bullrider313

I’m having the same issue. I replaced the aux battery and it’s still doing the same thing. The link for the battery behind the dash doesn’t work?

vdubpower

If this is not working then what are the options in order to sort out this issue.

MunjiV

I've had "Auxiallary Battery Malfunction" on the dash for a good 4-5months now and only just manage to get around and fix this. Ordered the part from A2059052809 Auxiliary Battery Voltage Converter (xenons4u.co.uk) arrived real quick.

Located in the passenger side footwell remove the plate under the glove box, pull back the carpet and then remove the back plate you will find the part.

replace the part put back together and you should be all good.

Tools required
T15
sockets
10mm long
8mm short

no diagnostics required.

bullrider313

Thank you for the info. I'll give it a try!

Semih Atabey

I also need for this remedy. Does anybody solve the problem or found out which cable is this?

revolutionml55

Anyone figure this issue out?? Change both battery the big and the small AUX on my 2013 G63 AMG and lights all on and car doesn’t start.
did anyone figure out wich wire the dealer replaced????


thanks

arthurG63

hi guys I have the same problem with my G63 from 2014, AAS defective come on the dash board and after this I can’t open or close windows, if I stop the car the car cannot restart until 20/30minutes, key cannot close the car. We changed both batteries and problem still here. If anyone find something pls tell me thanks