my e39 battery drain problem

[jeff002 23]

spend a day to find out battery drain problem.brand new battery dry in a night.

problem is fuse #57.power for the stereo .anyone can tell me replace another factory stereo of after market which way better.

thanks

[hotwire 352]

I can't recall fuse 57 circuit offhand but quite likely more circuits on it than just the radio. I would doubt the radio itself is faulty, there are other more common issues for battery drain in the E39. I suggest getting it checked by an auto sparky

[Neal 546]

Does it have a factory or aftermarket bluetooth system?

If the tel on signal is high it make keep your stereo and amp on after the car has been turned off.

[OneStep_TwoStep 21]

I've posted it in a previous thread before but check out the wires in the flexible hose that joins the boot lid with the car. On my old e39 there was loose wires that were shorting out and preventing the car going into sleep mode. 15 minutes with some solder and electrical tape and she was sorted.

[jeff002 23]

Does it have a factory or aftermarket bluetooth system?

If the tel on signal is high it make keep your stereo and amp on after the car has been turned off.

it use to have a phone on it and I already disconnected it.

[jeff002 23]

I can't recall fuse 57 circuit offhand but quite likely more circuits on it than just the radio. I would doubt the radio itself is faulty, there are other more common issues for battery drain in the E39. I suggest getting it checked by an auto sparky

#57 is the telephone,but I already disconnect the phone before I tested.

Edited January 4, 2014 by e39 tour

[Neal 546]

Try taking the plug out of the Telephone module.

[jeff002 23]

Try taking the plug out of the Telephone module.

where about the telephone module?

[jeff002 23]

finally disconnect the telephone transmitter