Control Module
The traffic message channel module (TMC) stores a list of the stations (or frequencies) found during the most recent search. When started, the control module tunes to the last set station. If there is no information about the station, the control module will search automatically starting at 99.4 MHz. If a new TMC station is found that is not already in the list, this station is stored automatically.
If the signal from the present frequency does not contain any RDS data, the control module will automatically begin a new search. The search continues until a station is found which transmits traffic messages. If the control module does not find any TMC stations, the control module returns to the last set frequency.
Automatic searching only takes place if none of the stations in the stored list have better reception than the station currently tuned in. During automatic searching, the list of saved stations is erased and a new list is created. Automatic searching may take up to 10 minutes.
The traffic message channel module (TMC) is controlled via the menu system in the multimedia module (MMM).
When the ignition is switched off the power consumption of the traffic message channel module (TMC) and antenna must not exceed 0.1 mA.
The system can endure temperatures between -40 °C and 85 °C.
The control module checks the input and output signals through an integrated diagnostic system.
The control module communicates with directly connected components, and via MOST communication.