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.
2010 Lexus IS 350CFACTORY OEM SERVICE PROCEDURE
Key-off Operation Function Operates even if Operating Conditions are not Satisfied: Description
- When the front doors are closed, front power window regulator motor assemblies can control its power window operation for approximately 45 seconds after the engine switch is turned from on (IG) to off by receiving operation permission signals from the main body ECU RH (cowl side junction block RH).
- However, when approximately 45 seconds have elapsed, or the driver door or front passenger door is opened within approximately 45 seconds of the engine switch being turned off, the front power window regulator motor assemblies stops operating.
- During an auto operation, when 45 seconds have passed and key-off operation is prohibited, the window operation stops immediately.
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.