Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: Auto Down Operation does not Fully Open Power Window (Catch Protection Function is Activated)

Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual / Vehicle Exterior / Window / Glass / Power Window Control System / Auto Down Operation does not Fully Open Power Window (Catch Protection Function is Activated)

DESCRIPTION

If a door glass does not slide smoothly or a power window regulator motor assembly or door window regulator sub-assembly does not operate smoothly, the catch protection function may be triggered automatically, resulting in the auto down operation being unable to fully open the power window.

CAUTION / NOTICE / HINT

NOTICE:

  • If a power window regulator motor assembly has been replaced with a new one, initialize the power window control system.

    Click here

  • If a power window regulator motor assembly and door window regulator sub-assembly have been removed and installed, or if a power window regulator motor assembly was reused when a door glass or door glass run was replaced, initialize the power window control system.

HINT:

This symptom may occur for any of the power windows.

PROCEDURE

1.

PERFORM INITIALIZATION (APPLICABLE LOCATION)

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

Click here

NEXT

2.

CHECK POWER WINDOW CONTROL SYSTEM (AUTO UP / DOWN FUNCTION (APPLICABLE LOCATION))

(a) Check that each power window moves when the auto up and down functions of the multiplex network master switch assembly or power window regulator switch assembly or rear power window regulator switch assembly is operated.

Click here

OK:

Auto up and down functions are normal (applicable location).

OK

END (PROBLEM DUE TO INITIALIZATION FAILURE)
NG

3.

CHECK DOOR GLASS SLIDING MOVEMENT (APPLICABLE LOCATION)

(a) Remove the power window regulator motor assembly and door window regulator sub-assembly.

(b) Install the door glass to the door glass run.

(c) Check that the power window regulator motor assembly and door window regulator sub-assembly operate smoothly.

(d) Check that the door glass slides smoothly when sliding it down by hand.

NOTICE:

Make sure to perform initialization again.

HINT:

Ensure the following:
  • The door glass fits in the door glass run without improper contact or deformation.
  • Foreign matter is not caught in the door glass run.
  • The door glass run is not misaligned.
  • The door glass is not tilted and does not catch on the door glass run.

OK:

Door glass slides smoothly.

Result

Proceed to

OK (Driver door power window)

A

OK (Front passenger door power window)

OK (Rear LH door power window)

B

OK (Rear RH door power window)

NG

C
A

REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (FOR DRIVER DOOR OR FRONT PASSENGER DOOR)

B

REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (FOR REAR LH DOOR OR REAR RH DOOR)

C

FIT DOOR GLASS CORRECTLY (REMOVE FOREIGN MATTER CAUSING IMPROPER FIT OR REPLACE PARTS)
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    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

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