1997 MERCEDES-BENZ ML500 ad blue

137 Controls in detail
Automatic climate control
Automatic mode
Switching on
Briefly press buttonU
(page 135).
The indicator lamp comes on. The tem-
perature, air volume and distribution
are controlled automatically.

Adjust the temperature with the tem-
perature control4 (
page 135).
Temperature control is switched off in
the extreme position (blue or red dot).
Switching off

Briefly press buttonU
(page 135).
The indicator lamp goes out. The auto-
matic mode is switched off.
Air volume control1 is set to fan
speed 2 and air distribution is set
toV.Activating basic setting

Press buttonU at least
three seconds.
All functions are switched to automatic
mode and temperature is set to 72°F
(22°C).
Changing basic setting

Set temperature control4
(page 135) to desired temperature.

Press buttonU for ten seconds.
The selected temperature value is
stored and set.Adjusting air volume and air distribu-
tion manually
Adjusting air volume
Turn air volume control1 to one of
five air volume settings.
iAdjust temperature settings in small
increments.
iIf you turn air volume control1 or air
distribution control8 (
page 135),
the automatic mode switches off. The
indicator lamp in the buttonU goes
out. The temperature control will still
be in automatic mode.
iWhen set to 0 the system is fully deac-
tivated and no fresh air is supplied. This
setting should only be selected for
short periods of time.

Fig. 6: Identifying Fiber Optic Cable Components Location
FIBER OPTIC CABLE, FUNCTION - GF82.00-P-4000-04A
The fiber optical cable consists of plastic with a fiber diameter of 1 mm. Each fiber optical cable is protected
against mechanical damage and against admission of outside light with the help of an orange-colored insulation.
The light for the data transfer in the digital data bus (D2B) has a wavelength of 650 nm; by comparison, visible
light lies in the range of blue with 400 nm to red with 800 nm. Optical attenuation of the light signal can occur
in the fiber optic cable. Attenuation of the optical signal in the fiber optical cable is dependent on:
the length of the line between the individual components
the bending radii when routing the fiber optical cable, which must have min. bending radius = 25 mm
the condition of the insulation of the fiber optical cable
A passive connector; this is used when a component is removed from the digital data bus (D2B) due to a
fault.
To ensure the functional availability of the remaining components, the digital data bus (D2B) is closed again
using a passive connector. The fiber optical cable has two different connection ends:
The fiber optical cable input, which is the output to each control unit. This is marked in "white".
The fiber optical cable output, which is the input to each control unit. This is marked in "red".
FIBER OPTIC CABLE, LOCATION/TASK/FUNCTION - GF82.00-P-4000A
MODEL 129 as of 1.6.98, 163, 168 as of 1.9.98, 170, 202 as of 1.6.98, 203, 208.3, 210 as of 1.6.98, 215, 220

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:04 PMPage 14 © 2006 Mitchell Repair Information Company, LLC.

DVD drive and DVD
The DVD drive of the radio (A2) reads data from the navigation DVD inserted and makes this available to the
navigation processor via the data bus inside the device.
Audio CDs can also be played.
The following are located on the navigation DVD:
Program data for the navigation computer
Voice segments for voice output
Map data.
A distinction is made between digitized and non-digitized areas within the DVD map area:
Villages, towns, roads, intersections and their attributes (e.g. one-way streets, no turns etc.) are recorded
in the digitized map area.
Included in the non-digitized areas are, for example company/private grounds, farms, small housing
estates, tracks across fields and areas between villages.
No data is available here.
Diagnosis interface (K-line) and fault management of D2B-components
During operation, the system stores all occurring faults in the nonvolatile memory. It is not possible to output
the fault via the display of the radio (A2).
The radio's (A2) fault management also includes the D2B-components connected. For this purpose, each D2B
component has its own DTC memory. The faults are transmitted from the corresponding components via the
D2B to the radio (A2) and can then be read out via the diagnosis interface
RADIO AND NAVIGATION MODULE, FUNCTION - GF82.61-P-4109-04GI
Processing button actuations
The control buttons and switches on the function keypad on the radio and navigation module (A2/56)are read
in via the I/O ports of the microcontroller and transferred to the central processor. Depending on the system
function the button actuations are processed in the central processor or relayed to the other system components
via the digital data bus ( D2B ) in form of a data telegram.
Graphic preparation and image output
The graphics subsystem handles the preparation and output of the operating displays. The operating displays are
output internally to the display by the graphic subsystem via the RGB output ( R =red, G =green, B =blue).
The RGB signal contains information and amplitudes of the three basic colors Red, G reen and Blue as well

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:05 PMPage 102 © 2006 Mitchell Repair Information Company, LLC.

Fig. 230: Identifying CAN Bus Adapter And Adapter Wiring Harness
7. Position CAN bus adapter mount on st rut of center console and mark hole pattern (arrows) as shown in
figure.
8. Drill 6.2 mm dia. mounting holes.
Fig. 231: Locating Hole Pattern

9. Fasten CAN bus adapter (5) with self-tappi ng screws from CAN bus adapter parts kit.
Fig. 232: Identifying CAN Bus Adapter

10. Install white (ws) and blue (bl) fuse on transfer case control module (N78) from CAN bus wiring harness
(9) as shown in figure.

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electr ical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:10 PMPage 329 © 2006 Mitchell Repair Information Company, LLC.

3. Route front part (6, 8, bl, rs) of wiring harness (1) of illuminated door sill moldings from left footwell to
fuse and relay module (F1).
Fig. 247: Identifying Relay Module, AAV Module And Connector

4. Pull gray 24-pin connector (3) off AAV module (N10).
5. Take blue cable (b) of left front door rotary tumbler out of chamber A8 and red cable (a) of right front
door rotary tumbler out of chamber B11 of connector (3).
6. Insert blue cable (b) into chamber 1 and red cable (a) into chamber 2 of the 4-pin coupling.
While this is done, the blue cable is then connected to the blue cable and the pink cable to the red
cable.
7. Connect 4-pin coupling to connector (8) of wiring harness of illuminated door sill molding.
Only if coupling is not already fitted to the connector (8).
Fig. 248: Identifying Blue Cable, Red Cable And Connector

8. Insert blue cable of left illuminated door sill molding (bl) into chamber A8 and pink cable of right
illuminated door sill molding (rs) into chamber B11 of 24-pin coupling (3).
9. Connect couplin
g (3) to AAV module (N10).

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:11 PMPage 342 © 2006 Mitchell Repair Information Company, LLC.

Fig. 256: Identifying Longitudinal Wedge (115 589 03 59 00)
Commercially available tools
Parts ordering notes
RETROFIT CENTRAL INTERFACE MODULE - AZ82.60-P-0004-01A
sill molding to coupling
(5) of wiring harness (1)
15Clip illuminated door sill
moldings into door sill
trim Ensure that the door
sill moldings are not
installed on the wrong
sides and that the wiring
harness is not pinched by
the door sill molding.
16Stick rear door sill
moldings onto standard
moldings Only in the case of 4-
part "AMG" parts kit.
17Carry out operational
check
18Assemble in reverse
order
NumberDesignation
WH58.30-Z-1012-09AQuiescent current retention unit
Part no.DesignationQuantity
B6 689 00 31Illuminated door sill moldings
with wiring harness (2-part with
"Mercedes-Benz" logo)1
B6 602 10 18Illuminated door sill moldings
with wiring harness (4-part with
"AMG" logo)1
B6 689 00 16Lighting film, blue1
B6 689 00 17Lighting film, green1
B6 689 00 18Lighting film, yellow1

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:11 PMPage 348 © 2006 Mitchell Repair Information Company, LLC.

Fig. 292: Identifying Rear Air Duct, Self-Adhesive Foamed Material And Auxiliary Interface
Module
13. Secure wiring harness for auxiliary interface module (8) with tie straps (12) to wiring harness of the rear
power window (11).
White adhesive tape marks identify position of the tie straps.
14. Secure video player wiring harness with blue color coding (4) and DVD player wiring harness with red
color coding (5) with self-adhesive brackets (13) and tie straps at the 60% rear seat.
The white strips of adhesive tape on the wiring harness for video player (4) and the red strips of
adhesive tape on the wiring harness for DVD player (5) identify the location for the brackets and tie
straps.

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:12 PMPage 378 © 2006 Mitchell Repair Information Company, LLC.

Fig. 293: Identifying Self-Adhesive Brackets, Blue Color Coding And Red Color Coding
RETROFIT WIRING HARNESS FOR AUXILIARY INTERFACE MODULE AND VIDEO/DVD PLAYER - AZ82.60-P-0004-03B
Models 163.113/154/174#A as of 289565, Model 163.113 #X as of 754620, Model 163.128/157/175
1. Make diagonal cut (a=50 mm) to floor lining of right rear corner of rear blower motor (M2/1).
Fig. 294: Identifying Rear Blower Motor, Cutout In Floor Lining And DVD Player Wiring Harness
2. Measure dimension (b=510 mm) from center of rear blower motor (M2/1) and dimension (c=120 mm)
from inner edge of cutout in floor lining under the 40% rear seat and mark the floor lining.

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:12 PMPage 379 © 2006 Mitchell Repair Information Company, LLC.