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Home >> Mercedes Benz >> 2021 >> CLS450 4Matic >> Repair and Diagnosis >> Body & Frame >> Sun Roof/T-Top/Convertible Top >> Sliding Roof, Soft Top, Top Attachments - 257 Chassis >> Basic Knowledge >> Component Description For Sliding Roof Control Module - GF77.20-P-4108FR

Component Description For Sliding Roof Control Module - GF77.20-P-4108FR

Model 257, 290 

up to model year 2021 

with code 414 (Electric sunroof, glass version) 

Shown on model 257 

Fig 1: Sliding Roof Control Module Component Location - Model 257 Up To Model Year 2021 With Code 414
G14550205Courtesy of MERCEDES-BENZ USA

Location 

The sliding roof control module is located at the front left on the frame of the sliding roof.

Task 

The sliding roof control module has the following tasks:

Reading in of sensors and signals 

The input factors are read in via the following connections:

Direct line (internal) 

The sliding roof control module reads in the signals from the following sensors over direct lines:

Interior CAN 

The sliding sunroof control module reads in, among other things, the following signals via the interior CAN:

Evaluation of input factors 

The input factors that have been read in are evaluated by the integrated microprocessor and the relevant components are then actuated.

Actuation of components 

The sliding sunroof control module actuates the sliding sunroof motor (A98/1m1) via direct lines.

  Wiring diagram for sliding roof control module   PE77.20-P-2103-97XBA