Switch, Heated Seat: Operation

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

Front Heated Seats:

When either of the hard or soft front heated seat switches are pressed with the engine running, a signal is sent to the Comfort Seat and Wheel Module (CSWM) over the Controller Area Network (CAN) IHS data bus, signaling the module to energize the heating elements for the selected seat. Indicator lamps illuminate for each heated seat switch and indicate the level of heat in use (HI or LO). Pressing a heated seat switch once will select high-level heating and pressing the same switch a second time will select low-level heating. Pressing the switch a third time will shut the heating elements off.

The CSWM energizes the integral solid-state relays that supply Pulse Width Modulated (PWM) current to the heating elements. During high-temperature level operation, the HI indicator illuminates on the Radio. After 50 minutes of high-temperature level heating, the CSWM automatically lowers the heat level to low. At that time, the LO indicator illuminates on the Radio. Operation on the low-temperature level setting will automatically turn off after 45 minutes.

The individual front heated seat switches located in the Radio module cannot be adjusted or repaired. If a front heated seat switch or indicator is inoperative or damaged, the entire Radio must be replaced. Refer to RADIO, REMOVAL .

Rear Heated Seats:

When either of the hard rear heated seat switches are pressed with the engine running, a signal is sent to the Comfort Seat and Wheel Module (CSWM) over the Controller Area Network (CAN) IHS data bus, signaling the module to energize the heating elements for the selected seat. Indicator lamps illuminate for each heated seat switch and indicate the level of heat in use (HI or LO). Pressing a heated seat switch once will select high-level heating and pressing the same switch a second time will select low-level heating. Pressing the switch a third time will shut the heating elements off.

The CSWM energizes the integral solid-state relays that supply Pulse Width Modulated (PWM) current to the heating elements. During high-temperature level operation, the HI indicator illuminates on the switch. After 50 minutes of high-temperature level heating, the CSWM automatically lowers the heat level to low. At that time, the LO indicator illuminates on the switch. Operation on the low-temperature level setting will automatically turn off after 45 minutes.