Jam Protection Function Does Not Operate

2011 Lexus HS 250h L4-2.4L (2AZ-FXE) HybridSECTION Jam Protection Function Does Not Operate




WINDOW / GLASS: POWER WINDOW CONTROL SYSTEM: Jam Protection Function does not Operate
- Jam Protection Function does not Operate

DESCRIPTION

This symptom may occur for any of the windows.

The jam protection function operates within a specified range during the manual up or auto up operation.

INSPECTION PROCEDURE

NOTICE:
* The power window control system uses a LIN communication system. Inspect the communication function by following How to Proceed with Troubleshooting How To Proceed With Troubleshooting. Troubleshoot the power window control system after confirming that the communication system is functioning properly.
* When the power window regulator motor assembly is reinstalled or replaced, the power window control system must be initialized Initialization.
* 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:
(1) Close the power window by fully pulling up the multiplex network master switch assembly or power window regulator switch assembly and holding it at the auto up position.
(2) Open the power window by fully pushing down the multiplex network master switch assembly or power window regulator switch assembly.

PROCEDURE

1. PERFORM INITIALIZATION (APPLICABLE LOCATION)

(a) Initialize the power window regulator motor assembly (applicable location) Initialization.

NEXT -- Continue to next step.

2. CHECK POWER WINDOW CONTROL SYSTEM (AUTO UP/DOWN FUNCTION)

(a) Check if the power window auto up and down functions operate normally Operation Check.

OK:

Auto up and down functions are normal.

NG -- GO TO OTHER PROBLEM (Proceed to Problem Symptoms Table) Problem Symptoms Table
OK -- Continue to next step.

3. CHECK JAM PROTECTION FUNCTION OPERATING RANGE

(a) Check if the jam protection function operates normally for the applicable power window.

HINT
The jam protection function will not operate within 4 mm (0.157 in.) of the fully closed position.

OK:

Jam protection function operates normally.

Result:





E -- REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Rear RH Side) Removal

D -- REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Rear LH Side) Removal

C -- REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Front Passenger Side) Removal

B -- REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Side) Removal

A -- END (PROBLEM DUE TO INITIALIZATION FAILURE)
RENDER: 1.0x

NO RELATED

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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.