Battery Rundown Protection

Battery Rundown Protection helps prevent the battery from deep discharge when you have inadvertently left the interior/courtesy lighting on (glove box door open, door ajar, map light on, etc.). Battery Rundown Protection performs this function by turning off the inadvertent power output. This provides a battery voltage for the interior/courtesy lighting.

Once the ignition switch is turned off, a time-out period begins. When the time-out expires, the inadvertent output is turned off. The length of time before the timer expires depends on the accumulative vehicle mileage. If the mileage is under 24 km (5 mi), the vehicle is assumed to be in the plant or the dealership lot, and the time out period of 3 minutes is used. If the accumulative mileage is greater than 24 km (15 mi), the vehicle is assumed to be in the hands of the customer, and time out period of 20 minutes is used.

While the inadvertent power output is off, the inadvertent feed back is monitored. If a high to low transition occurs, or if a hardware/software wake up occurs, the inadvertent output is turned back on and the timer is restarted.