1997 MERCEDES-BENZ ML500 sat nav

RADIO/NAVIGATION MODULE , LOCATION/PURPOSE/DESIGN/FUNCTION - GF82.61-P-4109GI
MODEL 163 as of 1.9.01 with CODE (522) Modular cont rol system (MCS) radio USA with CODE (357)
Navigation system - additional uni t with CODE (818b) Single CD player - additional unit with CODE
(491) U.S. version
Fig. 60: Identifying Radio And Navigation Module

Fig. 61: Identifying Radio And Navigation Module Connectors

Radio and navigation
module, location GF82.61-P-4109-01GI
Radio and navigation
module, purposeCentral control for the
following systems:
Radio, CC player, CD
player (optional) and


2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electr ical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:05 PMPage 105 © 2006 Mitchell Repair Information Company, LLC.

SURVEY OF SYSTEM COMPONENTS, AUDIO 30 APS, LOCATION/TASK/ DESIGN/FUNCTION - GF82.61-P-9998ZZ
MODELS 163, 168, 170, 203.0 /2 /7, 208, 209.3 /4, 210 with CODE (353) Audio 30 APS
CD changer
(optional)
Sound system
(optional)
Navigation system
(optional)
Telephone (optional)
Radio and navigation
module, design GF82.61-P-4109-03GI
Radio and navigation
module, function GF82.61-P-4109-04GI
Radio and navigation unit,
location/task/design/ functionModel 163, 168,
170,208,210GF82.61-P-4109A
Model 209GF82.61-P-4109QA
Radio location/task/design/functionModel 203GF82.60-P-4109P
Additional fan for radio/navigation
unit, location/ taskModel 203 as of
1.6.03GF82.61-P-4110P
FM/AM antenna amplifier,
location/task/design/ functionModels 163, 168,
170, 208.4, 210.2GF82.62-P-4101A
Models 208.3, 210
(except, 210.2) with
code 352a
Antenna amplifier module,
location/task/design/ functionModels 203.0/7,
209.3GF82.62-P-3105PP
Model 203.2GF82.62-P-3105PS
Model 209.4GF82.62-P-3105QA
Rear window antenna,
location/task/design/ functionModels 203.0/7,
209.3GF82.62-P-3106PP
Model 203.2GF82.62-P-3106PS
Windshield antenna,
location/task/design/ functionModel 209.4GF82.62-P-3112Q
Radio reception antenna, location/taskModel 209.4GF82.62-P-4103Q
Radio reception amplifier, location/taskModel 209.4GF82.62-P-4104Q
Telephone antenna, location/taskModels 203.0/2/7,
209.3GF82.62-P-4105PP
Model 209.4GF82.62-P-4105Q
GPS/telephone roof antenna,
location/task/ design/functionModels 163, 168,
208.3, 210GF82.70-P-4111A

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:05 PMPage 106 © 2006 Mitchell Repair Information Company, LLC.

Fig. 64: Identifying Antenna System Block Diagram (01.09.01)
Preliminary remark
This description concerns mainly the audio, CTEL and navigation antenna system for vehicles fitted with
COMAND or radio and navigation unit (MCS).
General
The different antennas are matched in terms of design to their specific reception and transmitting ranges.
A distinction must be made between passive and active antennas:
Passive antennas do not require a voltage supply, they can therefore not directly amplify the radio signal
received.
Active antennas are supplied with voltage. They feature an integrated amplifier.
The voltage can be supplied over separate cables or over the coaxial cables over which the actual signals are
transmitted simultaneously ( phantom feed ) . In this case, no separate leads are required for the power
supply .

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:05 PMPage 110 © 2006 Mitchell Repair Information Company, LLC.

Fig. 66: Identifying Speaker System (LSA) Components Location
TABLE OF CONTENTS, FUNCTION DESCRIPTION OF ANTENNA SYSTEM (ATS) - GF82.62-P-0999GHZ
MODEL 163
SOUND AMPLIFIER, POSITION - GF82.62-P-3100-01GH
Fig. 67: Identifying Sound Amplifier Location
SOUND AMPLIFIER, FUNCTION - GF82.62-P-3100-04GH
The data interchange between the sound amplifier (A2/13) and the possible signal sources, e.g.:
Radio (A2) or
COMAND operating, display and control module (A40/3)
is performed via the digital databus (D2B ). Here, both the control information and the signals from the audio
sources (radio, CD, navigation voice command) are sent via the digital databus (D2B ).
Signal processing
In order to make the diverse sound settings possible, the sound amplifier (A2/13) is equipped with a D igital S
ignal P rocessor (DSP ), which performs the entire signal filtering process. In comparison to conventional
Antenna system (ATS), function GF82.62-P-
0001GH
Survey of system components for antenna
system (ATS),
location/purpose/design/function GF82.62-P-
9999GHZ

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:06 PMPage 113 © 2006 Mitchell Repair Information Company, LLC.

REAR WINDOW ANTENNAS, DESIGN - GF82.62-P-3106-03GH
Model 163
Antenna ranges
Sound amplifier,
position GF82.62-P-3100-
01GH
Sound amplifier, taskProcessing (sound settings)
and amplification of all audio
signals (radio, cassette, CD,
navigation voice command,..)
Sound amplifier, designDigital databus interface
(D2B)
Connection for sound
amplifier microphone
(B25/6) for automatic
vehicle noise
compensation
Digital filter technology
outputs distributed
across following
loudspeaker groups:
Treble
Medium treble
Medium bass
Bass

These are distributed as
follows:
Left front
Right front
Left rear
Rear right
Center
Woofer

Sound amplifier,
function GF82.62-P-3100-
04GH

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:06 PMPage 115 © 2006 Mitchell Repair Information Company, LLC.

CD PLAYER WITH CHANGER, LOCATION - GF82.64-P-3113-01GI
The CD player with changer is located behind the access flap in the right side cover of the trunk.
Fig. 73: Identifying CD Player With Changer Location

CD PLAYER WITH CHANGER, FUNCTION - GF82.64-P-3113-02GI
Controlling CD player
The CD player with changer (in trunk) (A2/6) is controlled by the radio and navigation module (A2/56)via
the digital data bus (D2B).
The CD player generates reports on the following operating conditions:
No magazine in CD changer
Magazine assignment (only with music CD)
Number of current CD
Number of current title
List of occupied slots (CDs)
Title number per disc
Current operating state (acoustic playback of radio signals, pause, etc.)
The messages are stored on the digital data bus D2B ) and interpreted by the radio and navigation module
(A2/56) .
CD playback
The audio data is stored digitally on the CD-ROM . The audio CD is driven by a motor in the CD-player with
changer (in trunk) (A2/6) .
location/task
Contents - function description
of antenna system (ATS) GF82.62-P-0999GHZ

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:06 PMPage 121 © 2006 Mitchell Repair Information Company, LLC.

The laser-optical device scans the non-labeled side of the rotating CDwithout making contact and converts the
digital optical signals into electrical signals. Small interruptions in the data flow of the laser optics caused by
scratches or contamination on the audio CD are compensated by the D/A converter supplementing the missing
values .
The electrical signals are then decoded in the CD player with changer (in trunk) (A2/6) and transmitted via
the digital data bus ( D2B ) to the radio and navigation module (A2/56) via the audio signal processing or
when the sound amplifier (A2/13) (code 810) is installed to the loudspeakers.
Jumps and interruptions during playback
On bad roads or in the event of heavy vibrations , jumps and interruptions can occur during playback. In
such cases do not start CD mode until better road conditions are present.
In the event of wet weather conditions and strong deviations in the ambient temperatures moisture can collect in
the CD player housing (condensation formation). This could also lead to malfunctions in the playback. In such
cases provide for sufficient ventilation of the CD player and the trunk.
CD PLAYER WITH CHANGER, LOCATION/TASK/DESIGN/FUNCTION - GF82.64-P-3113B
MODELS 163, 208, 210, 215, 220 with CODE (819) 6-disc CD changer
MODELS 208, 210, 215, 220 with CODE (819a) CD changer with CODE (498) Japanese version
Shown on model 220 (as of 1.9.02)
Fig. 74: Identifying CD Changer (In Trunk) Location

CD player with changer,
locationThe CD player with
changer (in the trunk)
(A2/6) is located in the
trunk near the left side
wall.
Model 163GF82.64-P-3113-01GI
Models 208, 210GF82.64-P-3113-01D
Models 215, 220 with GF82.64-P-3113-01F

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:06 PMPage 122 © 2006 Mitchell Repair Information Company, LLC.

CD PLAYER WITH CHANGER, LOCATION/PURPOSE/DESIGN/FUNCTION - GF82.64-P-3113GI
MODEL 163 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 (819) 6-disk
CD changer in trunk with CODE (491) U.S. version
code 498
Models 215, 220 without
code 498GF82.64-P-3113-01E
CD player with changer,
purposePlaying audio
compact discs (CD)
Changing CDs
contained in the
magazine

CD player with changer,
design6-slot CD changer
magazine
only: 12-slot
CD changer
magazine
Digital Data Bus
(D2B) interface

The factory planned
installation position for
the CD changer is vertical,
whereby other installation
positions are possible by
adaptation of the spring
locations.

CD player with changer,
functionModels 208, 210GF82.64-P-3113-02C
Model 215, 220GF82.64-P-3113-02B

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:06 PMPage 123 © 2006 Mitchell Repair Information Company, LLC.