Quite alarming

[Leomas]

Now here's a thing. Several times recently my alarm has gone off for no apparent reason, twice I have been close enough to see that no 'little gentleman' has been around to encourage it and this morning I was signing the postie's little book to accept a letter when it went off right in front of me.
The car is parked facing South so I wondered if it was possibly heat related? Clutching at any passing straw a bit here.

[Marks DTM Calib]

Check the bonnet switch mounting bracket is not bent......you can unplug the switch to prove if this is the cause.

[tmx]

disconnect the bonnet sensor or renew the bonnet sensor and see what happens!

the bonnet sensor lives strangely enough under the bonnet on the passangers side near the scuttle plate / pollen filters its a little stick thing with a ruber gator on it

they usually fail and cause these symptoms