1997 MERCEDES-BENZ ML350 light

XENON HEADLAMPS, FUNCTION - GF82.10-P-2007-01GHA
The lighting technology, known as bi-xenon 70 , is located in the outer headlamps.
When the low beam lamps are switched on the xenon headlamp control module (E1 n1, E2n1) activates the
xenon headlamp control module and ignition module (E1n2, E2n2) via the control voltage within a few
milliseconds.
A high-voltage surge from the ignition device ignites the xenon lamps, and in doing so an electric arc is formed
between the electrodes. When an arc of sufficient stability is detected, the control electronics of the control
module (E1 n1, E2n1) switches over to power-limiting mode.
The light generated previously in a gas discharge lamp (D2S lamp) is not reflected in bi-xenon 70 headlamps,
but instead it is sent directly through a lens optical system with a lens diameter of 70 mm.
Using the mask (B), which is positioned between the gas discharge lamp and the lens optical system, the beam
of light is partially masked for the low beam so that oncoming traffic is not blinded.
For the high beam, the mask (B) is electro-mechanically folded to the side using the solenoid (M).
If the solenoid (M) should fail or a supply line breaks, the mask (B) remains mechanically held in the low
beam position, always between the gas discharge lamp and the lens optical system.
In order to make the extremely bright light more acceptable to other road users, the lens aperture area with its
dotted characteristic is optically enlarged.
This is possible on account of the specially formed areas which surround the lens. In addition, the light can pass
through a number of chrome-plated strips from the rear. A portion of the diffused light is intercepted by the
lower section of the surface area and reflected to the upper section of the chrome-plated longitudinal strips.

For technical reasons the xenon lamp has a timed startup characteristic. After switch on, 50 % of the luminosity
is reached within 1 to 2 seconds and full luminosity is achieved after another approx. 30 seconds.
XENON HEADLAMP, LOCATION/DESIGN/FUNCTION - GF82.10-P-2007GH
MODELS 163.113 /136 /154 /172 up to 31.08.01 with CODE (612b) xenon headlamp unit with CODE
(U47) conversion package
MODELS 163.174 up to 31.08.01, 163.113 /128 /136 /154 /172 as of 01.09.01
Design:
From model
year 2002 (as of 1.9.01) the xenon headlamps are installed as standard.

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:04 PMPage 21 © 2006 Mitchell Repair Information Company, LLC.

Fig. 11: Identifying Xenon Headlamp Components Location/Design
AUTOMATIC DRIVING LIGHT ACTUATION, FUNCTION - GF82.10-P-3003GH
MODEL 163 as of 01.09.01
The Automatic Driving Light Actuation automatically switches on the driving lights (side lamps, low beams
and license plate lamps), depending on the exterior lighting conditions (rain, snow, dusk and darkness).
Function prerequisites:
Exterior lamp switch in "AUTO" position
Circuit 15 "ON"
The sun sensor (B32) signals "Darkness" or the rain sensor (B38) signals "Rain"
Basic prerequisites for automatic driving light actuation are:
diminishing daylight intensity at dusk
darkness (tunnel, underground garage, ...)
rain or snowfall and
failure of rain/sun sensor ("Darkness" is signaled continuously)
Xenon headlamps,
function GF82.10-P-2007-
01GHA

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:04 PMPage 23 © 2006 Mitchell Repair Information Company, LLC.

Fog and other lighting influences, e.g., due to oncoming traffic, do not have any effect on the automatic
driving light actuation.
Automatic driving light actuation when starting a journey and during it
Automatic driving light actuation with driving lights is only possible when the engine is running (circuit
61 ON).
When the engine is switched off and the electronic starter switch is in position "2" (circuit 15 ON) only
the side lamps and the license plate lamps are actuated.
Driving light actuation is disabled as soon as one of the basic prerequisites changes, e.g. when changing
from darkness to daylight after driving through a tunnel.
Automatic driving light actuation at the end of a journey or in darkness
After switching off the engine (circuit 61 OFF) and when the electronic starter switch is in position
"2" (circuit 15 ON), only the side lamps and the license plate lamps remain on.
The exterior lighting is switched off as of key position "1" (circuit 15R).
DAYTIME RUNNING LIGHT ACTUATION, FUNCTION - GF82.10-P-3005GH
MODEL 163 as of 01.09.01
With daytime running lamps the low beam, the side lamps and the license plate lamps are switched on if the
engine is running (there are national variants).
Function prerequisites:
Circuit 61 "ON"
In "AUTO" position of the exterior lamp switch daytime running lamps and automatic driving lights are
OR gated, i.e. depending on the prerequisites daytime running lamps or automatic driving lights are switched
on.
For the daytime running lamp conditions, there is no difference between the positions "0" and "AUTO" of
the exterior lamp switch.
Corresponding to the national legislation, the daytime running lamps can be coded in different variants via
Star Diagnosis.
Canada and USA
Table of contents,
function description for
exterior lighting GF82.10-P-0999A

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:04 PMPage 24 © 2006 Mitchell Repair Information Company, LLC.

during the day only the low beam is on
when dark, the side lamps, license plate lamps as well as the switch and controls illumination (circuit
58d) are switched on
With halogen headlights the low beam is operated during the day with a reduced voltage
The lighting switches off automatically if the gearshift lever remains in "P" or "N" position for more than
3 min
Scandinavia
with daytime running lamps the low beam, the side lamps and the license plate lamps are active
the daytime running lamps switch off if the light switch assumes the "side lamps ON" position
Other countries
with daytime running lamps the low beam, the side lamps and the license plate lamps are active
the daytime running lamps are always active
The high beams can only be switched on if the exterior lamp switch:
is at "low beam"
is at "AUTO" and "Darkness" is detected
daytime running lamps for "Other countries" has been coded
CONTENTS - FUNCTION DESCRIPTION OF EXTERIOR LIGHTING, LOCATION/ PURPOSE/DESIGN/FUNCTION -
GF82.10-P-9999B
MODELS 129, 140, 202, 208, 210, 163 up to 31.08.01 with CODE (612b) xenon headlamp unit
MODEL 163 as of 01.09.01 with CODE (614) bi-xenon headlamp unit
Automatic driving light
actuation, function GF82.10-P-3003GH
Table of contents,
function description for
exterior lighting GF82.10-P-0999A
Axle sensor for headlamp range
adjustment, location/taskMODELS 129, 140,
202, 208, 210 with
code 612b xenon
headlamp unitGF82.10-P-2100A
Headlamp range adjustment motor,
location/ taskMODELS 129, 140,
202, 208, 210 with
code 612b xenon
headlamp unitGF82.10-P-2101A

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:04 PMPage 25 © 2006 Mitchell Repair Information Company, LLC.

HEADLAMP CLEANING SYSTEM (HCS), LOCATION OF COMPONENTS - GF82.15-P-0002-03GH
Control module for headlamp range
adjustment, location/taskMODELS 129, 140,
202, 208, 210 with
code 612b xenon
headlamp unitGF82.10-P-2102A
Xenon headlamp, position/functionMODELS 129, 140,
202, 208, 210 with
code 612b xenon
headlamp unitGF82.10-P-2001A
Xenon headlamp, position/functionModel 215GF82.10-P-2001B
Xenon headlamp,
position/design/functionMODEL 163 up to
31.08.01GF82.10-P-2007GH
MODEL 163 as of
01.09.01GF82.10-P-
2007GHA
Xenon headlamp control module,
location/taskMODELS 129, 140,
202, 208, 210 with
code 612b xenon
headlamp unitGF82.10-P-2104A
Xenon headlamp ignition module,
location/taskMODELS 129, 140,
202, 208, 210 with
code 612b xenon
headlamp unitGF82.10-P-2105A
Table of contents, function
description for exterior lighting GF82.10-P-0999A

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:04 PMPage 26 © 2006 Mitchell Repair Information Company, LLC.

SURVEY OF SYSTEM COMPONENTS FOR HEADLAMP CLEANING SYSTEM (HCS),
LOCATION/TASK/DESIGN/FUNCTION - GF82.15-P-9998GHZ
MODEL 163 as of 01.9.01 with CODE (600a) headlamp cleaning system
INTERIOR LIGHTING (IL), LOCATION OF COMPONENTS - GF82.20-P-0002-01GH
Location of components
Fig. 15: Identifying Interior Lighting (IL) Components Location
headlamp cleaning
system, taskglass
Function of headlamp
cleaning system
telescopic nozzles GF82.15-P-2100-04GH
Headlamp cleaning system (HCS),
location of components GF82.15-P-0002-
03GH
Telescopic nozzle for headlamp
cleaning system,
location/task/design/function GF82.15-P-2100GH
Table of contents, function description
for headlamp cleaning system (HCS) GF82.15-P-
0998GHZ

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

INTERIOR LIGHTING (IL), FUNCTION - GF82.20-P-0002GH
MODEL 163
The interior lighting can be switched on in two ways: Manually with
the switches for the individual light
automatically by
opening the doors
Switching off the ignition
Locking the vehicle with the central locking feature
Following an accident
CONTENTS - FUNCTION DESCRIPTION OF INTERIOR LIGHTING (IL) - GF82.20-P-0998GH
MODEL 163
Switching on interior
lighting manually GF82.20-P-2009GH
Switching on interior
lighting automatically GF82.20-P-2010GH
Interior lighting, location of
components GF82.20-P-0002-01GH
Function description,
interior lights GF82.20-P-0002GH
Switching interior lights
on/off manually, function GF82.20-P-2009GH
Switching interior lights
on/off automatically,
function GF82.20-P-2010GH
Control of operating period
of interior lights, function GF82.20-P-3001GH
Dimming interior lights,
function GF82.20-P-3002GH
Actuating rear dome lamp,
function GF82.20-P-4005GH
Actuating entrance/exit
lamps, functionas of 12.99GF82.20-P-4004GH
Actuating footwell lamps,
functionas of 12.99GF82.20-P-4008GH
Rotary tumbler GF82.20-P-4105GH

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:04 PMPage 31 © 2006 Mitchell Repair Information Company, LLC.

SWITCHING INTERIOR LIGHTS ON/OFF MANUALLY, FUNCTION - GF82.20-P-2009GH
MODEL 163
The front dome lamp (with shut-off delay and reading lamp) (E15/2) , the right rear dome lamp (E15/9)
and the left rear dome lamp (E15/8) can be switched manually to continuous operation. Each lamp is equipped
with a switch which is actuated by pressing the lamp glass.
The actuated switch interrupts the automatic lamp actuation by the all-activity module (AAM, N10) and
simultaneously switches the lamp connected to c. 30 to ground. Continuous operation can only be terminated by
pressing the switch again. It is not possible to switch off the automatic lamp actuation.
The left front and right front footwell lamps (E17/16 and E17/15) are switched on together with the front
dome lamp (E15/2) The rear interior lamp (E15/3) can also be switched manually to continuous operation.
Automatic lamp actuation is actuated directly when the tailgate is opened and not by the all-activity module. It
is not possible to switch off automatic lamp actuation manually.
Fig. 16: Identifying Front Dome Lamp (With Shut
-Off Delay And Reading Lamp)
microswitches,
location/purpose/
design/function

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:04 PMPage 32 © 2006 Mitchell Repair Information Company, LLC.