2015 Mercedez Benz C300(W205) Auxiliary Battery FIX - IN REAL TIME
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- เผยแพร่เมื่อ 21 ส.ค. 2024
- Thank you all for tuning in to Super Mario Diagnostics!
Today will not be a diagnosis video. But instead a real time swap video meant to help those that encounter the same issue.
A bad secondary battery aka capacitor.
I hope this can benefit someone and can show how easy its done. It can be done faster if you don't drop the bolt like I did :D
I hope you all enjoy, like, share, comment and subscribe!
Music source: • Quasars in the Distance
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Thank you for doing this! Easily found and ordered the part next day on Amazon then easily switched it out in 20 minutes. $70 and 20 minutes of work at home vs $700 and leaving the car at Mercedes all day. That's a win in my book! Appreciate you!
For those looking, this is the part I got on Amazon - There are cheaper out there but this was available next day and 1 yr warranty - Bapmic 2059053414 Voltage Converter Module for Mercedes-Benz W205
I have a 2016 c300... bought the part on eBay for $60 bucks.. changed it myself using this video! The auxiliary malfunction message disappeared immediately. THANK YOU thumbs up 👍
Whats the part called please I need to buy one asap
Part number
You have saved my life!! My daughter has her driving test tomorrow here in the UK 🇬🇧. Last night I realised that if there are any fault warnings, then the examiner will refuse to let her take her test in it. The cost including Labour costs about £300 + VAT (Tax). So I followed your instructions and bought a Auxiliary Battery, fitted it and had the garage do the code. All done at )75 + VAT. Real time video is much better, so keep them coming.
Thanks again
Francesca
Where did you buy it from. Can only find second hand genuine ones online in the UK.
For which model and which shop did you buy it?
Thank you so much for this step by step real-time video. I just replaced the voltage regulator per your video. Saved me a ton of money because the dealer was going to charge me almost $500 to do it and I did it myself having only to purchase the part for less than $100. I did not have a computer to reset the code, but once I replaced the regulator, the error message on the dash went away. Hopefully this takes care of my issue for a while. My car was a 2015 C300 4Matic. Awesome video. Saving it in my favorites!!
May I ask where you bought the capacitor from cause Im having trouble on finding the right one
Raj Patel bought it on Ebay. Did a search on the part number. Cost was $71 and shipped from China.
@@joeleal77450 Thank you
Joe Leal was your eco start stop not working?
@@toddmiller8728 to tell you the truth, I don't remember because it was a feature that many times I would turn off. I just wanted to make the error message go away. Driving me nuts. Sorry I did not answer your question.
I have a 2016 MB C300 and the "Auxiliary Battery Malfunction" popped up an hour ago after I started the ignition. I panicked! Anyway, I took a chance and drove the car to the park to walk my dog. I googled for an explanation and found this TH-cam video. I am not a mechanical person and I hate fixing anything related to cars, so I think I'll just take the car to a mechanic. Thanks for the explanation and demonstration anyway, Mario!
What’s up Rafa , did it work ? I also have a a 2016 MB...
This video was very helpful. I was able to do it in 15 minutes and hardest part was moving the carpet. Thank you for posting this video
Great video. I replaced mine in 20 minutes without an issue thanks to you. For those wondering I have a RHD 250d and as you would expect the auxiliary battery/voltage converter is on the other side.
This auxiliary battery is for the stop start function right? My A with circle always yellow until one day of driving then goes back to yellow after a day as far us not used much
Hi, can you confirm the AUX battery is on the passenger side when working on RHD cars?
Mario all your videos are top notch. I realize they all can’t be live but you do an excellent job with them thank you much for sharing 👍👍👍
Good job mario! And not editing this allows everyone to see the struggles we face getting these cameras into areas that we barely fit in ahaha!
I’m liking that Launch too!
Yep the smallest thing can cause the biggest setback 😆 i loving this thing brother. Thanks for swinging by brother!
Just copied your instructions and it was easy. I’m in the UK and the part from Mercedes was £110. Nice to save a few hundred more in labour by not taking the car into Mercedes. Many thanks for the video!
Had this warning come up on my c250 , Mercedes wanted £166 to diagnose and then £397 to supply and fit the voltage converter, I bought the new part on Ebay from a proper Mercedes dealership for £100 and fitted myself in 40 minutes because of this video, Thank you Mario.
Hello, mate, same dilemma, however did you disconnect the battery beforehand? and did the error go on its own?, Mercedes is a rip off!
No i did not do either of those and the message clears on its own
@@SuperMarioDiagnostics cheers buddy, Great video btw. Much Appreciated.
Thank you so much from Germany!
I needed about half an hour because simple mistakes and slow working, but it was really easy! In this half hour I saved about 400 Euros.
You made my saturday.
Thanks so much for making this video. I had the auxiliary battery malfunction error this morning when I got in my car, so with the help of this video, I was able to take the part out and order a new one. Couldn't have done it without you.
Thanks this was very informative! It's 15 minutes for those with the tools on hand and some experience removing and putting back the plastic panels, but for the rest of us it'll probably take an hour or two, including the time it takes to run the nearest Home Depot to get the tools.
Another fantastic video, Mario, Thanks for the time and effort to produce excellent tutorials, well appreciated, Bless 🙂😇
Excellent video Mario, its pretty awesome seeing real time repairs. You have to be skilled and confident in your abilities to do that. Not everything is a 30 second fix.
I'm always looking forward to what's coming out next.
Thanks brother for taking the time 👍 it's good for people to see that even simple things aren't just in and out and done . Thanks for swinging by!
I did the replacement on a 2016 C-300. The job went super smooth thanks to your video. Thanks Bro!
I’m loving your real-time videos. Most guys edit for time and it makes things appear to always go smoothly and in short time. The struggles of dropped fasteners are real!
I’m also happy to see some of your Harbor Freight tools in action. All those people who don’t think HF stuff is useful in a production environment amuse me. I swear by their impact sockets and the Earthquake line of cordless tools. I abuse them daily.
😂 Yep all in man. Such simple things can draw us back lol. Yeah I'm pro-any tool that works! HF has some pretty good stuff, if it breaks, I upgrade. This earthquake line is great though! Hey thanks for watching bud!
K 0:13
0:16 😂
Thank you for showing it to us, Super Mario! Saw it, understood it, did it! Consumers become fixers ... need more of that. Herzlichen Dank from Zurich, Switzerland.
Thank you Mario. Your detailed video gave me the confidence and everything I needed to know to replace the aux battery (capacitor). The dash was indicating “Auxiliary Battery Malfunction.” Please keep up the great work!
Thank you very much for this video, it made the replacement very easy for me.
The notification I had on my dash was "auxiliary battery malfunction".
Dealership wanted $170 for diagnosis and then parts and labor, would have worked out to be over $500 total and got away for $130.
Can u plz tell me what code I have to put in after I replace it ?
@@fidibina711 no code was necessary when I replaced mine. Just drove around a couple minutes for it to notice the change
Thank you soooooooo much
@@fidibina711 mine just reset on its own when I turned in the car
Nope, wouldn't matter
Thank you. That helped a lot.
Mercedes quoted $450. Did it for $138 my self. Appreciate it.
Thanks for the vid. It's impressive how complicated mercedes made the car. It literally has a second battery buried deep behind two covers.
Great vid, many thanks - it worked for me. The hardest part was holding the carpet down, but no need to slit it, it can be kept out of the way to get the lower two 10mm nuts.
“Can’t go to auto zone and expect them to do it for you “ 😂😂
Thank you for making this in real time. These aux. battery malfunctions are so annoying as they block your screen from driving out from where it happened. In my case my phone map malfunctioned, getting me lost in residential, at night, during -44 frigid weather!! What an annoyance!! Now that I'm at home, safe & warm, it's nice to know I can prevent this from happening again. My question is will changing this aux. 2nd battery prevent these light & other accessories that drain power from my car's battery since I do mostly short distance trips at periodic intervals? Love seeing every step with real good lighting & proper tools for a quick swap out. 👍👏👏
Out here doing the Lords Work! Thank you!
Thanks for the video, this really helped me save a lot of money versus taking it to the dealer to fix! Next time u make a vid please include the part number in the description so I don’t have to keep rewinding and pausing the vid to be able to see it!
Lol take a screen shot 😆
On W205 Mercedes 2017, I had same fault code as you changed the small baterry like you did.. but i had stil the same problem and same fault code like you.. then i changed the 12V battery under the hood and it worked!
Excellent video. Great communication.
Very professional.
One of the best in North America.
thanks mate. this is the second time it failed so replaced with non genuine unit and managed to do it all by myself thanks to you.
It got me too! (W205 Juni 2014, ...004). With that video and a skillful hand it was fixed very quick. Thank you!
I found this super easy to replace by removing the carpeting from the passenger well, which requires unsnapping the plastic trim on the right of the footwell. Access to the panel is then easy and doesn't require unscrewing the panel above.
nice one Mario. I have done one of these last month and a motorbike style battery on another Mercedes this week. seems they are common! keep up the good work buddy
Thanks brother! Very common indeed. Easy fix, but Mercedes has a way intimidating the average person 😆
Just like Mercedes "Here you have a battery for your battery" lol. Great video bud!
never fails to amaze me how a dropped screw will always be 8 foot from where your saw it drop
😂😂😂😂
great video, mitchell was miss guiding me.
Great step by step video.. made it simple to switch it out. The only thing that gave me an issue was the first cover. I bent the hook on the back a bit. Other than that a breeze.. thank you for posting.
Great video, got the parts and followed the video, the only issue i had was removing the carpet but otherwise done in about 30 minutes. Problem now solved, Thanks
Hey Mick , did the code disappeared by itself after you changed the part ? Thank you !
The merchants in Greece told me that the w205 does not hane 2 battery thanks for the video I made it myself 🙏🙏🙏🙏🇬🇷👍💪
Yes, i think that videos like this, help us to replace some part of our car, because on the dealership they charge a lot of money, even thought if the part is too cheap.
Thank you! The fix also exactly applied to our 2016 GLC 300...
How did you reset that message on display console thx.
Was it the same part # as well?
And another happy Benz owner goes down the road......and will be back soon with the next problem. haha Great vid Mario and thanks again for sending me your YT channel sticker! It's going on my tool box now. -Glen
😂 Thanks Glen! I appreciate that! .... This one had its first failure at 40k miles smh
Followed the instructions thanks. There's a third nut to be undone you were missing. Also you don't need to have the code/warning reset. Mine went away after the first drive.
All real time repairs should include hunting for that errant bolt or nut. Haha. Thank you for sharing.
Haha 😆 i hope the ending made you feel better about the palm trees! 😆😆
Thanks for the video. I was suspecting this battery because the car does not start stop, but i think it is the bigger battery on the hood. Even with start stop enabled, car disables the function. Thats actually nice, but there has to be some reason why it does so..
Just did this!👍
Hardest thing was to put the first foot well plastic cover back in when I was done.i was there for like 15 mins.in the end it just slides right in
Thank you so much. Just fixed mine by myself. Dealership was asking for $450
Perfect instructions. Took me no time aside from having to go buy a 10mm deep socket. :D
Thanks for the video, always good to see you working.
Kellys Peppers I’ve change the battery converter and put the diagnostics clear the error Its working fine now not saying leave car in park it’s just that the stop start is not still working it something else
Great job explaining! It's probably the best I have seen so I had to subscribed to your channel.
Hello Mario. The light didn’t go away although I replaced it with an OEM part from Mercedes. Do I have to clear the code for it to go away because I didn’t. I simply unplugged the main battery terminals for 20 minutes and plugged it back in. The code showed up after 30 seconds
I have the same issue. Checked voltage on old and new converter and it's good on both. Anything else cause this problem?
Did you found out what else cause the problem
Any solution to this? I replaced the part but the error message sometimes comes back on the dash, especially when reversing camera is activated
Nice Mario. I had to leave Florida because of the heat. I'm a wimp.
Im from Florida and did the same!
Great video. MB in OKC wanted $400. Ordered the battery for $160. Saved a bunch
Where did you ordered from? What's the part number?
Yes where did you order from?
I suggest you guys grab the oe part. The part number is on the thumb nail of the video.
Best video I found. Thanks!
GOOD ONE MARIO , THANK YOU .
Thank you sooooo much for this video!! You’re a great teacher!
Unbelievable the things they put in cars and where they put them where do you go to find the location for modules. We have Mitchell at work but I have trouble navigating through it, of course I’m 61 years old and have only been learning this stuff for a little while thanks for the info and great videos keep them coming they’re a great help to me I’m going to try to make super Saturday
Love it when I go to jump these cars to find the battery covered in water, I often ask the customer if they tried to fill up the cells and if they though more would be better.
Great video. Just had this problem and your video was super helpful. Not to nit pick but, you installed the cover over top of the removable carpet :)
Threat job. And very informative. How do normal cars start without that?
Yes no need for that since they don't use auto start/stop
completed it today. thanks for the guide. C 450 AMG
Thanks for information and video. I really enjoy watching it. A A from Karachi Pakistan. 👍
Thank you for your time in doing this video.
Good video Mario. Cheers from Jay from Mauritius
Great vid thanks for stating the bolt sizes!
@Mario, i have a 2013 C250 Sport. It gave me the battery light yesterday then cleared on its own. Today the light came on again and the car turned off my stereo to save pwer i assume. I had the battery and alternator checked and the battery is good but the reading on the alternator said low voltage.
I didnt get the dashboard message that says to stop the car and keep running.
Could this be the Auxiliary power issue you had here or is this issue solely with the Alternator?
Just replaced mine thanks to you. Appreciate it
Thank you! You have given me the confidence to do this myself.
Awesome step by step thanks so much. Hate working on these pieces of crap lol.
Followed these instruction and replaced this on my car using a Genuine Mercedes part.. Very straight forward however the warning message just will not clear. No issues with the car. Runs fine. No battery drainage, all electrics working fine and starts first time everytime. How do I remove the dashboard warning message?
Yes, I do have the same issue. I did purchased the part online and its not original but compatible. Please advise how to remove the warning sign.
What code did you have in the scan tool? If the code isn't exactly the same, it could be something else, as this light will come on for several codes.
@@SuperMarioDiagnostics I did not get the scan tool, I don't have it. I called the dealer when the " auxiliary battery malfunction" warning came on my dash. I replaced and is still giving me the alert.
You'll have no choice but to get it diagnosed. At the very least get that code read. Not any code reader will access that module either, has to be a pro level scan tool. Another variable is the part itself, I'd never put an electrical part into a Mercedes that's not original. These vehicles have circuit tests that have expected results, and if that part isn't up to EXACT specifications, it won't pass/work.
Anything is "compatible" these days, but not everything is built the same.
@@SuperMarioDiagnostics Thank you Mario, I will do it and I do believe that might be the reason, I will order an original part also. Regards!
I enjoyed it. Thx for sharing Mario 👍
Good Video, thanks for the help - was almost as easy as you suggest and the issue was handled for $150 bucks. (The plastics were not at easy - had to fight with them a bit - thanks :)
you sir saved me many monies, for that im grateful, god bless.
Great video, I did the same thing but I still see the message, do I need to clear the code the part was brand new
Thanks a lot Mario for your help, very good video !
Thanks for the vid Mario you are the man! Question, why no diag on this issue?
Diag was already done prior to filming, and the focus of this video was simply on how to change the aux battery
Top man I’ve got the same issue with my C250 thank you
Hi, thanks for doing this video. Do you know if the procedure / part is the same for a 2016 C63?
Mario there are codes that accompany the low battery, did you happen to tag them in the description?
The only code i had was the one i showed Keith
Brilliant, took me 20 minutes. Thanks
How many miles we can drive with this code on I have same issue
Exactly what I needed, thank you so much, saved me about $250 and I am not handy, so bad actually that I forgot the flashlight under the floor carpet 😂😂
Thank you so much for this video… I DID IT !!! So proud of myself….
Good video. Do you have the electrical diagram of this aux battery? To which wires is it connected (like 87 maybe etc)> And can you give me the capacitance and voltage (surely must be over 14.4V) rating of the four capacitors (in microFarads/uF or miliFarads/mF or even if it is in the Farads/F range)?
Good one dude. Thank you for every details you went through.
Thank you so much for the real-time video. Please tell us what the part number was.
Mario, thanks you soooooo much! You are the man!
Simply amazing
Very helpful, thanks!
How long can I drive after this message pops up?
I believe this is just a backup battery, as long as your primary battery is good you got no single difference at driving.
I like this dude. Good shit. I’m subscribing
Great video, thx for sharing.
Cambie esa pieza pero sigue con el mismo código será la batería ? Mi carro es del 2016 y estamos en el 21 teniendo en cuenta que salió en el 2015 ya tiene 6 años de vieja esa batería
Despite me changing to a brand new aux battery from purchased from Benz dealer. "Aux battery malfunctioned" remains on my dashboard for 9mo now on my 2010 gl450. Any suggestions?
Thanks my friend. I have the 3015 c300 where the steering wheel broke in the up position. I can hear the motor running.ive read in the MB forum it's the "dog bone's. Can you show us how to replace it?
Great video man. I have this exact car with the same problem. Took it to Mercedes today they wanted to charge me $400 I figured I could do it myself. Where can I buy that battery at?
At the dealer lol
I also replaced the small battery like in your video but after mine sais error back up battery then.. it sais stop car leave engine running.. i have the same error code as you had
Would this error stop my stop and start from working on the car
Yes it will
Thank you really appreciated
Great video Mario I got this issue right now. Do you suggest a genuine replacement aux battery? There are some advertised on eBay also much cheaper but I’m concerned they might be not as good! Your thoughts please if possible?
Regards
Always oem with Mercedes
Please keep up the great work!