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When u park the car over night the battry drains.

Tiny
ERICKSSON
  • MEMBER
  • 2005 MERCEDES BENZ E320
  • 130,000 MILES
When u park the car over night the battry drains I changed the front sam unit disconected the seat modules bt still drains and no message from the cluster wat could be the problem
Sunday, January 20th, 2013 AT 1:17 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You need to put an ammeter in line with the negative cable and remove fuses 1 by 1 till the draw goes away. Then you have to trace that circuit down to find the failure. Not an easy find, time consuming.

Roy
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Sunday, January 20th, 2013 AT 4:18 PM

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