Dodgy Alarm

[undone]

Hi all.

I've had a quick look through the forum but couldn't find anything that quite fitted the issue.

Whenever I use the remote central locking to lock the car the alarm goes off after about 30 seconds. This is happening so often that I now lock the car without arming the alarm. Doesn't seem to matter if it's soft or hard top and the doors and boot are properly closed. Could anything be interfering with internal sensors?

Any suggestions why this is happening or any way to fix it?

[vet111s]

Can't help with a fix but mine does the same-makes a noise when I arm it then the alarm goes off 30 secs or so later. Just assumed it's one of the door sensors not wired up. I just don't manually arm it, it automatically arms the immobiliser after about a minute

Ali

[j2 lot]

I had a similar problem with my alarm. Had to get the siren unit replaced as it was faulty £100 +

[robin]

Check that each of the four door/panel sensors is apparently fitted ... one under bonnet, one under boot lid, one for each door. If fitted, for the boot/bonnet ones you can also check that the wiring loom is actually plugged into the switch.

It's not uncommon for the boot one to get dislodged, or left dangling after being removed for some reason. If the switch isn't correctly position, closing the lid won't close the switch and then the alarm goes off. The other option is that the microwave sensor has gone bonkers. Read your owners manual on how to enable the alarm but disable the microwave sensor (this is normally what you need to do if locking pets/children in the car). If you arm it with the microwave sensor disabled and the alarm no longer triggers, you know where the fault lies.


Cheers,
Robin

[undone]

Thanks very much for the replies.

Cheers Robin - I'll check the boot sensor tomorrow when i've got some light. It in a bump a while ago and the boot was certainly taken off.