auxiliary battery

Bit of an odd one: Just been away for a week, and left the car in the airport car park in Manchester. Got back, everything fine, but the time on the dash was wrong. Like, completely wrong by a few hours and some minutes. I had to stop and set it because it irritated me, and now it seems fine...

Hi The dashboard is showing the Auxiliary battery is malfunctioning. it’s a 2016 E220 Estate. It’s been a brilliant car to ferry me and the two large dogs about. But the last 6 weeks been iffy. I have been to 4 garages just to get some info and then thought let me check the car forum. Over...

I am getting the auxiliary battery malfunction warning on my E class estate 2014 CDI 250. I am planning to buy a replacement and fit the battery myself but I am a little intimidated by the two batteries and all the electrical parts and computers. Is this a DIY job? Is there a procedure I need...