OK..... I've searched but cannot find any relevant topic. My HVAC recently adopted the habit of reseting on its own. It does this only when the car is off and I am away. The occurrence is random (sometimes it resets and other times it does not). Off course, I know this because my clock reset back to 12:00 and began to run again. When I'm back to my car, I will notice the time is at the hour and minute from its initial reset.

Anyone with this problem? I figured that my battery reset, but it cannot be. One of the tC's mechanisms is that it beeps when you're driving without your seat belt on. Well, I disable that mechanism. Whenever I refresh the battery connection, that mechanism is re-instituted. Since my tC does not beep when I drive w/o seat belt, my logic is that my battery connection was never refreshed. Any other idea? This is a nuisance since I rely on that clock all the time.

Thanks

 

Check the harness that plugs into the hvac for a loose connection and/or loose wires?

 

maybe a ground wire. Im not entirely sure i though. because if you even unplug the connector in the back it resets. so possibly loose connection. If you have a ledswap on the hvac idk if that would have anything to possibly do with it

 

thats what i was gonna say...but wouldnt really make any sense if it happens when you NOT driving...hmmmm.