Canada - Interior - Seat Heater Inoperative
BulletinTSB2852
Issue Date
September 23, 2010
Title
SEAT HEATER INOPERATIVE AFTER 10 MINUTES
Component
BODY ELECTRICAL
Models
'07-'08 LS460; '08 LS600h
INTRODUCTION:
Some 2007 - 2008 model year LS460/460L and LS600hL vehicles with climate controlled seats may exhibit a condition where the seat heater is inoperative after 5 - 10 minutes of use. The seat climate controller has been improved to correct this condition.
APPLICABILITY:
PRODUCTION CHANGE INFORMATION:
This TSB applies to vehicles produced BEFORE the Production Change Effective VIN shown.
WARRANTY INFORMATION:
PARTS INFORMATION:
REQUIRED TOOLS & EQUIPMENT:
REPAIR PROCEDURE:
1. Remove the seat assembly. Refer to the Repair Manual within E-TAS / TIS library:
- Division: Lexus
- Model: LS460
- Year: 2007/ 2008
- Service Category: Vehicle Interior
- Section: Seat
- Keyword: Seat: Front Seat Assembly: Removal
- Division: Lexus
- Model: LS600h
- Year: 2008
- Service Category: Vehicle Interior
- Section: Seat
- Keyword: Seat: Front Seat Assembly: Removal
CAUTION
Wear protective gloves. Sharp areas on the seat adjuster and seat cushion frame may injure your hands.
NOTICE
If the occupant classification ECU has been dropped, or there are any cracks, dents or other defects in the case or connector, replace it with a new one.
HINT
Use the same procedures for the LH side and RH side. The procedure listed below is for the LH side.
2. Remove the seat cushion climate controller.
A. Remove the three bolts holding the climate controller.
B. Remove the tie straps holding the controller to the ducting.
3. Install the NEW seat cushion climate controller in the reverse order of removal.
4. Remove the seat back climate controller.
A. Remove the 2 screws holding the seat back in place, then remove the seat back cover.
B. Remove the wire connector and the clip attaching the harness to the seat back.
C. Remove the bolts holding the seat back climate controller in place.
D. Disconnect the wire harness connector.
E. Pull the ducting in the direction of the arrow in Figure 3 to remove the seat back climate controller.
5. Install the NEW seat back climate controller in reverse order of removal.
NOTE
When installing the new seat back climate controller, use Loctite(R) Threadlocker Blue 242 or equivalent to secure the screws.
6. Reinstall the seat assembly. Refer to the Repair Manual within E-TAS / TIS library:
- Division: Lexus
- Model: LS460
- Year: 2007/ 2008
- Service Category: Vehicle Interior
- Section: Seat
- Keyword: Seat: Front Seat Assembly: Installation
- Division: Lexus
- Model: LS600h
- Year: 2008
- Service Category: Vehicle Interior
- Section: Seat
- Keyword: Seat: Front Seat Assembly: Installation
7. Verify proper operation of seat heater.
NOTE:
Issue of this Technical Service Bulletin is to ensure that proper repair information is available. IT DOES NOT CONSTITUTE AN AUTHORIZATION FOR REPAIR. Normal provisions of the formal warranty policy, as applicable, will apply.