radio code MERCEDES-BENZ ML320 1997 Complete Repair Manual

DISABLING SYSTEM
Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Record radio presets and obtain anti-theft
code. Turn ignition switch to OFF position and remove ignition key. If welding on vehicle, disconnect negative
battery cable and disconnect air bag control module.
ACTIVATING SYSTEM
Ensure ignition is off. Reconnect air bag system co mponents (if disconnected). Reconnect negative battery
cable. Perform See SYSTEM OPERATION CHECK
.
DISPOSAL PROCEDURES
Several situations may arise requiring so me form of disposal action, including:
Scrapping a vehicle containing a deployed air bag module and-or ETR.
Scrapping a vehicle with a live air bag module and-or ETR.
Disposal of a live but electrically faulty air bag module and-or ETR.
Disposal of a deployed air bag module and-or ETR.
DEPLOYED AIR BAG OR ETR
Deployed air bag module and-or ETR unit can be thrown away. None of its components are reusable. Deployed
air bag module is NOT classified as hazardous material.
SCRAPPED VEHICLE
1. Before proceeding, follow service precautions. See AIR BAG SAFETY PRECAUTIONS . Move
vehicle outdoors to a remote area, away from work shop and other personnel. Disconnect and shield
negative battery cable. Open al l vehicle windows and doors.
2. Ensure air bag module is secured to steering wheel, and passenger air bag is secured to dash. Ensure ETR
seat belt assemblies are secured to "B" pillars and all seat belt buckles are latched. Remove loose ob
jects
CAUTION: On CL500, open doors before
disconnecting battery. Opening doors
allows windows to automa tically lower thus preventing roof seal damage.
WARNING: An undeployed air bag module or ET R should never be disposed of
without first being deplo yed. See SCRAPPED VEHICLE
. If deployment is
not possible, contact vehicle manuf acturer for further instructions.
WARNING: An undeployed air bag m odule and-or ETR seat belt CANNOT be disposed
of without first being de ployed. If this is not possible through procedures
outlined below, contact vehicle ma nufacturer for further instructions.
Perform remote deployment outdoors . Keep personnel at least 20 feet
away.

2001 Mercedes-Benz ML320
2000-01 ACCESSORIES/SAFETY EQUIPMENT Merc edes-Benz - Air Bag Restraint Systems
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184 Controls in detailUseful featuresStep 9:
Press “training” button on the garage
door opener motor head unit.
The “training light” is activated.
You have 30 seconds to initiate the follow-
ing step.
Step 10:

Firmly press, hold for two seconds and
release the programmed integrated
signal transmitter button (3, 4
or5).
Step 11:

Press, hold for two seconds and re-
lease same button a second time to
complete the training process.
Some garage door openers (or other rolling
code equipped devices) may require you to
perform this procedure a third time to
complete the training.Step 12:

Confirm the garage door operation by
pressing the programmed integrated
signal transmitter button (3, 4
or5).
Step 13:

To program the remaining two buttons,
repeat the steps above starting with
step 3.Gate operator / Canadian programming
Canadian radio-frequency laws require
transmitter signals to “time-out” (or quit)
after several seconds of transmission
which may not be long enough for the inte-
grated signal transmitter to pick up the sig-
nal during programming. Similar to this
Canadian law, some U.S. gate operators
are designed to “time-out” in the same
manner.
If you live in Canada or if you are having dif-
ficulties programming a gate operator (re-
gardless of where you live) by using the
programming procedures, replace step 4
with the following:


Fig. 4: Removing & Installing Transmission With Torque Converter
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Remove/Install -
1 - Disconnect ground cable of battery. See DISCONNECT GROUND LEAD FROM BATTERY
.
2 - Remove transfer case. See TRANSFER CASE .
3 - Unbolt oil filler pipe (3) from crankcase. See Fig. 4
.
4 - Remove heat shield (5) and disconnect 13-pin plug connector (2).
5 - Remove locking clips (21) and remove shift.
6 - Unscrew oil drain screw on oil pan (14).
7.1 - Unscrew oil drain screw for torque converter (15).
8.1 - Detach wire for park lock interlock (7) at transmission.
9 - Lambda sensors for primary catalytic converters remove.
10 - Unscrew oil lines (4) to oil cooler from transmission.
11 - Remove cover in oil pan (18) and disconnect torque converter from driven plate at flange.
12 - Unscrew bolts of transmission (19) at crankcase and take out transmission downwards at an angle
using a lifting device. NOTE: Code radio, set clock, normalize power windows and set timer in vehicles
with stationary heater.
NOTE: Adjust shift rod using pliers. See Fig. 10
.
NOTE: If the transmission fluid is burnt or contains wear particles, the oil cooler
lines and oil cooler must be flushed out: Flush oil cooler and oil cooler
lines.
NOTE: Only up to A145272,X708318. For installation and removal, position
selector lever or range selector lever in position "P" and leave in position
"P" when cable/transmission is removed. See REMOVING & INSTALLING
WIRE CABLE/TRANSMISSION FOR PARKING SHIFT LOCK ON
TRANSMISSION.
NOTE: Only up to A145272, X708318.
Upon Installation: Adjust cables for parking shift lock. See ADJUSTING
WIRE CABLES FOR PARKING LOCK INTERLOCK.
NOTE: Upon Installation: Check function of parking shift lock.

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Connect ground cable.
4 - Code radio.
5 - Set time at instrument cluster
6.1 - Activate steering angle sensor.
7.1 - Synchronize tilt/slide sunroof.
8.1 - Synchronize lamella (thin plate) sliding roof.
9.1 - Synchronize power windows.
Torque Specification; Nut Of Ground Cable To Body NOTE: After opening the vehicle wait for at least 4 minutes before disconnecting
the battery otherwise the alarm will be triggered.
NOTE: Model 163: Tighten the nut (5) of the ground line (1) to the specified
torque. Perform work described below only when quiescent current
retention unit was not connected. Model Series 163 see Torque
Specification; Nut Of Ground Cable To Body.
NOTE: MB (models 163).
Hi-Line, premium with Bose (model 163).
NOTE: If necessary set time at stationary heater timer.
NOTE: Model 163 with Code 414.
Open tilt/slide sunroof and hold down switch. Sliding/pop-up roof
mechanism moves to end position, pulls back 1/4 turn and stops.
NOTE: Open tilt/slide sunroof and hold down switch. Sliding/pop-up roof
mechanism moves to end position, pulls back 1/4 turn and stops.
NOTE: Model 163 as of VIN A289565, X754620.
Press power windows switch up to the 1st pressure point and, after
reaching the upper end position of the window, keep pressed for further 5
seconds.
NumberDesignationModel Series 163
BA54.10--P-1001--01ANut of ground cable to bodyNM18

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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1998-2005 ACCESSORIES & BODY, CAB
Electrical System - Body - 163 Chassis
GENERAL INFORMATION
GENERAL NOTES: PASSENGER CARS: ELECTRICAL SYSTEM BODY - AH82.00-Z-9999AZ
MODEL all
Adjusting headlamps when
driving abroadMODEL 452.3 /4AH82.10-P-0001-
01RR
Adjusting headlamps when
driving abroadMODEL 450.3 up to
10.2.02AH82.10-P-0001-
01SM
Adjusting headlamps when
driving abroadMODEL 450.3 as of
11.2.02, 450.4 (except
450.418)AH82.10-P-0001-
01SN
Notes on wiper arm
adjustmentMODEL 164, 251AH82.30-P-0001-
01GZ
Notes on radio installationMODEL 169,245...AH82.60-P-0001-
03AK
Notes on D2B ringMODEL 215.###, 220.###
1# as of 1.9.02 with CODE
(803) Model year 2003AH82.70-P-0001-
03MN
Notes regarding the Tele-Aid
emergency call systemMODEL 215, 220 with
CODE (347) TELE AID
emergency call system
(D2B) with CODE (855)
TELE AIDAH82.95-P-0001-
01AM
Adjusting headlamps when
driving abroadMODEL 199AH82.10-P-0001-
01SLR
Notes on navigation system
TrafficStarMODEL 129, 140, 163,
168, 170, 202, 208, 210AH82.61-P-0001-03A
Notes on telephone operation
with Audio 30 APS
navigation systemMODEL 129, 163, 168,
170, 202, 208, 210 ...AH82.61-P-0001-06A
Notes on Traffic Pro
navigation systemMODEL 129, 140, 163,
168, 170, 202, 208, 210AH82.61-P-0002-01A
Notes on D2B ringMODEL 129...AH82.70-P-0001-03D
Notes on Linguatronic voice
control systemMODEL 220 ...AH82.70-P-0001-
06CM
Notes on converting portable
cellular telephone installation
kitMODEL 129, 168, 170,
202, 208, 210, 215, 220...AH82.70-P-0001-08A
Information on Tele Aid MODEL 140.###1#, 210 AH82.95-P-0001-01A

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

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
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emergency call systemwith CODE (348) TELE
AID emergency call system
Notes regarding the taxi
emergency call systemMODEL 140,202,210,220...AH82.95-P-0002-01A
Adjusting headlamps when
driving abroadMODEL 164, 169, 171,
203, 209, 211, 215, 216,
219, 220, 221, 230, 245,
251 ...AH82.10-P-0001-01A
Adjust headlamps when
driving abroadMODEL 454.0AH82.10-P-0001-
01FF
Adjusting headlamps when
driving abroadMODEL 451.3/4AH82.10-P-0001-
01MCC
Retrofitting xenon headlampsMODEL 129, 140, 202,
210, 220 ...AH82.10-P-1003-01A
Retrofitting xenon headlampsMODEL 210.###1# as of
1.7.99AH82.10-P-1003-01F
Notes on retrofitting xenon
headlampsMODEL 203AH82.10-P-1003-01P
Notes on installing taxi/rental
vehicle equipmentMODEL 245 ...AH82.25-P-0001-
01BK
Notes on installing rental
vehicle equipmentMODEL 221.0##/1##1#
except CODE (498) Japan
version except CODE (494)
USA versionAH82.25-P-0001-
02SX
Notes on mirror taximeterMODEL 202, 203.0, 210,
220 with CODE (450) Taxi
versionAH82.25-P-1000-02P
Notes on wiper arm
adjustmentMODEL 171.4, 203, 209,
211, 215, 220, 230, 240AH82.30-P-0001-01A
Notes on wiper arm
adjustmentMODEL 129,202,208,210AH82.30-P-0001-01B
Notes on wiper arm
adjustmentMODEL 219.3AH82.30-P-0001-
01TX
Notes on COMAND
software statusMODEL 215, 220 with
CODE (352a) COMAND
operating and display
system bei APS der 3.
GerategenerationAH82.60-P-0001-01A
Notes on radio installationMODEL 203 ...AH82.60-P-0001-03P
Notes on removal/installation
of the fiber optical cable for
the Media Oriented System
Transport (MOST)MODEL 211.0/2AH82.60-P-0001-06T
Notes on auto-pilot systemMODEL 170AH82.61-P-0001-01A

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
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Notes on auto-pilot systemMODEL 129,208.4AH82.61-P-0001-01B
Notes on auto-pilot systemMODEL
202.018/02 /12/13, 208.3,
210.0AH82.61-P-0001-01C
Notes on auto-pilot systemMODEL 203 Navigations
system APS 30AH82.61-P-0001-01P
Notes on positioning GPS
antenna, TrafficStarMODEL 210 with CODE
(581a) Automatic air
conditioning MODEL 140AH82.61-P-0001-02A
Notes on dynamic guidance
for APSMODEL 129, 140, 168,
170, 202, 208, 210 bei APS
der 3. GerategenerationAH82.61-P-0001-04A
Notes on dynamic guidance
for APSMODEL 220 ...AH82.61-P-0001-04B
Notes on dynamic navigation
for APSMODEL 215,220...AH82.61-P-0001-04C
Notes on radio connector pin
assignmentMODEL 163AH82.61-P-0001-05A
Notes on TV antenna in rear
windowMODEL 210.0 as of 1.7.99AH82.62-P-0001-01A
Retrofitting voice control
systemMODEL 210.### 1#AH82.70-P-0001-01A
Notes on D2B ringMODEL 210...AH82.70-P-0001-03A
Notes on D2B ringMODEL 210...AH82.70-P-0001-03B
Notes on D2B ringMODEL 210...AH82.70-P-0001-03C
Notes on D2B ringMODEL 202 ...AH82.70-P-0001-03E
Notes on D2B ringMODEL 202 ...AH82.70-P-0001-03F
Notes on D2B ringMODEL 170...AH82.70-P-0001-03G
Notes on D2B ringMODEL 208 ...AH82.70-P-0001-03H
Notes on D2B ringMODEL 208 ...AH82.70-P-0001-03I
Notes on D2B ringMODEL 215, 220AH82.70-P-0001-
03IA
Notes on D2B ringMODEL 168...AH82.70-P-0001-03J
Notes on telephone
retrofittingMODEL 129, 168, 170,
202, 208, 210 ...AH82.70-P-0001-04A
Notes on retrofitting
telephoneMODEL 129, 168, 170,
202, 208, 210 as of 1.7.00
up to 30.6.01 except CODE
(855) TELE AIDAH82.70-P-0001-04B
Notes on retrofitting
telephoneMODEL 215, 220 as of
1.7.00 up to 30.6.01 except
CODE (855) TELE AIDAH82.70-P-0001-04C
Notes on telephone MODEL 215,220...AH82.70-P-0001-10A

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
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Notes on installation of GPS antenna
The GPS antenna should be installed only in a vertical position with a maximum deviation of 10° from
horizontal.
The GPS antenna should always have a free view of the sky. Thermal insulated windows can significantly
reduce the function of the GPS antenna.
When installing the GPS antenna, always ensure that the arched surface points away from the vehicle.
Changing the installation location inside of the vehicle after the system is put into operation has no effect on the
GPS reception.
NOTES ON RADIO CONNECTOR PIN ASSIGNMENT - AH82.61-P-0001-05A
Model 163
The pin assignment in the radio connector has been changed on vehicles as of 07.99 (model year 2000)
Fig. 1: Identifying Radio Connector Pin Assignment

Check pin assignment
If the pin assignment is the same as listed in the table above, it is not necessary to install the adapter
wiring harness and CAN bus adapter when installing the Audio 30 APS navigation system.
NOTES ON TELEPHONE OPERATION WITH AUDIO 30 APS NAVIGATION SYSTEM - AH82.61-P-0001-06A
Models 129, 163, 168, 170, 202, 208, 210
Vehicles with telephone code 316 or 317 can be retrofitted with an Audio 30 APS navigation system.
Ensure that the Audio 30 APS navigation system is a unit with part number A 208 820.....Older units with part
number A 168 820 .. .. are not capable of assuming the master function in the D2B- ring.


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1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
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Fig. 5: Identifying Digital Data Bus (D2B), Function
Digital Data Bus (D2B)
The Digital Data Bus (D2B) is a data transmission system for the communication and information components,
which utilizes the optical data transfer options. Data transfer is conducted by means of optical pulses, which are
transferred over fiber optical cables to the connected communication and information components. Audio and
command signals are converted in the source components into optical pulses and transmitted via fiber optical
cables. The optical signal is converted back to an electronic signal in the target component. Because of the high
transfer rate, the Digital Data Bus (D2B) can transfer audio and command signals simultaneously. Simultaneous
transfer of source data and command data over the Digital Data Bus (D2B) significantly reduces the amount of
cabling. The connected components require 2 lines for the voltage supply (electrical) and 2 lines (input/output)
for the fiber optical cable of the Digital Data Bus (D2B) and one line for the wake-up signal (electrical).
In addition to this the fiber optical cable can transfer several pieces of source data simultaneously (e.g. music
and voice from 2 components), without compromising the data content.
Functional sequence on example of "Play CD" on model 220
Pressing "Play" on the radio (A2) sends a command signal over the Digital Data Bus (D2B) to the CD player
with changer (in trunk) (A2/6), for vehicles with code (819) 6-disc CD changer. The audio signals from the CD
player with changer (in the trunk) (A2/6), for vehicles with code (819) 6-disc CD changer, are then sent over the
Digital Data Bus(D2B) as source data to the Sound amplifier (A2/13), or for vehicles with code (810) to the
sound system. The target components, the Sound amplifier (A2/13), or for vehicles with code (810) the sound
system, the source data are then converted back to electrical signals and reproduced as sound.
Data transfer using fiber optic cables has the following advantages:
Extremely high data transmission rate
Prevents tapping and cross talk
Insensitive to electromagnetic radiation

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
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Short-circuit resistance
Zero potential connection of components
No oxidation
Low weight of fiber optical cable
Minimum diameter of wiring harness
The digital data bus (D2B) has a closed ring structure. The communication and data components are arranged
here in a distributor line (in-series circuit). This arrangement is type specific and is illustrated by way of an
example on model 220 as follows:
Radio (A2)
CD player with changer (in trunk) (A2/6), with code (819) 6-disc CD changer
Sound amplifier (A2/13), with code (810) Sound System
Voice control system control unit (A35/11), with code (813) voice control system (VCS)
Telephone and TELE AID transmitter/receiver, D2B (A35/17), with code (855) TELE AID
Data transfer is conducted here in one direction only, i.e. the optical pulses for the voice control system control
unit (A35/11), for vehicles with code (813) voice control system (VCS), on model 220 pass through all
components connected to the ring, before arriving at the target components.
When the system is first put into operation, a system test is performed. In doing so the individual components
and their sequence in the ring structure of the Digital Data Bus (D2B) are registered by the component with the
master function.
A type-specific sequence is stored ex-factory. In turn, the storing of a sequence ex-factory means: if the radio
(A2) is taken from one model series and installed into another one, then during a system test the different
sequence of the components and an error message are filed in the diagnostic trouble code memory.
An error message is also filed if the radio (A2) is exchanged within a model series with different equipment
components. The system goes to the operational state regardless of the error message. STAR DIAGNOSIS
enables the sequence of the components to be subsequently altered in the Digital Data Bus (D2B).
The Digital Data Bus (D2B) is diagnosis capable via the data link connector (X11/4), except for models 129
and 202.
The operating principle of the Digital Data Bus (D2B) is the same for all model series; all that changes is the
sequence of components depending on the national version and equipment specification.
TABLE OF CONTENTS, FUNCTION DESCRIPTION OF DIGITAL DATA BUS (D2B) - GF82.00-P-0999ZZ
MODEL 129 as of 1.6.98, 163, 168 as of 1.9.98, 170, 202 as of 1.6.98, 203, 208, 210 as of 1.6.98, 215, 220
Data transfer, function GF82.00-P-2000A

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