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 LX 570FACTORY OEM SERVICE PROCEDURE
Problem Symptoms Table
HINT:
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Power Window Control System
POWER WINDOW CONTROL SYSTEM REFERENCESymptom Suspected Area See Procedure Remote up/down function does not operate LIN communication system REMOTE UP / DOWN FUNCTION DOES NOT OPERATE Multiplex network master switch - Driver side power window does not operate with multiplex network master switch LIN communication system DRIVER SIDE POWER WINDOW DOES NOT OPERATE WITH POWER WINDOW MASTER SWITCH Power window regulator switch - Front power window regulator motor RH - Harness or connector - Front passenger side power window does not operate with power window regulator switch LIN communication system FRONT PASSENGER SIDE POWER WINDOW DOES NOT OPERATE WITH FRONT PASSENGER SIDE POWER WINDOW SWITCH Power window regulator switch - Front power window regulator motor RH - Harness or connector - Rear power window LH does not operate with power window regulator switch LIN communication system REAR POWER WINDOW LH DOES NOT OPERATE WITH REAR POWER WINDOW SWITCH LH Rear power window regulator switch LH - Rear power window regulator motor LH - Harness or connector - Rear power window RH does not operate with power window regulator switch LIN communication system REAR POWER WINDOW RH DOES NOT OPERATE WITH REAR POWER WINDOW SWITCH RH Rear power window regulator switch RH - Rear power window regulator motor RH - Harness or connector - Driver side power window auto up/down function does not operate LIN communication system DRIVER SIDE POWER WINDOW AUTO UP / DOWN FUNCTION DOES NOT OPERATE WITH POWER WINDOW MASTER SWITCH Multiplex network master switch - Front power window regulator motor LH - Harness or connector - Front passenger side power window auto up/down function does not operate LIN communication system FRONT PASSENGER SIDE POWER WINDOW AUTO UP / DOWN FUNCTION DOES NOT OPERATE WITH FRONT PASSENGER SIDE POWER WINDOW SWITCH Power window regulator switch - Front power window regulator motor RH - Harness or connector - Rear power window LH auto up/down function does not operate LIN communication system REAR POWER WINDOW LH AUTO UP / DOWN FUNCTION DOES NOT OPERATE WITH REAR POWER WINDOW SWITCH LH Rear power window regulator switch LH - Rear power window regulator motor LH - Harness or connector - Rear power window RH auto up/down function does not operate LIN communication system REAR POWER WINDOW RH AUTO UP / DOWN FUNCTION DOES NOT OPERATE WITH REAR POWER WINDOW SWITCH RH Rear power window regulator switch RH - Rear power window regulator motor RH - Harness or connector - All power windows do not operate with driver side door key cylinder or wireless transmitter Wireless door lock control system ALL POWER WINDOWS DO NOT OPERATE WITH DRIVER SIDE DOOR KEY CYLINDER OR WIRELESS TRANSMITTER Power door lock control system - Main body ECU - Key-off operation function operates even if operating conditions are not satisfied LIN communication system KEY-OFF OPERATION FUNCTION OPERATES EVEN IF OPERATING CONDITIONS ARE NOT SATISFIED Front door courtesy light switch - Main body ECU - Auto up operation does not fully close power window (jam protection is activated) Glass position initialization AUTO UP OPERATION DOES NOT FULLY CLOSE POWER WINDOW (JAM PROTECTION FUNCTION IS ACTIVATED) Improper installation (door glass run) - Power window regulator motor (applicable location) - Jam protection function does not operate Glass position initialization JAM PROTECTION FUNCTION DOES NOT OPERATE Power window regulator motor (applicable location) - All power window up functions do not operate with entry lock switch Entry lock switch ALL POWER WINDOW UP FUNCTIONS DO NOT OPERATE WITH ENTRY LOCK SWITCH Main body ECU - Auto down operation does not fully open power window Glass position initialization AUTO UP OPERATION DOES NOT FULLY CLOSE POWER WINDOW (JAM PROTECTION FUNCTION IS ACTIVATED) Improper installation (door glass run) - Power window regulator motor (applicable location) -
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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