Dedicated Short-Range Communications (DSRC), Function - GF82.88-P-2001GWJ

Model 463

as of model year 2013 up to model year 2019

with code ZJ1 (Local version for Japan)

Function requirements for Dedicated Short-Range Communications (DSRC), general

Circuit 15R ON
Transport mode not active
ETC (Electronic Toll Collection) card inserted

Dedicated Short-Range Communications (DSRC), general

The Dedicated Short-Range Communications system combines the following functions:

Payment of toll fees from the vehicle in the Electronic Toll Collection (ETC) system
Use of Vehicle Information and Communication System (VICS) services in the reception range of 5.8 GHz

The services provided through the VICS include e. g.:

Warning of obstacles in stretch ahead
Information on traffic conditions in stretch ahead
Warning if separate lanes are merged in the stretch ahead
Electronic direction signs
Messages from catastrophe early warning system (e.g. earthquake and tsunami warnings)

Function sequence for Dedicated Short-Range Communications

The DSRC antenna (A2/94) and the DSRC control unit (A50/3) are installed in the vehicle for transmitting and receiving data. The DSRC control communicates with the toll clearing station via the DSRC antenna and receives the VICS information in the 5.8 GHz range.

A special ETC card is required for the ETC system which has to be inserted into the DSRC control unit. All information concerning the user and the fees that have already been paid are stored on this card.

At vehicle side, the DSRC control unit is connected to the COMAND controller unit (A40/3). The COMAND controller unit transmits display messages as part of DSRC via an LVDS (Low Voltage Differential Signal) line to the Audio/COMAND Display (A40/8).

On vehicles except code EU9 (Harman Kardon® Logic 7® surround sound system), the COMAND controller unit outputs voice messages over the vehicle's speaker system. On vehicles with code EU9 (Harman Kardon® Logic 7® surround sound system), the COMAND controller unit forwards the voice messages via MOST to the sound system amplifier control unit, which actuates the speaker system.

In the following cases, an ETC voice message is output via the speaker system and also appears on the Audio/COMAND display:

ETC card not inserted.
ETC card read error detected.
ETC card not accepted.
ETC card reader error detected.
Error in communication with tollbooth.
Detailed information about recent toll payments available.
Payment procedure successfully completed (beep).

In the following cases, the LED shows an error on the Dedicated Short-Range Communications control unit (LED flashes red):

Invalid ETC card inserted
ETC card not inserted correctly
Malfunction of the ETC card reader

If an ETC card is inserted and the Dedicated Short-Range Communications control unit does not recognize an error, the LED is lit in green.

	Electrical function schematic for Dedicated Short-Range Communications		PE82.88-P-2059-97ZGA
	Overview of system components, telematics		GF82.85-P-9999GW