Voice Control System, Function - GF82.70-P-3021FH
Model 238
Up To Model Year 2021
With Code 357 (Map navigation)
Model 238
Up To Model Year 2021
With Code 531 (COMAND APS)
Function requirements for voice control system, general
- Circuit 30t ON
- Transport mode not active
Voice control system, general
The voice control system (VCS) is integrated in the head unit. The voice control system recognizes coherent commands that can be spoken by any person (e. g.: "Navigate to Mercedesstrae 87 in Stuttgart"), without the need for teach-in. If the message of the voice command is not clearly identified, a query is made by the voice control system.
On vehicles with code 531 (COMAND APS), numerous functions of the driver information system can be called up and operated, e. g.:
- Navigation
- Radio and other media sources (e.g. TV (with code 865 (TV tuner)))
- Telephony
- Vehicle menu
On vehicles with code 357 (Map navigation), the voice control system is limited to operation of the navigation mode.
Voice control system function sequence
The voice control system is switched on and off at the head unit multifunction steering wheel button group via the following components:
- Voice control ON and Favorites switch (as of 01.06.2018)
- Voice control system ON button (up to 31.05.2018)
The head unit multifunction steering wheel button group sends the control signal via the following route:
Steering wheel electronics →
Steering wheel CAN (as of 01.06.2018) or steering LIN (up to 31.05.2018) →
Steering column tube module control unit →
Chassis FlexRay →
Electronic ignition lock control unit →
User interface CAN →
Head unit
Voice input takes place via the driver hands-free system microphone, which is connected to the head unit via a direct line. The words that are spoken are converted into an electrical signal by the driver hands-free system microphone and forwarded to the head unit. The head unit processes the signals internally and implements them accordingly.
The audio signals are generated by the head unit and transmitted to the following components:
- Speaker system (except code 810 (Sound system) and except code 811 (Advanced Sound System) and except model 238.361/461)
- Midline sound system amplifier control unit, via MOST (model 238.361/461 except code 810 (Sound system) and except code 811 (Advanced Sound System))
- Sound system amplifier control unit, over MOST (with code 810 (Sound system))
- Advanced Sound System amplifier control unit, over MOST (with code 811 (Advanced Sound System))
| Overview of system components, telematics | GF82.85-P-9999FH |