strange dead batteries
#1
Member
Thread Starter
strange dead batteries
I have a 08 s550 I have gone through 6 batteries 5 autozone 1 walmart within 24 hours they will drain to 5 volts it only draws 170 millivolts when off and locked I have tried to pull fuses and unplug the seat module none made a difference in amp draw I got no fault codes can't figure it out.
#4
Senior Member
Join Date: Apr 2016
Location: Colorado
Posts: 283
Received 67 Likes
on
46 Posts
2004 W240 Maybach 57
Check and re-check all battery terminal connections. Clean corrosion off all connections. Make sure the negative ground cables are securely fastened to the chassis for both batteries. There might be a sequence of disconnecting battery terminals--in mine it is 1) negative terminal consumer battery, 2) negative terminal starter battery, 3) either positive terminal can then be disconnected next...Re-attach in the reverse order: fit the positives back, then the negative starter battery and finally, the negative consumer battery. Read it in your manual.
#5
MBWorld Fanatic!
#6
Member
Thread Starter
I remove it from the battery terminal and I do notice arcing sometimes.
Trending Topics
#10
#11
Member
Thread Starter