Mercedes-Benz ML320. Service manual - part 246

Fig. 72: Identifying Roof Antenna 

SURVEY OF SYSTEM COMPONENTS FOR ANTENNA SYSTEM (ATS), LOCATION/ TASK/DESIGN/FUNCTION - GF82.62-
P-9999GHZ 

MODEL 163 as of 1.9.01  

 

Telephone antenna, 
location

The roof antenna (A2/22) is located in 
the rear area of the vehicle roof.

 

 

Telephone antenna, 
purpose



Conversion of electromagnetic 
radio waves into electrical 
voltages and vice versa  



Transmitting/receiving telephone 
signals (data and voice output)  



Lobar bundling of the 
transmission energy  



Detecting the matching frequency 
range  

 

 

Rear window antenna, 
location/task/design/ function

 

GF82.62-P-3106GH

 

FM/AM antenna amplifier, 
location/task/design/ function

 

GF82.62-P-4101A

 

Telephone antenna, 
location/task

 

GF82.62-P-4105GH

 

GPS/telephone roof antenna, 
location/task/ design/function

 

GF82.70-P-4111A

 

E-Call backup antenna, 

 

GF82.95-P-4205GH

 

2001 Mercedes-Benz ML320 

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

  

me 

 

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 

 

The laser-optical device scans the non-labeled side of the rotating CD without 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, 
location

The CD player with 
changer (in the trunk) 
(A2/6) is located in the 
trunk near the left side 
wall.

 

 

 

Model 163

GF82.64-P-3113-01GI

 

 

Models 208, 210

GF82.64-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 

 

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 498

GF82.64-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, 
function

Models 208, 210

GF82.64-P-3113-02C

 

 

Model 215, 220

GF82.64-P-3113-02B

 

2001 Mercedes-Benz ML320 

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

  

me