600649 Eliminating Noise Symptoms - Reworking Roof Assembly
WM 600649 Eliminating noise symptoms - Reworking roof assembly
Technical values
General information
Symptoms
General noises from the roof assembly.
Causes and remedial action
Noises can come from the roof assembly while driving due to relative movements.
In the event of a complaint, the noises must be eliminated according to the specified procedure. The defective components may need to be replaced.
Information
All measures for eliminating noises are performed with the roof assembly installed.
If the measures do not help to eliminate the noises, please contact the Technical Competence Center (TCC) before removing the roof assembly.
Procedure for eliminating noises from the roof assembly
Information
There must always be two people in the vehicle when performing test drives for the purpose of finding the source of noises - a driver, who simulates the situation in which the noise occurs, and a person to check the noise.
Optional accessories or objects must be removed from the vehicle before the test drive.
The test drive must be carried out on an even road surface, observing the road traffic regulations.
During the test drive, pay attention to the following information in order to localise the faults:
- Check to see exactly where the noise is coming from on the roof assembly at the front or rear, left/right.
- Check the cause of the noise, particularly related noises.
Overview of exact location of noises on the roof assembly
Reworking sliding-roof panel/roof joint cover strip
Tools and materials
Tools
Materials
Reworking roof joint cover strip
1. Open the sliding-roof panel.
2. Remove roof joint cover strip at the left and right.
Removing roof joint cover strip
NOTICE
Roof joint cover strip removed incorrectly
- Roof joint cover strip can bend out of shape
-> Unclip the roof joint cover strip carefully and evenly at the retaining clips.
2.1. Unclip roof joint cover strip -1- carefully and evenly up out of the retaining clips -2, 3- ( -arrow- ) using a plastic wedge.
3. Check flock-coating on the roof joint cover strip sealing lip. If worn, replace the roof joint cover strip if necessary.
4. Close the sliding-roof panel.
4.1. Switch on ignition and close the sliding-roof panel until it is approx. 20 mm away from the air deflector.
4.2. Switch off ignition.
5. Clean the sliding-roof panel.
Cleaning sliding-roof panel
5.1. Thoroughly clean the sliding-roof panel at the sides and front along the rubber coating (outer edge of glass surface) with isopropanol.
Information
- The bonding surfaces must be clean and free of grease.
- The Teflon tape must be applied without blisters; creases and blisters are not permitted.
- When sticking on the Teflon tape, make sure that it is affixed precisely on the rubber coating and also that bonding is guaranteed by using contact pressure.
6. Stick on Teflon tape at the sides (contact surface to roof joint cover strip).
Sticking on Teflon tape
6.1. Place Teflon tape -1- on the front and side edges of the panel -2- (rubber coating) and stick it on approximately as far as the middle of the panel ( -Figure A- ).
6.2. Switch on ignition and close the sliding-roof panel -2- completely -arrow- ( -Figure B- ).
6.3. Switch off ignition.
6.4. Stick on Teflon tape -1- as far as the outer edge of the panel -2- (rubber coating) ( -Figure C- ).
6.5. Cut off the Teflon tape -1- flush with the outer edge.
7. Open the sliding-roof panel.
7.1. Switch on ignition and open the sliding-roof panel until it is approx. 100 mm away from the air deflector.
7.2. Switch off ignition.
8. Stick on Teflon tape at the front (contact surface to cowl panel cover).
Sticking on Teflon tape
8.1. Place Teflon tape -1- on the front edge of the panel -2- (rubber coating) so that it is flush with the Teflon tape at the side and stick it on.
9. Install roof joint cover strip at the left and right.
Positioning roof joint cover strip
9.1. Check retaining clips -4- and replace them if necessary.
9.2. Slide the roof joint cover strip -1- under the trim frame of the rear window -2- ( -arrow A- ).
9.3. Position roof joint cover strip -1- with the positioning strap at the cowl panel cover -3- ( -arrow B- ).
9.4. Press in roof joint cover strip -1- until it clicks into place.
Working times
66365000: Reworking roof joint cover strip; Labor time 30 TU
Reworking drive mechanism
Tools and materials
Materials
Reworking drive mechanism
1. Detach the fabric lining at the front and fold it aside. => 606119 Removing and installing fabric lining - section on "Removing"
2. Clean and grease the guide rails and gate guide at the sides.
2.1. Clean the guide rails -1- and gate guide -2- at the left and right.
2.2. Lubricate guide rails -1- and gate guide -2- at the left and right with FIN Super.
Greasing sides of guide rails and gate guide
3. Clean and grease the side holders.
Cleaning and greasing side holders
3.1. Clean the side holders -1, 2- at the left and right.
3.2. Clean the side holders -1, 2- at the left and right and lubricate them with FIN Super.
Information
If the mounting plates of the mounts are not braced properly against each other, the panel for the sliding roof may not function correctly. If they are not braced adequately, rattling noises can occur while driving. If they are braced too tightly, the sliding roof panel can be stiff and difficult to open and close.
4. Check and adjust the preload.
4.1. The mounting plates for the holders at the left -1- and right -2- must be braced against each other. To do this, starting at the front and rear right, insert a wide screwdriver between the mounting plates for the holders and the frame -3- ( -arrow- ) and check the preload.
Position parallel -dimension X- with the roof assembly.
Aligning frame
4.2. If the preload is not correct, loosen the fastening screw on the mounting plates for the holders and adjust outwards by pressing the screwdriver.
Then tighten the fastening screws. => Tightening torque: 7.5 Nm (5.5 ftlb.)
5. Check the end rubber stops in the gate links and replace them if they are worn.
5.1. Pull end rubber stops -1- out of the gate links -2- at the left and right using a screwdriver -arrow-.
Removing end rubber stops
5.2. Press new end rubber stops -1- into the gate links -2- on the left and right -arrow-.
Installing end rubber stops
6. Secure fabric lining at the front. => 606119 Removing and installing fabric lining - section on "Installing"
Working times
60354900: Reworking drive mechanism; Labor time 80 TU
Reworking air deflector
Tools and materials
Tools
Materials
Reworking air deflector
1. Open the sliding-roof panel.
2. Clean and grease all moving parts of the air deflector.
2.1. Pull off rubber sleeve -1- from the pivot bearing -2- at the left and right -arrow A-.
Releasing pivot bearing
2.2. Remove circlip -3- at the left and right using a screwdriver -arrow B-.
2.3. Pull air deflector (bolt) -1- halfway out of the pivot bearing -2- ( -arrow A- ), then clean it and spray with FIN Super.
Spraying pivot bearing
2.4. Press in air deflector (bolt) -1- completely -arrow B-.
2.5. Press circlip -3- into the pivot bearing -2- at the left and right using a screwdriver -arrow A-.
Securing pivot bearing
2.6. Press in rubber sleeve -1- at the pivot bearing -2- at the left and right -arrow B-.
2.7. Clean air deflector mechanism -1- and air deflector supports -2- at the left and right.
Cleaning and greasing air deflector mechanism and air deflector supports
2.8. Lightly lubricate air deflector mechanism -1- and air deflector supports -2- at the left and right with Krytox.
3. Check rubber stops for air deflector slat and replace if worn.
3.1. Pull off rubber stops -1- ( -arrows- ), remove adhesive residue and clean the bonding surface.
Pulling off worn rubber stops
Information
The bonding surfaces must be clean and free of grease.
3.2. Stick new rubber stops -1- at -X = 100 mm- on the roof assembly -2- ( -arrows- ).
Sticking on rubber stops
Working times
60334900: Reworking air deflector; Labor time 20 TU
Reworking seal for centre joint
Tools and materials
Materials
Reworking seal for centre joint
1. Check seal for centre joint -1- for visible signs of wear on the anti-friction coating (contact surface to sliding-roof panel).
Checking seal
1.1. If this is OK: Clean and grease with Krytox.
1.2. If this is not OK: See Step 2.
2. Replace seal for centre joint if the previous measure does not work.
2.1. Pull seal -1- out of the roof assembly frame in -direction of arrow-.
Removing seal
2.2. Pull new seal -1- into the roof assembly frame in -direction of arrow-. The seal -1- must be flush on the left and right.
Installing seal
Working times
60444900: Reworking seal for centre joint; Labor time 10 TU
Reworking sunroof seal at the bottom
Tools and materials
Tools
Materials
Reworking sunroof seal at the bottom
1. Clean and grease sunroof seal at the bottom.
Cleaning and greasing seal
1.1. Open the rear window cover.
1.2. Lock the closing aid with a screwdriver.
1.3. Move the sliding-roof panel to the rear.
1.4. Clean the seal -1- through the open rear window cover.
Clean the front edge of the seal from inside the vehicle.
1.5. Grease the seal with Krytox.
2. After greasing, release the closing aid and remove the screwdriver.
3. Replace sunroof seal at the bottom if the previous measure does not work.
When replacing the sunroof seal at the bottom, also replace the seal at the top.
3.1. Remove frame for sliding-roof panel. => 602819 Removing and installing frame for sliding-roof panel - section on "Removing"
3.2. Lift seal -1- out of the groove in the frame for the sliding-roof panel -2- all the way around -arrow-.
Removing seal
3.3. Install seal.
Installing seal
3.3.1. Prime bonding surfaces at the corners of the frame for the sliding-roof panel -2- with 3M 4297 primer.
3.3.2. Press new seal -1- into the groove in the frame for the sliding-roof panel -2- all the way around -arrow-.
3.3.3. Pull protective film -3- off the adhesive strips at the corners of the seal -1-. Also apply a few drops of instant adhesive -4- to the corners and press seal -1- on firmly at the corners to secure it to the frame for the sliding-roof panel -2- ( -arrow- ).
4. Install frame for sliding-roof panel. => 602819 Removing and installing frame for sliding-roof panel - section on "Installing"
Working times
60464900: Reworking sunroof seal at the bottom; Labor time 150 TU
Reworking sunroof seal at the top
Tools and materials
Tools
Materials
Reworking sunroof seal at the top
1. Clean sunroof seal at the top.
Cleaning seal
1.1. Open the rear window cover.
1.2. Lock the closing aid with a screwdriver.
1.3. Move the sliding-roof panel to the rear.
1.4. Clean the flock-coating on the seal with a brush through the open rear window cover.
Clean the front edge of the seal from inside the vehicle.
2. After cleaning, release the closing aid and remove the screwdriver.
3. Replace sunroof seal at the top if the previous measure does not work.
3.1. Remove sliding-roof panel. => 604019 Removing and installing sliding-roof panel - section on "Removing"
3.2. Pull seal off the sliding-roof panel all the way around -arrow-.
Removing seal
3.3. Position new seal all the way around the sliding-roof panel -arrow-.
Installing seal
4. Install sliding-roof panel. => 604019 Removing and installing sliding-roof panel - section on "Installing"
Working times
60421950: Reworking sunroof seal at the top; Labor time 120 TU
Reworking cowl panel cover
Tools and materials
Tools
Materials
Reworking cowl panel cover
Information
Do not remove cowl panel cover as it will be irreparably damaged during removal and must be replaced.
1. Open the sliding-roof panel.
2. Loosen cowl panel cover.
Loosening cowl panel cover
2.1. Pull out rubber sleeves -1- ( -arrow- ) and unscrew fastening screws -2- out of the cowl panel cover -3-.
3. Rework fastening screws.
Reworking fastening screws
3.1. Check fastening screws (3x).
3.2. File down fastening screws (3x) by approx. 1 mm with a file.
3.3. Lubricate fastening screws (3x) with Krytox.
4. Secure cowl panel cover.
Securing cowl panel cover
4.1. Secure the cowl panel cover -3- with the fastening screws -2-. => Tightening torque: 1.6 Nm (1 ftlb.)
4.2. Press in rubber sleeves -1- ( -arrow- ).
5. Clean flock-coating on sealing lip on cowl panel cover.
Cleaning cowl panel cover (flock-coating)
5.1. Clean flock-coating with a brush.
Working times
60324900: Reworking front cover; Labor time 30 TU
Reworking rear window cover
1. Check rubber stop adjustment at the rear window cover.
Checking rubber stop adjustment at rear window cover
1.1. Check the excess force at the rubber stop -1- by hand from the inside through the rear window cover -2-. If you can move the rubber stop -1- , then the excess force must be corrected by unscrewing the rubber stop (max. 1 turn).
1.2. Check the contact between the rear window cover and rubber stop using a strip of paper.
Checking contact pressure of rear window cover
Information
- If the paper strip can be pulled out, then the excess force at the rubber stop must be corrected. Adjust the closing aid if necessary. => 642119 Removing and installing closing aid - section on "Installing"
Working times
64864900: Reworking rear window; Labor time 20 TU
Reworking trim frame for rear window
Tools and materials
Tools
Materials
Reworking trim frame for rear window
1. Remove side trim frame. => 666919 Removing and installing trim frame for rear window - section on "Removing"
2. Check trim frame at the rear (right and left) and rework it if necessary.
Reworking trim frame
2.1. De-burr sharp edges -A- using sandpaper.
2.2. Clean the area where the rear trim frame -1- meets the side trim frame.
2.3. Stick on Teflon tape -2- in the marked area.
3. Check the contact area between the rear window -1- and side trim frame -2- to see if there is any Teflon tape -3- and stick on Teflon tape if necessary.
Checking rear window contact area
4. Install side trim frame. => 666919 Removing and installing trim frame for rear window - section on "Installing"
5. Check narrow point between the side trim frame -1- and hinge -2- and correct the clearance by adjusting the hinge if necessary.
Checking narrow point of side trim frame
Working times
66694900: Reworking trim frame for rear window; Labor time 40 TU