Basic Function Of Head Unit Operating Unit - GF54.21-P-2008A

WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2023 Mercedes-Benz CLA45 AMG, 2023 Mercedes-Benz CLA35 AMG, 2023 Mercedes-Benz CLA250, 2022 Mercedes-Benz CLA45 AMG, and 2022 Mercedes-Benz CLA35 AMG. However, it is still accessible from the selected car via links, so may be relevant.

Model All (CAR)

with code 448 (Touchpad)

Model 290

as of model year 2021

except code 446 (Touchpad only)

except code 448 (Touchpad)

Overview

This document contains information on:

General
Function requirements
Function
- Recording of control signals
- Interface between multimedia system control and switch panels of multimedia system

General

The head unit operating unit on the center console provides control options for the multimedia system and driving systems.

The head unit operating unit can be used as an alternative to the touchpad on vehicles with touchpad. The user selects on multimedia system control whether the head unit operating unit or the touchpad should be used as the central control element for the multimedia system.

Function requirements

Circuit 30t

Function

Recording of control signals

The head unit operating unit contains the audio/COMAND controller as a central control element. This allows the multimedia system to be operated by tilting, pressing and turning.

A back key and a button for the main menu and personal favorites support menu navigation.

Interface between multimedia system control and switch panels of multimedia system

The head unit operating unit is connected to the vehicle's network architecture and connected to the switch panels of the multimedia system.

This enables data exchange between the following components:

Multimedia system control
Left lower control panel
Right lower control panel
Upper control panel