My battery will not hold a charge. I hear a constant clicking noise behind my ac/heater whether the car is on or not. When I take the fuse out...it stops.....when I plug it back in...all the lights get brighter and the noise eventually comes back. Any ideas on where I start to fix it?
So the noise is present whether the keys are inthe ignition or not? As long as the battery has a charge the clicking noise is there?
Does the frequency of the noise change when you start the car and change the fan speed settings?
What is powered through fuse 20?
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2011 BMW E38 728i
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