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My sunroof is slow opening up - Cars & Trucks

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  • Cars & Trucks Master
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Depending on age, I'd guess it needs some lubrication both in the motor drive and the guide rails. I am partial to a silicone grease that is long lasting and somewhat water resistant. The drive motor is something else.

Posted on Apr 13, 2015

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tripletauto
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SOURCE: Sunroof moves very slow & also stops when I try to open or close sunroof. Is it the relay or the motor?

IT is either the motor or track binding up

Posted on Nov 15, 2011

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Sunroof does not open. Fuse is ok and the shade operates normally.


Do you know how to do automotive electrical testing ?????? How to read a wiring diagrams ???? http://www.bbbind.com/free_tsb.html .Videos on youtube Ohms Law Tech Tip from L1 with Dave Hobbs Copy of Voltage Drop Essentials TST Motor Age The only way to find the problem , testing !

Sunroof Description and Operation (One Connector System)
Sunroof
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:
• Open
• Vent
• Closed
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 .

Feb 10, 2017 | 2010 Buick LaCrosse CXS

1 Answer

My sunroof doesn't close


This could be a couple of problems. Check to see that there is nothing in the sunroof track. Believe it or NOT you may even have a worn sunroof motor. Over time it can drag down needing replaced. Need more info...how old is the Vehicle & does the sunroof open real slow in reverse direction. Are you able to close it helping along with your hand and the sunroof motor as well?

Feb 08, 2016 | 1999 Lincoln Continental

1 Answer

My Sunroof does not open when button is pressed. What could be the problem?


Sunroof repairs - JeepsUnlimited

www.jeepsunlimited.com/forums/showthread.php?65808-Sunroof...

Sep 6, 2001 - 17 posts - ‎13 authors
It is too beautiful out today to not be able to open your sunroof. ... 1998 Grand Cherokee Ltd. .... 98 5.9 Grand Cherokee ... 91YJ Project Jeep .... not to bring this thread back to the dead or anything, but how do you solder the ... Getting that sunroof fuse out. - JeepsUnlimited
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Sunroof opens ALL the way - JeepsUnlimited
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2004 Moonroof tilts up but won't slide back
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jeep cherokee sunroof motor - ABMforum.com

abmforum.com/jeep-cherokee-sunroof-motor.html
Currently my sunroof is not functioning properly. I have a 1999 jeep Grand cherokeeLimited. The sunroof vents and opens (although it does not auto open ..

Nov 19, 2015 | 2004 Jeep Grand Cherokee

1 Answer

Why aren't electric windows, sunroof and windshield wiper delay and slow speed working?


[PDF]mini body control module - BMW-Planet.com

www.bmw-planet.com/lib/mini/BODY%20CONTROL.pdf
Always check ALL the fuse that supply power to the BC1. ... the heated rear windowand optional heated front screen until the voltage level exceeds 12.2 ... Convenience Opening and Closing of windows and sunroof ..... intermittent wipe, slow, and fastspeeds. .... Road speed has no influence over wiper speed 1 (Slow).

Nov 19, 2015 | Cars & Trucks

2 Answers

1996 Jaguar xj6 sunroof will not close you can hear motor running, how can you manual close it?


If you remove any gear that is coupling it to the motor you should be able to slide it back to where you want. I would put gear back just to hold it in place and keep it from moving. But you do have to replace that gearbox for future operation.

Sep 06, 2017 | Jaguar Vanden Plas Cars & Trucks

1 Answer

Fixing my sunroof in a merceds 300E


Lubrication of the Sunroof in the 300E is a part of your regular service schedule. Mercedes Sells the correct lubrication grease.

See HERE for some semi-detailed instructions and places to get the grease and whatnot.


As usual when working with motorized devices, make sure to disconnect the fuse for the sunroof, or the battery from the car, to prevent injury and damage.

Oct 21, 2012 | Mercedes-Benz 300-Class Cars & Trucks

1 Answer

Sunroof slow operation


take a rag and spray it with brake part cleaner and clean down the sunroof tracks and then lube them with lube made for fishing reels from a sporting good store

Jul 04, 2012 | 2003 Chevrolet Impala

1 Answer

Moonroof wont close all the way


Do you know how to test automotive electrical circuit's with a DVOM - digital volt ohm meter ? When adjusting the moon roof did you see any switches ? sunroof limit switch
Measure the reference voltage of the sunroof limit switch soft stop signal circuit at the sunroof control harness connector to a good ground.
Does the reference voltage measure near the specified value?
4.5-5.5 V
Notice: Do not open the sunroof glass past the full open soft stop position. Doing so may damage the sunroof assembly and or the roof top.
Connect a jumper wire to the sunroof limit switch soft stop signal circuit at the sunroof control module harness to a good ground.
Turn ON the ignition, with the engine OFF.
Using the sunroof switch, operate the sunroof system, not to exceed the full open soft stop position.
Does the system operate as requested?

Do you know what a wiring diagram is ? Free one's here
http://www.bbbind.com/free_tsb.html Enter vehicle info. year ,make ,model an engine size . Under system click body & accessories ,then under subsystem click on sun roof . Click the search button then the blue link . See the control module , motor an the two switches ? One is probably miss adjusted . or bad !

Power Sunroof System Components
The power sunroof system consists of the following components:
• Sunroof control module
• Sunroof motor with the limit switches
• Sunroof switch
• Sunroof glass-spoiler type, with glass sliding above roof
• Sunshade
• Rail and track assembly upon which the sunroof glass rides
• Power sunroof system circuit breaker: PWR WDO 25 A
• Ground: G204

Sunroof Limit Switches
The sunroof limit switches track the position of the sunroof glass through two limit switches:
• Soft Stop limit switch through the sunroof limit switch soft stop signal circuit
• Vent Stop limit switch through the sunroof limit switch range signal circuit
The sunroof control module monitors the limit switches and based on the input combinations, determines the position of the sunroof glass. As a sunroof limit switch closes, the 5 volt reference will be shorted to the sunroof limit switch low reference circuit, pulling the 5 volt reference to 0 volts.
The sunroof control module monitors both sunroof switch input requests and based on the sunroof limit switch input combinations, will control an output to the sunroof motor, to drive the sunroof glass to the requested position.

Sunroof Motor
The sunroof has a bi-directional motor. When the motor is not operating both circuits are grounded. When the motor drives the sunroof glass in the direction from the closed to vent or vent to open position, the following occurs:
• Voltage is supplied to the sunroof motor open circuit.
• Ground is maintained to the sunroof motor close circuit.
When the motor drives the sunroof in the direction from the open to vent or vent to closed position, the following occurs:
• Voltage is supplied to the sunroof motor close circuit.
• Ground is maintained to the sunroof motor open circuit.
The sunroof control module is equipped with a timer circuit which stops the operation of the sunroof motor after 8 seconds.

Dec 23, 2017 | 2003 Pontiac Sunfire

1 Answer

2002 Pontiac Grand Am GT sunroof problems


its the tracks and regulator need to be greased or replaced

May 24, 2009 | 1988 Pontiac Grand Am

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