Mercedes-Benz W126 electric sunroof faults
500 SEC
Why does the W126 electric sunroof go crooked and close poorly?
Often the plastic link on the driver's side between the sunroof and the liner has broken. The sunroof then tilts and slides under the liner. The plastic parts should be replaced at the same time; the motor and cables usually do not need to be touched.
Does the liner need to be removed when replacing the sunroof cable?
No, if only the cable is replaced: the ends are detached from the sunroof and from the tube behind the motor. An old cable sheath requires removing the liner. The instructions apply when the mechanism is similar to the sedan's.
How is the fabric liner of the C126 coupe's sunroof removed?
There are four plastic pins at the front edge of the liner. With the sunroof half open, pull the front edge down so the pins come loose. Pull the liner forward and open the sunroof fully, and the liner comes off intact.
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