Operation CHARM: Car repair manuals for everyone.
Home >> Mercedes Benz >> 2012 >> E 350 4MATIC Wagon (212.288) V6-3.5L (276.952) >> Repair and Diagnosis >> Accessories and Optional Equipment >> Cellular Phone >> Description and Operation >> GF82.70-P-2019FL Mercedes-Benz Contact, Function

GF82.70-P-2019FL Mercedes-Benz Contact, Function



GF82.70-P-2019FL Mercedes-Benz Contact, Function
- except CODE (498) Japan version
- except CODE (494) USA version


Function requirements
^ Circuit 30g or circuit 15R ON
^ One mobile phone network is available in sufficient strength and quality
^ Mobile phone system operating error-free
^ Mobile phone and "audio unit" switched on
^ Compatible mobile phone inserted into mobile phone cradle (A34/15) which is connected to the Bluetooth module (A34/7) (with code (386) Comfort telephony) or Bluetooth-compatible mobile phone in the vehicle and authorized at the "audio equipment" (basic telephony)
^ Correct Personal Identification Number (PIN) entered, if set on the mobile phone
^ Enabled Subscriber Identification Module (SIM) card inserted in mobile phone
^ Telephone number of the service center entered as a fixed, reserved telephone book entry in the telephone book or in the address book of the "audio unit" or in the telephone book of the mobile phone

Depending on the equipment installed one of the following control units will be installed, hereafter referred to as the "audio unit":
- Radio (A2) (with code (523) MB Audio 20 radio or with code (510) Audio 20 with CD changer)
- Radio with auto pilot system (A2/56) (with code (525) MB Audio 50 APS radio or with code (511) Audio 50 APS with DVD changer)
- COMAND controller unit (A40/3) (with code (527) COMAND APS with single DVD drive (with navigation) or with code (512) COMAND APS with DVD changer)

For a Bluetooth-compatible mobile phone which is authorized on the audio unit to be operated in the vehicle, the mobile phone must support Hands Free Profile (HFP) 1.0 or 1.5. More information under:
- www.mercedes-benz-mobile.com

The entries in either of the two "books" below are always available; they can only be removed by deleting:
- Phone book (with code (523) MB Audio 20 radio or with code (510) Audio 20 with CD changer)
- Address book (with code (525) MB Audio 50 APS radio, with code (511) Audio 50 APS with DVD changer, with code (527) COMAND APS with single DVD drive (with navigation) or with code (512) COMAND APS with single DVD changer)

With the basic telephony, it is possible to gain read access to the telephone book of the mobile phone, if the mobile phone supports the Bluetooth profile Phone Book Access Profile (PBAP). Otherwise, the entries in the mobile phone's phone book can only be transmitted to the audio equipment via "vCards".

General
The "Mercedes-Benz Contact" function provides user-friendly access to the services rendered by Mercedes-Benz Services by means of a fixed, reserved telephone book entry in the telephone book or in the address book of the "audio unit" or the telephone book of the mobile phone. The "Mercedes-Benz Contact" function uses the hands-free system (via Bluetooth) and supports the service acceptance process at the Service Center by voice communication with synchronous transfer of the vehicle data.

The "Mercedes-Benz Contact" function consists of the following subfunctions:
^ Selecting fixed, reserved telephone book entry function sequence via the buttons on the mobile phone
^ Selecting fixed, reserved telephone book entry function sequence via the telephone buttons or the keypad on the audio equipment
^ Function sequence for selection of permanently reserved phone book entry using Audio/COMAND control panel (A40/9)
^ Function sequence for selection of permanently reserved phone book entry using the left multifunction steering wheel button group (S110) and right multifunction steering wheel button group (S111)
^ Selecting fixed, reserved telephone book entry function sequence via the voice control system (VCS [SBS]) (with code (511) Audio 50 APS with DVD changer, with code (527) COMAND APS with single DVD drive (with navigation) or with code (512) COMAND APS with DVD changer)
^ Establish telephone call in handsfree mode and transmit data to the service center function sequence
^ Terminate call function sequence using mobile phone buttons
^ Terminate call function sequence over telephone buttons or keypad on audio equipment
^ Terminate call function sequence via Audio/COMAND control panel
^ Terminate call function sequence over multifunction steering wheel button groups
^ Terminate call function sequence via the service center
^ Terminate telephone call function sequence in handsfree mode with the service center

The system is described on the example of a system with code (386) Comfort telephony. Differences from the basic telephony are marked by the symbol.

The fixed, reserved telephone book entry in the telephone book or in the address book of the "audio unit" or in the telephone book of the mobile phone is selected via one of the following components:
- Buttons on the mobile phone
- Telephone buttons or keypad on the audio equipment
- Audio/COMAND control panel
- Multifunction steering wheel button groups
- Voice control of VCS [SBS] (with code (511) Audio 50 APS with DVD changer, with code (527) COMAND APS with single DVD drive (with navigation) or with code (512) COMAND APS with DVD changer)

The data is transferred after an active telephone call by actuating a number key on the keypad of the "audio unit".

Selecting fixed, reserved telephone book entry function sequence via the buttons on the mobile phone
The fixed, reserved telephone book entry is selected via the buttons on the mobile phone or from the mobile phone's phone book. The "Accept phone call" button is pressed. The telephone call is then established in handsfree mode.
The control signals from the buttons on the mobile phone are processed internally in the mobile phone.

Selecting fixed, reserved telephone book entry function sequence via the telephone buttons or the keypad on the audio equipment
After dialing the permanently reserved phone book entry using the telephone buttons on the "audio equipment" and pressing the Accept phone call" button, the phone call is established in hands-free mode. The control signals from the telephone buttons on the audio equipment are processed internally and forwarded to the mobile phone via the following route:
- Direct line
- Bluetooth antenna (A2/91)
- Bluetooth module
- Cradle

Communication with the basic telephony takes place between the "audio unit" and the mobile phone in the following way:
- Direct line
- Bluetooth antenna
- Mobile phone Bluetooth antenna

Function sequence for selection of permanently reserved phone book entry using Audio/COMAND control panel
With code (527) COMAND APS with single DVD drive (with navigation) or with code (512) COMAND APS with DVD changer The "Telephone (TEL)" base function is activated by pressing the "TEL hardkey" on the audio equipment or by selecting the "TEL" menu item in the application bar on the Audio/COMAND display (A40/8).
The menu item is shown on the Audio/COMAND display by the "audio equipment" via a low voltage differential signal (LVDS) line.

With code (525) MB Audio 50 APS radio or with code (511) Audio 50 APS with DVD changer:
The "Telephone (TEL)" base function is activated by pressing the "TEL hardkey" on the audio equipment.

The user now has the following options for selecting the permanently reserved phone book entry:
- Enter telephone number using available speller
- Search for telephone number using "Name" menu entry in the phone book
- Search for the telephone number using the "Address book" menu entry in the address book
- Search for the telephone number using the "Call lists" menu entry in the call lists

Activation of the "SEND" function on the Audio/COMAND display establishes the telephone call in hands-free mode. The control signals from the Audio/COMAND control panel are forwarded to the "audio equipment" via the telematics CAN. The control signals are then forwarded to the mobile phone via the following route:
- Direct line
- Bluetooth antenna
- Bluetooth module
- Cradle

The user can scroll forward and back in the phone book or the address book and in the call lists using the Audio/COMAND control panel to select the permanently reserved phone book entry.

Communication with the basic telephony takes place between the "audio unit" and the mobile phone in the following way:
- Direct line
- Bluetooth antenna
- Mobile phone Bluetooth antenna

Function sequence for selection of permanently reserved phone book entry using multifunction steering wheel button groups
The phone book or the address book is selected by pressing the system selection (S110s3) button via the selection menu in the instrument cluster (A1). The permanently reserved phone book entry can be selected by scrolling forward and back using the scroll forward and back button (S110s1).
The accept/terminate phone call button (S111s3) can be used to establish the telephone call in the handsfree system. The control signals of the multifunction steering wheel button groups are forwarded to the "audio unit" via the following components:
- Direct line
- Steering wheel electronics (N135)
- Steering LIN (LIN E1)
- Steering column module control unit (N80)
- Chassis CAN (CAN E)
- Instrument cluster
- Interior CAN (CAN B)

The control signals are sent from the audio equipment to the mobile phone via the following route:
- Direct line
- Bluetooth antenna
- Bluetooth module
- Cradle

The display in the instrument cluster is conducted by the "audio unit" via interior CAN.

Communication with the basic telephony takes place between the "audio unit" and the mobile phone in the following way:
- Direct line
- Bluetooth antenna
- Mobile phone Bluetooth antenna

Selecting fixed, reserved telephone book entry function sequence via the VCS [SBS] (with code (511) Audio 50 APS with DVD changer, with code (527) COMAND APS with single DVD drive (with navigation) or with code (512) COMAND APS with DVD changer)
Pressing the voice control system ON button (S111s4) of the right multifunction steering wheel button group activates the voice control of the voice control system.
The control signal from the VCS [SBS] on button is forwarded to the "audio unit" via the following components:
- Direct line
- Steering wheel electronics
- Steering LIN
- Steering column module control unit
- Chassis CAN
- Instrument cluster
- Interior CAN

A signal tone is emitted after the voice control system has been activated. The signal tone is transmitted from the audio equipment to the sound system amplifier control unit (N40/3) via the Media Oriented System Transport (MOST). From there, the signal tone is transmitted by means of an audio signal to the following speaker via direct lines:
- Center dashboard speaker (H4/27)
- Left rear surround speaker (H4/54)
- Right rear surround speaker (H4/55) (with model 212.2)
- Right rear surround speaker (H4/57) (with model 212.0)
- Left front door sound system tweeter (H4/68)
- Right front door sound system tweeter (H4/69)
- Left rear door sound system tweeter (H4/70)
- Right rear door sound system tweeter (H4/71)
- Left front door sound system midrange and bass speakers (H4/72)
- Right front door sound system midrange and bass speakers (H4/73)
- Left rear door sound system midrange speaker (H4/80)
- Right rear door sound system midrange speaker (H4/81)

For the bass speaker (H4/17) (model 212.0) or for the bass speaker (H4/29) (model 212.2), the audio signal is routed from the audio equipment to the sound system amplifier control unit via MOST and from there to the bass speaker via the rear bass speaker amplifier (N40/9) using direct lines.

On vehicles without code (810) Sound system, the audio signal is output directly by the audio equipment to the following speakers:
- Left front door speaker (H4/1)
- Left front door tweeter (H4/1h1)
- Right front door speaker (H4/2)
- Right front door tweeter (H4/2h1)
- Left rear door speaker (H4/3)
- Left rear door tweeter (H4/3h1)
- Right rear door speaker (H4/4)
- Right rear door tweeter (H4/4h1)

Establishing a call is activated in the dialog with the VCS [SBS] with the help of voice commands, e.g. with the following:
- "Dial number"
- "Redial"
- "Read telephone book"
- "Listen to or delete address book"
- "Open or spell entries"
- "Landline or mobile"
- "Dial"

The voice commands are registered by the hands-free system microphone (A67b1) and forwarded to the audio equipment via a direct line. The voice commands are then forwarded to the mobile phone via the following route:
- Direct line
- Bluetooth antenna
- Bluetooth module
- Cradle

The voice control of the voice control system (VCS) is used to establish the telephone call in the handsfree mode.

Communication with the basic telephony takes place between the "audio unit" and the mobile phone in the following way:
- Direct line
- Bluetooth antenna
- Mobile phone Bluetooth antenna

Establish telephone call in handsfree mode and transmit data to the service center function sequence
When the call has been established successfully, the "mobile phone" transmits or receives the mobile phone signals or data in the following way:
- Cradle
- Direct line
- E-net compensator (A28/3) (with code (386) Comfort telephony and code (228) Stationary heater)
- Direct line
- Mobile phone and stationary heater radio remote control antenna splitter (A2/53) (with code (386) Comfort telephony and with code (228) Stationary heater) and direct line
- Multifunction antenna (A28/11)

After an active call has been established to the service center, the user starts the data transfer. The data is transferred after the call has been established by actuating a number key on the keypad of the "audio unit".
The control signals from the telephone buttons or the keypad on the audio equipment are processed internally and forwarded to the mobile phone via the following route:
- Direct line
- Bluetooth antenna
- Bluetooth module
- Cradle

For data transfer purposes, the audio equipment checks the kilometer reading and the maintenance computer information of the instrument cluster via the interior CAN.

In vehicles with code (525) MB Audio 50 APS radio, with code (511) Audio 50 APS with DVD changer, with code (527) COMAND APS with single DVD drive (with navigation) or with code (512) COMAND APS with DVD changer, the navigation data is also transmitted by the navigation module integrated in the audio equipment.

The data is transmitted by the audio equipment by means of Dual Tone Multiple Frequency (DTMF) tones to the service center in the same way as when the call has been established successfully. After the data has been transferred to the service center, the user can talk to an employee at the service center or the workshop. The transmitted data is then available to the employee. The voice input is picked up by the hands-free system microphone and forwarded to the audio equipment via a direct line.

The voice input is then forwarded to the mobile phone via the following route:
- Direct line
- Bluetooth antenna
- Bluetooth module
- Cradle

The voice output in vehicles with code (810) Sound system takes place via audio signals from the audio equipment to the sound system amplifier control unit via MOST.

From there, the audio signal is transmitted to the following speakers over direct lines:
- Center instrument panel speaker
- Left rear surround speaker
- Right rear surround speaker
- Left front door sound system tweeter
- Right front door sound system tweeter
- Left rear door sound system tweeter
- Right rear door sound system tweeter
- Left front door sound system midrange and bass speakers
- Right front door sound system midrange and bass speakers
- Left rear door sound system midrange speaker
- Right rear door sound system midrange speaker

For the bass speaker, the audio signals are transmitted from the audio equipment to the sound system amplifier control unit via MOST and from there to the bass speaker via the rear bass speaker amplifier using direct lines.

On vehicles without code (810) Sound system, the audio signals are output directly by the audio equipment to the following speakers:
- Left front door speaker
- Left front door tweeter
- Right front door speaker
- Right front door tweeter
- Left rear door speaker
- Left rear door tweeter
- Right rear door speaker
- Right rear door tweeter

"Private mode" is activated by removing the mobile phone from the cradle. After activating "Private mode", the vehicle occupants will no longer be able to hear the other party over the vehicle's speaker system.

For basic telephony, the audio equipment transmits or receives the voice signals and the mobile phone signals and data via the following route:
- Direct line
- Bluetooth antenna
- Mobile phone Bluetooth antenna

Function sequence, terminate call using mobile phone buttons
Pressing the "QUIT" button on the mobile phone terminates the telephone call. The control signals from the buttons on the mobile phone are processed internally.

Terminate call function sequence over telephone buttons or keypad on audio equipment
Pressing the "END" button on the "audio equipment" terminates the telephone call. The control signals from the telephone buttons or the keypad on the audio equipment are processed internally and forwarded to the mobile phone via the following route:
- Direct line
- Bluetooth antenna
- Bluetooth module
- Cradle

Communication with the basic telephony takes place between the "audio unit" and the mobile phone in the following way:
- Direct line
- Bluetooth antenna
- Mobile phone Bluetooth antenna

Terminate call function sequence over Audio/COMAND control panel
When the "END" function is activated in the "Telephone (TEL)" base function on the Audio/COMAND display, the telephone call is terminated. The control signals from the Audio/COMAND control panel are forwarded to the "audio equipment" via the telematics CAN. The control signals are then forwarded to the mobile phone via the following route:
- Direct line
- Bluetooth antenna
- Bluetooth module
- Cradle

Communication with the basic telephony takes place between the "audio unit" and the mobile phone in the following way:
- Direct line
- Bluetooth antenna
- Mobile phone Bluetooth antenna

Terminate call function sequence over multifunction steering wheel button groups
The accept/terminate phone call button terminates the telephone call. The control signals of the multifunction steering wheel button groups are forwarded to the "audio unit" via the following components:
- Direct line
- Steering wheel electronics
- Steering LIN
- Steering column module control unit
- Chassis CAN
- Instrument cluster
- Interior CAN

The control signals are sent from the audio equipment to the mobile phone via the following route:
- Direct line
- Bluetooth antenna
- Bluetooth module
- Cradle

Communication with the basic telephony takes place between the "audio unit" and the mobile phone in the following way:
- Direct line
- Bluetooth antenna
- Mobile phone Bluetooth antenna

Terminate call function sequence via the service center
The employee in the service center or the workshop can also terminate the telephone call. This procedure will run externally.

Terminate telephone call function sequence in handsfree mode with the service center
After a phone call has been terminated, the mobile phone interrupts the transmission or reception of the mobile phone signals





pro multis · About Operation CHARM