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Home >> Mercedes Benz >> 2019 >> GLC300 Base >> Repair and Diagnosis >> Body & Frame >> Sun Roof/T-Top/Convertible Top >> Sliding Roof, Soft Top, Top Attachments - 253 Chassis >> Basic Knowledge >> Panoramic Sliding Sunroof Drive Unit, Basic Function - GF77.21-P-2002A

Panoramic Sliding Sunroof Drive Unit, Basic Function - GF77.21-P-2002A

Model all (CAR) 

with code 413 (Panoramic sliding sunroof/glass roof) 

General 

Depending on the vehicle, the panoramic sliding sunroof drive unit is either a separate component part or forms a unit together with the panoramic sliding sunroof control unit.

Vehicles with separate drive unit 

Fig 1: Panoramic Sliding Roof Motor and Panoramic Sliding Roof Drive Module Components Location - in Model 253 w/ Separate Drive Unit and code 413 (Panoramic sliding sunroof/glass roof)
G12941143Courtesy of MERCEDES-BENZ USA

Vehicles with integrated drive unit 

Fig 2: Panoramic Sliding Roof Motor and Panoramic Sliding Roof Control Module Components Location - in Model 253 w/ Integrated Drive Unit and code 413 (Panoramic sliding sunroof/glass roof)
G12941144Courtesy of MERCEDES-BENZ USA

Location 

The panoramic sliding sunroof drive unit or the panoramic sliding sunroof control module is located on the front roof frame.

Task 

Vehicles with separate drive unit 

The separate panoramic sliding sunroof control unit actuates the panoramic sliding sunroof motor in the panoramic sliding sunroof drive unit.

Vehicles with integrated drive unit 

The panoramic sliding sunroof control unit in the panoramic sliding sunroof control module actuates the panoramic sliding sunroof motor.

Structure 

The following elements are integrated in the panoramic sliding sunroof drive unit: