Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2008 Lexus LS 460LFACTORY OEM SERVICE PROCEDURE

Operation Check

CHECK FRONT POWER SEAT FUNCTION
1. Check the basic functions.
  1. Operate the power seat switches and check to make sure each seat function works:
    - Sliding
    - Front vertical
    - Lifter
    - Reclining
    - Lumbar support (up - down) (for Driver Seat)
    - Lumbar support (forward - back)
    - Cushion sliding (for Driver Seat)
    - Headrest
CHECK POWER SEAT MOTOR ASSEMBLY (SLIDING, FRONT VERTICAL, LIFTER, RECLINING, LUMBAR SUPPORT, CUSHION SLIDING AND HEADREST)
1. Check the PTC operation inside the power seat motor.
  HINT:
  
  The PTC thermistor's resistance increases when the power seat switch is held down even after the power seat has been moved to the maximum in one direction. If the resistance increases beyond a specified level, current is cut to prevent a short circuit.
  
  Fig 1: Checking Front Power Seat Function
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.