Sunroof won't closed automatically all the way
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Newbie
Joined: Jul 2020
Posts: 5
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2005 C230
Sunroof won't closed automatically all the way
Whenever I press the button for the sunroof the close automatically, it gets about 60-70% of the way and then will stop, and roll back to all the way open. It started happening after the sunroof was blocked from closing so I'm assuming that was the cause of it, I'm just not sure how to go about fixing it or if I can fix it. I drive a 2005 C230 Kompressor Sedan.Edit: I forgot to add in the original post, I've resynced the sunroof and it still does it. All my other automatic windows work normally. I can also still close the sunroof, I just have to hold the button down all the way, it only stops when I press it once and it tries to close automatically.
Last edited by nickbelle9; Mar 9, 2021 at 09:57 PM.
Member
Joined: Jun 2018
Posts: 249
Likes: 44
From: San Antonio, TX
2005 C55 AMG
Since the reset didn't work, I'd clean the rails and lube with white lithium grease. It doesn't take much, but they don't like being dry.
Last edited by Spooky55; Mar 10, 2021 at 04:59 AM.
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CL500 w215
I have a CL500 and if it works the same......There is a sensor to prevent pinching and it has set limits in the programing. If the rails are dirty or if anything is causing the motor to draw too many amps in "auto", it will stop and open. My issue is when I got a new battery, the limits were set to "0" so it is always over the pinch sensor limit and won't move at all.
Working on that now. Could be I have a defective sensor or motor but I don't think so. I installed another overhead board from a salvage CL and it works perfectly but now the keyless go and the rain sensors do not work. Back to the old board. Why Mercedes doesn't make them interchangeable is maddening.
Working on that now. Could be I have a defective sensor or motor but I don't think so. I installed another overhead board from a salvage CL and it works perfectly but now the keyless go and the rain sensors do not work. Back to the old board. Why Mercedes doesn't make them interchangeable is maddening.
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CL500 w215
Sunroof UPC experiment
That doesn't work for me. I do have an observation and an experiment to relay....I got another upper control panel for another CL500 and swapped it out. The sunroof now works perfectly, but,
now the rain sensor and keyless go no longer work. The only error code with the OEM panel was the anti-pinch limit has been reached but the sunroof is free and easy to open/close, no tract issues etc.
I now know the sunroof tract and motor is functioning with the swapped UPC. My issue might be software related or UPC failure in the sensor no longer being read correctly. The sensors probably are not
defective as it works with another panel. I will have to break down and get a Star system hooked up to fix it so it might stay closed all summer. The more I mess with it, the more other issues come up.
I am glad MB does not have anything to do with the space program, our boys would be stuck up there in space with a broken plastic handle and a defective SAM.
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MBWorld Fanatic!
Joined: Dec 2003
Posts: 3,275
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From: BC, Canada
2003 C230K Coupe Orion Blue
The procedure is actually to open the sunroof all the way, let go, then hold the "open" command for another 2 seconds. Then close the sunroof until it's in the closed position, let go, then hold the "closed" position for 2 seconds. You might also have to do it for the "up" and "down" positions. Fiddle around with all 4 extreme positions and the sunroof should start working again.
If a cabin light (such as the dome) is on, you can actually see the light "dim" for a second while holding the button. Basically the car will try to move the sunroof (drawing juice away from the cabin light), realize it can't, then stop trying (the light then brightens again). At that point it has "learned" where the end of the travel is.
This actually applies to the window as well. Open or close the window all the way, let go, then hold "open" or "close" for 2 seconds. Then move the window to the opposite end of travel and repeat.
If a cabin light (such as the dome) is on, you can actually see the light "dim" for a second while holding the button. Basically the car will try to move the sunroof (drawing juice away from the cabin light), realize it can't, then stop trying (the light then brightens again). At that point it has "learned" where the end of the travel is.
This actually applies to the window as well. Open or close the window all the way, let go, then hold "open" or "close" for 2 seconds. Then move the window to the opposite end of travel and repeat.
Last edited by slammer111; May 23, 2021 at 08:56 AM.
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Newbie
Joined: Jan 2025
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MB sunroof
So I came back from vacation and my car was dead. Like really dead. When I finally got it started the sun roof didn’t want to work right. The button kinda does what it wants and it is a guessing game for which way is what. Like I push up to open it all the way down to close it back to go up… and it changes every time I start the car now. I am so confused. Fuse dirty tracks bad motor? Anything helps.
Last edited by Thatguy101; Jan 7, 2025 at 11:23 AM.
MBWorld Fanatic!
Joined: Jan 2024
Posts: 2,515
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From: DFW
SL63
So I came back from vacation and my car was dead. Like really dead. When I finally got it started the sun roof didn’t want to work right. The button kinda does what it wants and it is a guessing game for which way is what. Like I push up to open it all the way down to close it back to go up… and it changes every time I start the car now. I am so confused. Fuse dirty tracks bad motor? Anything helps.
Member
Joined: Jul 2024
Posts: 119
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From: SoCal
90 VW Corrado g60, 07 New Beetle Vert triple white & 09 Escalade ESV Plat LOL!
Had this occur with our 07 VW Vert Beetle. If battery dies when top is down, it won’t close all the way.
The limit switches need to be reset. VW does it by rolling windows all the way down at once w/ master switch, then back up.
I suspect MBZ has a similar procedure involving cycling the sunroof or windows to ensure they don’t self destruct themselves when closing.
The limit switches need to be reset. VW does it by rolling windows all the way down at once w/ master switch, then back up.
I suspect MBZ has a similar procedure involving cycling the sunroof or windows to ensure they don’t self destruct themselves when closing.
Last edited by Petethepug; Jan 8, 2025 at 08:02 PM.
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