ALARM PROBLEM

I had the same problem. Discconnected the bonnet sensor about a week ago until I can get to BMW. and the problem has gone! :)
 
Hi guys.

After a long and frustrating search I am a proud owner of a black Z4 Coupe! Used this site a lot to help me out when deciding which car to get, so thanks everyone!

I’ve had the car for a week and am having the same alarm problems as other members on this thread. Just tried investigating the bonnet switch, but was a bit too dark for me to figure out what was what. How do you take it out? Is it as easy as just pulling it out?? Will have a look in the day time at the weekend. Will keep you guys updated!

Thanks!

Zed (yes that’s my real name :D)
 
I have a 56 plate 3ltr Si Sport coupe, 60,000 miles, had the same problem, at first the car alarm would go off shortly after locking it when i had been driving quickly. the problem deteriorated over about 6 months and got worse in the spring summer during the day time. I took it into an independant in Slough, and he fixed it along with an inspection 2, wiper blades, bulbs for £480. On the itemised bill it looked like £25 for the part and labour on the bonnet catch. The alarm problem is solved, and with the service the car feel v sharp.
 
Picked my new Z4 up yesterday... Perfect.

This morning, checked oil, screen wash, etc and alarms been going off all day.

Found this thread and replaced the bonnet sensor. 15 minutes and no alarm problem.

Looking good. Thanks Folks.
 
Ref. Alarm problem. I have had the same bother. I disconnected my bonnet sensor. That didn't help. Mine was even going off while driving. After reading about it on lots of different forums. I charged my battery and this has sorted it. A weak battery seemed to be the cause of it. It's been fine for over a week now.
 
Anyone have a part number for the bonnet alarm switch. Local dealer insists its £103 would be great if I could quota him the par number
 
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