Mercedes-Benz ML320. Manual — part 240

Fig. 55: Identifying Dynamic Route Guidance Function

Starguide was developed on the basis of dynamic route guidance in Europe. In order to comply with the more
comprehensive USA requirements this system also contains an additional Information Service specially
adapted to specific user requirements.

Dynamic route guidance

The desired requirements are transmitted to the S ervice O perating C enter (SOC ). The Service O perating C
enter (SOC ) transmits the individual and relevant traffic situations to the vehicle in the greater metropolitan
area of Los Angeles.

The current route guidance and the calculation of the dynamic route guidance is accomplished by the navigation
processor in the radio and navigation module (A2/56)

Moreover, traffic jams and construction sites are indicated on the radio and navigation module (A2/56)
display in form of icons .

•

•

The dynamic route guidance service will be tested in the Los Angeles area beginning in the summer of 2001.

2001 Mercedes-Benz ML320

1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis

me

DYNAMIC ROUTE GUIDANCE, FUNCTION - GF82.61-P-4003QA

MODEL 163, 168, 170, 203.0 /2 /7, 208, 209.3 /4, 210 with CODE (353) Audio 30 APS

The current traffic situation is taken into consideration in the dynamic route guidance. The COMAND
navigation system Audio 30 APS can receive information on the traffic situation either by the Traffic Center
Service (TCS) or the Traffic Message Channel (TMC).

The services from the Traffic Center Service (TCS) are offered by an external provider and an application is

to be sent to the provider for use.

Traffic messages via Traffic Center Service (TCS)

The latest traffic situation information is transmitted by a service provider for a fee in the form of an SMS (short
message service) signal via the CTEL D network. The traffic data are only transmitted when the service
provider receives a corresponding request from the vehicle.

The request can be sent either:



Cyclically, every 15 minutes



Once

In order to reduce the data volume the current location of the vehicle is automatically sent to the D network
center when the information request is posted.

The service provider then transmits only traffic messages at within a radius of approx. 75 km of the vehicle. The
telephone system of the vehicle receives the traffic announcements and transmits them via the D2B to the traffic
data recorder that is integrated in the radio (A2).

It is possible to use the telephone during TCS data interchange.

Traffic messages via Traffic Message Channel (TMC)

Information on the current traffic situation is transmitted by a specially equipped radio-broadcast station aimed
at specific areas and coded (toll) or uncoded (toll free) via VHF. For this purpose an appropriate FM/ RDS
station must be tuned in.

The radio (A2) receives the traffic announcements and transmits them to the traffic data recorder. Since no
communication is accomplished between the vehicle and broadcasting corporation with TMC messages, the
traffic data recorder selects the traffic messages related to the route on which the vehicle is presently driving as

Starguide, function

GF82.85-P-2014GI

Information service,
function

GF82.85-P-3016GI

Data transmission for
Starguide, function

GF82.85-P-3017GI

2001 Mercedes-Benz ML320

1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis

me

well as the surrounding area.

Traffic information analysis

In both cases (TCS or TMC) the traffic data recorder decodes the traffic information and forwards it when
requested to the navigation computer. The navigation processor makes the decision whether the route should be
changed. If necessary, a message that the route should be changed is output via the vehicle speaker.

For synchronization purposes the traffic data recorder needs a list from the navigation processor, in which each
stretch and each striking feature (e.g., freeway exit) of the recorded street network is clearly defined with the aid
of a number. The list is originally stored on DVD. If required (e.g. changing the DVD) it is automatically
loaded into the traffic data recorder. The traffic information stored in the traffic data recorder is erased
automatically after 0.5 hrs., max. 100 messages can be stored.

The decoded traffic messages are marked on the map using suitable symbols. They can also be displayed as
clear text. To this end the "alternate route" button should be pressed and the "TRAFFIC INFO" menu activated.

RADIO AND NAVIGATION UNIT, LOCATION - GF82.61-P-4109-01A

Models 163, 168, 170,208, 210 with code 353

Radio/navigation unit
location/task/design/ function

Models 163, 168,
170, 208, 210

GF82.61-P-4109A

Model 209

GF82.61-P-4109QA

Radio, location/task/design/function

Model 203

GF82.60-P-4109P

Transmitter/receiver unit,
location/task/design/ function

Model 203, 210
with code (853) MB
standard telephone
with code (855)
TELE AID
with code (930) taxi
emergency call
Model 209
with code (853) MB
standard telephone
with code (855)
TELE AID

GF82.95-P-4300A

Telephone interface,
location/task/design/ function

Model 203, 209

GF82.70-P-3107Q

2001 Mercedes-Benz ML320

1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis

me

Fig. 56: Identifying Radio And Navigation Unit - Illustrated On Model 168

RADIO AND NAVIGATION MODULE, LOCATION - GF82.61-P-4109-01GI

Fig. 57: Identifying Radio And Navigation Module - Radio And Navigation Module

RADIO/NAVIGATION MODULE, DESIGN - GF82.61-P-4109-03A

Models 163, 168, 170, 208, 209, 210 with code 353

The Audio 30 APS operating unit is a complete radio and navigation system.

It has:



Radio/receiver with 2-tuner technology



a signal input for audio mute



Digital Data Bus interface (D2B)



Display



4-channel amplifier with 4 speaker outputs



CD ROM-disk drive for audio and navigation data CDs



a navigation processor with integrated GPS receiver and gyro sensor



Output of intermediate frequency signal (ZF) for the FM antenna diversity function



Interface of interior CAN (CAN-B) and D2B (Digital Data Bus)

2001 Mercedes-Benz ML320

1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis

me