It has happen three times now. the first two times were about 2 or 3 in the Am The first time it went off 3 times the second time just once and then again tonight just once about 20 minutes after I got home.

what could it be?

 

Check to see if there any animals such as a cat jumping on the car. Or possibly someone walking by and touching the car.

 

What's the battery voltage? If it's low, that can cause this to happen. I had a Saturn that did that.