Front Door Window Regulator: Service and Repair

Subframe

Removing

• The removal and installation procedure describes the left subframe. The procedure is the same for the right subframe.

The window regulator and speaker are secured to the subframe.

The subframe can be removed only if the door window is detached at the clamping screws on the window regulator.

If it is not possible to drive down the door window by the electrical window regulator, first the exact cause of malfunction must be determined.

Check the comfort system DTC memory with the Vehicle Diagnosis, Testing and Information System (VAS 5052 A). Refer to Vehicle diagnostic tester.

If electrical malfunction is present, repair this malfunction first.

If there is an electrical malfunction due to window regulator motor, it can be unscrewed from subframe and door window can be slid by hand into the necessary work position.

• The subframe has a crash sensor. Be sure to follow all the safety precautions when working with pyrotechnic components.






- Remove the door trim..

- Release the latching mechanism of the protective sleeve - 4 - on the B-pillar - arrow a - and remove the protective sleeve.

- Open the locking mechanism of the B-pillar harness connector - 5 - by tilting down - arrow b - and disconnect the harness connector - 6 -.

- Disconnect the harness connectors - 8 - and slide into the door.

- Loosen the bolts - 3 - but do not remove them.

- Slide up door window - 1 -.






- Adhere the door window - 6 -.

- Remove the bolt - 5 -.

- Remove the bolts - 7 -.

- Remove the bolts - 2 -.






- Move the subframe - 1 - slightly upward - arrow a -.

- Pull the subframe - 1 - down at an angle - arrow b - out of the door.

- Guide the line - 2 - and release cable - 4 - into the door.

- Disconnect the harness connectors - 2 - from the door lock - 3 -.

Installation






- Connect the harness connectors - 2 - to the door lock - 3 -.

- Slide the subframe - 1 - upward at an angle - arrow a - into the door.

- Guide the line - 2 - and release cable - 4 - into the door.

- Slide the subframe - 1 - into the installation position - arrow b -.






- Tighten the bolt - 5 -, tightening specification: 2 Nm.

- Tighten the bolts - 7 -, tightening specification: 8 Nm.

- Tighten the bolts - 2 -, tightening specification: 8 Nm.

- Continue by performing the steps used in removal in reverse order.

• A function test must be performed before door trim is installed.