Replacing the left front window regulator of the car is usually triggered by the following fault signs. It is necessary to determine whether the parts 72211-T4N-H01 need to be replaced according to the specific performance:
1. Abnormal lifting function
Complete failure: After pressing the switch, there is no response. After troubleshooting the switch/motor failure, the internal gear of the regulator may be broken, the wire rope or the rail is stuck.
Intermittent fault: The window suddenly stops in the middle of the lifting and lowering, and requires repeated operation to move. It may be due to wear of the regulator components, which may be poor contact.
One-way fault: can only rise or fall, and may be damaged by the regulator mechanical structure (such as ratchet mechanism).
2. Abnormal noise and vibration
Metal friction/click: regulator track deformation, roller wear or poor gear engagement.
Crunch: Plastic components are aging or failing to lubricate, but if they are accompanied by lifting and hysteresis, the regulator assembly may need to be replaced.
3. Glass movement abnormally
Tilt/Shake: The window glass cannot be kept horizontal, and may be out of sync due to the lifting and lowering of the adjuster on both sides (such as the slack wire rope on one side).
Stop feeling: There is obvious resistance when the glass is lifted and lowered, which may be due to deformation of the guide rail or misalignment of the regulator bracket.
4. Physical damage
Visual inspection found that the regulator bracket was broken, the wire rope was rusted and broken, or the gear was missing.
5. Accompanied symptoms
The problem still exists after replacing the motor, or the switch/safety is normal but the circuit load is abnormal (maybe due to a short circuit inside the regulator).