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

MODEL 212 as of 3/2/15 as of model year 2016 with CODE 505 (Radio 20 NTG5, not navigation-enabled) 

MODEL 212 as of 3/2/15 as of model year 2016 with CODE 522 (Audio 20 radio) 

Shown on model 212.0 with CODE 522 (Audio 20 radio) 

Fig 1: Radio - Shown On Model 212.0

Courtesy of MERCEDES-BENZ USA

Location 

The radio is centrally located in the instrument panel.

Tasks 

• Central control unit for the entertainment and communication systems integrated into the vehicle 
• Reading in of input signals as well as actuation of output media and system components 

Central control unit for the entertainment and communication systems integrated into the vehicle 

The radio provides the user with a structured and standard user interface for the following system components:

• Audio system (e.g. "Radio", "CD" (as well as MP3) and further multimedia devices)
• Telephony (with telephone book function)
• Internet
• - sound settings (e.g. "bass", "treble", "fader", "balance")
• - System settings (e.g. "brightness" and "contrast" of the audio/COMAND display)
• Navigation (with CODE 522 (Audio 20 radio) and CODE 357 (SD card navigation))

The user interface is shown on the Audio/COMAND display. The "Vehicle functions" menu can be used to display and control equipment-specific content and functions of additional systems (e.g. climate control, seat adjustments) on the Audio/COMAND display.

MODEL 212 as of 3/2/15

as of model year 2016

with CODE 357 (SD card navigation)

with CODE 522 (Audio 20 radio)

The navigation functions can be used via a voice control system integrated in the navigation system.

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

The radio sends and receives signals via the following connections:

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

CAN 

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

• Via the telematics CAN, the radio receives control signals from the Audio/COMAND control panel (A40/9) for example.
• Via the telematics CAN, the radio sends control signals to the Audio/COMAND display for example
• Via the interior CAN, the radio receives the signals of the left multifunction steering wheel button group (S110) and the right multifunction steering wheel button group (S111) from the instrument cluster (A1), for example
• Via interior CAN, the radio sends navigation displays to the instrument cluster for example.

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))

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 [ZV] and KEYLESS-GO antenna amplifier (A2/18) (input)
• FM 2 and DAB antenna amplifier (A2/19) (input)
• Hands-free system microphone (A67b1) (input)
• Multifunction antenna (A28/11), in vehicles with CODE 348 (Emergency call/assist system) via 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, gen. 2) and except CODE 810 (Sound system)) (input)
• Reversing camera (B84/3) (with CODE 218 (Reversing camera)) (input)
• Bluetooth® antenna (A2/91) (input and output)
• Multimedia connection unit (A90/5) (input and output)
• LVDS line (Low Voltage Differential Signal) for video data to the Audio/COMAND display (output)
• Wake-up 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)) (output)
• 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, gen. 2)) (output)

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
• High Definition (HD) radio tuner (with CODE 494 (USA version))
• 4 channel amplifier (except CODE 810 (Sound system))
• Electrical fuse for radio (A2f1) in the MQS 40 plug at the rear panel
• SD (Secure Digital) card reader (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))