Moonroof Auto-Close Issue?
Thread Starter
Member
Joined: May 2005
Posts: 247
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From: Pasadena, CA
'12 C204 C250, '05 SLK350 (sold)
Moonroof Auto-Close Issue?
This just started happening today but when I close my moonroof with the auto (2nd click) function, it will close almost all the way, then bounce back to about half-open. I have to manually close it with the halfway-click manual function. Has anyone else experienced this? I had a similar issue on my W212 E350.
Super Member
Joined: Jan 2003
Posts: 675
Likes: 3
From: Dallas, TX
2018 GLS 550
do a reset on the autoclose function. here is a great writeup on it...
Windows, seats, mirrors, steering wheel position (easy entry/exit) and the like can be reset by running them fully in one direction, holding the switch at full travel for approximately 2 seconds (or longer), then running to the opposite limit, holding for about 2 seconds (or longer). It is not unusual to have to do this after the battery is disconnected. The positioning of many of these features is controlled by a Hall's Effect generator, a simple device that counts revolutions of a motor shaft, and it must be set to register the proper number of turns to reach both limits of travel.
Windows, seats, mirrors, steering wheel position (easy entry/exit) and the like can be reset by running them fully in one direction, holding the switch at full travel for approximately 2 seconds (or longer), then running to the opposite limit, holding for about 2 seconds (or longer). It is not unusual to have to do this after the battery is disconnected. The positioning of many of these features is controlled by a Hall's Effect generator, a simple device that counts revolutions of a motor shaft, and it must be set to register the proper number of turns to reach both limits of travel.
Member
Joined: Jan 2012
Posts: 180
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From: Sydney, Australia
C250 CDI coupe, Obsidian Black Vision Pack, Drive Assist Plus pack, Comfort Pack, Rev Camera
Happens every now and then. Check the roof all round for obstructions.
Also if you watch it close you will see the wind deflector not go down properly causing this.
Suggest you either move the deflector a few times manually or force it closed by holding the button.
Also if you watch it close you will see the wind deflector not go down properly causing this.
Suggest you either move the deflector a few times manually or force it closed by holding the button.
