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TCB: Control unit for Telematic Communication Box

The control unit for the Telematic Communication Box (TCB) is connected to the Controller Area Network bus. It comprises a metal base plate, as well as a plastic housing. A battery compartment is integrated on the top side, which includes the emergency battery (see section "EMERGENCY BATTERY").

Fig 1: Identifying Telematic Communication Box Components
G09841648Courtesy of BMW OF NORTH AMERICA, INC.
Item Explanation
A Front
B Rear
1 Cover of battery compartment
2 Telematic Communication Box (TCB)
3 26-pin plug connection
4 USB interface
5 Emergency battery
6 Connection for GSM aerial (for telematics services) and connection for emergency GSM aerial