2009 G55 Sunroof - Will tilt but not close
Thread Starter
Junior Member
Joined: Aug 2019
Posts: 16
Likes: 1
G55, SL55
2009 G55 Sunroof - Will tilt but not close
So I have read countless threads on various forums but none address my particular issue.
The sunroof will tilt up but then nothing (will not open fully, close... just tilt up). I have to close the roof manually using the manual winder in the rear panel. I'm assuming since it it tilts that the motor is not the issue. I do hear a clicking from the switch/relay in the overhead control unit when trying to close or open the roof fully. Could it be the overhead control unit? My auto light/rain sensor is also not working, which I know is controlled by that unit.
I have a icarsoft diagnostics tool, the only error it throws up is the rain/light sensor having an open circuit (same control unit)
Any ideas?
The sunroof will tilt up but then nothing (will not open fully, close... just tilt up). I have to close the roof manually using the manual winder in the rear panel. I'm assuming since it it tilts that the motor is not the issue. I do hear a clicking from the switch/relay in the overhead control unit when trying to close or open the roof fully. Could it be the overhead control unit? My auto light/rain sensor is also not working, which I know is controlled by that unit.
I have a icarsoft diagnostics tool, the only error it throws up is the rain/light sensor having an open circuit (same control unit)
Any ideas?
Junior Member
Joined: Dec 2015
Posts: 30
Likes: 0
2008 G55 AMG
Interesting. My sunroof opens under its own power - one touch and it goes all the way - then doesn't close or tilt. If I wind it back manually it moves fine - same resistance back and forth. Possibly the controller? I'll bookmark this and see how you go.
Junior Member
Joined: Dec 2015
Posts: 30
Likes: 0
2008 G55 AMG
Is the controller the unit on the roof? If that what is it is I found this to buy
https://www.ebay.co.uk/itm/223499626347
https://www.ebay.co.uk/itm/223499626347
Thread Starter
Junior Member
Joined: Aug 2019
Posts: 16
Likes: 1
G55, SL55
That's the one I was planning to buy. I'm pretty certain the control unit sits in there.
Just make sure the Hella part number below matches your unit. I think there's a few variations, although part of the code may be colour.
Just make sure the Hella part number below matches your unit. I think there's a few variations, although part of the code may be colour.
Newbie
Joined: Dec 2020
Posts: 1
Likes: 0
Mercedes G55
Winder
Where abouts is the manual Winder? Mine is doing exactly the same
thanks
Winder?
thanks
So I have read countless threads on various forums but none address my particular issue.
The sunroof will tilt up but then nothing (will not open fully, close... just tilt up). I have to close the roof manually using the manual winder in the rear panel. I'm assuming since it it tilts that the motor is not the issue. I do hear a clicking from the switch/relay in the overhead control unit when trying to close or open the roof fully. Could it be the overhead control unit? My auto light/rain sensor is also not working, which I know is controlled by that unit.
I have a icarsoft diagnostics tool, the only error it throws up is the rain/light sensor having an open circuit (same control unit)
Any ideas?
The sunroof will tilt up but then nothing (will not open fully, close... just tilt up). I have to close the roof manually using the manual winder in the rear panel. I'm assuming since it it tilts that the motor is not the issue. I do hear a clicking from the switch/relay in the overhead control unit when trying to close or open the roof fully. Could it be the overhead control unit? My auto light/rain sensor is also not working, which I know is controlled by that unit.
I have a icarsoft diagnostics tool, the only error it throws up is the rain/light sensor having an open circuit (same control unit)
Any ideas?
Thread Starter
Junior Member
Joined: Aug 2019
Posts: 16
Likes: 1
G55, SL55
It's been a while but if I remember correctly.... If you open your back door/Boot, there's a panel to your left that you can remove and behind you will find the motor. Use a wrench or Allen key to wind the motor manually.
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