When the heated seat switch is pressed to the LOW position, the heated seat temperature sets to low. After you press the heated seat switch to the middle OFF position, the heat seat module stops applying battery positive voltage (B+) to the heating elements. The module also turns off the heated seats whenever the ignition switch is in the OFF position.

In the low position, the seat heats to approximately 37C (98.6 F). In the high position, the seat heat to approximately 44C (111.2F).

The temperature sensor in the seat cushion is a variable resistor called a thermistor. The thermistor regulates to temperature of the seat. The resistance of the sensor varies as the temperature of the seat cushion changes. The heated seat control module monitors the sensor resistance at the sensor input circuit. The heated seat control module opens the contacts in order to remove battery positive voltage (B+) from the heating elements under the following conditions:

The heated seat control module also opens the contacts in order to remove battery positive voltage (B+) from the heating elements under the following conditions:

The heated seat control module cycles on and off in order to maintain the desired temperature. The system active until one of the following conditions occurs:

The load management feature controls the amount of power consumed in the vehicle under heavy power load demands. If the vehicle demands high power for over 2 minutes, the body control module (BCM) cycles the power output to the heated seat at approximately 50% of normal capacity. The load management feature occurs under the following conditions:

Due to the load management function, customers may complain that the heated seats do not warm up quickly or warm at a lower temperature than normal. Deactivate one the above systems in order to deactivate the load management function.