my car sat for 3 weeks. When I finally drove it ,I went several miles with lights and ac on. Parked and turned on the radio for an hour. When I started the car, the flat tire monitor and
DSC lights were on. Turned out it was the computer telling me that these systems were receiving low
voltage and would not function properly. A good run up the road to recharge the battery was needed, then re-set the system, all is well.