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.

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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 990 (SEATS)FRONT POWER SEAT CONTROL SYSTEMON-VEHICLE INSPECTION

2004 Toyota Matrix XR, FWD, Standard

On-Vehicle Inspection

2004 Toyota Matrix XR, FWD, StandardSECTION On-Vehicle Inspection

WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.

CHECK POWER SEAT FUNCTION
1. Check the basic function.
  1. Check that each part can function properly (sliding, front vertical, lifter, reclining, lumbar support) by operating the power seat switch.
    
    Fig 1: Checking Function Of Each Part Of Power Seat
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CHECK POWER SEAT MOTOR ASSY (SLIDING)
1. Inspect the DTC operation inside the power seat motor.
  NOTE: Inspection should be performed with the seat installed to the vehicle.
  1. Move the seat to any of the maximum front, rear, upper and lower positions by operating the power seat switch, and keep the seat there for approximately 60 seconds.
  2. Operating the power seat switch to move the seat to the position furthermore, measure the time until the electrical current is shut down (motor operating sound will stop). (Inspection of current shut-down).
    Standard: Approximately 4 to 90 seconds
  3. Turn the power seat switch off after the inspection of current shut-down, and keep that condition for approximately 60 seconds.
  4. Operating the power seat switch to move the seat to the opposite position, check that the motor operates.
CHECK LUMBAR SUPPORT ADJUSTER ASSY LH
1. Inspect the DTC operation inside the power seat motor.
  NOTE: Inspection should be performed with the seat installed to the vehicle.
  1. Move the lumbar support to either the front or rear maximum position by operating the lumbar support switch, and keep it there for approximately 60 seconds.
  2. Operating the lumbar support switch to move the lumbar support to the position furthermore, measure the time until the electrical current is shut down (motor operating sound will stop). (Inspection of current shut-down).
    Standard: Approximately 4 to 90 seconds
  3. Turn the lumbar support switch off after the inspection of current shut-down, and keep that condition for approximately 60 seconds.
  4. Operating the lumbar support switch to move the lumbar support to the opposite position, check that the motor operates.

RENDER: 1.0x

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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.