Sound System Amplifier Control Unit, Basic Function - GF82.62-P-9890A

WARNING: This page is about a different car, the 2020 Mercedes-Benz SLC43 AMG, 2019 Mercedes-Benz SLC43 AMG, 2018 Mercedes-Benz SLC43 AMG, and 2017 Mercedes-Benz SLC43 AMG. However, it is still accessible from the selected car via links, so may be relevant.

Model 213, 238, 257 with engine 256

as of model year 2021

with code M016 (Updated engine)

except code 810 (Premium sound system)

except code 811 (High-End sound system)

Model 290 with engine 256

as of model year 2021

except code 810 (Premium sound system)

except code 811 (High-End sound system)

Model 297

with code 853 ("Midline" sound system)

with code MEF3 (AMG Entry variant with L battery + 4MATIC)

Model all (CAR)

with code 810 (Premium sound system)

Model all (CAR)

with code 811 (High-End sound system)

Model all with engine 139

except code 810 (Premium sound system)

except code 811 (High-End sound system)

General

The sound system amplifier control unit has the following functions:

Optimizing input signals using digital signal processing and sound optimization algorithms
Implementing audio parameters from the multimedia system
Amplifying the input signals
Distributing audio signals to the speakers
Adjusting volume to noise level
Generation of engine sound (equipment specific)
Engine sound reduction in vehicle interior (equipment specific)

Location

The sound system amplifier control unit is located in the trunk/load compartment under the floor or behind the side trim.

Function requirements

Circuit 30t ON
Electrical wake-up
Audio muting from telematics services control unit not active