Radio control panel, component description - GF82.60-P-3116GQA

MODEL 164.1 with CODE (510) Audio 20 with CD changer as of model year 2009/YoM 08 model refinement package 

MODEL 164.8, 251.0/1 with CODE (510) Audio 20 with CD changer as of model year 2009/YoM 08 

Shown on model 164.1 

Location 

The radio is located in the center of the instrument panel.

Task 

• Central operating and display unit for the entertainment and communication systems integrated into the vehicle 
• Reads in the controls and input signals 
• Evaluation of input factors 
• Actuates output media 

Central control and display device for entertainment and communications systems integrated into vehicle 

The radio provides the user with a structured and uniform interface.

Reads in the controls and input signals 

The input factors are read in via the following connections:

• Direct line 
• Controller Area Network (data bus/CAN bus) (CAN) 
• Media Oriented System Transport (MOST) 

Direct line 

• Circuit 30
• Circuit 31
• Telephone MUTE
• Left antenna amplifier module (A2/64) (model 164 with code (537) Digital radio)
• Right antenna amplifier module (A2/65) (model 251 with code (537) Digital radio)
• FM/AM/RRCL [FZV] antenna (A2/93a1), roof antenna module (A2/93) and FM rear window antenna amplifier (A2/19)
• Bluetooth antenna (A2/91)
• Handsfree system microphone group (A67b1)
• AUX input (access in glove compartment) (without code (518) Media interface)

CAN 

The radio is an interior CAN (CAN B) subscriber. It communicates with the following components, for example:

• Instrument cluster (A1)
• EIS [EZS] control unit (N73)
• Central gateway control unit (N93)

MOST 

Control and audio signals from the following control units:

• Media interface control unit (N125/1) (with code (518) Media interface)
• Amplifier for sound system (N40/3) (with code (810) Sound system)
• Digital Audio Broadcasting control unit (N87/3) (with code (537) Digital radio)

Evaluation of input factors 

The input values are processed in the radio.

Actuates output media 

The following direct output signals are possible:

• Audio Out to following speakers (without code (810) Sound system):
  • Left front door speaker (H4/5)
  • Right front door speaker (H4/6)
  • Left rear door speaker (H4/3)
  • Right rear door speaker (H4/4)
  • Left front door tweeter (H4/33)
  • Right front door tweeter (H4/34)
  • Left rear door tweeter (H4/35)
  • Right rear door tweeter (H4/36)
• Switch on and switch off signals for Bluetooth module (A34/7), with code (386) Mobile phone
  • Wake-up for MOST
• Provision of structured and uniform interface for the following system components:
  • Audio system (e.g. radio, CD (also MP3), AUX)
  • Communication system (e.g. telephone with telephone book function)
  • Tone settings (e.g. bass, treble, fader, balance)
  • System settings (e.g. brightness and contrast of display
  • Evaluation of signals from interior CAN
• Power supply for Bluetooth antenna, FM/AM/RRCL [FZV] antenna, roof antenna module and FM rear window antenna amplifier

Design 

Front view and button assignment 

Function 

The buttons on the radio are read in and made available to the integrated central computer. The button actuations are processed further in the central computer and transferred to the other system components via the MOST or the interior CAN in the form of a message. The radio is switched On or Off when the On/Off button on the radio is pressed. The volume is regulated by turning the volume setting button for each set audio source. The user can switch to the required system component by pressing the menu buttons.

6-disk CD changer 

The integrated CD changer can be used to play audio CDs (including in MP3 format).

	Cockpit Management and Data System (COMAND) control unit wiring diagram	Model 164	PE82.85-P-2101-99MAE
		Model 251	PE82.85-P-2101-99RAE