radio code MERCEDES-BENZ ML320 1997 Complete Workshop Manual

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

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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

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Fig. 80: Identifying GPS/CTEL Roof Antenna Design
GPS/CTEL ROOF ANTENNA, FUNCTION - GF82.70-P-4111-04D
Model 163 with code 353
CTEL and GPS roof antenna (A2/49)
The CTEL and GPS roof antenna (A2/49) is a combination antenna for the telephone and GPS.
The integrated GPS antenna (A2/49a2) receives the GPS satellite signals. This antenna does not transmit
signals.
The integrated CTEL antenna (A2/49a1) receives and transmits GSM radio signals.
The CTEL and GPS radio signals are transmitted to an antenna socket used by both. For this reason only one
antenna cable is required.
The CTEL and GPS roof antenna (A2/49) is an active antenna. It is supplied with DC power via the antenna
cable (phantom feed). The electronic circuitry in the antenna must ensure that
the telephone transmitter signals are only transmitted to the CTEL antenna (A2/49a1) .
the signals received by both antennas are available at an antenna output.
The antenna is connected to the CTEL and GPS antenna splitter (A2/57) by a coaxial cable.
GPS/CTEL ROOF ANTENNA, FUNCTION - GF82.70-P-4111-04GH
Model 163

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Function up to 31.8.01
The GPS/CTEL roof antenna (A2/49) is a combination antenna for telephone and GPS.
The CTEL and GPS roof antenna (A2/49) receives the GPS satellite signals. No GPS signals are transmitted
over this range of the antenna.
The CTEL and GPS roof antenna (A2/49) receives and transmits the GSM radio signals.
The radio signals for CTEL and GPS are transmitted to the CTEL and GPS antenna splitter (A2/57) via a
common antenna cable.
The CTEL and GPS roof antenna (A2/49) is an active antenna .
It is supplied with direct voltage via the antenna cable ( phantom feed ). The electronics in the antenna must
ensure that the
transmission signals of the cellular telephone are transmitted by the CTEL and GPS roof antenna
(A2/49)
the received signals of both antennas are made available to an antenna output.
The antenna is linked via a coaxial cable to the CTEL and GPS antenna splitter (A2/57) .
Function as of 01.09.01
The CTEL and GPS roof antenna (A2/49) is a new version of the combination antenna for CTEL and GPS.
It has an integrated antenna splitter and an antenna amplifier, which eliminates the need for the CTEL and
GPS antenna splitter (A2/57) . splitter
The CTEL and GPS roof antenna (A2/49) has connections for
Cellular telephone,
GPS navigation system and
GPS E-Call ( )
GPS/TELEPHONE ROOF ANTENNA, LOCATION/TASK/DESIGN/FUNCTION - GF82.70-P-4111A
MODELS 140, 210 up to 31.5.98 with CODE (348) TELE AID emergency call system
MODELS 129, 202, 208.3, 210 as of 6/198, 220 with CODE (347) TELE AID emergency call system (D2B)
MODEL 140 as of 1.1.98, 168, 202, 208.3, 210.0 as of 1.1.98, 210.2 with CODE (351) Auto pilot system
(APS)
MODELS 163,168, 208.3, 210 with CODE (353) Audio 30 APS

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MODELS 163, 208.3, 210, 220 with CODE (352a) COMAND operating and display system with CODE
(353) Audio 30 APS with CODE (853) MB standard CTEL telephone with CODE (854) MB portable
CTEL telephone with CODE (855) TELE AID
MODEL 163 with CODE (522) Modular control system (MCS) Radio USA
Location shown on model 210
Fig. 81: Identifying Telephone And GPS Roof Antenna

The telephone antenna (A2/49a1) and the GPS antenna (A2/49a2) are integrated in an antenna housing.
GPS/telephone roof
antenna, locationModels 129, 140, 168,
202, 208.3, 210GF82.70-P-4111-01A
Model 220GF82.70-P-4111-01B
Model 163GF82.70-P-4111-01GH
GPS/telephone roof
antenna, purposeReceiving and amplifying
the global positioning
system (GPS) satellite
signals as well as
transmitting and receiving
the mobile radio signals
(GSM 900 MHz).
GPS/telephone roof
antenna, designThe GPS/telephone roof
antenna (A2/49) consists

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MODULAR CONTROL SYSTEM (MCS), FUNCTION - GF82.85-P-0011GI
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
(819) 6-disk CD changer in trunk with CODE (491) U.S. version
The following systems can be operated centrally with the aid of the radio and navigation unit (A2/56) :
Cassette deck
Radio
Single CD player and CD player with changer (optional)
Sound system (optional)
Navigation (optional)
Telephone (optional)
Fig. 82: Identifying Radio And Navigation Unit
of two components:
CTEL antenna
(A2/49a1)
GPS antenna
(A2/49a2)
Model 163 as of 01.09.01GF82.70-P-4111-03GH
GPS/CTEL roof antenna,
functionCode 351 or code 353,
except models
129 /163 /220GF82.70-P-4111-04A
Code 353 for model 163GF82.70-P-4111-04D
Code 347 or 348 or 352
except models 168/163GF82.70-P-4111-04B
Model 163 as of 01.09.01GF82.70-P-4111-04GH

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The digital components of the radio and navigation unit (A2/56)are interlinked via the digital data bus
( D2B ). Control data, audio signals and other information are transmitted between the various system
components via the digital data bus ( D2B ) Since some of the individual components operate with various data
formats or place different requirements on the transmission speed and transmission security, various bus
systems are installed.
MODULAR CONTROL SYSTEM (MCS) FUNCTION DESCRIPTION CONTENTS - GF82.85-P-0995GIZ
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
(819) 6-disk CD changer with CODE (491) U.S. version
Switch on/off behavior,
function GF82.85-P-2006GI
Radio operation, function GF82.60-P-2001GI
CD-player mode, function GF82.60-P-2002GI
Telephone mode, function GF82.85-P-2007GI
Cassette mode, function GF82.85-P-2010GI
Navigation mode, function GF82.85-P-2012GI
Volume/tone adjustments,
function GF82.60-P-2003GI
Radio/navigation unit
location/task/design/ function GF82.61-P-4109GI
Modular control system (MCS),
function* for USA onlyGF82.85-P-0011GI
Switch on/off behavior,
function GF82.85-P-2006GI
Radio operation, function GF82.60-P-2001GI
CD-player mode, function GF82.60-P-2002GI
Telephone mode, function GF82.85-P-2007GI
Starguide, function GF82.85-P-2014GI
Information service, function GF82.85-P-3016GI
Data transmission for
Starguide, function GF82.85-P-3017GI
Cassette mode, function GF82.85-P-2010GI
Navigation mode, function GF82.85-P-2012GI
Voice output, function GF82.85-P-3001GI
Volume/tone adjustments,
function GF82.60-P-2003GI
Constant map matching,
function GF82.61-P-2002GI
Basic location finding, function GF82.61-P-3006GI

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CONTENTS, FUNCTION DESCRIPTION OF COCKPIT MANAGEMENT AND DATA SYSTEM (COMAND) - GF82.85-P-
0997GHZ
MODEL 163
Global positioning system
location finding, function GF82.61-P-3007GI
Map-supported location
finding, function GF82.61-P-3008GI
Route calculation, function GF82.61-P-3011GI
Dynamic route guidance,
function GF82.61-P-4003GI
Guidance, function GF82.61-P-3012GI
Destination guidance in
digitized map area, function GF82.61-P-4000GI
Destination guidance in non-
digitized map area, function GF82.61-P-4001GI
Modular control system (MCS)
survey of system components
location/task/design/ function GF82.85-P-9995GIZ
Cockpit management and data system
(COMAND) function GF82.85-P-0003GH
Switch-on/switch-off characteristics,
function GF82.85-P-2006GH
Radio operation, function GF82.60-P-2001GH
CD-player mode, function GF82.60-P-2002GH
Volume/tone adjustments, function GF82.60-P-2003GH
Navigation mode, function GF82.85-P-2012GH
Constant map matching, function GF82.61-P-2002GH
Basic location finding, function GF82.61-P-3006GH
Global positioning system location
finding, function GF82.61-P-3007GH
Map-supported location finding,
function GF82.61-P-3008GH
Route computation, function GF82.61-P-3011GH
Destination-finding system, function GF82.61-P-3012GH
Destination finding in digitized map
area, function GF82.61-P-4000GH
Destination finding in non-digitized
map area, function GF82.61-P-4001GH
Dynamic destination finding, functionWith dynamic
destination finding
(code 815) not for GF82.61-P-4003GH

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SWITCH ON/OFF BEHAVIOR, FUNCTION - GF82.85-P-2006B
MODEL 163, 168, 170, 203.0 /2 /7, 208, 209.3 /4, 210 with CODE (353) Audio 30 APS
ON/off characteristics
The radio (A2) is switched on by pressing the "ON" button. The radio (A2) likewise switches On automatically
by rotating the ignition key (models 163, 168, 170, 208, 210) or transmitter key (A8/1) (models 203, 209) into
position 1 "circuit 15R ON", provided that it was switched on immediately before the last time "circuit 15R
ON" was switched off. However, if the radio (A2) was switched off last, only the following components are
activated with "circuit 15R ON":
Digital databus (D2B)
Continuous location finding
In this case the display on the radio (A2) remains Off. This allows quick availability of the system when the
"ON" button is then actuated.
Following each switch-on operation, the system returns to the state in which it was before it was last switched
off (e.g. navigation basic menu).
The bus systems and navigation processor for location finding (for quicker readiness for operation) are
already activated when the driver door is opened.
Switch off characteristics
The system is switched off by switching off at the "ON" button or when "circuit 15R ON" is switched off.
The unit switches off automatically after an hour, if when switching on the ignition key (models 163, 168, 170,
208, 210) or transmitter key (A8/1) (models 203, 209) has not been inserted in the ignition switch.
Run-on time/navigation

CTEL mode, functionFor MB CTEL
standard (code 853)
or MB portable
CTEL (code 854).GF82.85-P-2007GH
Voice command, function GF82.85-P-3001GH
Table of contents, function description
of antenna system (ATS) GF82.62-P-0999B
Overview of system components for
cockpit management and data system
(COMAND ),
location/task/design/function GF82.85-P-
9997GHZ

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The data on the current navigation are stored for 12 hours after the radio (A2) is switched off.
SWITCH-ON/OFF CHARACTERISTICS, FUNCTION - GF82.85-P-2006GI
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
Switch-on characteristics
Activation of entire system
When the ignition/starter switch is turned to position 1(c.15R, ON ) the display is switched on , if the radio
and navigation module (A2/56) has been switched on before the ignition key was removed the last time.
The radio and navigation module (A2/56) is now ready for operation. The system active before the last
switch-off (e.g. radio) is switched on and the corresponding basic menu displayed. If the radio and navigation
module (A2/56) has been switched off for longer than 60 min a warning display appears with general
specifications for using the system.
When a telephone call is received the radio and navigation module (A2/56) switches on automatically.
Behavior when rotary knob is pressed
The radio and navigation module (A2/56) can also be switched on the when the remote control ke
y (A8/1) is
removed by actuating the rotary knob.
All functions are then available for 60 min . After expiration of 60 min the radio and navigation module
(A2/56) switches off automatically.
This function can only be repeated by actuating the rotary knob again.
Switch-off characteristics
The radio and navigation module (A2/56) can be switched off by turning the ignition key to position 0 c. 15C,
OFF ).
Radio operation, function GF82.60-P-2001B
CD-player mode,
function GF82.60-P-2002B
Telephone mode,
functionModel 209GF82.85-P-2007QA
Navigation mode,
functionModel 163, 168,
170,208,210GF82.85-P-2012B
Model 203, 209GF82.85-P-2012EE

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