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.
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HOMESERVICE MANUALSLEXUS2010RX 450H 3.5 BREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTWINDOW MOTORS & REGULATORSPOWER WINDOW CONTROL (DIAGNOSTIC CODES & SYMPTOM TESTS)POWER WINDOW CONTROL SYSTEMDTC B2312: POWER WINDOW SWITCH MALFUNCTION (FROM 8/2009)INSPECTION PROCEDURE
2010 Lexus RX 450h 3.5 B
Inspection Procedure
2010 Lexus RX 450h 3.5 BSECTION Inspection Procedure
NOTE:
- If DTC B2312 is not output again after the DTC has been cleared, the DTC was output due to the switch being held.
- When the power window regulator motor assembly is reinstalled or replaced, the power window control system must be initialized.
- After a door glass or a door glass run has been replaced, the jam protection function may operate unexpectedly when the auto up function is used. In such cases, the auto up function can be reinitialized by repeating the following operations at least 5 times:
- Close the power window by fully pulling up the multiplex network master switch assembly, power window regulator switch assembly (for front passenger side) or power window regulator switch assembly and holding it at the auto up position.
- Open the power window by fully pushing down the switch.
RENDER: 1.0x
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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.