Heated Seat Switch - Description

DESCRIPTION





The heated seat switches are located in the center stack (1) of the instrument panel. The switches are located on the outer edges of the accessory switch bank (2). If either of the switches is damaged or inoperative the complete accessory switch bank assembly must be replaced.

When either of the heated seat switches are depressed a switch status message is sent to the Cab Compartment Node (CCN) or instrument cluster via the Local Interface Network (LIN) data bus. The CCN then sends a message via the LIN data bus to the heated seat module, signaling the module to energize the heating element for the selected seat. Amber Light Emitting Diodes (LEDs) in the top portion of each switch indicate the level of heat in use: Two LEDs are illuminated for high, one for low, and none for off. The heated seat module sends the LED illumination message to the CNN via the LIN data bus. The CNN then sends the LED illumination message to the accessory switch bank so that the appropriate LEDs are illuminated for any given heating level. Pressing the switch once will select high-level heating. Pressing the switch a second time will select low-level heating. Pressing the switch a third time will shut the heating elements off.

The LED indicator lamps in each heated seat switch cannot be repaired. If the LED lamps are inoperative or damaged, or the switch is inoperative or damaged the complete accessory switch bank assembly must be replaced. For Service information Instrument Cluster Switch Pod - Removal orInstrument Cluster Switch Pod - Installation.