My Rover 25 has started waking us up during the night. The rubber grommet round the switch in the engine compartment has perished causing the fault (I think) and it goes off several times a night. Nowindows or doors are open.

John Hetherington, June 2006

I have similar in Rover 400.
Rear door switches were corroded, just pull tops off (mind the springs) and clean contacts & Wd40. Put a multimeter on it and check just a simple On-Off.
But turned out to be the one on the bonnet catch which ment taking off the front bumper (not difficult) there is a micro switch right in the center of the catch mechanism with a little lever arm. Mine was gummed up with grease. Again simple On-Off check with multimeter at the connector. If not work bung up the horns.

Kryton, March 2007

The alarm is a bog standard factory installed alarm from Rover. It isn't a motion alarm just doors and bonnet.
cheers
John

John, July 2006

let me know the type of alarm........factory fitted or local company did fit it, has it got ultrasonics / tamper protection etc..........
thanks

ian, July 2006

disconect fead to switch or ducktape switch in closed position to verify faulty switch. if fault stops replace switch or ajust bonnet catch/lock mechinisem. if fault persists repete procedure with door switches

allan, July 2006