Mercedes Auxiliary Battery Change

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Detailed instructions on how to change your Mercedes Auxiliary Battery. Sometimes called the Secondary Battery.
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24 июл 2024

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Комментарии : 278

@debbieaesop2423 2 года назад

Absolutely fantastic, thank you so much. My aux battery has been dead for a while and I'm only just thinking about doing it. I've ordered the battery and it should arrive in a week and with your help now it will be so much easier - thanks again - LOVE AND RESPECT FROM AUSTRALIA

@MrSahlensguy 3 года назад

Just did this. A telescoping magnet really helped with the nuts and metal plate on the removal and reinstall. Great tip to move the seat all the way back to flip the carpet all the way forward. Easier job than I expected.

@kiwidadintheusa9334 5 лет назад

Thanks for making such a good instructional video! Much appreciated!

@wyattbelton2993 4 года назад

My dude I'm by far Not a mechanic BUT THANKS TO YOU I just replaced my battery in my 2007 gl 450...U ARE SOOO SOLID & SPOT ON WITH DIRECTION...THANK YOU! PLEASE show us how to replace the front headlight housing...THANKS AGAIN!!!

@eschrader 5 месяцев назад

Worked great. I had to take a flat head to the old small battery terminal and bend it 180 degrees to clear the cage. Installed the new one facing outside you have (genius). Cleared my 2008 white battery light (without the text for maintenance).

@lawrencebaisley7297 2 года назад

Worked perfect. I really loved the detailed description of the step by step (even things like moving up the seat, leave driver door open, remove negative battery cable first, etc...[all the tips, hints, and clues, even the socket sizes]) THANK YOU SIR!

@prosay 7 лет назад

Thank you for your excellent video. While I won't be doing the repairs myself, it gives me a better understanding of what is going on.

@iRepairAutos 7 лет назад

Glad the video is keeping you in the know. Mechanics can't pull anything on you when doing this job.

@user-fy1ih9lw1s 5 лет назад

It,s excellent and very helpful.

@christinab2942 3 года назад

Thank you for helping others with an excellent video 🙌🏻

@umitcakici449 3 года назад

Today you made my day; brown cable was loose, so the battery sign showed up. Only thing I had to do was connect the small brown wire! Now all ok. Thank you for the clear video and greetings from Amsterdam, The Netherlands!

@iRepairAutos 3 года назад

Awesome!!!!!

@jackneuman5917 5 лет назад

Followed your video and was easy to do. Without your video I would never have been able to figure it out. Thanks!

@iRepairAutos 5 лет назад

Glad you were able to do this!

@edhorn958 2 года назад

Good job, you are very good at showing the correct way to do things

@marcbovaird2388 3 года назад

Great Video! And never knew about the battery breather tube so important to let poisonous gases from battery escape out of the vehicle. THANKS!!!!

@kellywood5782 Год назад

you have a lot of very helpful videos, really appreciate it

@robbie3304 6 лет назад

Very good video , I always wondered where the auxiliary battery was hiding , now I know, thank you,

@denisepiatkowski778 2 года назад

Great video loads of ACCURATE information !! Thank you

@AB-sy9tf 7 лет назад

Excellent video and very helpful. Wow, MB knows how to make things complicated don't they?

@iRepairAutos 7 лет назад

Yes they sure do.

@AB-sy9tf 7 лет назад

One other thing...How can either the auxiliary battery or main battery be removed if the main battery is dead? Is there a way to move the front passenger seat while unpowered?

@iRepairAutos 7 лет назад

You will need to jump start the vehicle and keep it running to move the seat. Once the seat is moved etc. Turn off the vehicle and follow the steps in the video to zero out the car.

@andyroid5028 5 лет назад

*I heard a rumor that in one of those remote tribes' language, the word 'Mercedes' translates to 'needlessly'... & the word 'Benz' translates to 'over-engineered'.* It seems MB has defaulted to the act of (needlessly) 're-creating the wheel'... but evidently, the wheel is now being re-created in the most complicated of ways possible. : ( And it's all in the name of increased 'post sale' profit... and this is continually happening, even in spite of the *HUGE* amount of inconvenience being realized by MANY of their customers in the form of time consuming & expensive repairs. And as a (planned) consequence, the increased costs in labor/parts often times effectively creates a deterrent to budget-conscious owners desiring to perform their own repairs to their beloved MB vehicles. And you can count me as one of those owners. And again, due to the many models of MB cars that require more time, effort & money to fix the now bewildering complexity of often (normally) simple maintenance/repairs found on most other 'standard vehicles' (that aren't branded a Mercedes Benz)... many loyal owners are forced to forgo the DIY process & pay the *premium* prices being commanded for genuine MB parts & labor (performed by MB dealership service departments). It's just ridiculous. I think MB translates quite simply to... The Money Pit. And to be clear, I own a 2001 'money pit'... & I'm finally realizing that... the longer I own it, the more the car reveals (through unavoidable repairs/maintenance) that the overly complex ways in which MB designed & implemented many things... that these particular parts/systems, etc could have (and should have) EASILY been made... well... simpler. What's pretty disheartening to me is that when I was a young lad, I always thought that it would be a great day in my life when I could finally say that I'm a proud owner of a Mercedes Benz. For many years, I thought that to myself. And yes, when that day finally happened about 5 or so years ago, I definitely WAS as proud as I thought I would be. But years later, I've come to realize that way too much money... as well as many (needless) long hours have been spent on keeping my MB in 'top shape'. And again, I blame MB for these 'systemic issues'. And finally, as I end my long & winding rant, I'm realizing that all of this time/money spent has made me much more of a salty/bitter owner toward MB. And honestly, it's made me more sad (as opposed to being mad) than anything else. And I say 'sad' because I honestly feel the 'old Mercedes way of doing business' is not only gone... but I also feel that it's likely gone FOREVER. : ( Sorry for the long rant.

@MAGATonyG 2 года назад

Great video. I will do this tomorrow. Thanks a lot

@ambrosethomas1536 5 лет назад

Thanks for your response. Ok then, I recently changed the battery and all the preset were still operational,for example, all the windows and the moonroof opening up when holding the unlock button on the fob keypad for a few seconds. That did not change. I did look for one but did not find one.

@tomtom4633 Год назад

Great video, very informative! Hopefully replacing this on my customers car will rectify the stuck in P, there are a few more faults with the car which may also be associated with this auxiallry battery.

@kenmoon5685 3 года назад

Best video on battery changing I have seen!! One question: can I use a trickle charger on battery-using engine compartment posts-? Thank you,

@sikskillz2186 3 года назад

amazing info? the right information and to the point. awesome

@parvezbaig5404 4 года назад

Very well explained. Thanks

@kehindeadeyemi6267 5 лет назад

Very informational . I just ordered an auxillary battery for my 2006 ml500 and i will try and install myself using this video. Meanwhile, how do you tilt the steering on the 2006 ml 500? Never did since i bought it 8 yrs ago. is it electronic? If manual, am i missing something?

@tokoossrdc4692 4 года назад

Thanks bro for you top videos . Did you ever faced an ML320 w164 empty battry after 5 - 6 hours and diagnostic check didn't connect ? We tried all normal ways ... new battery , alternator ....

@hussamnoor1898 7 лет назад

Very helpful thanks

@jeffreycooper597 2 года назад

Thanks very well explained good job done 🤙

@156nunez 2 года назад

Excellent job and thank you

@braviafeed 2 года назад

Outstanding job!!

@happysawfish 4 года назад

Great video. Thanks. For 2009 GL320 diesel, getting an error when trying to start (it will not start) that says something to the effect of vehicle not in park, in red letters. Then says "Don't forget your key!" Wondering if low battery in key fob can cause no start, or if it's the small battery - or both. It did this before and would not let me shift gears. I discon battery for 20-20 minutes, it started normally. But all this fun weirdness seemed to occur right after I hooked up a cheap scanner to the OBD2 and tried to erase CEL codes. Immediately thereafter the car would not start and displayed the same or similar messages. What do you think?

@stephaniecarrico6982 6 лет назад

Is this where you would find the aux battery for a c320 as well? battery light came on replaced big battery and then a few days later the light came back on so maybe the aux battery needs to be changed?

@user-np4hx3hq4j 10 месяцев назад

Fantastic thank. But I need to change the auxiliary battery on my R Class and it's right under the driver's foot and next to the main battery under the seat

@candlemedia 7 лет назад

Such a detailed and fantastic video! Thank you for this.

@iRepairAutos 7 лет назад

Thanks! Glad it's helping.

@danoaks11 6 лет назад

Can you show this procedure where the auxillary battery is inside the cabin, under the glove compartment, like on Mercedes GLA 250?

@barryharrell3355 3 года назад

Thanks for tell me what the aux battery is for.

@smartchishaya1670 5 лет назад

hi brother from zimbabwe well done

@MrCuckoobox 6 лет назад

Great Vid. Thumbs Up!....Looks like you should replace both batteries at the same time if they are near end of life. Just FYI, if you are putting back the old "main" battery, you should clean all the acid residue off - soap and water. You can see light acid film on the top of the battery. Believe it or not, that can cause a drain on the battery because it is a "short". It will shorten the life of the battery. It is small, but over time it is a battery killer. You can also see a small amount of rust on your battery tray from acid leaks.......neutralize and clean. If you have time reseal with paint or rust sealant such as Loctite Extend Rust Neutralizer, 1381192. Using an "Acid Neutralizing" Battery Mat is helpful as well to preventing the rust from happening by adsorbing the acid. You can find them on Amazon. They are harder find in the larger sizes for the big batteries used by a lot of the luxury vehicles.

@iRepairAutos 6 лет назад

all good points! Thanks for taking the time to comment on the video. Your points will definitely help the next person watching.

@charjan7608 5 лет назад

Very thorough video. Appreciated. Last person to change my battery, left off the battery protection cover and vent cover and they cant find either.

@iRepairAutos 5 лет назад

Thanks! Sorry to hear that those parts are missing. You can find them at the dealership and or some of those auction sites. Good luck.

@sheikhlatif9512 7 лет назад

Is the axillary battery in the same location for gl 450 2007

@margaritacalzada1522 3 года назад

Would it be the same process for jump start or recharge the main battery of a 2008 diesel ml320 Mercedes?

@diamondstar1200 5 лет назад

Between that guy's voice and the organ music I feel like I'm at a Mortuary.

@iRepairAutos 5 лет назад

Thanks!

@havilisimeki8887 Год назад

Hi great video, I’m interested in rear parking lamp , one is working the other is not and I checked all the bulbs and they are all good. I have a Mercedes Benz R350L 2006. How would I go about getting the lamp to work again?

@Engineerboy100 7 лет назад

Good job, nice video, it sounded like I could hear your power steering pump going out in the back ground, you might want to check your fluid level on that. I gave you a thumbs up on this one.

@iRepairAutos 7 лет назад

I appreciate the comments and the thumbs up. The power steering pump is noisy - fluids are good. (Probably will change it out before it dies). That's a good observation!

@hungvuong8100 7 лет назад

I did the air filter changed on my 2007 ML350. When I put back the cover on and the metal cliff at the back which I pulled forward to hold the cover and felt off. How do I put it back in. I tried to hook it back on but some how it is too high. Can you help?

@joeybusby5748 4 года назад

hello, I changed the auxiliary battery and main battery on my 2013 s550 and still got the same symbol. Any ideas or suggestions?

@Sanhiriyan 5 лет назад

You said something about electronic status zero before changing the battery. So basically take out the push button start as well, AC off and keep the driver side door open? Where do I see the status as zero?

@EndlessXConcertgoers88 6 лет назад

Hi, I notice my c320 2001 the battery dies still even I replace the alternator and the battery; but still getting the visit workshop is this the main cause of the problem?

@kenmoon5685 3 года назад

I used the Amazon Aux battery replacement link you shared; the Amazon link advises me that that part does not fit my 2007 ML350?

@johnjacoby5657 3 года назад

Great Video , Should be same location for 2010 ml 350?? I have done my main battery twice and never noticed the small auxiliary battery which I'm going to change since it's 11 Years old..Thanks JJ

@edgaraleman1668 3 года назад

Hi! I'm having the same issue thanks to your video I notice where it was located the battery, I test the battery out the little out and it said 12v could it be that the battery even though it said that it's still have the voltage,do I need to change it or check other part?

@worldpeace5853 4 года назад

How long would the auxiliary battery last on an avg? Is it ok to replace it with OEM Duracell 1.3ah 12v? Do you change the main and auxiliary battery at the same time to be safe?

@shwndh 11 месяцев назад

Keith, you da man!

@abdullahal-saihati7651 4 года назад

Hello, can you help with location of 2014 mercedes sl auxiliary battery?!

@johnmunro4758 5 лет назад

I have watched several videos on this subject but none answer the question for my 2015 C-250. Does anyone know where the auxiliary battery is in this model?

@tedlu008 4 года назад

Amazing work, single handed!

@iRepairAutos 4 года назад

Thanks!

@EDGARHERNANDEZ-fh4pz 3 года назад

Thank you very much. I have a question 🙋🏻‍♂️: my ac in my ml350 it’s not cooling wheel , a test to see if it needs gas, but the ac gas it’s fine . . I have to replace the auxiliary batterie because is bad. And also the radiator is leaking very little . Do you know if one of this reasons maybe the problem with the AC??? What I Should do?? Thanks

@mygodisable2 6 лет назад

Great video. Thanks

@iRepairAutos 6 лет назад

Thanks for the feedback!

@siridezoysa2631 7 лет назад

Please can you tell me where is Auxiliary battery located in a Mercedes E220 Blutec 2015 Model

@remuslamare Год назад

can you pls tell me the part number for the vent port that is locate above the main betterie ! Thx

@super8524 4 года назад

Question is if you disconnect your main battery to chance auxiliary battery do you lose any save memory on you audio or navigation or any other equipment or do we have any other problem on any electronic device.

@user-yf4iy4xf3j Год назад

Please teach me how to replace the auxiliarybatteryon my 2020 Mercedes GLB 250 ,thank you

@blacdadi2023 3 года назад

This video is extremely helpful. Thanks a lot. But I have a problem with my sound system which is exactly like this very one on your vehicle. The issue is, I can't connect my phone because it keeps saying "Phone Not Available". I have tried everything but nothing works. It seems Bluetooth facility didn't come with the sound system. Any other ideas? Thanks.

@defimbungu2433 2 года назад

Thank You !

@TheRutt1962 2 года назад

First of all, you have very helpful videos! 🙂 Can the auxiliary battery cause the radio/back-up camera display not to come on? I have a 2014 ML350 4Matic and all the fuses associated with the radio are good. I am not getting any sound or display at all. I also disconnected and reconnected the main battery, but it's still not working. PLEASE HELP!!!

@yuberalpha3060 Год назад

Muchas gracias por el video, tengo un problema no puedo desplazar del todo mi asiento del copiloto automatico...por que es? Gracias

@NE_Patriots50 5 лет назад

I broke my shifter while car was in drive than I park the car and it went back to park and now can't shift into D or Reverse. Anything I need to do or reset? Thanks!!

@theadventuresofbellaandjos6435 Год назад

Hi i i have a 2008 meecedes E350 AMG I have a battery warning light on the dash, my regular battery is brand new and my alternator is good, i was looking for the auxiliar battery buth i cant find it any idea where it could be thanks in advance

@mikerphone7039 3 года назад

Hi 👋,,, I'm having issues with my 2001 mercedes slk 320 electrical system.... Latest issue is the screen wash pump won't work , I've checked pump is ok ,, question is , is there a relay for it anywhere or anything else that would stop it working 🤔 , eg the k40 board ..... any help would be much appreciated 🙏 👍

@richiericcardo317 2 года назад

I have a mercedes ml300 2009 make. Was sitting unused for a while at mercedes garage. They tell me they replaced main battery but when I eventually picked it up the auxiliary battery warning came up. After an hour or so drive ABS,EBV,ESP unavailable showed on dash. I parked it and tried to drive it the other day but has difficulty in changing gears I think it's in a limp mode. Does changing both batteries help me?

@MatthewsDentalAssoc 11 месяцев назад

I have a 2012 ML 63. I found the battery in right rear fender. I can't get the battery out of the holder after taking out all the nuts. Any ideas?

@aslr364 5 лет назад

Is this where aux battery is on 2010 r350?

@adesanyasawyerr9133 4 года назад

Nice video.... I had this same white battery sign on my dash board and my radio is talking out. I guess it’s cause of the battery. I changed it and the battery sign is still on the dash board. Could there be something else causing the white battery sign to remain on the dash board?

@FriseGroomingTimisoara 4 года назад

Hello sir I have a problem with my mercedes ml 320....its stiil blockbustere the navigatioon...it goes but I can not go to orders only from the steering wheel...the auxiliary battery is not changed...it may be from the battery????

@princetamakloe1600 7 лет назад

Great video! I've got a 2015 c300. any idea where I can locate my auxiliary battery? I've heard its in the trunk several times but I've removed all carpets there and still can't seem to figure out where it is. Thanks in advance

@tssandhu7027 3 года назад

check at the driver side dashboard on the side

@akujude 2 года назад

If the back up battery is removed at that point in time does it affect the car memory?

@JuanGarcia-kv7yv 3 года назад

Does anyone know if you have to reset the warning message once you replace the battery?

@sepulvedaapt 3 года назад

Thank you.

@jeanbaptistealmonor562 4 года назад

Hello, my Ml350 year 2008 only blocks on position P I do not know what to do or why

@btyme12 2 года назад

do you have to reset anything when replace aux battery

@danielbaker4820 Год назад

Would the auxiliary battery stop car starting I've got. Mercedes a class In it wont turn over I've powered starter up a. It runs (Pulled off cap of relay) But won't start unless u power up the. Igniter wire I checked wires on relay 12v on one positive main wire 3volts on live that powers switch for relay I'm assuming the battery powers up Sam units an alike So stopping it starting Will test will meter tomorro

@hobbsanimations8178 5 лет назад

Thanks Bro

@iRepairAutos 5 лет назад

Glad you're good bro

@alexidominguez9997 2 года назад

Mi auto ml 350 2011 me salió código de mal funcionamiento batería auxiliar. Si la cambio resuelvo el problema?

@alexidominguez9997 Год назад

Mi amigo. Muchas gracias por sus vide😊os 🤗😊🇵🇷. Cuando reemplazo la Vateria de 12 voltios. Me sucedió que la batería la habían montado con los polos o cables hacia adentro. Me dio un trabajo! Pues no podía ver. Utilice un espejo para poder ver y desconectar.

@doumeviaud3931 3 года назад

EXCELLENT ......

@buddygallo4061 5 лет назад

Great video thank you. I have a Mercedes ml350 2008. I need to change both batteries like you showed. Your saying I don’t need an external power source or anything to save the on board systems when I unhook the battery if the key is off and the door is open right?

@iRepairAutos 5 лет назад

That is correct.

@buddygallo4061 5 лет назад

Thank you. Your video was a great help and I changed the battery as you showed. I’m still having a problem with it not wanting to shift into higher gears. I can drive about 30 mph. Would you have any ideas? Also could you recommend a good code scanner tool? I have a 2008 Mercedes ml350 all wheel drive. I’m newly subscribed to you channel and I love it. Thanks

@iRepairAutos 5 лет назад

It sounds like your vehicle's transmission might be in limp mode. I recommend the icarsoft scanners. They are brand specific and available for the Mercedes. Low voltages and dead batteries have a way of messing with these transmissions. You may need to do a transmission reset . I have a video on that.

@qbennett8069 5 лет назад

I have a 2011 e350. Where in the world is mine located?

@shaeedbharath4931 3 года назад

I have a 2013 ml 350 is it the same this

@shelia7223 3 года назад

What year is this? I have 2010 where would the auxiliary battery be located?

@mr.selfdestruct1677 5 лет назад

Would this be the same general procedure for a 2014 Mercedes S550?

@iRepairAutos 5 лет назад

Yes. Aux battery may or may not be in the same location.

@Mzmellamzmella 3 года назад

iRepair Autos I did this changed the battery but it’s still not shifting

@babyheredia9336 3 года назад

help i need to replace fox box on my ml 500 2006 i find no videos .! help

@mauricemoore8472 5 лет назад

Hello, i have a 2012 GL450 with keyless start, should i be concerned with the system loosing memory as well. Should i try the all systems off and the door open method?

@iRepairAutos 5 лет назад

You should zero out the car to avoid losing memory settings etc.

@jcstarbwoi8794 2 года назад

I’ve had thesame issue just changed the Auxiliary battery the message is gone but one issue my radio on screen display is not coming on. Could you please help?

@davidsountris6201 4 года назад

I have been searching your channel and others looking for help to diagnose my 2005 E500 4Matic Cruise Control issue. My problem is that at exactly 50 MPH or higher, cruise will not engage, below that speed it works fine which is terrible because anything below 55 or more is often stop and go traffic. I am reluctant to think it is a speed, abs or other sensor because it works up to 49 MPH. Once I try to accelerate using the Cruise stem and reach the magic 50 MPH it shuts off. Any thoughts are welcome. The Curmudgeon Man.

@iRepairAutos 4 года назад

Hmmmm. Do you have an icarsoft scanner. It will tell us exactly what dtc error codes your cruise control system is throwing.

@debbieaesop2423 2 года назад

Not sure if you monitor these comments as I know you have a lot of helpful videos going on but my GL320's battery goes flat if I leave it in the garage for more than a week. is this normal? PS. Just found out that my rear power outlet is hard wired in as it has a rear dash cam that monitors 24/7..........would this be the problem? Thanks again and more LOVE AND RESPECT FROM AUSTRALIA

@khaledKhaled-du1pb 4 года назад

Hi dear my ml350 2009 I cant start my car when I press the start button not start but theres power but when I restart the battery car start ?

@maverickallen301 5 лет назад

Hello. Is anyone familiar with the location of auxiliary battery on a 2013 CLS550? I have searched most places.

@tri0xin 7 лет назад

I've got a w211 2003 e500 I'm replacing the main battery.. will the auxillary battery keep power to the electronics/computer while I'm changing out the main battery?

@iRepairAutos 7 лет назад

Great question! No - the auxiliary battery is for the gear selector and the brake assist. You can avoid losing all your settings by making sure all of your components are zeroed out (completely) off. See the video above on how to do it. You can also connect a settings saver (plugs into your cigarette lighter) but I'm not a big fan of those....

@iRepairAutos 7 лет назад

No the auxillary battery is for the braking system and gear selection if the main battery is dead. I show how to keep all your settings by zeroing out the mercedes in this video. Please look at the video Thanks.

@BKLYNBOY7 6 лет назад

i can't find anywhere how to replace the auxillary battery in a 2012 CLS 550, it's located under the drivers side dash and I am supposed to remove the cover under the dash but there are too many wires and the lever for the trunk release connected to it! how do i do this without damaging something? thanks

@iRepairAutos 6 лет назад

+BKLYNBOY7 get a bright flashlight, and be patient. Look behind all the wires. It's up in there.

@rattybe27 2 года назад

Nice

@edwardwillis3170 5 лет назад

I have a 2011 ML350, this video is dead on for the battery change, works for main battery also. Also did not lose the codes, per the instructions. HOWEVER if you are changing the Auxiliary battery for the first time, the bracket that maintains the auxiliary battery has to be removed and that is a pain in the arse. The tab only works if you have reversed the battery position so the leads are toward the inside the vehicle rather than toward the outside.