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Re: How do you close the sunroof when the motor has...
Some cars have an access panel behind the sunroof inside the car. If you remove that access panel there should be a way to crank the sunroof closed manually. Not all vehicles have this unfortunately and if yours does not you may be stuck until the motor is replaced.
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Sunroof Description and Operation (One Connector System)
This diagnostic procedure is to be used for the 1 connector Sunroof System that combines the sunroof control module with the sunroof motor/actuator.
The Sunroof System consists of the following components:
• BATT MAIN 2 Fuse 50 A
• Body control module (BCM)
• RAP relay
• S/Roof Fuse 20 A
• Sunroof module (includes sunroof motor/actuator)
• Sunroof switch
The Sunroof System is controlled by the sunroof switch and the sunroof motor/actuator assembly.
When the ignition is turned to RUN or ACCESSORY, or when the retained accessory power (RAP) system is active, the body control module (BCM) applies a ground to the RAP relay in the instrument panel (I/P) fuse block. This activates the RAP relay and allows battery positive voltage to be applied through the SUNROOF Fuse to the sunroof module. Ground for the sunroof module is supplied from G302.
The sunroof can be placed in 3 preset positions:
When the sunroof switch is placed in the OPEN position, a ground is applied from the sunroof switch low reference circuit , through the sunroof switch and to the sunroof switch open signal circuit. The sunroof motor/actuator then applies voltage to the sunroof motor open control circuit and applies a ground to the sunroof motor close circuit. The sunroof motor then opens the sunroof to the full open position.
When the sunroof switch is placed in the VENT position, a ground is applied from the sunroof switch low reference circuit , through the sunroof switch and to the sunroof switch open signal circuit. The sunroof module then applies voltage to the sunroof motor open control circuit and applies a ground to the sunroof motor close circuit. The sunroof motor then opens the sunroof to the VENT position.
When the sunroof switch is placed and held in the CLOSED position, a ground is applied from the sunroof switch low reference circuit , through the sunroof switch and to the sunroof switch close signal circuit. The sunroof module then applies voltage to the sunroof motor close control circuit and applies a ground to the sunroof motor open circuit. The sunroof motor then closes the sunroof.
The sunroof can be placed in any preferred open position when:
• The sunroof is in the fully opened position by pressing and holding the sunroof switch in the CLOSE position until the panel has reached the desired position then release the CLOSE switch in order to stop the sunroof
• The sunroof is opening, it can be stopped by momentarily pressing either side of the switch.
The sunroof control module, sun roof actuator, and the sunroof motor are integral parts of the sunroof module assembly and are not service separately.
Your best bet , take it to a qualified repair shop or buick dealer .
If your motor is audible and your fuses and connectors are okay, you may have to take a close look at the plastic gear parts up in the roof. The nylon parts do wear out since they are in the roof and more exposed to different temperatures. If any of that mechanism fails then your sunroof will stop working even if the motor is still good. It is a bit of a PITA to get to it since you will have to remove the headliner to get at the mechanism and then identify the worn part and replace it CAUTION: The sunroof system is timed from the factory so that the motor shuts off automatically when the sunroof window reaches a certain position. Extreme care must be taken when removing the motor, timing may be thrown off causing possible damage to the sunroof system. Anytime the motor is removed from the sunroof assembly the sunroof glass panel must be in the FULLY CLOSED POSITION or the unit will be out of timing. The drive motor cannot be reset to the park position after being removed.
CAUTION: The sunroof motor should only be powered through the vehicle battery and sunroof wire harness. Applying power to the sunroof motor leads will cause failure of the control module.
Move glass panel to the fully closed position.
Move glass panel to the fully closed position.
Remove the A-pillar trim. (Refer to 23 - BODY/INTERIOR/A-PILLAR TRIM - REMOVAL)
Remove the B-pillar upper trim. (Refer to 23 - BODY/INTERIOR/B-PILLAR UPPER TRIM - REMOVAL)
Remove the C-pillar trim. (Refer to 23 - BODY/INTERIOR/C-PILLAR TRIM - REMOVAL)
Remove the D-pillar trim. (Refer to 23 - BODY/INTERIOR/D-PILLAR TRIM - REMOVAL)
Remove the sunvisors. (Refer to 23 - BODY/INTERIOR/SUN VISOR - REMOVAL)
Remove the overhead console. (Refer to 8 - ELECTRICAL/OVERHEAD CONSOLE - REMOVAL)
Disconnect the control switch wire connector.
Remove headliner as necessary to gain access to sunroof drive motor. Refer to Headliner Removal and Installation for proper procedures.
Disconnect the drive motor wire harness connectors (Sunroof Drive Motor and Express Module).
Remove drive motor fasteners and remove motor from the sunroof housing
You have to remove the overhead control unit (front dome lamp assembly) to gain access to the sunroof motor(link below) You can then put an allen wrench/socket into the drive motor for the sunroof and turn to close. This works if the sunroof motor has failed. If the problem is the switch, you might get lucky by pointing the key at the IR pickup on the driver's door handle and holding the lock button. That should close all of the windows and the sunroof. Mercedes 211 overhead mirror removal
all electric sunroofs have a manual close .remove the cover at the headlining should be two screws . then turn the center slot with a large flat head screwdriver to close it.check the fuse first. if ok do the above . the trouble is a failed motor .
Hey Paul, there are limit switches integrated into the motor on your sunroof, usually if it stops completely its because it detected a restriction, such as leaves, or dirt, if there are no visual sign then with the key on hold the switch to the full open position for 10-12 sec then hold it in the close position for the same, cycle the key and see if it reset. The motor can fail as well but it's not very common.. Do u hear any clicking from the motor area when this occurs, also check all fuses to be safe as well,..
there should be a slot you can put a flat head screwdriver in to turn the motor round and close the roof. the motor assembly there is a magnet inside and a reader to tell the motor when to stop or move. the sensor can fail and ope till it cannot move any more it also as a water trigger. this in the event that the vehicle is under water the sunroof opens so you can get out. this feature can go wrong a well.
Depending on the year of your vehicle.... Earlier models had a sunroof wrench. The manual states that ..."the electronic sunroof system cannot be operated manually. The sunroof wrench that was used in previous models is not provided".
Now that may mean that if you had the wrench it could be operated manually.
I did find something else here : NOTE: If there is a problem with the sunroof motor so that the roof lid glass cannot close fully, use an Allen wrench to turn the gear section of the sunroof motor to fully close the roof lid glass.