See also:

General information
The channels are offered in predefined packages. The packages must be enabled by telephone. ...

Text messages
Text messages in combination with a symbol in the instrument cluster explain a Check Control message and the meaning of the indicator and warning lamps. ...

For US owners only
The transmitter and receiver units comply with part 15 of the FCC/Federal Communication Commission regulations. Operation is governed by the following: FCC ID: NBG009014A. Compliance statemen ...