LEMON Manuals: Even more car manuals for everyone
Home >> Mercedes Benz >> 2012 >> GL350 >> Repair and Diagnosis >> Accessories & Equipment >> Interior/Illumination Lights >> Electrical System - Body - 164 Chassis - 3 Of 8 >> Basic Knowledge >> Telephone switch-on/switch-off characteristics, function - GF82.70-P-2007GQ

Telephone switch-on/switch-off characteristics, function - GF82.70-P-2007GQ

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 at: www.mercedes-benz-mobile.com/connect

General 

With basic telephony, the mobile phone must be switched on or off manually via the buttons on the mobile phone.

With comfort telephony, the mobile phone is switched on automatically by switching on the "audio equipment" via a wake-up pulse from the "audio equipment" or switched off via a corresponding signal or after a run-on time, set on the mobile phone, has passed. The "telephone switch-on.off characteristics" 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

Function sequence for switch on 

The switch-on signal from the "audio equipment" is sent via a direct line and via the Bluetooth module (on model 251 up to 31.5.2013) or the mobile phone contact plate (on model 251 as of 1.6.2013) to the mobile phone cradle (accessories).

The mobile phone is then switched on and supplied with power. If set on the mobile phone, the Personal Identification Number (PIN) is requested after the mobile phone has been switched on. The PIN inquiry is displayed by the "audio equipment" via the screen on the "audio equipment" as well as via the interior CAN (CAN B) to the instrument cluster (A1).

Depending on the prompt, the 4 to 8-digit PIN must be entered in one of the following ways:

The control signals from the telephone buttons of the "audio control unit" are processed internally.

The control signals from the VCS are acquired by the handsfree system microphone group (A67b1) and forwarded to the "audio equipment" via a direct line.

Next, the "audio equipment" transmits the PIN entry to the mobile service switching center via the following path:

After registering in the mobile telephone network, the name of the mobile telephone network is shown on the display of the mobile phone and on the display of the "audio equipment" in vehicles except code (494) USA version or code (389) Mobile phone preinstallation with universal interface, USA/Canada.

In vehicles with code (494) USA version or code (389) Mobile phone preinstallation with universal interface, USA/Canada, the display only takes place on the screen of the mobile phone.

The mobile phone signals or data are received in the following way:

The display on the mobile phone's screen is forwarded internally. The signals to be shown on the display of the "audio equipment" are transmitted in the following way:

On model 251 with code (386) Mobile phone as of 1.6.2013, the signals for showing on the display on the "audio equipment" are sent via the following path:

IMPORTANT For basic telephony, the switch-on signal is processed internally in the mobile phone. The PIN inquiry, if set on the mobile phone, is only displayed on the mobile phone's screen. The PIN is only entered via the buttons on the mobile phone. The PIN entry is transmitted to the mobile service switching center and the registration confirmation is provided via the mobile phone's antenna. The mobile phone network name is also displayed just on the mobile phone's screen. The display of the PIN, of the mobile phone network name and the signals of the buttons on the mobile phone are processed internally in the mobile phone.

Switch off function sequence 

The switch-off signal from the "audio equipment" is sent via a direct line and via the Bluetooth module (on model 251 up to 31.5.2013) or the mobile phone contact plate (on model 251 as of 1.6.2013) to the mobile phone cradle (accessories). The mobile phone is then switched off and power supply interrupted. Expiration of the run-on time configured in the mobile phone takes place internally in the mobile phone.

IMPORTANT For basic telephony, the switch-off signal is processed internally in the mobile phone. If the rechargeable battery of the mobile phone is empty, the mobile phone is also switched off.

IMPORTANT By switching off the mobile phone and then subsequently removing the SIM card, the mobile phone is taken out of operation. The SIM card may only be removed after the mobile phone has been deactivated in order to prevent permanent damage to the memory chip provided on the SIM card.

Supplemental information 

The PIN serves to prevent any unauthorized use of the SIM card. The SIM card is locked after the PIN has been entered incorrectly 3 times. The SIM card is enabled again by entering the personal 8-digit Personal Unblocking Key (PUK) using the buttons on the mobile phone for basic telephony and comfort telephony.

This allows entry of a new PIN number. If the PUK is entered incorrectly 10 times in succession, the SIM card can no longer be used and a new SIM card must be applied for from the service provider.

  Electrical function diagram for mobile phone switch on and switch off characteristics Model 164 PE82.70-P-2054-97MAA
Model 251 PE82.70-P-2054-97RAA
  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 
scientia non olet · About LEMON Manuals