So this morning I noticed my dash clock is 20 minutes so behind. Live in Midwest, nice weather weekend. 2007 Mazda3. Purchase 30 moths ago with 119K, now has 130K. So you can see it doesn't get driven much. Haven't noticed any other changes. Don't know the status of the battery, same one that came with the car in October 2014. Only thing is I have purchased and have been riding a moped for many I reset it today and will watch. What if if does lose time again, where would I start to look?