1997 MERCEDES-BENZ ML430 CD player

In addition, the vehicle's course of travel is determined with the aid of the sequence of the locations calculated
with GPS.
Possible interference when receiving GPS signals
Since GPS operates in the GHz range (microwaves) and the signals are weak, reception interference can occur
as the result of:
atmospheric interference, e.g. weather, water vapor, fog
multiple reception resulting from reflecting of signals, e.g. from building walls
Signal shadows, e.g., in built-up areas, tunnel, in the proximity of higher buildings and trees
GPS reception therefore necessitates a clear view of the sky. The location finding accuracy of the GPS system is
100 m or better.
GLOBAL POSITIONING SYSTEM LOCATION FINDING, FUNCTION - GF82.61-P-3007GI
MODEL 163 as of 1.9.01 with CODE (522) Modular control system (MCS) radio USA with CODE (357)
Navigation system - additional unit with CODE (818b) Single CD player - additional unit with CODE
(491) U.S. version
Fig. 49: Identifying Global Positioning System Location Finding

General
The global positioning system (GPS) is a satellite-supported location findin
g system. It is not subject to fees
GPS/CTEL roof antenna
location/task/design/ functionModels 163,
168,208.3,210GF82.70-P-4111A
Global positioning system antenna,
location/ task/design/functionModels 170, 208.4GF82.61-P-4106A
Models 203, 209.3GF82.61-P-4106E
Model 209.4GF82.61-P-4107Q
Antenna splitter,
location/task/design/functionModel Series 163GF82.85-P-3107B

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
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If the destination is in the near vicinity, a map area is loaded within a radius of approx. 100 km of the
vehicle location ("Local area").
For destinations further away, an area is selected surrounding the vehicle location, the destination and the
concrete route to the destination ("Corridor formation").
After storing the map data, the DVD with the map data can be taken out of the drive. Now, audio CDs can also
be played.
If the driver deviates too far from the calculated route during the course of navigation system and thereby leaves
the map area stored in the navigation processor, it may be necessary to insert the DVD again in order to
calculate a new route. The navigation processor requests this automatically.
Location errors
The errors are classified into 2 categories:
Incorrect position indication between 2 driving instructions (may not occur more than once every 500
km)
Incorrect driving instruction (may not occur more than once every 1,000 km)
MAP-SUPPORTED LOCATION FINDING, FUNCTION - GF82.61-P-3008GI
MODEL 163 as of 1.9.01 with CODE (522) Modular control system (MCS) radio USA with CODE (357)
Navigation system - additional unit with CODE (818b) Single CD player - additional unit with CODE
(491) U.S. version
General
Map-supported location finding is available only in the digitized area of the CD-ROM map.
By comparing the calculated vehicle position with the CD-ROM map it is possible to recognize and
automatically correct the deviation.
Function
The vehicle position is permanently followed by the navigation processor on the CD-ROM map. If the route
deviates from the calculated route the position coordinates of the basic location finding are corrected if
necessar
y.
Global positioning
system location finding,
function GF82.61-P-3007C

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
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FERRY
TOLL
After calculation of the route, the navigation processor makes up a list of the streets along the route. This route
list is used for navigation. It can be displayed during navigation by pressing the "I" (INFO) and "RTE" (Route)
buttons.
Route updating
If the driver deviates from the calculated route, a new route list is automatically calculated by the navigation
processor. The current position and the direction of travel are taken into consideration, and the new route is
optimized accordingly. This is accomplished without any message on the display.
Circumventing traffic jams with "Traffic jam" menu key function
After a traffic jam is reported on traffic radio and before reaching the affected section, a route can be calculated
for driving around the traffic jam. For this purpose, activate the "Traffic jam" menu and enter the length of the
traffic jam including the distance to the start of the traffic jam.
The "Traffic jam" function is also available for Federal and State highways as well as for inner city areas.
Trips outside the digitized map area
If the vehicle leaves the digitized DVD map area (e.g. driving into a multi-level car park), then no route can be
calculated or updated. "OFF ROAD" appears on the display. Upon leaving the map boundary, the display "OFF
MAP" appears.
Destinations which lie outside of the digitalized map area cannot be taken into consideration on calculation of
the route.
ROUTE CALCULATION, FUNCTION - GF82.61-P-3011GI
MODEL 163 as of 1.9.01 with CODE (522) Modular control system (MCS) radio USA with CODE (357)
Navigation system - additional unit with CODE (818b) Single CD player - additional unit with CODE
(491) U.S. version
The route is calculated and updated continuously by the navigation processor after entering the destination on
the radio and navigation module (A2/56) It can only be calculated within the digitized map area. The
calculated route is the prerequisite of the guidance system .
Route calculation
The navigation processor calculates the route with the aid of the CD-ROMmap data, the entered destination
Destination guidance,
function GF82.61-P-3012D

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
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Fig. 52: Identifying Digitized DVD Map Area And Non-Digitized DVD Map Areas
Navigation is the generation and output of driving recommendations, in order to guide the driver to the desired
destination. The prerequisites of destination guidance include:
Constant map matching is in operation (occurs automatically),
Destination was entered
Route has been calculated.
The navigation processor continuously compares the route calculation data with the ongoing location finding
data and derives from this measures for further navigation.
The navigation processor is integrated in the radio (A2).
Depending on the vehicle position, a distinction is made between the following navigation modes:
Destination within digitized DVD map area
Restricted navigation outside the digitalized DVD map area
GUIDANCE, FUNCTION - GF82.61-P-3012GI
MODEL 163 as of 1.9.01 with CODE (522) Modular control system (MCS) radio USA with CODE (357)
Navigation system - additional unit with CODE (818b) Single CD player - additional unit with CODE
(491) U.S. version
Digitized and non digitized CD-ROM map areas
Destination guidance in
digitalized map area,
function GF82.61-P-4000C

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
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Fig. 54: Display Layout Of Radio (A2) During Navigation - Shown On Model 203
When traveling within the digitized map area, the following information calculated by the navigation processor
is available to the user (partially to be called with "I" (INFO) button):
Route list indicating the distance to be driven on the affected streets or roads
Distance to destination and estimated time of arrival (the time must be set correctly for this purpose).
Driving recommendations
Arrow indicating the driving direction
Current location, in other words name of city and street, latitude and longitude
Name of the next road into which the vehicle should turn
Distance to next turning point specified in units of length or as bar graph (3)
The navigation processor generates graphic signals for the navigation system symbols.
Actual route guidance is supported by voice output via the vehicle loudspeakers.
GUIDANCE IN DIGITIZED MAP AREA, FUNCTION - GF82.61-P-4000GI
MODEL 163 as of 1.9.01 with CODE (522) Modular control system (MCS) radio USA with CODE (357)
Navigation system - additional unit with CODE (818b) Single CD player - additional unit with CODE
(491) U.S. version
When driving within the digitized map area the following information is available to the user:
Current position and vehicle route on digital map (illustrated in figure)
Distance from destination and anticipated time of arrival
Destination guidance in
non-digitalized map area,
function GF82.61-P-4001C

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
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GUIDANCE IN NON-DIGITIZED MAP AREA, FUNCTION - GF82.61-P-4001GI
MODEL 163 as of 1.9.01 with CODE (522) Modular control system (MCS) radio USA with CODE (357)
Navigation system - additional unit with CODE (818b) Single CD player - additional unit with CODE
(491) U.S. version
When traveling outside of the digitized map area (e.g. company grounds, parking buildings, dirt roads,...),
however still within the CD-ROM map boundaries, the navigation processor switches over to " Guidance in
non-digitized map area " .
The following message appears on the display of the radio and navigation module (A2/56) :
"OFF ROAD "
In this case only basic location finding (dead reckoning) with correction by the GPS data is performed (no map
matching )
After reentering the digitized map area, the system automatically continues with " Guidance in digitized map
area ".
With the aid of the GPS position the possible roads, on which the vehicle could be located, are determined.
However, this can result in temporary delays in the guidance function.
DYNAMIC ROUTE GUIDANCE, FUNCTION - GF82.61-P-4003GI
MODEL 163 as of 1.9.01 with CODE (522) Modular control system (MCS) radio USA with CODE (357)
Navigation system - additional unit with CODE (818b) Single CD player - additional unit with CODE
(491) U.S. version
Dynamic route guidance,
function GF82.61-P-4003QA
Basic location finding,
function GF82.61-P-3006GI
Global positioning
system location finding,
function GF82.61-P-3007GI
Guidance in digitized
map area, function GF82.61-P-4000GI

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
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RADIO AND NAVIGATION MODULE, DESIGN - GF82.61-P-4109-03GI
The following is integrated into the radio and navigation module (A2/56) (maximum scope):
Graphic compatible 5" LCD color display
Navigation processor with GPS receiver and gyrosensor
Single CD drive for playing audio CD's (option)
Navigation CD drive for loading navigation data or for playing audio CD's (optional)
Telephone unit (optional)
Radio tuner
Audio amplifier
CC player
The radio and navigation module (A2/56) has the following digital interfaces:
Digital data bus (D2B)
K-cable (diagnosis interface)
Fig. 58: Identifying Radio And Navigation Module (A2/56) Design

RADIO AND NAVIGATION MODULE, FUNCTION - GF82.61-P-4109-04A
Models 163, 168, 170, 208, 209, 210 with code 353
Processing key signals
The controls on the radio (A2) are read in via I/O ports of the microcontroller and made available to the central
computer. Depending on the system function the button operations are processed further in the central computer
or conveyed via the Digital Data Bus (D2B) or interior CAN (CAN B) in the form of a data telegram to the
system components involved (e.g. CD changer).
Display

2001 Mercedes-Benz ML320
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Map data.
The digitized map area on the CD-ROM contains towns, cities, streets, intersections and their attributes (e.g.:
one-way streets, turn prohibitions, ...). It does not contain information about company and private ground,
farms, housing estates and agricultural roads.
Gyrosensor
The gyrosensor determines the direction change of the vehicle. It is installed in the navigation processor .
Calibration is not required.
RADIO AND NAVIGATION UNIT, LOCATION/PURPOSE/DESIGN/FUNCTION - GF82.61-P-4109A
MODEL 163,168,170, 208, 210 with CODE (353) Audio 30 APS
Fig. 59: Identifying Radio And Navigation Unit

Radio and navigation
unit, location GF82.61-P-4109-01A
Radio and navigation
unit, purposeRadio reception and
operation
Input/output and control
unit for navigation
Amplification of audio
signals
Control of integrated CD
player and (optional) CD
changer (A2/6)

Radio and navigation
unit, design GF82.61-P-4109-03A
Radio and navigation
unit, function GF82.61-P-4109-04A

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
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Saturday, October 02, 2010 3:30:05 PMPage 104 © 2006 Mitchell Repair Information Company, LLC.