e39 Alarm Problem

[Puppeli]

Very hard to go anywhere if you need to lock your car. Alarm goes of without reason. Sun comes out behind clouds and hits the car and the alarm goes off. Little wind or loud bang (nothing too much) it goes off. Leave it for 10min and it goes off. Took it to BMW and they didn't even look at it and their opinion was to disconnect the alarm. That is not an option for me having a full option car and wanting to keep it like that. To me the service at BMW was rude and not very professional.

Does anyone else have or had problems with BMW alarm and how did you get it fixed? Is there commen problems on doors or hood or trunk sensors that I can try? Any idea of how to investicate?

My car is e39 540i -97.

[kstinius]

Originally Posted by Puppeli

Does anyone else have or had problems with BMW alarm...

My car is e39 540i -97.

An an interim measure you should be able to disable the alarm each time you lock the car by pressing the lock button a second time. Verify that the blinking light on the rear view mirror is NOT blinking - that should tell you the alarm is off. [I'm assuming this is true for the early E39s].

I have never seen any description of a way to decrease the sensitivity.

Regards,
-stephen
02 525iT Sport Wagon sp
Myrtle Beach SC

[Puppeli]

Thank you very much Stephen for the helpful information. I would like to have the alarm working too if I can so any ideas where to start?