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.
2006 Lexus LS 430FACTORY OEM SERVICE PROCEDURE
Window Defogger System: Inspection
- INSPECT OUTER REAR VIEW MIRROR ASSY LH
- Apply battery voltage and check operation of the mirror heater.
OK:
OUTER REAR VIEW MIRROR ASSY LH - REFERENCE TABLEMeasurement Condition Specified Condition Battery positive (+) -> Terminal R39-4 (HTR+) Mirror becomes warm Battery negative (-) -> Terminal R39-12 (HTR-) If the result is not as specified, replace the mirror assy.
- INSPECT OUTER REAR VIEW MIRROR ASSY RH
- Apply battery voltage and check operation of the mirror heater.
OK:
OUTER REAR VIEW MIRROR ASSY RH - REFERENCE TABLEMeasurement Condition Specified Condition Battery positive (+) -> Terminal R40-4 (HTR+) Mirror becomes warm Battery negative (-) -> Terminal R40-12 (HTR-) If the result is not as specified, replace the mirror assy.
- INSPECT BACK WINDOW (DEFOGGER WIRE) NOTE:
- When cleaning the glass, wipe the glass along the wire using a soft and dry cloth. Take care not to damage the wires.
- Do not use detergents or glass cleaners that have abrasive ingredients.
- When measuring voltage, wrap a piece of tin foil around the tip of the negative tester probe and press the foil against the wire with your finger, as shown in Fig 3 .
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.