Question about 1998 Mercedes-Benz M-Class

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My 1998 ML320 sunroof won't fully close. - 1998 Mercedes-Benz M-Class

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  • gardsimms Jul 11, 2010

    the sunroof on my MB ML320 won't fully close. the problem appears to be with the interior panel because it won't open manually anymore

  • gardsimms Jul 11, 2010

    it's not solid plastic by the way

  • gardsimms Jul 11, 2010

    No, it's still glued. the bottom part is sticking further forward than the glass portion. Is that normal?

  • gardsimms Jul 11, 2010

    In a normal situation, i can manually open the interior door without opening the glass door. I also have the option of using the overhead switch allowing both doors to retract. what is happening now is that I cannot open the plastic and felt (interior) door alone but I must use the switch to open both. When trying to close the doors, both will come forward, however, the glass door will not going far enough to seal, the bottom door seems to stop it. Therefore, when it rained two days ago, water came through the sunroof and soaked the interior. does this make sense?

  • gardsimms Jul 11, 2010

    Just to add on......the plastic and felt door can be opened individually to create the "moonroof" effect.

  • gardsimms Jul 11, 2010

    No, this problem just started. I recall that the last time the sunroof was opened and I closed it, I do remember hearing strange noises but I didn't know that the roof was not fully closed - not until the recent rain.

  • gardsimms Jul 11, 2010

    Yes. both my husband and I tried several scenarios to try to figure out what was going on. this is why I went online and am trying to speak with someone who has more knowledge that we do. We opened and closed the roof quite a few times and, obvioulsy, could not figure it out.

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  • Mercedes-Benz Master
  • 6,826 Answers

Check to see if there are any blockages in the channel or any places to lubricate with silicon or dry lubricant spray.

Posted on Jul 11, 2010

  • 11 more comments 
  • gardsimms Jul 11, 2010

    we've done that. the problem seems to be with the interior panel which can be operated independently of the glass portion of the sunroof

  • Duane Wong
    Duane Wong Jul 11, 2010

    Does the interior panel have any felt on it that may be delaminating?



    Or is it solid plastic?

  • Duane Wong
    Duane Wong Jul 11, 2010

    Do you have a diagram of the panel in question?

  • gardsimms Jul 11, 2010

    what is "delaminating?"

  • Duane Wong
    Duane Wong Jul 11, 2010

    delaminating is when a glued on part is becoming unglued.

  • Duane Wong
    Duane Wong Jul 11, 2010

    I'm not sure, without seeing a diagram and a picture of your sliding door whether it is normal or not for the bottom door to protrude further forward.



    I think that sometimes it may interlock with something and be normal, but not sure on that one.



    What materials do you think it is made of if not solid plastic?

  • Duane Wong
    Duane Wong Jul 11, 2010

    It does make sense now that you explain it that way.



    So, you have two doors that seem to be sticking together, then.



    And, the sunroof/moon roof is leaking.



    And, it didn't do this when it was newer, or when you purchased the vehicle, I presume.

  • Duane Wong
    Duane Wong Jul 11, 2010

    Have you looked at the top of the vehicle when closing the sunroof(s) to see where exactly they are sticking together? This might give you a clue as how to fix this problem.



    You may need an assistant to operate the sunroof from below as you look from above the sunroof.

  • Duane Wong
    Duane Wong Jul 11, 2010

    If you can't fix the problem easily with the existing part, you may try a salvage yard for Mercedes Benz vehicles that might have parts for the unit that have become damaged.



    You said you heard some funny clicking sounds before the rain got your interior wet.



  • Duane Wong
    Duane Wong Jul 11, 2010

    I wish you luck in fixing this problem, properly.



  • Duane Wong
    Duane Wong Jul 11, 2010

    You see, the problem, I think, based on your description, is in the channel part. There may be something sticking in the area you cannot see from above or below.



    That would cause the doors to stick together physically just due to friction.



    I suspect there are broken parts inside that makes this problem happen, most likely in the channels.



    But, without seeing a diagram, it's kind of tough to determine this.



    That's why I would suggest going to a salvage yard to see if you can get one second hand.



  • Duane Wong
    Duane Wong Jul 11, 2010

    In addition, I would say, that I might take it to the dealer to see what they have to say.

    It might be a situation where parts are no long available, I warn you, on a vehicle over 10 years old.

    That's the way it is with General Motors anyway.

  • Duane Wong
    Duane Wong Jul 11, 2010

    I hope this helps to give you more avenues to repair the sunroof/moonroof problem on your Mercedes Benz.



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How do you reset sunroof in a 2001 Monte Carlo with 3400 model I


check fuse and relay if good than possible motor ot track problem their should be a mechanical bypass that will let you close it if stuck open the following information is courtesy of monte carlo forum
To check the condition of your original sunroof guides:
  1. Gl*** in closed position.
  2. Locate & remove 3 torx bolts on each side of sunroof glass. Lift glass out of sunroof opening & set aside in a safe place.
  3. Locate "J" shaped cover plate at front of sunroof track assembly. Remove 2 torx bolts from each cover plate.
  4. Lift up bracket to remove.
  5. Inspect the plastic guides on each side. The sunroof cables attach to guides on front outer corner. Inspect this area closely for damage.
  6. Do not operate the sunroof with the J plates removed.
Troubleshooting:
If the sunroof guides are not broken & the glass is a uniform height along the rear edge your problem may be a stripped gear inside the motor. The motor has a manual override:
  1. Get access to the motor by removing the map light/switch console or lowering the front of the headliner.
  2. Insert a large standard screwdriver into the nylon bushing at the center of the motor hub. Push up & turn the screwdriver to manually move the sunroof glass. If the unit will fully open & close manually, you most likely only need a replacement motor.

If your sunroof is stuck in the open position follow these steps to get it closed:
  1. Remove the glass.
  2. Try to close the unit without the glass. Many times one side will still be operational and close correctly.
  3. Try to slide the inoperable lift arm forward. If it moves, slide it forward until it stops.
  4. You now need to slide the original plastic guide forward to lower the arm to the closed position. Using a standard screwdriver, push it forward. The lift arm should begin to lower.
  5. If the lift arm will still not fully lower, remove the J plate as explained above, sometimes the sunroof cable will need to be lifted up to allow the guide to fully slide forward.
  6. Reinstall glass.

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1 Answer

2001 cadillac deville sunroof open and want close


Check the RAP fuse in the rear fuse box , this fuse powers the sunroof control module ! Fuse Block - Rear , Left rear of the passenger compartment, under the rear seat .
The sunroof module contains the logic for the opening and the closing of the sunroof. The sunroof motor assembly contains the reversible DC drive motor, the gear train, and the limit switch.
The sunroof module determines the sunroof motor direction based on inputs received from the overhead console sunroof switches. When the ignition switch is in the ON position or when retained accessory power (RAP) is active, voltage is applied to the sunroof module via the RAP relay. For a description and operation of the RAP system, refer to Retained Accessory Power (RAP) Description and Operation in Retained Accessory Power. The sunroof module controls the sunroof motor direction by changing the polarity of the applied voltage. The sunroof module remembers the sunroof position whenever the ignition switch is turned to the OFF position. The limit switch is used as an input to the sunroof module to indicate that the glass is fully closed, or in the comfort stop positions. The limit switch is grounded when the sunroof glass is in the fully closed or comfort stop positions, otherwise it is open.
The SLIDE CLOSE mode is initiated by moving and holding the sunroof slide switch (ROOF) forward. This applies a ground provided from the sunroof limit switch low reference circuit to the sunroof switch close vent signal input of the sunroof module. The sunroof module controls voltage to the control circuits of the sunroof motor. The sunroof motor will run until the limit switch contacts are closed. The closing of the limit switch will apply the sunroof limit switch low reference circuit to the sunroof limit switch soft stop signal circuit to the sunroof module, indicating the flush closed position has been reached. As the sunroof is approaching the close position the sunroof glass will force the wind deflector downward.
You need to have a factory scan tool hooked up an have it checked for DTC'S in the sunroof control module ! a code reader will not do this , a code reader will only check the engine codes for OBD 2 .
Important: The following must be completed before using the symptom tables.
  1. Perform Diagnostic System Check - Power Sunroof in order to verify that all of the following are true:
  2. ?€¢
    No DTCs are set.


    ?€¢
    The control modules can communicate via the serial data link.

  3. Review the system operation in order to familiarize yourself with the system functions. Refer to Sunroof Description and Operation
your better off taking to the dealer !

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1 Answer

2000 Tahoe sunroof won't fully close


Is there any debris in the track of the window especially towards the front. Thew clicking sound you are hearing may be worn gears in the drivve assembly of the window/power roof mechanism. Is there a limit switch for the sunroof? This may be bad also. Check the easy stuff first and get back with me.

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1 Answer

My sunroof won't close


Some sunroofs have a open switch like the drivers window. You push it and the window will open automaticly. The button on your sunroof could be jammed so even though you can close it as soon as you release it, it will auto open on it's own.

Sep 25, 2012 | 2003 Toyota Corolla

1 Answer

Sunroof on 1998 chevy cavalier z24 won't close all the way


It can be faulty motor or loose wiring issue or faulty /weak sunroof controlling switch or there is some blockage for sunroof to come down to close or sunroof out of its track the headliner is out of its way.There re many possibilities.All this basics needs to be checked.For further troubleshooting,go through this help link:----
Click the link mentioned below:------
How to Manually Close the Sunroof ? http://howtobyme.blogspot.in/2012/05/how-to-manually-close-sunroof-on-2001.html

-------------
Sunroof Stuck open? http://howtobyme.blogspot.in/2012/05/2001-lexus-is300-sunroof-stuck-open.html

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How to manually close Sunroof on Navigator? http://technoanswers.blogspot.com/2012/01/how-to-manually-close-sunroof-on-2000.html

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This will help.
Thanks.

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How to set powered sunroof open / close limits?


These limits are not adjustable.

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Electric sunroof stuck open can it be closed manually


THE ELECTRIC DRIVE SYSTEM FOR POWER SUNROOF IS NOT ADJUSTABLE.DONT REMOVE THE SUNROOF MOTOR UNLESS THE SUNROOF IS COMPLETELY CLOSED.OTHERWISE A NEW MOTOR WILL HAVE TO BE INSTALLED AND TIMED WITH A TOOL THAT COMES WITH THE NEW MOTOR.THE GLASS PANEL CAN BE ADJUSTED.OPEN THE INTERIOR SUNSHADE ALL THE WAY BACK AND OPERATE THE SUNROOF UNTIL FULLY CLOSED.THERE ARE THREE GLASS MOUNTING SCREWS ON EACH SIDE OF THE SUNROOF OPENING.INSIDE THE VECHICLE LOOSEN THE SCREWS SET THE FRONT EDGE OF THE GLASS TO BE JUST 1MM BELOW THE SURFACE OF THE ROOF.ADJUST THE GLASS AT THE REAR EDGE TO BE JUST ABOVE 1MM THE ROOF AT THE REAR TIGHTEN THE SCREWS.

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1 Answer

Have a benz 01 ml320, with leaking sunroof drain on


Open up the sunroof and try to unclog the drainage. You will see this from the inside of the ML by opening the whole sunroof and stickin your hear thru. On the drivers side you will see a drainage whole similar to the passenger side. Mine did the same thing and unclogged it with a straw. ljsloan@gmail.com

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1 Answer

How do i manually close a sunroof for a mitusbishi montero after the sunroof motor fails?


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.

Access seems to be just above the sunroof switch.

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