FYI I was lucky with this one - had this fault and the alarm was not triggering when waving arms in the car. In addition when cleared the fault would come back straight away.

The fix was to remove the fuse and re-seat and also to have a quick play with the button on the B pillar near the divers seat.

Alarm now works straight away and fault no longer comes back.

I know this is an old thread but I've got this fault! Could you tell me which fuse it is please? I'll try anything before having to buy a new one! Also what did you do with the button on the b pillar??

I know this is a very old thread, but I would like to know the fuse number too. And the little button on the B pillar does nothing when I press it, what did you do and how did you know that the switch worked at all?

Thanks!

Well, the b pillar button SHOULD do nothing, or rather it should disarm the sensors internally so the alarm doesn't go off.