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Showing results for tags 'battery drain'.
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I have a 1996 E39 523i, the battery keeps draining and I'm not sure why. It has a new alternator and a new battery, when the car is running the old battery was reading 14V so that rules out the battery and the alternator. It was fine for the last few weeks but now it drains very fast, last night it was fully charged then today I drove it to school then to work and then home which are all only 5 minute drives from each other, when I pulled into my driveway and parked everything started dieing including the dash lights turning off and the engine trying to stall but then the engine kicked up revs to keep running with the alternator. When it has died and I try to use any power there is a clicking sound from behind the dash, I'm not sure if this is normal or not. It was already doing it with the old battery which was 6 years old so I got a new battery yesterday and it is still doing it but now the battery dash light is also on which it wasn't with the old battery, I may be able to run it on a diagnostic tool tomorrow. Any thoughts/help on what it could be would be much appreciated *SOLVED* Turns out my new alternator had a faulty regulator but it is all fixed now
