Barmy alarm....Please help

[ebonygod]

Crazy alarm

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Hello Everyone, My alarm is really driving me up the wall. It goes of intermittently, I have noticed that it happens a lot as soon as the sun shines. If it is a dull or rainy day it doesnt happen and it hasnt happened at night apart from one night that I came racing home and it was very warm. Someone suggested that it could be a sensor..has anyone had this happen to them and if so what was done to sort the problem out and also did it cost much?

By the way the car is a 1999 523 sE

Thanks

 

[bonswa93]

My 528 has a hyper-sensitive motion sensor and will occasionally give a false alarm - especially if the sunroof is left in the tilted position(???) Try deactivating your motion sensor by pressing the lock button twice when locking. All the other alarms will remain active. I have noticed mine does not give false alarms when I do this.

 

[Abdoman]

I have had the same problem on my 528 and had the motion sensor replaced. Fixed the problem.