Rear Door Window Regulator: Service and Repair
WM 647119 Removing and installing rear window lifter
Tools
Technical values
Preliminary work
Information
Only for vehicles with hardtop.
1. Remove hardtop. => 610219 Removing and installing hardtop - section on "Removing"
2. Move convertible top to service position.=> 6101IN IN -Convertible top service position
3. Remove rear side trim panel.=> 707519 Removing and installing rear side trim panel - section on "Removing"
Removing rear window lifter
Loosening hydraulic cylinder
Installation position for hydraulic cylinder
1. Press out the two retaining clips -1- from the drive lever -2- using assembly tool for Spring fix System pin circlips Nr.131 and remove drive lever.
Removing lever
2. Pull the splash guard -3- upwards out of the chamber in the water drip pan -4-.
Removing protection plate
NOTICE
Incorrect line routing
- Risk of damage to lines and hoses
- Malfunction and fault memory entry on control unit
-> Avoid small bending radii when routing lines.
-> File down edges and burrs in the routing area or mask them with adhesive tape.
-> Maintain a sufficient distance from components exposed to high temperatures while driving.
NOTICE
Incorrect line routing
- Risk of damage to lines and hoses
- Malfunction and fault memory entry on control unit
-> Avoid small bending radii when routing lines.
-> File down edges and burrs in the routing area or mask them with adhesive tape.
-> Maintain a sufficient distance from components exposed to high temperatures while driving.
3. Unscrew fastening nut -5- and lay hydraulic cylinder -6- with drive lever to one side.
Loosening hydraulic cylinder
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.
Installation position of rear window lifter
1. Undo front and rear fastening screws -1- from the convertible top support and the belt guide section mounting -arrows A- , and pull rear window inner seal -2- up and out -arrow B-.
Removing rear window inner seal
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-.
Removing rubber sleeve
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- ).
Loosening adjusting elements for power windows
NOTICE
Incorrect handling of removed hood support
- Risk of damage to hood
-> Do not operate the hood electrically again if the hood 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 mounting. Pull deflection fitting -5- up out of the belt guide section mounting. -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-.
Detaching convertible top support
8. Pull power window -1- up and off -arrow A-.
Removing window lifter
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
Installation position of rear window lifter
1. Connect electric plug connection -1- to window regulator motor -2- ( -arrow A- ) and lock the latch -3- ( -arrow B- ).
Installing power windows
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.)
Securing convertible top support
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
Installation position for hydraulic cylinder
NOTICE
Incorrect line routing
- Risk of damage to lines and hoses
- Malfunction and fault memory entry on control unit
-> Avoid small bending radii when routing lines.
-> File down edges and burrs in the routing area or mask them with adhesive tape.
-> Maintain a sufficient distance from components exposed to high temperatures while driving.
NOTICE
Incorrect line routing
- Risk of damage to lines and hoses
- Malfunction and fault memory entry on control unit
-> Avoid small bending radii when routing lines.
-> File down edges and burrs in the routing area or mask them with adhesive tape.
-> Maintain a sufficient distance from components exposed to high temperatures while driving.
1. Position hydraulic cylinder -6- with the drive lever on the convertible top support. Insert potentiometer fork into the pin of the hydraulic housing (on the left side only). Lay hydraulic line -illustration A- in the clip under the water drain hose. In -illustration B- and -illustration C- press the hydraulic lines into the clips. Tightening fastening nuts -5-. => Tightening torque: 17 Nm (13 ftlb.)+/-2 Nm (+/-1.5 ftlb.)
Installing hydraulic cylinder
2. Fit drive lever -2- and secure with retaining clip -1-.
Installing lever
3. Insert splash guard -3- into the chamber in the water drip pan -4-.
Installing protection plate
Adjusting rear window lifter
Information
By moving the power windows mechanism 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 power windows. 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
Adjusting power windows
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-.
Fitting rubber sleeve
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.
Installing rear window inner seal
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
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.=> 707519 Removing and installing rear side trim panel - section on "Installing"
2. End service position.=> 6101IN IN -Convertible top service position
Information
Only for vehicles with hardtop.
3. Install hardtop. => 610219 Removing and installing hardtop - section on "Installing"
Information
Only for vehicles with hardtop.
4. Adjust the hardtop. => 610215 Adjusting hardtop