Voice control, function - GF82.70-P-3020RF

Model 205 with code 531 (COMAND APS)

Model 253 with code 531 (COMAND APS)

Fig 1: Voice Control - Function Diagram

Courtesy of MERCEDES-BENZ USA

Function requirements for voice control system, general

Circuit 30 g ON
Transport mode not active

Voice control system, general

The individual functions of the driver information system are called up and operated via the voice control system (VCS [SBS]). The VCS [SBS] is integrated in the head unit. The voice control system can be controlled by spelling out or entering complete words.

Voice control system function sequence

The VCS is switched-on on the right multifunction steering wheel button group and switched off on the left multifunction steering wheel button group.

The control signal of the left multifunction steering wheel button group and the control signal of the right multifunction steering wheel button group is forwarded as follows:

Steering wheel electronics →

Steering LIN →

Steering column tube module control unit →

Chassis FlexRay →

Electronic ignition lock control unit →

User interface CAN →

Instrument cluster →

User interface CAN →

Head unit

Voice input takes place via the hands-free system microphone, which is connected via a direct line to the head unit. The words that are spoken are converted into an electrical signal by the hands-free system microphone and forwarded to the head unit.

Electrical function diagram for audio mode, function	PE82.60-P-2058-97FBA
Overview of system components, telematics	GF82.85-P-9999RF