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Roof System, Basic Function - GF77.20-P-9900A

Model All (4xWD) 

Model All (CAR) 

G16682593Courtesy of MERCEDES-BENZ USA

Sample illustration of sliding sunroof 

G16682594Courtesy of MERCEDES-BENZ USA

Sample illustration of panoramic sliding sunroof 

G16682595Courtesy of MERCEDES-BENZ USA

Sample illustration of soft top 

Overview 

This document contains information on:

General 

Different roof systems are installed depending on the body type and equipment:

Thanks to the roof systems, vehicles are flooded with daylight and they also provide a convenient option for ventilation.

Function 

The sliding sunroof (1), panoramic sliding sunroof (2) or soft top (3) opens or closes as a result of different actuation options and depending on the equipment installed.

Sliding sunroof 

A roof system in which the movable part is made from heat-insulating safety glass. The movable part is moved under the roof panel when the sliding sunroof (1) is opened.

Panoramic sliding sunroof 

A roof system that consists of several glass panels and a sliding sunroof panel and through which light and/or air can enter the vehicle interior. Depending on the vehicle, the sliding sunroof panel can be installed at the front end of the panoramic sliding sunroof (2) and a fixed, integrated glass panel can be installed at the rear end. The sliding sunroof panel can also be installed in the panoramic sliding sunroof (2), between 2 fixed, integrated glass panels.

Soft top 

Movable part of a roof system in a convertible or Roadster consisting of soft top canvas, soft top frame, soft top interior trim and potentially a rear-panel window.

The soft top (3) can be opened and closed.

  Further basic functions     
  Open/close sliding sunroof, basic function Model (car, 4xWD) GF77.20-P-9901A 
  Basic opening/closing soft top function Model 232
Model 236
Model 238.4 as of model year 2021
GF77.30-P-9900A