W124 Coupe Seized sunroof

Discussion in 'Bodywork' started by RogerAllanson, Jan 18, 2020.

  1. RogerAllanson

    RogerAllanson New Member

    Messages:
    6
    Joined:
    Jan 15, 2020
    Location:
    Bolton, Lancashire
    Car:
    MB 320 E class coupe 1994 (w124 diesel)
    Hello, does anyone have any suggestions for freeing a seized sunroof. I can hear the motor whirring but it ain't budging. As it holds water which it deposits in my lap as I set off I need access to the drainage channels to clean them out. Can anyone help? Regards Roger
     
  2. Teego

    Teego Hardcore MB Enthusiast

    Messages:
    521
    Joined:
    Feb 2, 2018
    Location:
    Derbyshire
    Car:
    CLS55 AMG
    Check your handbook. I think you should have a special key to open it manually.
     
  3. grober

    grober MB Club Veteran

    Messages:
    27,630
    Joined:
    Jun 22, 2003
    Location:
    Perth, Scotland
    Car:
    W204 C200CDI Estate
  4. OP
    OP
    RogerAllanson

    RogerAllanson New Member

    Messages:
    6
    Joined:
    Jan 15, 2020
    Location:
    Bolton, Lancashire
    Car:
    MB 320 E class coupe 1994 (w124 diesel)
    Hello Teego,

    Thanks for the response. Unhappily I did not get a manual with the car but I can't see a key hole either. Where should I be looking? Regards Roger
     
  5. DSM10000

    DSM10000 MB Club Veteran

    Messages:
    6,770
    Joined:
    Jul 12, 2011
    Location:
    Near Salisbury
    Car:
    E32O CDi Sport, MX5 1.8 Sport, RR 4.2 SC
    Usually under a trim panel at the front of the roof.
     
  6. grober

    grober MB Club Veteran

    Messages:
    27,630
    Joined:
    Jun 22, 2003
    Location:
    Perth, Scotland
    Car:
    W204 C200CDI Estate
    The place where you manually wind the sunroof is USUALLY in the boot behind some side trim but is really there in case of electric motor failure. It still relies on the drive cable working. The fact that the motor is running probably means the operating cable mechanism is broken or detached - this is potentially a much bigger problem to which there is no easy fix. I suggest you take a look at the links in the thread I posted. To assess your next move requires that you understand what you are dealing with before deciding what to do.
    77 Roofs
    specifically
    http://www.w124-zone.com/downloads/MB CD/W124/w124CD2/Program/Chassis/77-140.pdf
     
    merc85 likes this.
  7. simoncollinge1

    simoncollinge1 New Member

    Messages:
    10
    Joined:
    Dec 14, 2018
    Location:
    Denbighshire
    Car:
    E320
    Hi is there a link to similar instructions for a 211 e320 sunroof 2004? Thanks
     
  8. grober

    grober MB Club Veteran

    Messages:
    27,630
    Joined:
    Jun 22, 2003
    Location:
    Perth, Scotland
    Car:
    W204 C200CDI Estate
    Unfortunately no---here's how to open and close the roof manually.
     
  9. simoncollinge1

    simoncollinge1 New Member

    Messages:
    10
    Joined:
    Dec 14, 2018
    Location:
    Denbighshire
    Car:
    E320
    Thanks
    Was ok with using that spanner
    Main problem is although the motor works the roof opens with a grating noise and stops half way. Then closes ok so would suggest motor ok but problem with the “rails” ?
     
  10. Teego

    Teego Hardcore MB Enthusiast

    Messages:
    521
    Joined:
    Feb 2, 2018
    Location:
    Derbyshire
    Car:
    CLS55 AMG
    I had exactly this syndrome. Easy fix. You need to clean and lube the running gear. If you can get the roof open manually use a hoover, toothbrushes etc to remove major crud. Then use WD40 and lint-free cloth to deep(ish) clean. When dry apply a very small amount of light oil to the the runners. I used Scottoil chain lube which was hanging around. Now open and close the roof many time to spread the oil and check for any snaggy spots.
    Did mine 18 months ago and it's been perfect ever since.
     
  11. OP
    OP
    RogerAllanson

    RogerAllanson New Member

    Messages:
    6
    Joined:
    Jan 15, 2020
    Location:
    Bolton, Lancashire
    Car:
    MB 320 E class coupe 1994 (w124 diesel)
    Hello everyone, Thanks for the help. I have found the unwind point in the boot. I hope to have it sorted. Regards Roger
     
    grober likes this.
  12. MrGreedy

    MrGreedy Hardcore MB Enthusiast

    Messages:
    182
    Joined:
    Jan 13, 2020
    Location:
    Leicestershire
    Car:
    Insignia diesel :-( and w212 E350 CDI :-)
    I believe the electric sunroof should be an annual service item. Clean, and use MB 'special grease' :confused:

    With my w203, I neglected it for 3 years, and stopped using it for another year or so because I was worried about it sticking open. It was getting slower and slower, and would often move a small amount and then stop. I didn't want to push it until the clicking started, which would indicate something breaking probably.

    I then decided to sort it. Found an extract from a MB service manual online for the job. Used a very liberal spray application silicone lube in a can (a bit like WD40), which seemed to get it moving a bit. Kept spraying up and down the rails, cleaning and moving and exposing more and more. Cleaned everything I could get to, including popping up the service bits on the rails. Cleaned all existing grease off.
    Finally, having wiped it down mostly dry, I used a white silicone grease (available off the bay of dreams for about a fiver), which I read at the time was probably pretty close to the MB special grease.

    Just wiped down the rails with a clean cloth and reapplied clean silicone grease every year until I sold it. Never had a problem after that and it work like new.

    Good luck.
     
  13. OP
    OP
    RogerAllanson

    RogerAllanson New Member

    Messages:
    6
    Joined:
    Jan 15, 2020
    Location:
    Bolton, Lancashire
    Car:
    MB 320 E class coupe 1994 (w124 diesel)
    Thank you Mr Greedy, Roger
     
  14. simoncollinge1

    simoncollinge1 New Member

    Messages:
    10
    Joined:
    Dec 14, 2018
    Location:
    Denbighshire
    Car:
    E320
    Excellent, thanks. Was lazy (and wet) so asked my local garage (Kenrick Motors Llangollen) to do the job and all good.
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.