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 GS 460FACTORY OEM SERVICE PROCEDURE

Inspection Procedure

PERFORM INITIALIZATION (APPLICABLE LOCATION)
1. Turn the engine switch on (IG) and initialize the power window regulator motor (See CUSTOMIZE PARAMETERS ).

CHECK DTC OUTPUT

Turn the engine switch off.
Wait for at least 10 seconds, and then turn the engine switch on (IG).

Check for DTCs.

Result

RESULT CHART

Result	Proceed to
DTC Is not output	A
DTC output from front LH motor	B
DTC output from front RH motor	C
DTC output from rear LH motor	D
DTC output from rear RH motor	E

B : REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH (See REMOVAL )

C : REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH (See REMOVAL )

D : REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH (See REMOVAL )

E : REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH (See REMOVAL )

A : END (POWER WINDOW CONTROL SYSTEM HAS NOT BEEN INITIALIZED)

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.