How to replace Mercedes auxiliary battery! Fixing Auxiliary Battery Malfunction dashboard error.
If you are experiencing an Auxiliary Battery Malfunction error on your dashboard, then watch this video. I will show you how you can replace your bad auxiliary battery. And if you have no clue what or where your aux battery is, then you definitely need to check this video out!
THINGS MENTIONED IN VIDEO:
Genuine Mercedes Aux Battery (Part# N000000004309): https://amzn.to/3EPaomb
Ratchet Set: https://amzn.to/2ZSUXtI
Multimeter: https://amzn.to/3bIrPbm
Pry Trim Tool: https://amzn.to/3bIrPbm
TIMESTAMPS:
0:00 – What is an Auxiliary (Aux) Battery?
1:02 – Auxiliary Battery Malfunction Message!?
1:47 – Where is the tiny Aux Battery located?
2:44 – Accessing aux battery…is it easy?
4:55 – Closer look
6:01 – Reading multimeter output for old battery
7:16 – Installation of new aux battery
9:08 – Checking for errors
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Is it charging while driving like the main battery?
nobody ever got electrocuted working on 12vdcp
How do you remove the auxiliary battery malfunction message from the dash?
Thank you so much ,but mine I have replaced the auxiliary battery the error continuously showing what could be the problem.
Awesome instructions. I was wondering where the F was the battery located. The dealer told me it is under the cluster but did not say where exactly. Hope to see more content from you.
Great video so clearly explained…..good job
Hey, by any chance do you know the location of an axillary battery in a 2014 CL 550?
Great video, very useful thank you.
I have a UK spec 2010 model so it’s the same but opposite.
Couple of points to note:
1: If you’re using a non MB battery replacement check the terminals as the one I had, the terminals were the other way round. Sounds basic but you can’t teach stupid.
2: If you’ve got hands bigger than a 5 year old then it’s a tricky procedure. The hand brake cable gets in the way and as soon as you release the holding bolt the battery and cradle drops. For those with bigger hands I’d suggest undoing the trim under the steering wheel, 3 torx screws, and getting your hands up and under and dropping the battery down that way. Fit the new battery up and under too. Saves the faffing with little piddly gap. You shouldn’t need to remove the trim totally as you can move it out the way to create the space.
You need the hands of a 6-year-old to actually get in there and do anything.
The glk250 bluetec diesel US models aux battery is also located in the driver side dash under the A pillar
Thank you! was very helpful.
Another BANGER!