Joey Yong

Hi today my car (a class w176) show error Auxiliary Battery Malfunction. i have found 2 item for this problem 1 is Control Unit Voltage Converter A2054400073 another 1 is AUXILIARY CAR BATTERY A0009829608. anybody here facing this problem before? i need to change battery or voltage converter?

vfxcxn0309

do you know where this battery located, how often you drive the car?

marcio.ota

Hi Joey, found the solution?

A. Riso

Hi
I have an A Class W176 I just got a battery by chance I changed it last month, very expensive as ****

vfxcxn0309

if you have a battery charger connect to your main battery, you will never have this problem.