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Mobile Phone System, Function - GF82.70-P-0007GWA

Model 463 

as of model year 2017 up to model year 2019 

with code EU4 (COMAND Online) 

G13669668Courtesy of MERCEDES-BENZ USA

Function requirements, general 

IMPORTANT If a smartphone is connected using Android Auto to the multimedia connection unit, telephone calls can only be made through the connected smartphone.

IMPORTANT Further information is available at:

http://www.mercedes-benz-mobile.com

Mobile telephone system, general 

A differentiation is made between the following equipment and utilization variants in the mobile phone system:

IMPORTANT Telephony via the telephone module with Bluetooth® (SAP) requires comfort telephony. Instead of the universal smartphone cradle, the telephone module with Bluetooth® (SAP) is plugged into the mobile phone contact plate.

IMPORTANT A mobile phone authorized on the COMAND controller unit can be used as a playback device as part of Bluetooth® audio.

IMPORTANT A mobile phone authorized on the COMAND controller unit can also be used as a modem to access the Internet.

The COMAND controller unit transmits and receives telephone signals via the Bluetooth® antenna. The COMAND controller unit generates the displays messages and transmits them to the Audio/COMAND display via an LVDS line.

IMPORTANT The mobile phone system is described here using basic telephony as an example. The special features of comfort telephony and telephony via the telephone module with Bluetooth® (SAP profile) are summarized at the end of this document.

The mobile phone system includes the following areas:

Bluetooth® 

Using Bluetooth®, it is possible to quickly and easily connect mobile terminals that support the corresponding profiles to the mobile phone system. Bluetooth® is a worldwide open standard for connecting Bluetooth® devices (e.g. mobile phone) wirelessly and is based on radio technology in the 2.4 GHz range. One advantage of Bluetooth®, in addition to the wide availability of Bluetooth® devices, is the uncomplicated and spontaneous connection of Bluetooth® devices. The extremely high level of data security (128-bit encoding) and the relatively limited radius (approx. 10 m) of this type of Bluetooth® network are what makes the use of Bluetooth® in the vehicle interesting. The COMAND controller unit can integrate mobile phones into the vehicle hierarchy via the mobile phone Bluetooth® interface and the Bluetooth® antenna. The COMAND controller unit automatically searches for the last two connected mobile phones and connects to the mobile phone that responds first.

If the mobile phone is not automatically connected to the COMAND controller unit or if the COMAND controller unit is to establish a connection to another mobile phone, then the connection must be made manually via the telephone base function. Authorized telephones can be selected from a list. Non-authorized telephones must be authorized first. Up to 15 mobile phones can be authorized at the same time. When authorizing a new telephone if 15 telephones are already authorized, the user is prompted to first delete one of the existing data records. Detailed information on authorization is available in the respective operator's manual.

IMPORTANT If a smartphone is connected to the multimedia connection unit through Android Auto, then only this smartphone can be used for making telephone calls.

Switch on/off characteristics 

The mobile phone is switched ON/OFF via the mobile phone itself. The Personal Identification Number (PIN) must then, where set, be entered in the mobile phone. If the subscriber identification module (SIM) has been authorized, the mobile phone registers with the mobile phone network of the respective provider. The mobile phone network provider and signal level are displayed in the status bar of the Audio/COMAND display. The Bluetooth® setting must be enabled in the mobile phone.

If the mobile phone was manually or automatically switched OFF or if the Bluetooth® setting is switched OFF, the message "Ready for Bluetooth® Telephony" is displayed in the Audio/COMAND display. The COMAND controller unit then searches again for the last authorized mobile phones.

Call signal 

The COMAND controller unit receives the call signal from the mobile phone via the Bluetooth® antenna. The COMAND controller unit sends the call tone via direct lines to the speaker system or, on vehicles with code EU9 (Harman Kardon® Logic 7® surround sound system), via MOST to the sound system amplifier control unit, which amplifies the signals and sends them to the speaker system. If the mobile phone supports "In-band ringing", the mobile phone ring tone is emitted over the speakers, otherwise the default ring tone of the COMAND controller unit is used.

The COMAND controller unit mutes the currently active audio source (e.g. with radio mode) (mute function) and displays the caller ID over the LVDS line on the Audio/COMAND display.

Establish, end, accept, reject or toggle call 

Telephone numbers can be entered using a character bar on the Audio/COMAND display or they can be searched for and selected in call lists or in the address book. The mobile phone system can be operated using the following components:

IMPORTANT Toggle: If during a telephone call another incoming call is received or another telephone connection is set up, then the new call is activated and the existing one put on hold. It is then possible to switch (toggle) between the active call and the one on hold.

IMPORTANT Conference connection: If the mobile phone supports the function, it is possible - after several calls have been connected - to switch, not only between the calls, as for toggling, but to have all the calls active at the same time in a conference connection.

Mobile phone 

Mobile phone operations are processed internally, and status changes are received by the COMAND controller unit via the Bluetooth® antenna.

Buttons on the COMAND controller unit 

The control signals are processed internally in the COMAND controller unit.

Audio/COMAND control panel 

The control signals of the Audio/COMAND control panel are forwarded via telematics CAN to the COMAND controller unit.

Multifunction steering wheel button groups 

The control signals of the multifunction steering wheel button groups are forwarded by the steering wheel electronics via the following route:

Steering LIN →

Steering column tube module control unit →

Chassis CAN 1 →

Electronic ignition lock control unit →

Chassis CAN 2 →

Instrument cluster →

Interior CAN →

COMAND control unit

Voice control system (VCS [SBS]) 

The VCS is activated on the left multifunction steering wheel button group. When a call is being established or a call is being accepted, the VCS is automatically switched off.

The control signal from the left multifunction steering wheel button group is forwarded by the steering wheel electronics via the following route:

Steering LIN →

Steering column tube module control unit →

Chassis CAN 1 →

Electronic ignition lock control unit →

Chassis CAN 2 →

Instrument cluster →

Interior CAN →

COMAND control unit

When the voice control system is active, the voice commands are picked up by the hands-free system microphone and forwarded via a direct line to the COMAND controller unit. The COMAND controller unit transmits the control signals to the mobile phone via the Bluetooth® antenna, if necessary.

IMPORTANT The individual voice commands are listed in the "Linguatronic operator's manual".

Using the phone in hands-free mode 

The voice input in hands-free mode is picked up by the hands-free system microphone and forwarded to the COMAND controller unit. The COMAND controller unit transmits the signals via the Bluetooth® antenna to the mobile phone. The COMAND controller unit receives the incoming voice signals via the Bluetooth® antenna from the mobile phone and outputs them via the speaker system. In vehicles with code EU9 (Harman Kardon® Logic 7® surround sound system) the COMAND controller unit forwards the incoming voice signals, including the audio parameters (e.g. volume) over MOST to the sound system amplifier control unit, which amplifies the signals and sends them to the speaker system.

The volume of the voice output can be adjusted e.g. using the COMAND controller unit or the right multifunction steering wheel button group. The control signal of the right multifunction steering wheel button group is forwarded by the steering wheel electronics via the following route:

Steering LIN →

Steering column tube module control unit →

Chassis CAN 1 →

Electronic ignition lock control unit →

Chassis CAN 2 →

Instrument cluster →

Interior CAN →

COMAND control unit

Phone book 

The telephone book contains the telephone entries stored in the COMAND controller unit. The user can manage (view and delete) his contact data in the telephone book. The system can be provided with the stored information via the phone book entries and the connection established immediately.

IMPORTANT Read access to the phone book of the mobile phone is provided if the mobile phone supports the Bluetooth Phonebook Access Profile (PBAP). Otherwise, data can only be loaded from the telephone book of the mobile phone onto the COMAND controller unit as "vcards".

Address book 

Users can manage their contact data in the address book. Address entries can only be removed by deleting individual entries or by deleting the entire address book. Address-relevant mobile phone system applications can be directly started and supplied with the stored data via address book entries.

Address data from external devices,(e.g. PDA or notebook) or storage media (e.g. SD card or universal serial bus (USB) stick)) can be stored in the address book and are then permanently available as an address entry. The address data can be sent to the address book via the following system components:

Address data that is transmitted via Bluetooth® is received by the COMAND controller unit from the Bluetooth® antenna. Address data from the multimedia connection unit is received by the COMAND controller unit via a direct line.

Address book entries can contain the following information among other things:

Speed-dial list 

The speed dial list consists of up to ten telephone numbers to which phone book entries can be assigned with digits from 0 to 9. The call list and speed dial list menu entries enable the user to manage the entries. The speed dial list is active only when the "Telephone" menu is active.

"Seamless switch" 

"Seamless Switch" provides the following functionality:

IMPORTANT The "Seamless Switch" function is not possible for telephony over the telephone module with Bluetooth® (SAP).

IMPORTANT With some Japanese mobile phones you can select how the mobile phone behaves if a connection is interrupted. If the "Switch off if connection is interrupted" setting has been selected, "Seamless Switch" cannot be activated because a brief connection interruption occurs.

Short message service (SMS) (except code ZJ1 (Version for Japan)) 

The SMS application allows the user to receive, transmit and manage his/her SMS messages (e.g. to read or delete them). For this, the received SMS messages already stored on the mobile phone as well as all new incoming SMS messages are forwarded to the COMAND controller unit. The following SMS functions are possible:

IMPORTANT The SMS function with basic telephony requires the Message Access Profile (MAP) to be supported. Under certain circumstances, loading SMS messages may take a long time. This may be because of the mobile phone or the number of SMS messages in the mobile phone.

As soon as the COMAND controller unit is connected to the mobile phone, it receives the SMS messages that are already stored in the mobile phone and any new incoming SMS messages via the Bluetooth® antenna from the mobile phone. The functions for writing, sending and managing SMS messages are activated through the basic telephone function. The COMAND controller unit displays the SMS messages on the Audio/COMAND Display via the LVDS line. When reading the SMS message aloud, the COMAND controller unit sends the audio signals either straight to the speaker system or, in vehicles with code EU9 (Harman Kardon® Logic 7® surround sound system), via MOST to the sound system amplifier control unit.

Additional function requirements for convenience telephony (with code EP3 (Universal Telephony package)) and telephony via the telephone module with Bluetooth® (SAP profile) (with code EG1 (Car telephony)) 

Comfort telephony (with code EP3 (Universal Telephony package)) and telephony over the telephone module with Bluetooth® (SAP) (with code EG1 (Auto telephony)) 

The mobile phone signals are sent and received via the multifunction antenna. The connection is established via the mobile phone contact plate in the stowage compartment (telephone compartment) between the front seats. In vehicles with code EP3 (Universal Telephony package) the universal smartphone cradle is plugged onto the mobile phone contact plate and the corresponding mobile phone is then inserted into the universal smartphone cradle. In vehicles with code EG1 (Auto telephony), the telephone module with Bluetooth® (SAP) is plugged onto the mobile phone contact plate.

IMPORTANT The telephone module with Bluetooth® (SAP profile) supports the SIM Access Profile (SAP).

Comfort telephony and telephony with code EG1 (Auto telephony) exhibit the following special features:

Mobile phone contact plate functions 

The mobile phone contact plate fulfills the following functions:

IMPORTANT The connection to the COMAND controller unit is made via the mobile phone (via Bluetooth®) or via the telephone module with Bluetooth® (SAP).

IMPORTANT When using the universal smartphone cradle, the mobile phone is not charged via the contact plate. For charging purposes, the mobile phone must also be connected to the multimedia connection unit via a charging cable that is included in the scope of supply.

signal curve 

The mobile phone signals are received from the mobile telephone network as follows:

Multifunction antenna →

Telephone and stationary heater antenna changeover switch or Mobile phone and stationary heater radio remote control antenna splitter →

Cellular telephone system antenna amplifier/compensator →

Mobile phone contact plate

In vehicles with code EP3 (Universal Telephony package) the telephone signals are forwarded over the following path by the mobile phone contact plate:

Universal smartphone cradle →

Mobile phone →

Bluetooth® antenna →

COMAND control unit

In vehicles with code EG1 (Auto telephony) the mobile phone contact plate forwards the telephone signals to the telephone module with Bluetooth® (SAP). The telephone signals can be forwarded by the telephone module with Bluetooth® (SAP) to the COMAND controller unit via two different routes:

Switch-on characteristics 

The mobile phone system is automatically switched on by a wake-up pulse from the COMAND controller unit when the COMAND controller unit is switched on. The COMAND controller unit transmits the signal to the mobile phone contact plate via a direct line. The mobile phone contact plate forwards the signal with code EG1 (Auto telephony) to the telephone module with Bluetooth® (SAP) and with code EP3 (Universal Telephony package) over the universal smartphone cradle to the mobile phone.

PIN prompt 

A prompt for the PIN is shown after switching on the mobile phone if the mobile phone is configured for this. The PIN prompt is shown on the Audio/COMAND display by the COMAND controller unit via an LVDS line. The PIN can be entered using the controls for the COMAND controller unit. For the telephone module with Bluetooth® (SAP) (with code EG1 (Auto telephony)) the PIN of a connected telephone or the SIM card can be stored, so that it does not have to be entered again when switched on.

Telephone module with Bluetooth® (SAP) (with code EG1 (Auto telephony)) 

The telephone module with Bluetooth® (SAP profile) can be used in two different ways to make a call:

Mobile phones that are to be used for telephony with the telephone module with Bluetooth® (SAP profile) must support SAP and be connected once (authorized) to the telephone module with Bluetooth® (SAP profile). Up to 15 mobile phones can be authorized. After switching on the COMAND controller unit, an automatic search is performed for the last two SAP telephones to be used in the vehicle and the first one to respond to the prompt is connected, provided that the following conditions are met:

If another mobile phone is to be connected, then the connection has to be interrupted first and then the corresponding mobile phone manually connected by selecting it from a list of SAP telephones.

IMPORTANT If necessary, the mobile phone can be charged using a USB connector at top beneath the cover on the telephone module with Bluetooth® (SAP). The USB connector on the telephone module with Bluetooth® (SAP) can also be used for a software update e.g. with a USB memory (USB stick). The update files and the procedure are made available to the customer on the Internet.

IMPORTANT The telephone module with Bluetooth® (SAP profile) is Internet capable when the mobile phone contract includes a data option.

IMPORTANT A ring tone can be selected for the respective SIM card or SAP telephone from a list of ring tones.

SMS (with code EG1 (Auto telephony)) 

State of the art mobile phones come with two memories for SMS messages: one on the telephone and one on the SIM card. As long as the mobile phone is used for telephony with code EG1 (Auto telephony), incoming SMS messages in the mobile phone can only be stored on the SIM card. Storing incoming SMS messages on the SIM card can lead to the following problems:

  Electrical function schematic for mobile phone   PE82.70-P-2051-97ZGC
  Overview of system components, telematics   GF82.85-P-9999GW 
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