Alarm that won't shush......

B

bimersmile

Member
My alarm keeps going off. Interestingly, the window switch had also just stopped working, could they be connected?
Dont wnat t rush to to the stealership as i've just had lots of work done.
Any ideas please?
Thanks guys, replacing the bonnet latch worked and was a cheap job too. :)
 
An odd post for the detailing and bodywork section ;)

I'd guess faulty wiring or faulty sensor. How good are you at electrics?
 
The alarm issue is often caused by a faulty bonnet sensor. Try disconnecting it and see if that quiets the alarm.

The window issue is likely unrelated.
 
bcworkz said:
The alarm issue is often caused by a faulty bonnet sensor. Try disconnecting it and see if that quiets the alarm.

The window issue is likely unrelated.
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+1 100% bonnet switch (well documneted fault) :thumbsup:
 
I currently have the same issue with my car. Although I find it only happens in the cold.. I have no idea why. After reading this I'm going to have a look at the bonnet sensor, but does anyone have any other ideas that I can check at the same time to rule everything out?
 
My alarm goes off only when i park the car in sunlight. When it is in the garage or parked at night outside it is ok. I checked the bonnet sensor and cleaned the wiring with connection cleaner but nothing. I believe the problem comes from the sunligting combined with maybe shadows etc.
If i disable the alarm by locking the car with the key in the door it is ok. I also tried once to disaple the interior sensors by pressing the lock key for a few seconds after locking until the alarm lamp lights faster i think and it did not go off. Very strange things. I gave up and lock the car with the key when it is parked in sunlight.
 
DanGibert said:
I currently have the same issue with my car. Although I find it only happens in the cold.. I have no idea why. After reading this I'm going to have a look at the bonnet sensor, but does anyone have any other ideas that I can check at the same time to rule everything out?
Click to expand...
Mine was same fault, I disconnected the bonnet switch entirely... I left mine disconnect for a week and had no more random alarms! so I got a new one from bmminiparts :)


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I just had the exact same thing happen to me ..

Took the advice of the Forum and disconnected the bonnet sensor and problem solved.. :thumbsup:

Just goes to show what an excellent Forum this is for advice.. :thumbsup:
 
i have just fitted a new bonnet switch as mine was doing the same. £11.30 from my local BMW dealer and its been fine. easy job to do, but try unplugging it first and if it stops going off you know its the problem. :thumbsup:
 
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