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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
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Page 1618 of 4133

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,
purposePlaying audio
compact discs (CD)
Changing CDs
contained in the
magazine
CD player with changer,
design6-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
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Page 1619 of 4133
Fig. 75: Identifying CD Player With Changer
GPS/CTEL ROOF ANTENNA, LOCATION - GF82.70-P-4111-01GH
Model 163
Location, illustration valid up to 31.08.01:
The CTEL and GPS roof antenna (A2/49) is mounted on the rear of the roof in the middle of the vehicle.
CD player with changer,
location GF82.64-P-3113-01GI
CD player with changer,
purposePlaying audio
compact discs (CD).
Changing CD's
contained in the
magazine
CD player with changer,
designCD changer
magazine for 6 CD's
Digital data bus
(D2B) interface
The installation position
of the CD changer
predefined by the factory
is vertical, however
another installation
location is also possible
by adapting the spring
location
CD player with changer,
function GF82.64-P-3113-02GI
2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
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Page 1620 of 4133
Fig. 76: Identifying CTEL And GPS Roof Antenna (31.08.01)
Location, illustrati on valid as of 01.09.01:
The CTEL and GPS roof antenna (A2/49) is moun ted in the rear area of the vehicle roof.
Fig. 77: Identifying CTEL And GPS Roof Antenna (01.09.01)
Illustration shows model 163 up to 31.8.01 :
2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electr ical System - Body - 163 Chassis
me
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Page 1621 of 4133
Fig. 78: Identifying CTEL And GPS Roof Antenna (31.8.01)
Illustration shows model 163 as of 01.9.01 :
Fig. 79: Identifying CTEL And GPS Roof Antenna (01.9.01)
GPS/CTEL ROOF ANTENNA, DESIGN - GF82.70-P-4111-03GH
Model 163 as of 01.9.01
2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electr ical System - Body - 163 Chassis
me
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Page 1622 of 4133

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
2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
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Page 1623 of 4133

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
2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
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Page 1624 of 4133

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
2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
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