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Quarter Window Regulator: Service and Repair



Removing And Installing Rear Window Lifter

Tools







Technical values







Preliminary work

INFORMATION: Only for vehicles with hardtop.

1. Remove hardtop. Refer to Removing and installing hardtop.
2. Move convertible top to service position. Refer to IN -Convertible top service position
3. Remove rear side trim panel. Refer to Removing and installing rear side trim panel.

Removing rear window lifter

Loosening hydraulic cylinder







1. Press out the two retaining clips -1- from the lever -2- using assembly tool for Springfix System pin circlips NR.131 and remove lever.







2. Pull the protection plate -3- upwards out of the chamber in the water drip pan -4-.







CAUTION: Damage to hydraulic lines.
- Do not bend, trap or crush hydraulic lines when removing and installing.
- Pay special attention when routing hydraulic lines in the clips.

3. Unscrew fastening nut -5- and lay hydraulic cylinder -6- with lever to one side.







Removing rear window lifter

INFORMATION: Removal and installation of the rear window lifter should be carried out with the side window. Otherwise adjustment work is hindered during installation.







1. Undo front and rear fastening screws -1- from the convertible top support and the belt guide section -arrows A-, and pull rear window inner seal -2- up and out -arrow B-.







2. Connect the PIWIS tester 9718 to the diagnostic socket.
3. Switch on ignition.

INFORMATION:
- The rear window lifter can only be removed when closed.
- This closed state can only be achieved with the PIWIS tester when the convertible top is in service position.

4. Select the Convertible top menu item, then Drive links, and select theRaise rear door window (left or right) menu item in the command line which then appears.

INFORMATION: The lower adjusting element for power windows is only accessible by removing the rubber sleeve from the wire harness for power windows.

5. Remove rubber sleeve -1- from wire harness for power windows -2- by pulling it inwards -arrow-.







6. Release adjusting elements for power windows with the adjustment tool -1- adjustment tool for rear window NR.123-1. To do this, loosen and unscrew the nuts -2- on the adjusting elements ( -arrows- ).







CAUTION: Risk of damage to or destruction of the convertible top when the convertible top support is removed.
- The convertible top must no longer be electrically operated when the convertible top support is detached.

7. Remove fastening screws -1- and fastening nuts -2- from the convertible top support -3-. Remove fastening screws -4- for securing the deflection fitting -5- in the belt guide section. Pull deflection fitting -5- up out of the belt guide section. -arrow A- Pull convertible top support -3- inwards ( -arrow B- ) and fix a spacing block -6- measuring -dimension a = 30 mm- between B-pillar and convertible top support -arrow C-.







8. Pull window lifter -1- up and off -arrow A-.







9. Release latch -2- on electric plug connection -3- ( -arrow B- ) and pull plug connection off window regulator motor -4- ( -arrow C- ).

Installing rear window lifter







1. Connect electric plug connection -1- to window regulator motor -2- ( -arrow A- ) and lock the latch -3- ( -arrow B- ).







2. Guide window lifter -4- into the window shaft from above -arrow C- and position in the mounts in the inner side section.
3. Remove spacing block -1- between B-pillar and convertible top support -2- ( -arrow A- ). Position convertible top support -2- ( -arrow B- ). Position and tighten fastening screws -3- and fastening nuts -4- in convertible-top support -2-. Tightening torque: 23 Nm (17 ftlb.)







4. Insert the deflection fitting -5- into the belt guide section -arrow C-. Screw in and tighten fastening screws -6-. Tightening torque: 50 Nm (37 ftlb.)

Installing hydraulic cylinder







CAUTION: Damage to hydraulic lines.
- Do not bend, trap or crush hydraulic lines when removing and installing.
- Pay special attention when routing hydraulic lines in the clips

1. Position hydraulic cylinder -6- with the lever on the convertible-top support. Insert potentiometer fork into the pin of the hydraulic housing (on the left side only).
Lay hydraulic line -Figure A- in the clip under the water drain hose. In -Figure B- and -Figure C- press the hydraulic lines into the clips. Tighten fastening nuts -5-. Tightening torque: 17 Nm (13 ftlb.)± 2 Nm (±1.5 ftlb.)







2. Fit lever -2- and secure with retaining clip -1-.







3. Insert protection plate -3- in chamber of water drip pan -4-.







Adjusting rear window lifter

INFORMATION:
- By moving the window lifter with respect to the longitudinal axis of the vehicle, the power windows can be adjusted by dimension -Y = ± 10 mm-. The contact pressure of the upper edge of the side window on the convertible top is adjusted by screwing the adjusting element in or out by dimension -X = ± 10 mm-. The contact pressure on the rear window inner seal or the offset from the door window is adjusted by screwing both of the upper adjusting elements in or out by dimension -X = ± 5 mm-.
- Adjusting tool for rear window lifter. Adjusting tool for rear window NR.123-1

1. Adjust the basic setting of the adjusting elements -1- from the upper edge moulding of the rear side panel to the side window. Gap dimension C: 11 mm, Gap dimension D: 14 mm







2. Push the power window backwards or forwards to adjust the gap between the side window and door window. Gap dimension E: 9 mm±1 mm
3. Adjust the contour or the offset with respect to the door window on the adjusting element -2-.
4. Screw on adjusting elements for power windows -1- and -2-. Tightening torque: 23 Nm (17 ftlb.)
5. Fit rubber sleeve -1- on wire harness -2- for power windows -arrow-.







6. Insert rear window inner seal -1- into rear side section slot from above -arrow A- and position on the convertible top support or belt guide section.







7. Insert and tighten front and rear fastening screws -2- ( -arrows B- ). Tightening torque: 10 Nm (7.5 ftlb.)

Additional instructions for adjusting or replacing the rear window lifter

The rear power windows can be operated if:
1) the convertible top is closed.
2) the ignition is switched on.
3) the ignition key is not removed from the steering lock after the ignition is switched off.
4) after the ignition is switched off until a door is opened for the first time.
5) the door is open, USA vehicles do not have this function.

INFORMATION: The end positions of the power windows are deleted from the control unit when the electric connectors are disconnected and connected.

Standardising the system

1. Set rocker switch and fully close window once.
2. Set rocker switch to Close again. The upper end position of the side window is stored.
3. Set rocker switch and fully open window once.
4. Set rocker switch to Open again. The lower end position of the side window is stored.

Blockage detection function

If the window drive encounters resistance when activated, the motor is switched off after a delay of 500 ms. If the rocker switch is pressed again within 10 seconds, the side window closes the power window with all of its closing force. The anti-crushing protection is deactivated.

Subsequent work

1. Install rear side trim panel. Refer to Removing and installing rear side trim panel.
2. End service position. Refer to IN -Convertible top service position

INFORMATION: Only for vehicles with hardtop.

3. Install hardtop. Refer to Removing and installing hardtop.

INFORMATION: Only for vehicles with hardtop.

4. Adjust the hardtop. Refer to Adjusting hardtop
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