For the part number, I'd call your local dealer and give them the last 8 or 9 digits of your VIN. They should be able to give you the number for the correct part.
Is the LED indicator on the switch flashing only when the switch is in the high position or low position or both? If both LED's (high and low) are flashing, the heater element is shorted. If only the high LED indicator is flashing and the low indicator is off, the seat element is open. If the high indicator is off and the low indictor is flashing, only one heated seat element is open.
Here are testing procedures for the drivers side heated seat switch:
1. Remove the heated seat switch/modules, (Refer to
8 - ELECTRICAL/HEATED SEATS/SEAT SWITCH
- REMOVAL).
2. Connect the battery negative cable.
3. Turn the ignition to the “RUN” position.
4. Check for battery voltage on terminals 4 and 6 of
the switch/module connector of the inoperative
seat. Battery voltage should be present on both terminals.
If OK go to Step 5. If NOT OK repair the
open or shorted fused B(+) circuit as required.
5. Check for continuity between ground terminal 1 of
the switch/module connector of the inoperative seat
and a good ground. If OK go to Step 6. If NOT OK,
repair the open or shorted ground circuit as
required.
6. Check for continuity between the heated seat element
supply circuit terminal 3 of the switch/module
connector of the inoperative seat and the heated
seat element connector of the inoperative seat. If OK go to Step 7. If NOT OK, repair the open or shorted supply
circuit as required.
7. Perform the heated seat element diagnosis for the inoperative seat. (Refer to 8 - ELECTRICAL/HEATED SEATS/
HEATED SEAT ELEMENT - DIAGNOSIS AND TESTING) to check the suspect heated seat elements. If the elements
test OK, replace the inoperative heated seat switch/module, (Refer to 8 - ELECTRICAL/HEATED SEATS/
SEAT SWITCH - REMOVAL) for the appropriate procedure. If NOT OK, replace the inoperative heated seat
element, (Refer to 8 - ELECTRICAL/HEATED SEATS/HEATED SEAT ELEMENT - REMOVAL) for the appropriate procedure.
Here's the heated seat element testing instructions:
The wire harness connectors (2&3) for the heating
elements are located under the seat (1).
NOTE: When checking heated seat elements for
continuity, be certain to move the heating element
being checked. Moving the element, such as sitting
in the seat will eliminate the possibility of an
intermittent open in the element which would only
be evident if the element was in a certain position.
Failure to check the element in various positions
could result in an incomplete test.
1. Locate and disconnect the seat electrical connector.
2. Check the resistance between the circuit leading in
and out of the suspect heated seat element. The
resistance should be between 3.8 - 4.8 ohms for a
seat cushion element and 4.3 - 5.4 ohms for a seat
back element. If OK, (Refer to 8 - ELECTRICAL/
HEATED SEATS - DIAGNOSIS AND TESTING). If not OK, replace the inoperative heated seat element
Here's the heated seat element installation instructions:
REMOVAL
NOTE: Do not remove the factory installed heating
elements (3) from the seat or seat back cushions.
The original element is permanently attached and
cannot be removed without permanent damage.
The replacement heating element is designed to
be applied directly on top of the inoperative factory
installed heating element.
1. Disconnect and isolate the negative battery cable.
2. Remove the appropriate seat cushion, (Refer to 23
- BODY/SEATS/SEAT CUSHION COVERREMOVAL)
or seat back trim cover, (Refer to 23BODY/SEATS/SEAT
BACK CUSHION / COVERREMOVAL).
3. Disconnect the inoperative heated seat cushion or
seat back element electrical connectors (2).
4. Locate the wires leading from the inoperative heating
element and cut them off flush with the edge of
the original heating element.
INSTALLATION
1. Peel off the adhesive backing on the back of the
replacement heating element (2) and stick directly
on top of the factory installed heating element (1).
CAUTION: During the installation of the replacement
heating element, be careful not to fold or
crease the element assembly. Folds or creases will
cause premature failure.
2. Connect the new heating element electrical connectors
(3&4).
3. Connect the battery negative cable.
4. Verify heated seat system operation.
5. Install the appropriate seat cushion, (Refer to 23BODY/SEATS/SEAT
CUSHION COVER - INSTALLATION)
or seat back trim cover, (Refer to 23BODY/SEATS/SEAT
BACK CUSHION / COVERINSTALLATION).
NOTE: Make certain the seat wire harness is correctly
routed through the seat and seat back. The
excess wire between the cushion and back elements
should be securely tucked between the rear
of the cushion foam and the rear carpet flap of the
trim cover.
