Rather alarming problem!

[Waynester]

With my alarm!

Since Friday when i unlock the car using the remote fob or key in door, the car unlocks fine but then the alarm starts going off...driving me nuts!

Never had a problem with it before??

Car unlocks/locks fine but....as above

????

• 523SE '97

[akita1]

Check the bonnet switch pretty common fault i think.

[Waynester]

Thanks, i did check that and 'looked' fine.
Ill take another peek.....

[Waynester]

I have looked at the switch/plunger and seems ok. I cleaned the connection, i evendisconnected it, but no difference.
Any thing else i should check as this driving me nuts,,,ta

[MarkwG]

I'll offer the "reboot" solution, then: have you tried disconnecting the main battery, then reconnecting after 20 mins? It sounds a bit like the alarm has gone out of sync with the central locking, such that unlocking is arming, rather than disarming it? It might not help, but won't do it any harm.

[Remagel2507]

Had similar problem with a 99 Z3 - alarm module ( I think) had water in it - might be worth having a scanner put on it and seeing what codes come up. If you have a few then you should probably get them cleared, wait until the alarm goes off again and then re-scan to see if you can see what might be triggering it