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Mercedes-Benz Contact, function - GF82.70-P-2019GQ

MODEL 164 as of model year 2009 without CODE 498 (Japanese version) 

MODEL 251 as of model year 2009 without CODE 498 (Japanese version) 

Function requirements 

IMPORTANT To be able to operate a Bluetooth-compatible mobile phone authorized at "audio equipment" in the vehicle, the mobile phone must support hands-free profile (HFP) 1.0 or higher. More information is available under:

www.mercedes-benz-mobile.com/connect

IMPORTANT The entries in either of the two "books" below are always available; they can only be removed by deleting:

IMPORTANT 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 telephone book of the mobile phone 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 equipment" or the telephone book of the mobile phone. The "Mercedes-Benz Contact" function utilizes the hands-free system (via Bluetooth®) and supports the service acceptance process in the service center or, at a later point in time, in the workshop as well by switching to voice communication and synchronously transmitting vehicle data.

The "Mercedes-Benz Contact" function consists of the following subfunctions:

The system is described using the comfort telephony as an example.

Differences from the basic telephony are marked by the symbol IMPORTANT .

Operating instructions 

The fixed, reserved telephone book entry in the telephone book or in the address book of the "audio equipment" or in the telephone book of the mobile phone is selected via one of the following components:

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

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 hands-free 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 fixed, reserved telephone book entry by using the telephone buttons on the "audio equipment" and pressing the "Accept phone call" button or selecting the telephone function by using the keypad on the "audio equipment" and then activating the "SEND" function, the telephone call is established in hands-free mode. The "Telephone (Tel)" base function is activated via the "Tel" hard key on the "audio equipment" or the "Tel" menu item in the application bar with the keypad on the "audio equipment" and shown on the display of the "audio equipment".

Here, the user has the following options of selecting the fixed, reserved telephone book entry:

The fixed, reserved telephone book entry can be selected in the telephone book or address book and in the call lists by scrolling up and down. The control signals of the telephone keys or the keypad on the "audio equipment" are processed internally. The display of the menu item on the screen of the "audio equipment" also takes place internally.

Selecting fixed, reserved telephone book entry function sequence via the multifunction steering wheel button group 

The telephone book or the address book is selected by pressing the system selection (S110s3) button via the selection menu in the instrument cluster (A1). The fixed, reserved telephone book entry is selected by scrolling forward and back in the address book or the telephone book of the mobile phone using the scroll forward and back (S110s1) key.

The accept/terminate phone call button (S111s3) can be used to establish the telephone call in the hands-free system.

The control signals of the multifunction steering wheel button groups are forwarded to the "audio equipment" via the following components:

Communication between the "audio equipment" and the mobile phone is conducted via:

With code (386) Mobile phone (on model 251 as of 1.6.2013), communication takes place between the "audio equipment" and the mobile phone via:

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

IMPORTANT Communication with the basic telephony takes place between the "audio equipment" and the mobile phone in the following way:

Selecting fixed, reserved telephone book entry function sequence via 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 voice control of the VCS [SBS] is activated by pressing the VCS On button (S111s4) of the right multifunction steering wheel button group.

The control signal from the VCS [SBS] on button is forwarded to the "audio equipment" via the following components:

A signal sound is emitted after the voice control system has been activated.

The signal tone on vehicles with code (810) Sound system, is sent by the "audio equipment" via Media Oriented System Transport (MOST) to the amplifier for sound system (N40/3). From there, the signal tone is transmitted via direct lines to the following speakers:

IMPORTANT The audio signal for the subwoofer speaker (H4/29) travels via MOST from the "audio equipment" to the amplifier for sound system and from there using direct lines via the subwoofer amplifier (N40/9) to the subwoofer speaker.

IMPORTANT In vehicles except code (810) Sound system, the signal tone is transmitted directly from the "audio equipment" via direct lines to the following speakers:

Establishing a call is activated in the dialog with the VCS [SBS] with the help of voice commands, e.g. with the following:

The voice commands are acquired by the hands-free system microphone group (A67b1) and forwarded to the "audio equipment" via a direct line.

The voice control of the voice control system (VCS [SBS]) is used to establish the telephone call in the hands-free mode.

Function sequence for establishing call in hands-free mode and data transfer to service center 

When the call has been established successfully, the "audio equipment" transmits or receives the mobile phone signals or data in the following way:

With code (386) Mobile phone (on model 251 as of 1.6.2013), the "audio equipment" sends or receives the cell phone signals or data via the following path when a call is successfully established:

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 equipment". The control signals of the telephone keys or the keypad on the "audio equipment" are processed internally.

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

In vehicles with code (523) MB Audio 20 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 transmitted additionally 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 in the same way as when the call to the service center 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 in hands-free mode is registered by the hands-free system microphone group and forwarded via a direct line to the "audio equipment".

The voice output in vehicles with code (810) Sound system, is conducted by the "audio equipment" to the amplifier for sound system via MOST. From there, the voice output is transmitted via direct lines to the following speakers:

IMPORTANT The audio signal for the subwoofer speaker travels via MOST from the "audio equipment" to the sound system amplifier and from there, via the subwoofer amplifier, along direct lines to the subwoofer speaker.

IMPORTANT When in "private mode" the user can make a telephone call without other vehicle occupants being able to hear the conversation. The system switches to "private mode" when the mobile phone is removed from the mobile phone cradle (accessories).

IMPORTANT In vehicles except code (810) Sound system, the signal tone is transmitted directly from the "audio equipment" via direct lines to the following speakers:

IMPORTANT For basic telephony, the "audio equipment" receives or transmits the mobile phone signals or data in the following way:

Terminate call function sequence over mobile phone buttons 

Pressing the "END" 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 keys or keypad on "audio equipment" 

The telephone call is terminated by pressing the "END" button on the "audio equipment" or by activating the "END" function in the "Telephone (Tel)" base function. The control signals of the telephone keys or the keypad on the "audio equipment" are processed internally.

Function sequence, terminate call using 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 equipment" via the following components:

Function sequence for ending call by service center 

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

Function sequence for ending telephone call in hands-free mode with service center 

After a phone call has been terminated, the "audio equipment" interrupts the transmission or reception of the mobile phone signals or data. This takes place internally in the "audio equipment".

  Electrical function schematic for Mercedes-Benz Contact function Model 164 PE82.70-P-2061-97MAA
Model 251 PE82.70-P-2061-97RAA
  Overview of system components for mobile phone system MODEL 164 as of model year 2009 without CODE 498 (Japanese version) MODEL 251 as of model year 2009 without CODE 498 (Japanese version) GF82.70-P-9991GQ 
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