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Home >> Mercedes Benz >> 2020 >> CLS450 Base >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Electrical System - Body - 257 Chassis 1 Of 8 >> Basic Knowledge >> Ambiance Illumination Control Unit, Component Description - GF82.20-P-5161FR

Ambiance Illumination Control Unit, Component Description - GF82.20-P-5161FR

Model 257, 290 

up to model year 2021 

with code 891 (Premium ambiance illumination) 

G14550257Courtesy of MERCEDES-BENZ USA

Location 

The ambient lighting control unit is located in the front passenger footwell.

Task 

The ambient lighting control unit has the following tasks:

Reading in of signals 

The signals are read in by the ambient lighting control unit over the interior CAN (CAN B).

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 components are actuated via the following lines:

  Wiring diagram of ambient lighting control unit Model 257 up to model year 2021 with code 891 (Premium ambiance illumination) PE82.20-P-2101-97XBA
    Model 290 up to model year 2021 with code 891 (Premium ambiance illumination) PE82.20-P-2101-97XBB