Ok, so this afternoon I got in the car (64 degrees F.) and drove out shopping... on the way I hit the timer and there is was again... in fact I couldn't get back to the stopwatch feature at all. When I stopped I set it, but wasn't near the car when it was supposed to do whatever it does.... When I restarted the car the stopwatch was back and I couldn't get it to change back to the auto venting. I will figure this out... I will figure this out (oops, short term memory gone again). Am trying to figure out if you hit something when the car is off, then turn it on and hit the timer... I know directions have been posted, but none of them worked... but something I did did!