Lexus NX: Auto Down Operation does not Fully Open Power Window (Catch Protection Function is Activated)
DESCRIPTION
If a door glass or a power window regulator motor 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 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.
- 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 windows.
PROCEDURE
| 1. | PERFORM INITIALIZATION (APPLICABLE LOCATION) |
(a) Initialize the power window regulator motor assembly (applicable location).
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| 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 function of the multiplex network master switch assembly, power window regulator switch assembly or rear power window regulator switch assembly (for rear LH or RH door) is operated.
Click here
OK:
Auto up and down function is normal (applicable location).
| OK | .gif) | END (PROBLEM DUE TO INITIALIZATION FAILURE) |
|
| 3. | CHECK WINDOW GLASS SLIDING MOVEMENT (APPLICABLE LOCATION) |
(a) Remove the door window regulator.
-
for Front Door:
Click here
-
for Rear Door:
Click here
(b) Install the window glass to the door glass run.
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for Front Door:
Click here
-
for Rear Door:
Click here
(c) Check if the door window regulator operates smoothly.
(d) Check that the window glass slides smoothly when sliding it up by hand.
CAUTION:
Perform initialization again.
HINT:
Ensure the following:- The window glass fits with the glass run without improper contact or deformation.
- Foreign matter is not caught in the glass run.
- The glass run is not misaligned.
- The belt moulding or inner weatherstrip is not caught.
- The glass is not tilted and does not catch.
OK:
Door window glass slides smoothly.
| Result | Proceed to |
|---|---|
| OK (Driver door power window) | A |
| OK (Front passenger door power window) | B |
| OK (Rear LH door power window) | C |
| OK (Rear RH door power window) | D |
| NG | E |
| A | | REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH |
| B | | REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH |
| C | | REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH |
| D | | REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH |
| E | | FIT WINDOW GLASS CORRECTLY (REMOVE FOREIGN MATTER CAUSING IMPROPER FIT OR REPLACE PARTS) |
READ NEXT:
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. CAUTION / NOTICE / HINT NOTICE:
I
Power Window Master Switch
ComponentsCOMPONENTS ILLUSTRATION *1 MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY *2 POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY WITH FRONT DOOR ARMREST BASE PANEL *3 FRONT DOOR ARMREST
SEE MORE:
Components
COMPONENTS ILLUSTRATION *1 DECK FLOOR BOX LH *2 REAR DECK FLOOR BOX *3 NO. 3 DECK BOARD SUB-ASSEMBLY *4 NEGATIVE AUXILIARY BATTERY TERMINAL N*m (kgf*cm, ft.*lbf): Specified torque - - ILLUSTRATION *1 LOWER STEERING COLUMN COVER *2 TILT AND TELESCOPIC SWITC
Disassembly
DISASSEMBLY CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH and LH sides.
The following procedure is for the LH side.
PROCEDURE 1. REMOVE FRONT DISC BRAKE PISTON (a) Place a piece of cloth between the front disc brake pistons and the disc brake cylinder assembly LH.
