey3331000]

Thank you for the expiation! Why they have to change it? Everything I touch in my Mercedes is over engendered. They think they are very smart 🧐

[@_Yadiggg]

Thank you Paul!

[@simeonmoye1798]

If you can’t tell the difference the release is on the back of the key fob that has to be pulled & the other metal key release is on the bottom

[@chibage]

Thank you Sir, I already had the notification of low battery come up in my Merc

[@RobertLugg]

On my 2006, ML, it is different still. The latch that you need to release is on the side of the FOB. So to open you have to slide not push. The key usage is different too. Don’t use the shaft of the key but instead use the shorter piece like a crowbar.

[@PaulOakesPRO]

Thanks for the tip, Robert!!

[@loutonacca9503]

Thank you, Paul My S550 its just like the first one.

[@cardplayer76]

Okay. Figured it out. Hook the handle end of the key alway to the right in the slot and pull it to the left. This unlocks from the side but you have to hold it as you pulled the guts out of the key fob

[@hazmechanic7996]

Thanks man, we appreciate the information by the way we have a 2003 S500 in the shop and the key is the same as the 2008 in your video

[@PaulOakesPRO]

Good to know. Maybe Mercedes should produce a helpful video or reference guide that cleared this up by model and year....

[@billh4227]

I am trying to figure out what makes the keys different those are the 2 styles I think keyless go is the difference I have a 04 E55 and a 09 GL450 that have keyless go and the round panic button and those have the the style that the insert slides out. My 07 E350 and my 12 C300 have the triangle panic button, the battery cover and they are not equipped with keyless go. This is a good video because it shows both.

[@PaulOakesPRO]

Bill H, thanks for the post. Both of mine are Keyless Go. I have yet to figure out the logic behind Mercedes Benz’s design choices.

[@angel727272]

Thank u best video for benz key 💯

[@gkasante9809]

you are a king among men! a thousand thanks.

[@PaulOakesPRO]

Wow! Thank you!!!

[@peterboxhoorn971]

Thank you for sharing. I was just a frustrated like you sir. Your video showing the right way for my S class model. Thank you!

[@PaulOakesPRO]

Glad it helped

[@chakghale5615]

Thank you Paul, for the demonstration.

[@cardplayer76]

Didn't help on the 2008 . Still struggling to find the release latch to let the back of the key fob come out. a close-up of the release latch would have helped

[@PaulOakesPRO]

I wish I had a camera that would allow me to…

[@maryruark8880]

Thank you so much!!!! Today is a holiday and can't get anyone on phone!. You saved me worrying on a trip tomorrow. I have a 2016 glc and it worked great.

[@cindywang8772]

Wow you’re a Genius 🌹🌹🌹

[@TomBleecker]

How to release that latch is the main headache. If you do another video, please show how you did this.

[@PaulOakesPRO]

Tom, I recently posted a second video that provided some insights into releasing the latch. I had hoped I solved the puzzle at least for more current Mercedes Benz models, but Robert Lugg says the tip I shared in the second video didn't work for his 2016 ML. Good luck.

[@tbip2001]

Do the keys need recoding after a battery change? I'm guessing not. I have a 2010 w164 ml Them you so much

[@PaulOakesPRO]

No, they will not.

[@barjunkies1]

Do you have a video to show how to fix the remote control if you put a brand new battery in there and a doors are still not unlocking

[@PaulOakesPRO]

No, I am sorry. I have never experienced that particular problem.

[@dashtyATG]

Thank you I've just killed 1

[@notvlicense]

THANK you Sir!! Watching other videos I actually broke the black cover try to get it off... On my spare key I slide it like you showed... So easy when you know how. Thank you.

[@milancuic7056]

The only video that is useful for 2007 cl600 model. We kept trying to open instead of slide watching wrong videos and were going crazy. Many thanks!

[@espritriche3595]

Thank you for your helpful video ☆☆☆☆☆

[@PaulOakesPRO]

You are welcome. Thanks for letting me know you found it helpful.

[@leonardochristo8346]

Thank you very much !!! I have both too, and I was suffering !!!!

[@penterprise2481]

yes. I have the oddball fob. hank you

[@bexaminer1]

That's pretty strange. I have a 2011 SL550 and my key is like the 2008 that you show. So I'm trying to find a way to get the part to pull out as you showed. I'm reluctant to force it. I'll see if another video deals more closely with the 2008 key fob.

[@rodchamp7510]

I'm still very frustrated - how do you release latch ?????? Please tell us

[@espritriche3595]

kzbin.info/www/bejne/hH66iYegobuJnac

[@PaulOakesPRO]

There are dozens of videos on KZbin showing how to release the latch. I didn’t think I needed to add another, but maybe I do.

[@wakil711]

I almost literally cursed out the locksmith. I have two different keys as well I was getting ready to get the big screwdriver…….lol

[@1965xlch]

This video really helped me!!!! THANK YOU!!!!!!

[@unknownsockpuppet3133]

OK, but you did not show the rest of the procedure on the 2008 key. I'm STILL frustrated

[@PaulOakesPRO]

I am stumped on how to pop the cover open on the 2008, but the "rest of the procedure on the 2008 key" is on this video.

[@unknownsockpuppet4333]

@@PaulOakesPRO Thanks! It's a done deal, and it was quite simple to do

[@kimhart7234]

Thanks! Made it super easy!!

[@paulleivers9750]

Thank you for this. Most of the other youtube videos do not mention the 2008 key sliding mechanism. Excellent.

[@PaulOakesPRO]

EXACTLY!!! That was why I made this video.

[@laley6031]

You good I just learn how to do it my self I just got a cls2008

[@PaulOakesPRO]

Glad it helped.

[@carlswansoniii5030]

Thanks for the help. Mayor! USMC, 1986-90.

[@PaulOakesPRO]

You bet! I am glad to help. I know it is old and overused, but I really DO appreciate your service. No one who hasn't served can appreciate the sacrifices you have made.

[@rt9372]

Makes sense in theory but would be nice to see you physically do it.

[@PaulOakesPRO]

It is almost impossible to position a camera, at least a camera I own, to show me physically doing it.

[@Hassanaboulhosn]

Mr. Oaks, your suggestion is well appreciated ! Good job, Paul ! 😊

[@RealestateByMoe]

Thank you!!! Life saver 😁

[@skorpsaiyan2361]

That was so helpful. I have a 2005, 2007 and 2014 Mercedes and all 3 keys are different! Almost broke my 2007 one thinking it came apart like 2014. Thank you!!!

[@PaulOakesPRO]

Skorp Saiyan - LOL, do you ever wonder if those Mercedes engineers sit around and talk about “How can we make this just a little bit different than the past few years’ models ... just to frustrate the crap out of our loyal customers.”?

[@Peter-ue4iz]

same here

[@alextllam]

Thanks Paul. I got the 2008 key. I try to release the catch as you mentioned, still could not figure out how :(

[@alextllam]

Found the way to release the catch from kzbin.info/www/bejne/aZuslWWQeMStjrs&ab_channel=PaulOakes. All good now.

[@PaulOakesPRO]

So sorry. Was the problem with the original release or sliding the cover off? I didn’t focus on the initial release because there were so many other videos covering that, and because I didn’t have a camera that would show it.

[@alextllam]

@@PaulOakesPRO Thanks. It is getting less video to open the 2008 key. Just found I attached the wrong link. The correct one I used was kzbin.info/www/bejne/imLVqaOgmMp4fbM&ab_channel=MercedesMedic . Thanks

[@steveawbrey2045]

Without reading through 293 comments, do we know what battery it takes?

[@PaulOakesPRO]

Steve, it is hard to say definitively because they are different depending on the year. My 2008 SL 550 uses 2 CR2025 batteries. I would recommend you look at the spec on the old battery, check your owners' manual or google it. Here is the response I got on google when I searched for my 2008 SL 550: www.mbsd.com/how-to-change-mercedes-key-fob-battery/#:~:text=The%20Smart%20Key%20uses%20two,grocery%20stores%20and%20hardware%20stores.

[@steveawbrey2045]

Thank you Paul

[@RvdKlein]

Fantastic, thanks!

[@PaulOakesPRO]

You're welcome!

[@brandnamez2u]

Thanks, this video helped me to open up my Mercedes key fob for 2005 Kompressor 2 door coupe battery used was #2025. Cheers👍 3:24

[@ashleythom1052]

Tells e nothing useful. I need to know how to change the battery, not the difference between 2008 and 2012 models. Just wasted 3 minutes of my life

[@glenleonard7610]

My 2007 SLK comes apart like the 2011

[@PaulOakesPRO]

Good to know. I just bought a new (to me) 2017 GLS 550 so I intend to do another video once I figure out it's keys!

[@m.3962]

Your video just saved me after two hours of being frustrated beyond belief. Every video before this said my key was the pop off one, and I couldn’t not figure it out. Damn near broke my key. Thank you so much for taking the time to show the difference. I appreciate it so much.

[@PaulOakesPRO]

So glad you found it helpful. If nothing else, it was a reference video that I frequently return to every time I need to change the batteries.

[@afra5ya6]

@@PaulOakesPRO I guessed i should've thought of that. I already changed the battery twice but each time whenever batteries expire i had forgotten how did i open it earlier. So, I always search for an article/ a video to do it. Now I will add this to my favourite for future reference :D. thanks again.

[@cooper1756]

Paul, you are my god! thx for this video!

[@PaulOakesPRO]

Glad to help!

[@LOS-ry1ly]

The older model has the round red panic button witch takes 2 batteries so u pull it out from the latch...And the triangle red button takes 1 battery witch needs the black cover pulled back

[@happytravel888]

Thank you, you totally helped me!!

[@PaulOakesPRO]

Glad I could help!

[@John-ip4hs]

Hi Paul, your video very helpful, I have the old style required the key to slide the hatch with the mechanical key.

[@vinodude1]

THANK YOU SO MUCH FOR THIS VIDEO. I have a 2008 ML 350 and was just about to the point where I was going to use a sledge hammer to get that thing open. Watched your vid, and it was a breeze.

[@richardjones9375]

vinodude1 how was it a breeze if he didn’t even show us how to get the batteries out?

[@Moneywithdaniel]

Thank you Paul 💯

[@sunnylam2000]

Ya it will be helpful if you can spend 3 more seconds to explain how to pop the back of the 2008 key. Anyway I figured it out finally. Many other videos are for the newer key with the back cover. Thanks for video tho. Cheers.

[@mirzaakwal9676]

Sunny Lam HOW

[@airstreamingypsy]

OMG, yours is the third video I watched, seems third time's the charm. Odd that the old way is so much easier than the new way, maybe Mercedes made it so people would pay dealers to change it. Thank you for the simple instructions.

[@PaulOakesPRO]

Glad it was helpful! And, exactly my thought about why Mercedes keeps changing the design. I bought a 2017 GLS a little over a year ago, I still haven't tried to change those batteries yet ... I am wondering if I will discover a third design ...

[@samsidhu66]

good video. thanks for your share paul

[@bebianodasilva3523]

Thank you Paul! You have eliminated a source of frustration for me!

[@PaulOakesPRO]

Bebiano Da Silva - So glad it helped! Have a great day.

[@ntotiladiakongo]

I almost break the back cover trying to change my battery.. thank e

[@beckbenz9707]

Nice thanks

[@jawaunwashington]

Life saver lol