CAR ALARM?

[jonah hart]

Hey guys
Does anyone have any idea why my car alarm keeps going off ? It's always middle of nite when I go to turn it off there's not a soul about an no cats .. I even sat in garden at 3.30 this morning for half an hour an it went off 3 times .. Could it be an electrial fault? Doesant happen during day .. Any advice please ? ( it's a ford focus) x

[dougielogan]

Now that the nights are getting colder it could be an indication your car battery is on the way out, if your alarm senses a voltage drop it will go off.

[jonah hart]

Thanks dougie that makes sense I'll get it checked out .. Thanks alot :)

[wilkesneil]

it could be a faulty sensor as i had this problem on a 3 series a few years back. only went off at night, turned out the bonnet sensor was faulty.

[jonah hart]

Thanks .. I've not locked it with the fob just with the key so I'm hoping the alarms not on .. I can't take all the evils my neighbours are giving me lol :)

[bobjugs12]

Do car alarms still run on air pressure sensors?
If so, it could be the temperature affecting air pressure in your car