Question about 1984 Mercedes-Benz 190

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Sunroof will not open. i can here the motor and the track but don't know how to get it to open

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If the motor is engaging and there is a rapid clicking noise, then the track itself has stripped out and will require replacement. The motor can be accessed by the cover nearest the windshield. This can be removed and inspected for the gear being stripped. If any parts are needed, contact silverstar Mercedes/Porshce recycling in California and they carry all kinds of used parts that will save you money. They also gaurantee that stuff will work. Very good company.

Posted on May 27, 2010

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Wifes sunroof is open and will not close. Checked fuse it has pwr, removed switch it does not have power ... a ground problem at the sunroof motor...where is that?


First off this is controlled by a module (computer) The switch would only have five volts . 5volt reference voltage from the control module . Not knowing how to test the electrical circuit's for this could be expensive . Short out the module or 5 volt ref. voltage circuit inside the module.
Your best bet , take it to a qualified repair shop . Look at a wiring diagram here http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model and engine size . Under system click on body & accessories ,then under subsystem click sun roof . Then click search button then the blue link . Now tell me you under stand what's happening here .

Power Sunroof System Components
The power sunroof system consists of the following components:
• Sunroof control module
• Sunroof Opening Position Switch (SOPS)
• Sunroof switch
• Sunroof motor/actuator
• Sunroof glass (spoiler type, with glass sliding above roof)
• Sunshade
• Rail and track assembly upon which the sunroof glass rides
• Power supply for the sunroof control module: SUNROOF 20 A fuse
• Ground from G302

Sunroof Opening Position Switch (SOPS)
The SOPS tracks the position of the glass through 2 limit switches:
• Soft stop limit
• Vent limit
The sunroof control module monitors the limit switches and based on the inputs determines the position of the sunroof glass. As a limit switch closes, the 5 volt reference will be shorted to the sunroof limit switch low reference circuit, pulling down the 5 volt reference to 0 volts.
The sunroof control module understands the position of the sunroof glass based on the different input combinations through the sunroof limit switch soft stop signal and sunroof limit switch open vent signal circuits.

Power Sunroof Does Not Close
Perform the Initialization/Teach Process any time a new sunroof motor actuator is installed in the vehicle or any time an existing sunroof motor actuator is removed from the vehicle. Refer to Sunroof Motor/Actuator Initialization/Teach Process .

Oct 23, 2017 | Pontiac Cars & Trucks

1 Answer

Sunroof not closing


You must dismount the sunroof glass, and then run the open an close operation until the cables are lined up. You will know when. Then install the glass back. Hopefully the plastic track is not broken.

Oct 25, 2013 | 1996 Land Rover Range Rover

1 Answer

Hundai Elantra 2005 Dear Fixya, My sunroof opens


Try cleaning and lubricating all the sun roof glass element tracks. Use a light coating of white Lithium grease.

Jul 26, 2017 | Hyundai Cars & Trucks

1 Answer

Sunroof wont open but the switch makes a clicking sound


Check the sunroof motor track see if there is an instruction or maby something is off track

Jun 07, 2012 | 1996 Honda Civic

1 Answer

My old mercedes w115 220 d (1974) manual sunroof is not closing. I don't know if there is any part of the sunroof missing beacuse the car was on a major reability program and I forget the pieces of the...


There's not a heck of a lot to the manual sunroof. I suspect some sort of debris in the track.
First off to remove a sunroof you open it all the way, looking down from on top of the car you will see the two chrome tracks on either side. They are healed on by two screws (there is a third adjustment screw on each side - it is obviously different and not holding the track down - don't mess with it -- or perhaps this is your problem...)
Remove the screws and the top to the tracks (they will lift right off) then slide the sunroof mostly closed and lift it out.
Now look into the tracks - back into the roof. Is there anything there that ought to not be there? Remove it - this can be challenging since it's narrow - a shot van and the biggest pice of tubing that will fit in there might do it for you.
Lube up the track with silicone lube (oil or grease will stick to dirt) clean the 4 feet of the sun roof. Notice the two rollers at the back these love the sunroof in place within it's open and push the back up when closed. With the roof out check that they move easily when you turn the handle.
Now back to the car - notice the two adjustment screws, they lift or lower the back of the track - perhaps you turned them when you were removing it the first time. In any event if they are up too high the roof won't fit (the wheels pushing out will try to push the sunroof door out of the car) You can see the small wedge next to the track - the wheels will roll up this wedge to close the back of the roof - and it needs to be in a reasonable position.
Don't force it you risk breaking the handle, the connecting mechanism or those wheels and where are you going to get a new one?
So now you can put the sunroof door back into place. Slide it back and forth - it should move easily. Now try to close it. It should close easily if not try adjusting the wedges down (this adjustment should not have changed but I am assuming you inadvertently changed these while trying to remove the sunroof door - it you're certain that you did not do that then it's something else).
Good Luck,
Frank

Aug 03, 2011 | Mercedes-Benz 190-Class Cars & Trucks

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

The sunroof in my 99 bonneville is making a loud noise when i open or close it almost sounds like the motor may be going bad or gears are stripped and i know nothing about sunroofs can you help ?!?


The sunroof motor is located under the roof liner above the center of the rear seat. You will need to remove the headliner in order to access the motor and or track. Do you feel you're mechanically inclind to remove all electrical, sunvisors, side roof handles side trim etc. If not than repairing the motor or track maybe beyond your scope of work. If you are let us know and once done you can proceed to the next step.

Apr 12, 2010 | 1999 Pontiac Bonneville

3 Answers

SUNROOF PROBLEM ( TOYOTA PREVIA ) 1991


Depends on where you're located . I can fix or replace the sunroof...

Dec 01, 2008 | 1993 Toyota Previa

1 Answer

My sunroof has opened and now it won't close. Any clues?


You will have to remove the sunroof motor, and the sunroof glass. Then you can move the guide tracks seperately until they are in the closed position. Then you can put the glass and motor back in, remove the power source (fuse or disconnect wire harness) to prevent any accidental opening until you can get it fixed. Chances are that a guide track or cable is broken, this can be a costly fix. Do not take it to the dealership, they will only want to install a whole sunroof unit. Take it to a local shop that installs aftermarket sunroofs

Sep 08, 2008 | 1994 Jeep Grand Cherokee

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