No.7 ABNORMAL NOISE WHILE THE DOOR GLASS IS OPENING OR CLOSING [POWER WINDOW SYSTEMS (WITHOUT EXTERIOR OPEN/CLOSE FUNCTION)]

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7 | Abnormal noise while the door glass is opening or closing
POSSIBLE CAUSE | • Installation screw is loose between the door glass and carrier plate. • Deformity in the power window regulator plastic part due to use. ― Scratching, wear marks to the power window regulator resin part due to twisting of the cable. ― Gear deformity in the power window motor. Note • Identify the location of the noise using a stethoscope or similar device.

Diagnostic procedure

Noise type | Time of occurrence | Possible cause | Location of noise | Action
--- | --- | --- | --- | ---
Clanking noise | Door glass begins to move | Insufficiently tightened installation screw between the door glass and carrier plate. | Between door glass lower edge and carrier plate. | Securely tighten the installation screw.
Groaning noise (Sound increases due to use) | While door glass is operating | Vibration caused by wear on the resin part from cable twisting due to use of the power window regulator. Note • Noise does not occur if a roller is equipped to power window regulator resin part. | Power window regulator | Replace the power window regulator (See FRONT POWER WINDOW REGULATOR REMOVAL/INSTALLATION.) (See REAR POWER WINDOW REGULATOR REMOVAL/INSTALLATION.)
Whining noise | Gear inside power window motor is deformed due to use. | Gear in power window motor | Replace the power window motor (See POWER WINDOW MOTOR REMOVAL/INSTALLATION.)
Clicking noise (Periodic noise)

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