CAR Window regulator

Window lifters: common faults and their symptoms

  1. Worn gear of the lifting mechanism
    • The sound of operating lifter is heard, but the window won't go up
    • The window moves with jerks.
    • Unnatural noise is heard when the window lifter button is pressed.
  2. Mechanical damage of the cable
    • The window goes down easily, however lifting requires applying an effort.
    • Extraneous noise is heard when the window is opened or closed.
    • The glass moves with jerks.
  3. Wiring defects
    • None of the windows responds to pressing the lifter button.
    • The window does not react to the button on the driver's door, but opens with the button on the respective door.

How to repair or replace window lifters?

Repairing car window lifters is limited to replacing faulty components, for example, installation of new guides, cleaning oxidized contacts, or replacing the motor. Fault diagnostics and repair should be entrusted to specialists of a service station, since it is quite a labor-consuming process that requires special knowledge and skills.

If the fault is significant, it is recommended to replace the window lifter assembly. For vehicles of different models the process of replacing parts can have its specific features; in general replacement of a window lifter involves the following steps:

  1. Remove the door trim. Disconnect all wires from it.
  2. Unscrew the bolts that attach the window lifter to the door.
  3. Remove the window lifter mechanism (if the new component comes without a motor, reinstall the old motor).
  4. Install the new component, fix it with bolts. Do not forget to connect the motor to the wiring.
  5. Reinstall the door trim. Before doing so, connect wires to it.

For some models, the algorithm will be slightly different. If you do not have experience and relevant knowledge in replacing the component, it is better to contact a service station, as it is rather a complex process. Besides, errors in window lifter installation will inevitably result in its incorrect operation.

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