Diagnostic Aids
- Devices causing additional battery loads when the vehicle is off may reduce the state of charge and may disable the stop/start system. Refer to: Checking Aftermarket Accessories
- Short trips that prevent the battery to fully charge, and/or the fluids to reach full operating temperature and may disable the stop/start system.
- If a parasitic draw is present - Auto Stop/Start will be inoperative and the Battery Sensor learn cannot be performed.
- Refer to: Stop/Start Disable, Inhibit, and Restart Reasons