Alarm going off.

[Jonmartin]

Just recently my car alarm has decided to sound at about the same time every night, about 10 to 10:30 pm. Obviously, unlocking the car stops it, so does cancelling the internal sensor. I’m fairly sure there is nothing in the car, if there is it is nocturnal, as it doesn’t do it during the day, when the car is sat on the drive. Anyone with any ideas would be welcome, as far as I can see, I’ll have to press the internal sensor switch every night to stop a reoccurrence. 

[yossarian247]

I had this with a car few years ago and it was caused by a large moth trapped in the car and only coming out and flapping around at a certain time each night. During daylight hours it was presumably hiding somewhere in the interior as I'd never spotted it whilst driving during the day. 

[sportse]

I've only had one false alarm go off, a similar thing.

There was a big bug flying around inside that set off the sensor!

[Jonmartin]

Didn’t do it last night. I didn’t disable the internal sensor. But I did unplug the Dashcam and closed the dashboard vents.