Lincoln MKX Base 3.5L The passenger heated seat is inoperative, does not work

VEHICLE:  2008 Lincoln MKX Base 3.5L, V6, MFI, DOHC, VIN C

MILEAGE:  49,000

Customer Concern:

The passenger heated seat is inoperative. The light comes on in the control panel when pushing the switch but the seat doesn't heat up.

Tests:

1. If a scanner with the correct software is available, start with pulling codes on the Dual Climate Controlled Seat Module (DCSM). If any codes are present, address as needed.

2. If a scanner is not available, access the DCSM on the underside of the front of the passenger seat. At connector C3036A (Black 12 terminal connector) check the resistance between pin 1 Grey/Blue (GY/BU) wire and pin 2 Blue (BU) wire. This will check the resistance of the heating element in the Thermo-Electric Device (TED) for the seat. The resistance should be 0.9-10.0Ω. If the reading is abnormally high indicating the heating element is open, verify the resistance between pins 1 and 3 on the 8 terminal connector for the TED itself. If high at the TED 8 terminal connector, replace the TED for the seat cushion.

3. If the seat cushion element tests OK, check the backrest cushion. This is pin 3 Blue/Brown (BU/BN) wire and pin 4 White (WH) wire. The resistance should be 0.9-10.0Ω. If the reading is abnormally high indicating the heating element is open, verify the resistance between pins 1 and 3 on the 8 terminal connector for the backrest TED itself. If high at the TED 8 terminal connector, replace the TED for the backrest.


Potential Causes:

Thermo-Electric Device (TED)
Thermo-Electric Device (TED) Wiring
Thermo-Electric Device (TED) Connector


Confirmed Fix:

Replaced Thermo-Electric Device (TED): Replaced the TED in the seat cushion.



Tech Tips:

The climate controlled seats have items called Thermo-Electric Devices (TED) which contain the heating element, the temperature sensor, and the blower motor for the seats all in one unit.

2008 Lincoln MKX Base 3.5L, V6, MFI, DOHC, VIN C The passenger heated seat is inoperative. The light comes on in the control panel when pushing the switch but the seat doesn't heat up.