Alarm keeps going off! - BMW Forum

beachcomber_bill · 02-22-2007, 08:10 AM

My '98 540 has a recurring problem with its alarm. Nearly every morning (between 8:00 and 9:30) the alarm goes off, with no apparent trigger. It seems to happen when the sun hits the car after a cool/cold night. Does anybody have the same problem? Any ideas on a fix? Thanks!

winters97E39 · 02-24-2007, 03:48 PM

the alarm on my 97 528 is ultra sensitive as well.. I did nail it down to one thing though... .my Blackberry...if I am standing right next to my car, or if I leave my phone in my car, and I get an email or a phone call it will set the alarm off every time! It has gone off for no apparent reason though, a few times.

I guess I would rather have a sensitive alarm than one that didnt go off when it is supposed to..

CosmosBlack · 02-24-2007, 11:44 PM

Your dealer might be able to adjust the sensitivity.
I have a friend with a E36 328i that goes off in the middle of the night.
It was over sensitive, and the dealer did some adjustments which solved the problem.