My drivers side heated seat doesn't appear to be working properly. When I hit the switch, the lights turn on, but it goes off a minute later. If I hit it again, the lights only stay on for a few seconds then it shuts off. The passenger seat works fine. All of the connectors under the seat look fully seated (no pun intended). Anyone else have a problem like this? It's under warranty but if it's something simple that could save me a trip to the dealer, that would be better.