Component description for the radio - GF82.60-P-3122FQM

MODEL 218 as of model year 2015 with CODE 505 (Radio 20 NTG5, not navigation-enabled) 

MODEL 218 as of model year 2015 with CODE 522 (Audio 20 radio) 

Shown on model 218.3 

Location 

The radio is integrated at the front in the center of the center console.

Tasks 

The radio has the following tasks:

• Control unit for entertainment and communication systems 
• Reading in of input signals as well as actuation of output media and system components 

Control unit for entertainment and communication systems 

The radio provides the user with a structured and uniform user interface for the entertainment and communication systems in the vehicle. The graphical display of the user interface is shown on the Audio/COMAND display.

Reading in of input signals as well as actuation of output media and system components 

The input factors are read in via the following connections:

• Media Oriented System Transport (MOST) 
• CAN 
• Ethernet 
• Direct line 

Media Oriented System Transport (MOST) 

The radio exchanges data with the following control units over MOST:

• Sound system amplifier control unit (N40/3) (with CODE 810 (Sound system))
• Tuner unit (A90/4) (with CODE 536 (SIRIUS satellite radio) or with CODE 537 (Digital radio (DAB)))

CAN 

The radio is a subscriber of the interior CAN (CAN B) and the telematics CAN (CAN A).

Ethernet 

The radio is connected to the diagnostic connector (X11/4) via the Ethernet.

Direct line 

The radio is equipped with the following direct connections:

• Circuit 30g
• Circuit 31
• FM 1, AM, CL and KEYLESS-GO antenna amplifier (A2/18) (model 218.3) or rear window antenna amplifier 1 (A2/71) (model 218.9) (input)
• FM 2 and DAB antenna amplifier (A2/19) (model 218.3) or FM 2, DAB and TV antenna amplifier (A2/19) (model 218.9) (input)
• Hands-free system microphone (A67b1) (input)
• Multifunction antenna (A28/11) (with CODE 522 (Audio 20 radio) with CODE 357 (Map navigation)), on vehicles with CODE 348 (Emergency call/assist system) over the Global Positioning System antenna splitter (A2/5) (input)
• Audio muting from the emergency call system control unit (N123/4) (with CODE 348 (Emergency call/assist system) and except CODE 810 (Sound system)) (input)
• Audio muting from the telematics services communications module (N112/2) (with CODE 350 (Ecall Europe emergency call system) and except CODE 810 (Sound system)) (input)
• Reversing camera (B84/3) (with CODE 218 (Reversing camera)) or 360° camera control unit (N148) (with CODE 501 (360° camera)) (input)
• Bluetooth antenna (A2/91) (input and output)
• Multimedia connection unit (A90/5)
• LVDS line (Low Voltage Differential Signal) for video data to the Audio/COMAND display (output)
• Wake-up line for MOST (output)
• Audio output (speaker) (except CODE 810 (Sound system)) (output)
• Switch-on signal and power supply for mobile phone contact plate (X237/1) (with CODE 386 (Comfort telephony))
• Microphone output to emergency call system control unit (with CODE 348 (Emergency call/assist system)) or to the telematics services communications module (with CODE 350 (Ecall Europe emergency call system)) (output)

The radio provides the following components with electrical voltage:

• Switching voltage on mobile phone contact plate (with CODE 386 (Comfort telephony))
• Supply voltage over signal line to following components: FM 1, AM, CL and KEYLESS-GO antenna amplifier (model 218.3) or rear window antenna amplifier 1 (model 218.9), FM 2 and DAB antenna amplifier (model 218.3) or FM 2, DAB and TV antenna amplifier (model 218.9), multifunction antenna

Shown on radio with CODE 522 (Audio 20 radio) 

Body 

The following components are integrated in the radio:

• Arithmetic unit
• Single drive for CDs
• Searchable database for audio files, including cover art and cover flow
• Bluetooth® receiver
• 3 radio tuners for AM reception, FM phase diversity and separate FM tuner function for data services, e.g. traffic messages
• 4 channel amplifier (except CODE 810 (Sound system))
• Electrical fuse for radio (A2f1) in the combination connector at the rear panel
• SD card reader (Secure Digital) (with CODE 522 (Audio 20 radio))
• GPS receiver (Global Positioning System) (with CODE 522 (Audio 20 radio))
• Gyro sensor (2D) (with CODE 522 (Audio 20 radio))
• Traffic data recorder for TMC, TMCpro or Real Time Traffic Data (RTTD) (with CODE 522 (Audio 20 radio))
• High Definition (HD) radio tuner (with CODE 522 (Audio 20 radio) and CODE 494 (USA version))

Cockpit Management and Data System (COMAND) control unit wiring diagram

PE82.85-P-2101-97XAF