TCB: Telematic Communication Box control unit basic version

The Telematic Communication Box (TCB) control unit basic version is connected to the CAN bus. It consists of a housing made of plastic. A battery compartment is integrated on the top side, which includes the emergency battery (see EMERGENCY BATTERY ).

The following aerials are integrated into the TCB control unit basic version.

• GSM aerial

  GSM stands for Global Standard for Mobile Communications. The GSM aerial is the telephone aerial for mobile phones. The GSM aerial is also used for data transfer by the telematics services.

• GPS aerial

  GPS stands for Global Positioning System. The global positioning system (GPS) determines the position of the vehicle by taking a bearing from several satellites and measuring their signal propagation delays.

A SIM card is also permanently installed in the TCB control unit basic version. SIM stands for Subscriber Identity Module. The permanently installed SIM card enables registration in the GSM network.

Fig 1: Identifying Telematic Communication Box Basic Version, Battery Compartment Cover And 18 Pin Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

The TCB control unit basic version is supplied with power by the Body Domain Controller (BDC), via terminal 30F.