Front Door Window Regulator: Service and Repair
WM 573019 Removing and installing front door sub-frame
Preliminary work
1. Remove door handle => Removing door handle.
2. Remove front door trim => Removing and installing front door trim.
3. Remove rear-view mirror => Removing and installing rear-view mirror.
Technical values
Tightening torques
Test and adjustment values
Information
- The figures showing the gap dimensions can be found in the section entitled => Diagram of gap dimensions.
Removing front door sub-frame
Information
- Close the door window in order to improve accessibility to the door wiring harness when removing the front door unit carrier.
1. Removing rear assembly opening covers, loosening lock mounting and KESSY wiring harness - For all vehicles:
1.1. Unclip the top and bottom assembly opening covers -1- and -2-.
1.2. Unscrew fastening screws -3- on door lock.
2. Also for vehicles with KESSY control module:
2.1. Release -Arrow A- and remove -Arrow B- electric connector.
2.2. Press out rubber sleeve -C- and slide cable outwards through the opening.
3. Removing front assembly opening covers and disconnecting electrical connection
3.1. Unclip the top and bottom assembly opening covers -4- and -5-.
3.2. Pull off rubber sleeve -7- between the door and A-pillar.
3.3. Release and disconnect electric push-on connectors -6-.
4. Releasing door sub-frame
4.1. Unscrew fastening screws for door sub-frame -8, 9- and -11-.
4.2. Press rubber sleeve on the wiring harness -10- inwards and remove wiring harness -10- through the door opening and the door sub-frame.
5. Removing door sub-frame
5.1. Raise the door sub-frame -12- evenly at the front and rear until the guide pins -13- and -16- are fully released from the holding slots -14- and -15-.
5.2. Remove the door sub-frame from the basic door frame -17-.
Installing front door sub-frame
1. Moving adjustable fastening elements to their home position
1.1. Move the three adjustable fastening elements ( -Arrow A, B, C- ) on the door sub-frame to their home position. Screw the screw element -19- fully into the basic element -18-.
Information
The screw elements have left-handed threads.
2. Opening basic door frame
3. Engaging door sub-frame on basic door frame
3.1. Mount the door sub-frame -12- on the basic door frame -17-.
3.2. Insert guide pins -13- and -16- into the holding slots -14- and -15-.
4. Fixing door sub-frame to basic door frame, linking up electrical plug connection and tightening lock
4.1. Fix the door sub-frame to the basic door frame by screwing in the fastening screws -9, 11-. Press the door sub-frame upwards and screw in fastening screws slightly.
4.2. Push wiring harness -10- from inside through the door sub-frame and the door opening and press rubber sleeve on the wiring harness -10- from inside into the door opening.
4.3. Connect electric push-on connector -6-.
4.4. Press on the rubber sleeve -7- between the doors and A-pillar.
4.5. Screw in new fastening screws -3- on the door lock and tighten to the specified tightening torque => Tightening torques.
5. Adjusting door sub-frame
5.1. The fastening screw -11- secures the front bearing position (holding slot -15- for guide pin -16- ). This bearing point cannot then be adjusted.
5.2. Close the door carefully.
Information
The setting is achieved by bracing the door unit carrier with the basic door frame using the adjustable fastening elements. If the required joint measurements cannot be achieved, it may be necessary to unscrew the fastening screws -9,11- and reset the adjustable fastening elements to the basic position.
5.3. The window frame (door sub-frame) must be adjusted with respect to the roof frame and B-pillar ( -arrow D- ). The pivoting points in this case are the holding slots -14- , -15- and the guide pins -13- , -16-. Adjust the gap dimensions on the door sub-frame.
5.4. => Test and adjustment values
5.5. Tighten fastening screws -9, 11- to the specified tightening torque. => Tightening torques
6. Fastening door sub-frame
6.1. Screw in fastening screws -8- and tighten to the specified tightening torque.
=> Tightening torques
7. Clipping in covers of front assembly openings
7.1. Clip in the top and bottom assembly opening covers -4- and -5-.
8. Clipping in rear assembly opening covers and connecting KESSY wiring harness - For all vehicles:
8.1. Clip in the top and bottom assembly opening covers -1- and -2-.
9. Also for vehicles with KESSY control module:
9.1. Pull KESSY wiring harness in through the opening. Install rubber sleeve in the unit carrier until it engages completely ( -Arrow A- ).
9.2. Insert plug into the socket ( -Arrow B- ) until it clicks into place.
Subsequent work
1. Install rear-view mirror => Removing and installing rear-view mirror.
2. Install front door trim => Removing and installing front door trim.
3. Install door handle => Installing door handle.
4. Teach power windows => Work instructions after disconnecting the battery.