I had the same question. I've previously had cars where the light comes on when no one is in the seat. But after checking with the dealership this is how the Compass Passenger Airbag works:does anyone elses airbag light come on? here and there it will pop on for a few mins then turn itself off..its hard to ask a dealership, cuz if nothing is there they can't check it! I don't know if the sensor is messed up or sticks or something?