W211 AMG Discuss the W211 AMG's such as the E55 and the E63

Battery drain, AGW fan? Fuse 6 in trunk.

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Old 12-26-2016, 02:34 PM
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2012 E63 AMG
Battery drain, AGW fan? Fuse 6 in trunk.

I was waking up to "Low Battery, Convenience Features Disabled" regularly. I tried a new battery and even got a new alternator installed. That seemed to fix it for awhile, then it started again. I kept hearing a whirring in the trunk (driver's side) long after the car had been switched off. Friday I pulled out a 40 milliamp fuse at #6 in the trunk fuses and the whirring stopped. Now my car is behaving normally with no warnings.

My indy shop said there is a cooling fan in the Audio Gate Way that is a notorious source of battery drain. Since I have a custom head unit and amp, the plan is to keep this fuse removed.

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