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.
2007 Lexus GS 430FACTORY OEM SERVICE PROCEDURE
Inspection Procedure
- CHECK MANUAL UP/DOWN FUNCTION (DRIVER SIDE)
- Check that the manual UP/DOWN functions operate normally.
OK:
Manual UP/DOWN functions operate normally.
NG: OTHER PROBLEM
OK: Go to next step
- Check that the manual UP/DOWN functions operate normally.
- CHECK LIGHT OF MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY (AUTO LIGHT)
- Turn the engine switch on (IG).
- Operate the master switch assembly's driver side switch for 2 seconds or more.
- Check the blinking pattern of the AUTO light. Compare the blinking pattern with the illustration below.
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.