Botus
Senior Member
I was at an indie in the spring, some bloke with 2011 or 2012 a v8 turbo w221 had just fitted a main battery to fix same issue.... it didn't help. Put on STAR and decided the other battery was at fault. Fitted genuine Merc second battery fault still present.
After much scratching of heads they decided it was control module at fault...
After much scratching of heads they decided it was control module at fault...