S 65 AMG (221.179) V12-6.0L Turbo (275.982) (2008)
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Sunroof / Moonroof Motor: Description and Operation
GF77.20-P-5214SX Tilting/Sliding Roof System (SR) Drive Unit, Component Description
GF77.20-P-5214SX Tilting/Sliding Roof System (SR) Drive Unit, Component Description
- with CODE (414) Power glass tilting/sliding roof
- up to model year 08
Component Identification
Location
The roof system drive unit is located below the left headliner on the front roof frame.
Task
Drive for tilting/sliding roof (SR).
Design
The roof system drive unit includes the following components:
^
Roof motor (M12m1)
^
Roof system Hall sensor 1 (M12b1)
^
Roof system Hall sensor 2 (M12b2)
^
Transfer case
^
Temperature protection switch
Function
The direction of rotation of the roof system motor is determined by the polarity of the actuating voltage from the overhead control panel control unit
(N70)
The Hall sensors deliver signals to the overhead control panel control unit for position measurement and lock-up recognition. Moreover, the thermal
protection switch protects against overload.
