Interior - Front Seat Track Noise/Abnormal Operation
L-SB-0002-11January 11, 2011
Front Seat Track Abnormal Operation and/or Rattle
Service Category
Vehicle Interior
Section
Seat
Market
USA
Applicability
Introduction
Some 2010 model year North American Produced (NAP) RX 350 vehicles may exhibit a condition where the front seat track(s):
^ Feel loose when entering and/or exiting the vehicle.
^ Rattle when the seat is unoccupied.
An inspection and adjustment procedure has been developed to address this condition.
Production Change Information
This TSIB applies to vehicles produced BEFORE the Production Change Effective VINs shown.
Warranty Information
APPLICABLE WARRANTY
^ This repair is covered under the Lexus Comprehensive Warranty. This warranty is in effect for 48 months or 50,000 miles, whichever occurs first, from the vehicle's in-service date.
^ Warranty application is limited to occurrence of the specified condition described in this bulletin.
Parts Information
Required Tools & Equipment
Repair Procedure
1. While sitting in the seat confirm the condition by leaning against the seat back. If the seat feels slightly loose this TSIB may apply. If not follow the Repair Manual for additional diagnostics.
2. Remove the front and rear seat track covers.
3. Follow Repair Manual instructions to remove the affected seat assembly from the vehicle. Refer to the Technical Information System (TIS)
2010 RX 350 Repair Manual:
Vehicle Interior - Seat - "Seat Front Seat Assembly: Removal (to 08/2009) / (from 08/2009)"
4. Locate the two 12 mm front rail end cap nuts.
5. Using a 0.15 mm (0.006 in.) feeler gauge measure the gap between the end cap nut and helical gear.
^ If there is a gap of 0.15 mm (0.006 in.) or greater proceed to step 6.
^ If the gap is less than 0.15 mm (0.006 in.) follow the Repair Manual to continue diagnosis.
Refer to TIS, 2010 RX 350 Repair Manual:
^ Vehicle Interior - Seat - "Seat Front Seat Assembly: Inspection"
6. Install the seat assembly into the vehicle leaving the seat mounting bolts finger tight.
Refer to TIS, 2010 RX 350 Repair Manual:
Vehicle Interior - Seat - "Seat Front Seat Assembly Installation (to 08/2009) / (from 08/2009)"
7. Using the fore and aft adjuster slide the seat to the foremost position.
NOTICE
If the nuts are loosened in any position other than foremost, the drive screw can be rotated with the nut and misalignment between the outer/inner tracks may occur.
8. With a 12 mm socket on a 6 inch extension loosen the two end cap nuts. Do NOT remove the end cap nuts at this step.
9. Using the fore and aft adjuster slide the seat to the rearmost position and remove the two end cap nuts.
10. With a wire brush clean the stud threads.
11. Install the NEW end cap nuts (PIN 41315-48010) and torque the end cap nut. There should be 0 mm gap between the end cap nut and the top of the helical gear.
Torque: 3.0 N*m (30.6 kgf*cm, 27 in*lbf)
NOTICE
^ Do NOT over-tighten the end cap nut as it may damage the helical gear.
^ If the seat track position is NOT set at the rearmost position when the nuts are installed, the drive screw can rotate.
12. Torque the seat bolts and install the bolt covers following the Repair Manual.
Refer to TIS 2010 RX 350 Repair Manual:
^ Vehicle Interior - Seat - "Seat Front Seat Assembly Installation (to 08/2009) / (from 08/2009)"
13. Confirm the repair using the procedure in step 1. If excessive movement is present follow the Repair Manual for additional diagnostics.