I have a 1989 300E that when locking the doors, it unlocks itself. Why ?

I have a 1989 300E that when locking the doors, it unlocks itself. Why ? 2 Answers

I have a 1996 E320 that the transmission when I am driving it drops a gear down and keeps the engine revved up? Any suggestions on ruff shifting? 1 Answer

The car down shifts when I am going 60mph and it is rough when shifting! Any ideas on what this could be?

I have a E350 2014, received the signal Auciliary Battery Malfunction. What is it? is it serious, should I take it to the Dealer under warranty? 7 Answers

I have a E350 2014, received the signal Auciliary Battery Malfunction. What is it? is it serious, should I take it to the Dealer under warranty?

I have a 2001 E430 Mercedes Benz that knocks(clunk) when i coast, accelerate or decelerate too quickly. The sound comes from the rear mostly maybe left rear? I installed new rear flex disc. Any Ideas? 1 Answer

The sound comes from the rear mostly, maybe left rear? I installed new rear flex disc. Any Ideas?

I have a 2011 550 cabriolet. It has only 25k on it yet it has gone through two batteries already. Why? 2 Answers

25k miles 2011 cabriolet 550. It has already gone through two batteries. Why