2011 Lexus GS 450hFACTORY OEM SERVICE PROCEDURE

Diagnostic Trouble Code Table

POWER WINDOW CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE TABLE

DTC Code Detection Item Trouble Area Reference
B2311 Power Window Motor Malfunction Battery disconnected when power switch on (IG)
Power window regulator motor assembly (applicable location)
Incorrect installation of power window components
Overheated power window regulator motor assembly (applicable location)		 Refer to DTC B2311: Power Window Motor Malfunction
B2312 Power Window Switch Malfunction Power window regulator motor assembly (applicable location)
Power window master switch held in same position for more than 20 seconds
Power window switch held in same position for more than 20 seconds (applicable location)
Wire harness or connector		 Refer to DTC B2312: Power Window Switch Malfunction
B2313 Glass Position Initialization Incomplete Power window regulator motor not initialized
Power window regulator motor assembly (applicable location)		 Refer to DTC B2313: Glass Position Initialization Incomplete
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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.