My car alarm went off a couple times today and stopped when I started the car, moved it to the shade and then set the alarm again. I''ve had the car for a couple of years and never had this issue before. Do I change the batteries in the key fob, or do I have to change the circuit board somewhere under the hood? I did not see a video on how to do that.......would appreciate some advice on the level of Crossfire Fixes for Dummies

Thanks, guys (and gals)

Dianne aka hotwheels