Help w166 2012 ml350 bluetec battery issue
Thread Starter
Junior Member
Joined: Apr 2016
Posts: 22
Likes: 1
ML 350 Bluetech
Help w166 2012 ml350 bluetec battery issue
i need help. My main battery signal (red) on dash board came on yesterday.
I barely made it home. I purchase a new battery of the same specs from autozone to replace it. My car turns on but the red warning sign does not go away.
Do i need to reset the ecu. How do I do that.
I also don't know if I need to replace the aux battery I'm not sure where is it. Or if I need radio codes I need instructions. Need help.
Would like to do it myself and avoid going to a shop.
Thanks.
I barely made it home. I purchase a new battery of the same specs from autozone to replace it. My car turns on but the red warning sign does not go away.
Do i need to reset the ecu. How do I do that.
I also don't know if I need to replace the aux battery I'm not sure where is it. Or if I need radio codes I need instructions. Need help.
Would like to do it myself and avoid going to a shop.
Thanks.
MBWorld Fanatic!
Joined: Apr 2007
Posts: 2,430
Likes: 12
From: Cleveland Ohio
beater with a heater
its not charging, check alternator fuse, check voltage out of alternator at stud, if greater than the battery there might be a bad inline fuse. or your alternator is shot and needs replaced. battery is for engine off, car runs on alternator when running. hope that helps
