Ditto - if it comes on and acts normally when the car is turned on:
1. MAKE SURE YOU ARE SET TO TIME!! (Make sure you're not on auto timer, and it's setting to 0 seconds or something) Set it to like 5 minutes or something just for kicks
2. Same with me, squier15, I had a bad connection to my e-brake handle. As soon as I rechecked the splice, and connected it all up, I was good to go.