2008 Lexus GX 470FACTORY OEM SERVICE PROCEDURE

Problem Symptoms Table

POWER WINDOW CONTROL SYSTEM 

POWER WINDOW CONTROL SYSTEM - PROBLEM SYMPTOMS CHART

Symptom Suspected Area Refer to
AUTO UP/DOWN function does not operate at driver side 1 Power window regulator motor assembly LH (Driver side) POWER WINDOW REGULATOR MOTOR 
2. Wire harness -
3 Power window regulator master switch assembly DRIVER SIDE POWER WINDOW AUTO UP/DOWN FUNCTION DOES NOT OPERATE WITH POWER WINDOW MASTER SWITCH 
AUTO UP/DOWN function does not operate at passenger 1. Power window regulator motor assembly RH POWER WINDOW REGULATOR MOTOR 
2 Wire harness -
3 Power window regulator switch assembly RH FRONT PASSENGER SIDE POWER WINDOW AUTO UP/DOWN FUNCTION DOES NOT OPERATE WITH FRONT PASSENGER SIDE POWER WINDOW SWITCH 
AUTO UP/DOWN function does not operate at rear LH 1 Power window regulator motor assembly LH (Rear LH) POWER WINDOW REGULATOR MOTOR 
2 Wire harness -
3 Power window regulator switch assembly rear (Rear LH) REAR POWER WINDOW LH AUTO UP/DOWN FUNCTION DOES NOT OPERATE WITH REAR POWER WINDOW SWITCH LH 
AUTO UP/DOWN function does not operate at rear RH 1 Power window regulator motor assembly RH (Rear RH) POWER WINDOW REGULATOR MOTOR 
2 Wire harness -
3. Power window regulator switch assembly rear (Rear RH) REAR POWER WINDOW RH AUTO UP/DOWN FUNCTION DOES NOT OPERATE WITH REAR POWER WINDOW SWITCH RH 
Manual UP/DOWN function does not operate at driver 1 Power window regulator master switch assembly MANUAL UP/DOWN FUNCTION DOES NOT OPERATE ON DRIVER SIDE 
2 Power window regulator motor assembly LH (Driver side) POWER WINDOW REGULATOR MOTOR 
3 Wire harness -
Manual UP/DOWN function does not operate at passenger 1 Power window regulator switch assembly (Passenger side) MANUAL UP/DOWN FUNCTION DOES NOT OPERATE ON PASSENGER SIDE ONLY 
2 Power window regulator motor assembly RH POWER WINDOW REGULATOR MOTOR 
3 Wire harness -
Manual UP/DOWN function does not operate at rear LH 1. Power window regulator switch assembly rear (Rear LH) MANUAL UP/DOWN FUNCTION DOES NOT OPERATE ON REAR LH ONLY 
2 Power window regulator motor assembly LH (Rear LH) POWER WINDOW REGULATOR MOTOR 
3 Wire harness -
Manual UP/DOWN function does not operate at rear RH 1 Power window regulator switch assembly rear (Rear RH) MANUAL UP/DOWN FUNCTION DOES NOT OPERATE ON REAR RH ONLY 
2 Power window regulator motor assembly RH (Rear RH) POWER WINDOW REGULATOR MOTOR 
3 Wire harness -
Remote UP/DOWN function does not operate 1 Power window regulator master switch assembly REMOTE UP/DOWN FUNCTION DOES NOT OPERATE 
2 Power window regulator switch assembly (Passenger side) -
3 Power window regulator switch assembly rear (Rear LH) -
4 Power window regulator switch assembly rear (Rear RH) -
5 Wire harness -
6 Instrument panel J/B assy (Body ECU) -
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.

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