Mercedes c-class 2006 200cdi battery drain!

im trying to get some help in sort out my car, I’ve read on here about a block heater could be at fault. Has anyone got any pictures or help as to where it is?

or anything else I should try first?



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MercedesMedic made a comment.
1 year 3 months ago

The problem could be anything from seats, SAM module, audio gateway. There is no way of knowning without properly diagnoisng the fault. 


What you need to do is grab a digital multimeter.  Let the car parked for at least 20 min with trunk and doors onpen so that you can access the fuse panels. Start pulling fuses one at a time and check for current draw. There shoudln't be anything ddrawing over 0.5A. 

Once you find the fuse that draws more than that, you found the system that has the problem. Remove the fuse until you fix the underlaying problem.


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