Mercedes-Benz W205 C300 Battery Replacement DIY (2012-2018 C250 & C350)

[@chrismartin451]

Simply put, this is the most concise, informative and well thought out repair/replacement video I’ve ever watched on KZbin. Your editing deserves high praise sir.

[@fcpeuro]

Really appreciate the kind words and praise Chris! Glad it helped you out!

[@michaeldelsignore6980]

Yes, agreed. He is very good.

[@gursharansingh1186]

I never repaired anything in my C300 2017 4matic but after following the same steps showed in video helped me succeed replace my car battery and battery fitting is perfect. Thanks 🙏🏻

[@CGsocialLAB]

Just replaced the battery on my car using this video. Thank you for the clear and concise walkthrough. 10/10

[@slavazayarny6310]

FCP Euro, thanks for putting out valuable content like this. Please comment on: 1) The need and the tool to update the front SAM with that fact that battery was changed. Factory service manual seems to require it. 2) Your suggested approach to preserve memory settings such as radio stations, clock, etc.

[@VonnTrapp]

It’s crazy because I went to an auto shop and they told me they have to keep some type of electricity flowing threw my Mercedes to change the battery and without it, my car would have to be reprogrammed coasting thousands of dollars and they didn’t have that tool they claimed. That just mean they didn’t know what they were doing. 🤦🏾‍♂️ Thank you for this video

[@greencleandiveservice5558]

Great video! One thing I did pick up on was in the beginning you mentioned the replacement was a group 49R. At the end of the video you referred to it as a group 94R. I looked at the battery leaving the box and its visible that it is a group 94R

[@kiasayar]

Wow an amazing DIY tutorial and I was able to change the battery on my W205 without any issues. THANK YOU!

[@fcpeuro]

Nice!!!!

[@stephenshort1363]

Thank you very much. The place I purchased the battery would not swap it out because of how complicated it is. I followed your video and had no issues at all.

[@stevenhuynhstlouis6879]

Thanks for the video Did it myself today july 19th 2021 Saved me 200$

[@hanyangliu8360]

Very useful and concise instructions! Just replaced the battery for my W205 and no issue at all, saving $150 labor at shops

[@benjaminmwendwa6292]

Thanks for the share. I went to Advanced Auto Parts today and bought a battery for my 2017 C 300. They however would not install it for reasons explained earlier in your video. I replaced it after watching this video and didn't have to reset anything. Very well-made video. Good job and thanks!

[@iforgotmyscreenname1]

The reason why a lot of stores don't want to mess with Mercedes, Maserati, Porsche and all high-end vehicle is because... if something goes wrong (computer reset or check engine light pop up), it cost a lot more to fix it than just selling you the battery. Recommendation for those who own high-end vehicles, 1) Make sure you're a mechanic or know the basic mechanical skills. 2) Take it to the dealership.

[@brno49parallelnorth]

I just followed the instructions and it worked for my C300 2020. Thank you!

[@chunli6261]

I need a battery replacement on my 2015 Mercedes Benz c300. Will my computer need to be reset afterwards?

[@polokomogatusi3787]

Great video! I had errors on my W204 C250 cluster and as you have mentioned some functions were not operational. Replaced with AGM 668 battery but errors still appears. What could have gone wrong or is it a start/stop battery in the trunk?

[@ponakka]

In the mercedes fatory manual they instruct to measure positive terminal that it has the voltage after disconnecting. And it should take some time to voltage to go down. Manual said that if voltage drops instantly there might be some fault on the system. So this also means, that after disconnecting the battery, you need to be extra careful not to short the positive terminal to anywhere ground. There wasn't really downsides with letting the system drain after taking battery out.

[@curiousottman]

Odyssey makes a fantastic battery. I have one in my Benz and it has lasted 10 years so far. Make sure it is always completely charged. Keep it on a trickle charger (noco genius is good) if you store your car over the winter.

[@Ran-tj2wy]

Very well said. Are there any other settings besides the radio etc. to reset for the new battery to function properly?

[@carlossevillanor]

Is it necessary to update the software so that the alternator charges differently?

[@noahserrault]

Almost certainly. It’s a Mercedes’

[@fooBar55]

On 2019 C300 - do NOT fully remove the battery clamp at the front bottom of the battery that holds the battery down - Just loosen it sufficiently to lift the battery out. I fully remove the clamp (as seen in other videos) and it turnout the nut that the clamp bolt goes into is not part of the bottom tray, It is loose metal piece with a nut in it. That piece moves around and even if you carefully center it on the tray hole the bolt is not long enough, There is very little room to even get to the metal-piece with the nut in the right position. Finally I screwed the battery clamp's bolt into in the metal piece holding the metal piece with nut with my fingers. Then with the clamp loose I put the battery in - there was some room to slide the battery into the tray with the loose clamp at bottom and then I tightened the bolt in. The fact that the nut for the clam bolt is not part of the bottom tray or that the metal piece with nut is not properly attached to the plastic tray or the metal thing below it is such a stupid design, Most folks would remove the battery clam completely.. Generally Mercedes engineering is very very good but not in this case - a stupid design that probably the Mercedes engineers have been instructed to not remove the clam completely. Previous C300's did nit have a such a stupid design (based on videos I have seen on you tube).

[@fcpeuro]

Thank you for the first hand notes!

[@marioarvizu7077]

Great video, thanks! Question: Does this procedure leave any kind of dashboard message? I oen a C180. Thanks, again!

[@morningcoffeepottery5416]

Thank you Kyle!

[@rickd5220]

Thank you so much for your video. As stated below, it was very specific and well made. It helped me change my battery and you couldn't have made it easier. Thanks again. I will be subscribing to your channel.

[@johnfindra5049]

Very professional. Well done for both the content and the video. This fellow is very easy to watch and listen to.

[@kiddt1999]

Excellent video! Does anyone know if the 2018 c300 has an auxiliary battery and where it is located??

[@dyCrow]

Yes the 2018 C300 Has an Aux battery located below the glove box and behind the carpet. There is a KZbin video on how to replace it. kzbin.info/www/bejne/p5qvfaSgpt6Bpa8

[@ajnath4]

This is an awesome video!!! Thank You! for making it. I just replaced the battery, in like 15 minutes because of this video.

[@Danny-dh2pg]

Is the bit required or can I use a socket ?

[@angelamartinez5691]

I want to thank you for taking the time to make this video. I was able to order the Odyssey battery and auxiliary battery from FCP. Replacement was easy with your video. Just curious if there is some kind of reset on battery? Shortly after replacement the yellow battery warning comes off and on randomly.

[@MrRemusg]

I have a 2015 c400 .. can you explain how to remove battery cover as I unblock the 6 tabs but the cover does not come off nearer the windscreen

[@RenatoCheloni]

Estou com o mesmo problema. Conseguiu tirar?

[@cupompa]

I thought all these new Benz models needed a battery registration to the front SAM (N10/6) like BMW now? Great video!

[@cupompa]

@@cataha Yeah that's the thread I read too!

[@noahserrault]

I’m almost curtain these require a BMS reset to reset the voltage going too the battery. Also mentioning that you put in a 48AGM and put in a 94rAGM.

[@wiicodman]

More W205 videos please 🙂

[@fcpeuro]

ton more incoming!

[@albinchristensen6141]

Great vid! Lot of speculation on the need to register the new battery. Can you please confirm if it’s necessary or not? I’m planning on buying and changing on my C63s. Thanks in advance

[@JeeperZJ]

2016+ mercedes benz require resetting the hour counter for the starter battery in the front sam.

[@austincymbalski]

Do you have to go in with a scan tool to tell the car it's been replaced, so it doesn't try to charge it to failure?

[@carlo8899]

I have a 2018 Mercedes’ Benz 300e and I was told you need a special tool to reprogram the battery to the car. That is what a Mercedes mechanic told me , is that true? Thanks

[@luiccivq]

hi; I have a 2013 C300 4Matic, your video looks like this replacement is so easy, but how about losing data settings like radio, windows etc. how to reset those in an event or I should not worry about any of that for my model MB? please advice. thanks

[@SimonChen744]

After replaced the old battery with a new one does the system need to be reprogrammed for a battery calibration?

[@GeneralButcher1]

I dropped my T45 under the battery case. Will it stay there or cause any problems in the future?

[@ishbhad]

Is it a good idea to hook up battery terminals to a power pack whilst changing the battery to make sure there is a continuous loop of power thus saving any reset problems ? My battery needs cha going on. 20111 C300 and I’m terrified of reset issues . Help please?

[@holygrail1702]

So you didn’t have to take it to the Mercedes dealership for the battery to be calibrated to the vehicle???

[@harryfine4432]

At the beginning you said group size 49R and at the end you said type 94. Which is it?

[@MegaRolley]

good job m8 but i hope it gets easier for you also my 2cents worth is connect earth in series mab then +

[@noyes7794]

Can you oneday try to change c class w205 licence plate led light?

[@mazenkanso]

Thanks for the video, the error disappeared once I changed the Voltage Converter Module, but on the screen the ECO light does not show up anymore and it does not start/stop even though the switch for ECO in the center console is on and lit green. Does it need some kind of hard reset. Thanks again

[@Jedi2155]

I have the same problem how did you solve yours?

[@mazenkanso]

@@Jedi2155 the problem was not soved . I tried eveything from buying an original module to buying a fake one to buying several scanners and all these did not resolve the issue. The only thing was that came from this was that the error message disappeared !!

[@joeb1366]

I bought a battery from Mercedes for my 2016 Mercedes C300, and they said if I replace it myself I have to bring it back so they can reset the computer so the car can identify the new battery and if I don’t the battery will only last about a year. They said it would cost $90 to do this. Is this true or are they trying to get more money out of me?

[@chasevillarreal7042]

Did you ever get an answer for this?

[@earag31415]

I realized your rear window override button light stayed stuck on. How did you fix this?

[@zumcles4098]

does this work on c400?

[@RobsCars]

Hi, I am looking at buying a W205 C250, and I noted that the red fuse tab/switch next to the battery is in the down position over the black. What could cause this? The car is salvage hence why I trying to be careful. Thanks for your help Kind regards.

[@robk9494]

Only thing missing is resetting the battery counter on the front SAM module.

[@joei.7935]

how do you do that?

[@anthonyhawkins3341]

I changed my battery in my c250 no problem ,now the interior lights do not come on automatically or off ,any ideas my friend ?

[@GaloCP]

I have been doing my research and it seems you need another tool to reset the computer, to tell the car that it has a new battery. Without it, it will "eat" up the new battery and decrease its life. Is this true and you need to reset it or there is no need? Thank you!!

[@omarrodas1734]

My 2016 c300 has a message in the dashboard saying STOP VEHICLE LEAVE ENGINE RUNNING, and apers and battery logo, should I change the battery to fix that message?

[@user-sn9oy2or2n]

What ever happened

[@eagle___empire3175]

Most likely

[@ibaadqureshi4589]

Do I need a memory saver ?? While replacing a battery on a w205 for 2018 ?

[@toastyAMG]

Would this be the same process on a 2019 amg c43? (w205, m276 engine)

[@Xairoo3k]

I am really confused. Just had my S205 in the service today and I told the guys that I have problem with my 1 1/2 years old VARTA AGM battery (leaving engine running message). I drive about 1x each week. Voltage is between 12.0 and 12.6. Now they told me that they initialized the battery (I just replaced the battery and bypassed it, was only unpowered for a few seconds). Some say you have to initialize it, some say you don't have to. Also I found out that the CTEK charger told me after 3 1/2 hours that the battery is fully charged - before the engine had trouble to start (tested twice, took a bit longer and I missed the strong noise) and the "leaving engine running" message also appeared. So the battery "should" be empty. But the charger can only charge it with about 17,5 Ah and the battery has 70 Ah. CTEK told me that Mercedes is known for charging problems, means... you should connect the charger directly to the battery and not to the jump start ports. Still have to test this.

[@jimmagnus1200]

If you put power to the jump start lug before removing the terminals, you keep the computer memory and radio presets.

[@fcpeuro]

Can certainly be a way around resetting your settings.

[@danielb-c9100]

I got a question how do you organize it because I wanna build a Basically any Gera motors parts fun the early 2 thousands that's my dream in my life What should I do

[@namast3127]

I know that some BMW models require programming when changing batteries. Does Mercedes need that too? ​

[@fcpeuro]

Most modern vehicles will require a battery programming of some sort, depending on the technology package they are equipped with!

[@djcop81romero22]

Great video, thanks for your help!!

[@FoxxMulderr]

94R, not 49R

[@Familyovaevrthing]

My 2016 c300 starts but the odometer shows battery icon saying check user manual . Also the information center says start car in 3 minutes. I replaces the battery .the car is still showing the battery icon and saying to start the car but the car is on and running . What am I missing ?

[@alex_288]

I have a 2013 c350 and was told that the new batteries need to be programmed into the car, Is that true?

[@tmcnair001]

What group series better is good for 2015 c300 4 matic

[@utube5361]

Don't u need to register the battery to the BMS so the computer knows that u are putting a new battery to the system ? Otherwise the system can work erratic if that's not done ??

[@andrezmartinez9658]

If I went to AutoZone and told him year and model should the battery work

[@thegoodlifegrind5065]

Great video! Instructed very well.

[@beemomusic]

My neighbor has this car , he ended up getting a new battery and changed it out..when he put the new one it it didn’t start but all the lights and interior functions worked..saw another video said to do factory reset in the system menu and still nothing…Mercedes Benz is telling him his jumping terminal is ruined and it’s gonna cost 2000 to replace it in order for the car to start…any clue or ideas on what the real issue is

[@sherzodlayev]

Blown fuse in that section. You cant replace the fuse there. Ou have to replace the whole thing.

[@Louisz14]

I got c43 and mercedes says i need to battery? Are you guys able to do both ?

[@mzee5533]

My W211 the main battery is in the trunk & I prefer to use the Bosch batteries on my MB

[@eugenekovalov9370]

Thanks a lot! It was very useful for me!

[@fcpeuro]

👍😎

[@100pyatt]

Video shows 94R battery... Not 49R ?

[@mohamohai9840]

Hi and thanks for the video, I replace the battery on my 2015 w205 however after replacement I have Charge battery error on the cluster when the car is running and Battery not charhed error in red when the car is turned off. Steering buttons don't work either! Can you please help to resolve the issue? Thanks in advance.

[@holygrail1702]

Mercedes told me you have to have it callabrated with them for 120 dollars does not have to be their battery installed

[@سلطانالمغربي-ه9ط]

I want more interest in Mercedes. We want more video to follow you from Saudi Arabia😎👍🏽

[@rjbinning7535]

Thanks brother

[@ericmundsinger6]

Thanks for sharing this great informative video on how to replace a battery. I currently own a 2014 C Class 300 that needs a new battery. Do you if any of the major retailers such as Auto Zone will do the installation as a courtesy if you purchase the battery from them ?

[@czechiann]

I just went to one and they basically told me they wont touch it incase the vehicle needs an update

[@HelloWorld-xw3yc]

Thank you for the tutorial!

[@fcpeuro]

Thank you for watching!

[@kingjeff3854]

Hi, is there anyone tryed to replace the battery and the vehicule went into anti theft mode after?

[@SimonChen744]

A screw fell into the battery area and I can't find it

[@DavidGriffin]

What if my car has a kill switch and I changed the battery

[@greyphantome2617]

Does the car lose memory of reading settings, etc when you have the disconnected?

[@fcpeuro]

Hi Grey, some models have aux batteries that can save those settings, but usually they do reset and will require you to set them up after the main battery has been replaced.

[@greyphantome2617]

@@fcpeuro thanks I watched your other video too

[@MrKlash2010]

Hi dear ..i purchased c300 from usa ...eco options is not working eco auto on & off ..what the solution ..kindly advise

[@JeeperZJ]

You'll need to have the car scanned for any potential issues and to have the auxiliary battery checked.

[@FirasHakeem-u9f]

This is amazing

[@FirasHakeem-u9f]

Wow, perfect 🤩

[@sertanagkus7889]

2015 c300e hybrid where is the main battery

[@fcpeuro]

Please feel free to contact our Customer Experience at [e-mail] for more help on this!

[@jonathanborst5653]

very helpful. Thank you!

[@fcpeuro]

Glad it was helpful!

[@Justsomeguy1015]

Don't you need a scan tool to reset the computer so that it does not overcharge the battery?

[@fcpeuro]

Hey Guy, not mandatory for this model.

[@martinfodor2848]

@@fcpeurothanks, where can I found a list of models that need to be registered? I’ve a C400 2018. Thanks!

[@MrDavidchuck]

It was cringe watching you do the battery replacement with your watch on lol good vid nonetheless 💪🏽

[@TheLithGH]

Thank you!!

[@matttumbusch3566]

After changing the battery on my 2015 C300 it appears that the car doesn’t recognize my key fob. Is there anyone that has experience the same issue. It won’t start with the button or by actually insert the key. The dashboard lights up but no bell sound like normal operation. Thanks

[@emoe40]

Very good vide0..Well done thank you

[@Crackgarden]

Thank you for posting this instructional video. 🫡

[@jfarinacci0329]

Good vid. thank you.

[@MardomTV]

VERY NICE VIDEOS :) THANK YOU :)

[@vasabond]

what about "reprograming" what dealers want to do? not just windows.. my 2018

[@danielb-c9100]

I am not much of a German car person but I do like similar early 2 thousands Mercedes but I just wish there's a company that makes car parts for Cadillac the CTS D TSF TS

[@everettbradley5467]

Does it need a battery Savor

[@fcpeuro]

You can certainly use a tender, just be sure it is compatible with the AGM-type battery you decide to run.

[@cbiskt123]

I love cars

[@V-CarChannel]

To keep the memory you should connect a 12v battery to neg and positive. Then the roof and windows would never lose the memory.

[@David-n5q2v]

There is an auxiliary battery in the car, otherwise yes

[@startingtech3900]

you mean 12v battery charger?

[@nah7140]

YOU LIED: on ur website and on this video the link u put in bio is not the same and doesn’t fit the slot, u sold me the wrong battery and the site says the fit ent is correct

[@hamidkarimi5576]

Thank you very much about you

[@vloors1981]

lol imagine my surprise when I looked at this as a guide and only realised after removing the cover that in RHD models they moved the battery to the other side

[@DanielGarcia-mw8zg]

No programming? Cool!