A few days ago the lights on my rear view mirror stopped shutting off. I think I hit a bump to hard. The only way I can shut them off is if I put the switch right in the middle of the off/on position (very hard to do). Also It seams like after a while the car will shut them off for me after I shut off the engine. I've started the car in the morning sometimes and the light will come on till I play with the switches again. So, do I need a whole new rear view mirror or can this be fixed?