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Home >> Mercedes Benz >> 2023 >> GLA45 AMG >> Repair and Diagnosis >> Body & Frame >> Sun Roof/T-Top/Convertible Top >> Sliding Roof, Soft Top, Top Attachments -- 247 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) 

Overview 

This document contains information on:

Sample illustration for vehicles with separate drive unit 

G16051754Courtesy of MERCEDES-BENZ USA

Sample illustration for vehicles with integrated drive unit 

G16051755Courtesy of MERCEDES-BENZ USA

General 

Depending on the vehicle, the panoramic sliding sunroof drive unit (1) is either a separate component part or forms a unit together with the panoramic sliding sunroof control unit.

The panoramic sliding sunroof drive unit (1)/panoramic sliding sunroof control module (2) is located on the front roof frame.

Vehicles with separate drive unit 

The separate panoramic sliding sunroof control unit actuates the electric motor for the panoramic sliding sunroof (1.1) in the panoramic sliding sunroof drive unit (1).

Vehicles with integrated drive unit 

The panoramic sliding sunroof control unit in the panoramic sliding sunroof control module (2) actuates the electric motor for the panoramic sliding sunroof (1.1).

Function 

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

The redirecting transmission of the panoramic sliding sunroof converts the rotating motion of the electric motor for the panoramic sliding sunroof (1.1) into a longitudinal motion. This changes the position of the sliding sunroof panel of the panoramic sliding sunroof. The installed Hall sensors record the motor speed and the position of the sliding sunroof panel.

  Function schematics     
  Function schematic, open/close panoramic sliding sunroof Model 118, 167.3, 177, 243, 247 with code 413 (Panoramic sliding sunroof/glass roof) PE77.21-P-2500-97A 
    Model 167.1/9 with code 413 (Panoramic sliding sunroof/glass roof) Model 213, 238.3 as of model year 2021 with code 413 (Panoramic sliding sunroof/glass roof) PE77.21-P-2500-97B
    Model 223 with code 413 (Panoramic sliding sunroof/glass roof) PE77.21-P-2500-97C
    Model 206, 214, 236, 254 with code 413 (Panoramic sliding sunroof/glass roof) PE77.21-P-2500-97D
    Model 294, 295, 296, 297 with code 413 (Panoramic sliding sunroof/glass roof) PE77.21-P-2500-97E
  Component descriptions     
  Panoramic sliding roof system drive unit, component description Model 223 with code 413 (Panoramic sliding sunroof/glass roof) GF77.20-P-5213A
    Model 243 with code 413 (Panoramic sliding sunroof/glass roof) GF77.20-P-5213B
    Model 206 with code 413 (Panoramic sliding sunroof/glass roof) GF77.20-P-5213C
    Model 297 with code 413 (Panoramic sliding sunroof/glass roof) GF77.20-P-5213D
    Model 296 with code 413 (Panoramic sliding sunroof/glass roof) GF77.20-P-5213G
    Model 254 with code 413 (Panoramic sliding sunroof/glass roof) GF77.20-P-5213H
    Model 214 with code 413 (Panoramic sliding sunroof/glass roof) GF77.20-P-5213K
    Model 118, 177, 247 as of model year 2023 with code 413 (Panoramic sliding sunroof/glass roof) GF77.20-P-5213L
    Model 294 with code 413 (Panoramic sliding sunroof/glass roof) GF77.20-P-5213N