red battery light visit workshop
Thread Starter
Newbie
Joined: Aug 2010
Posts: 1
Likes: 0
2004 e320
red battery light visit workshop
i just recently gotten the red battery light visit workshop sign. and since i gotten it a week ago. i been having problem with starting my car. sometime it would start sometime it wouldnt. i replaced the battery in the trunk. it drove fine for a few days without giving me trouble about starting my car. but it is doing it again now. what else could be the problem?
p.s i drive a 2004 e320. any help would be appreciated. =]
p.s i drive a 2004 e320. any help would be appreciated. =]
Senior Member
Joined: Sep 2006
Posts: 413
Likes: 3
2003 E320
This is probably the longest ongoing thread on this board. M-B certianly did not win any friends with this set up. You probably know there is an aux battery in the engine bay under a plastic lid near the passenger side firewall. Both batteries tend to fail within the same year. Also, there is an alternator recall and a device called a BCM (battery control module). I have no idea how to test it. Several people on this board have posted extensive information about trouble shooting and repair of these parts. Search "red battery light" or "Auxilliary battery" There is another warning that mentions reducing electrical load by shutting down non essential loads in a methodical manner (seat heaters, wind screen defrost, radio etc. Sometimes that one appears on the dash display as well. I would guess that 75% of these problems are related to battery age. It is a common fault and USUALLY not terribly expensive.
Member
Joined: May 2012
Posts: 149
Likes: 1
From: Lubbock, Tx
E350
