1997 MERCEDES-BENZ ML430 ignition

XENON HEADLAMPS, FUNCTION - GF82.10-P-2007-01GH
Function
The combustion chamber of the xenon lamp is filled with xenon and a mixture of metal halide salts. This
mixture is ignited by high voltage. The color of the light has a characteristic similar to daylight.
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.
As a result of a high voltage surge (approx. 20 kV) of the ignition device, an arc forms between the electrodes,
and the xenon lamp is ignited.
When an arc of sufficient stability is detected, the control electronics of the xenon lamp control module (E1n1,
E2n1) switches over to power-limiting mode. The electric power is regulated to 35 W. A voltage converter
generates the voltage of approx. 85 V (~) necessary for the reliable function of the xenon lamp. For technical
reasons the xenon lamp has a timed startup characteristic. After switching on, 50 % of the luminosity is reached
within 1 to 2 seconds and full luminosity is reached after approx. 30 seconds.
Model 163, up to
31.08.01GF82.10-P-0001GH
Model 163 as of
1.09.01GF82.10-P-
0001GHA
Xenon headlamps, functionModel 163, up to
31.08.01GF82.10-P-2007-
01GH
Model 163 as of
1.09.01GF82.10-P-2007-
01GHA
Automatic driving light actuation,
functionModel 163 as of
01.09.01GF82.10-P-3003GH
Daytime running light control, functionModel 163 as of
01.09.01GF82.10-P-3005GH
Locator lighting, functionModel 163 as of
01.09.01GF80.20-P-2008GH
Headlamp cut-in, functionModel 163 as of
01.09.01GF80.20-P-2003GH
Daytime running lights, functionModel 202 with
Code 236a special
lamp circuit for
daytime running
lampsGF82.10-P-2002A
Contents - Function description of
exterior lighting,
location/task/design/functionModels 129, 140,
163, 202, 208, 210
with code 612b
xenon headlamp unitGF82.10-P-9999B

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:04 PMPage 20 © 2006 Mitchell Repair Information Company, LLC.

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.

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.

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.

Fig. 17: Identifying Left Rear Dome Lamp And Right Rear Dome Lamp
SWITCHING INTERIOR LIGHTS ON/OFF AUTOMATICALLY, FUNCTION - GF82.20-P-2010GH
MODEL 163
Automatic actuation of interior lights is triggered by
opening a door,
unlocking vehicle with transmitter key,
switching off ignition within 30 seconds of switching off exterior lighting (terminal 58k)
or
after crash recognition.
When opening a door, the respective rotary tumbler microswitch (S87/2, S87/3, S87/6 or S87/7) is actuated
and a signal for automatic light actuation is sent to All-Activity-Module (AAM, N10)
With crash recognition by ETR control module with airbag (ETR/ AB, N2/2) up to 11.99 or by restraint
systems control module (N2/7) as of 12/99, signal for automatic light actuation is sent to All-Activity-Module
via a separate cable.
All-Activity-Module actuates correspondin
g interior lights dimmed and switches them off again, after expiry of
Actuating rear dome
lamp GF82.20-P-4005GH
All-activity module
(AAM) GF54.21-P-4100GH

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:04 PMPage 33 © 2006 Mitchell Repair Information Company, LLC.

switched-on time.

Lights switched on manually cannot be switched off by All-Activity-Module.
Rear interior lamp (E15/3) is actuated directly by opening of rear door and not via All-Activity-Module.
Front and rear entrance and exit lamps (E17/3, E17/4, E17/5 and E17/6) introduced as of 12/99 are
actuated via the Extended-Activity-Module (EAM) when corresponding door is opened.
Following table shows which lights are switched on automatically, according to triggering.
Event
Dome
lamp with
delay and
reading
lamp, frontFootwell
lamp, front
left or ri
ght
(as of
12.99)
Entrance/exit
lamp, front left or
right door (as of
12.99)
Dome
lamp,
front leftDome
lamp, rear
right
Entrance/exit
lamp, rear left or
right door (as of
12.99)
Driver door or
front passenger
door openedXXX
Rear left door
or rear right
door opened XXX
Central
locking
unlockedXX XX
Ignition "Off"XX XX
Crash
recognitionXX XX
Control of interior lighting switch-on time,
function GF82.20-P-
3001GH
Dimming interior lighting, function GF82.20-P-
3002GH
Control of rear dome lamp, function GF82.20-P-
4005GH
Rotary tumbler microswitch, location/purpose/
design/function GF82.20-P-
4105GH
Locking with transmitter key, functionUp to 11/99GF80.20-P-
3005GH
Arrangement/purpose/design/function of All-
Activity-Module (AAM)Up to 11/99GF54.21-P-
4100GH
Arrangement/purpose of Extended-Activity-
Module GF54.21-P-
4106GH
Supplemental restraint system (SRS), functionUp to 11/99GF91.60-P-

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:04 PMPage 34 © 2006 Mitchell Repair Information Company, LLC.

CONTROL OF OPERATING PERIOD OF INTERIOR LIGHTS, FUNCTION - GF82.20-P-3001GH
MODEL 163
The switch-on time for the interior lights is controlled by the all-activity module (AAM) (N10) . All lights are
faded off.
When the doors are open the corresponding lamps are switched off after 30 min.
After closing the last front door or last rear door the corresponding lights are switched off after 10 s.
After recognition of a crash the interior lights are switched back off after 30 min.
When the ignition is switched on all of the lights are switched off immediately.

Lights switched on manually are not switched off by the AAM
SWITCHING OFF INTERIOR LIGHTS WITH FADE-OFF FEATURE, FUNCTION - GF82.20-P-3002GH
MODEL 163
The interior lights are faded on and off by the all-activity module (AAM) (N10) . For this purpose the lamps
are actuated by the AAM with a square wave voltage. The frequency of the square wave voltage is 122 Hz and
remains constant. Only the on/off ratio of the square wave voltage is changed during fade on from 0 to 100 %
within 2.5 s. When fading off the on/off ratio is reduced from 100 % to 0 % within 2.5 s.
ACTUATING ENTRANCE/EXIT LAMPS, FUNCTION - GF82.20-P-4004GH
0002GH
As of 12/99GF91.60-P-
0002GI
Switching off interior
lights with face-off
feature GF82.20-P-3002GH
Switching interior lights
on/off manually, function GF82.20-P-2009GH
Switching interior lights
on/off automatically,
function GF82.20-P-2010GH
All-activity module
(AAM) GF54.21-P-4100GH
All-activity module
(AAM) GF54.21-P-4100GH

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:04 PMPage 35 © 2006 Mitchell Repair Information Company, LLC.

system . Data from the light sensors is also sent to the All Activity Module (AAM, N10) via the engine
compartment CAN.
Power supply
Power is supplied to the rain sensor (B38) via KI. 15 so that these functions are available only when the ignition
is on.
RAIN SENSOR - LOCATION/TASK/DESIGN/FUNCTION - GF82.30-P-4103GH
MODEL 163 with code 345a Rain sensor
Fig. 27: Identifying Rain Sensor Location

Rain Sensor - LocationThe rain sensor (B38) is
adhered to the inside
surface of the windshield.
Rain Sensor - TaskThe rain sensor (B38)
assesses the rain
intensity on the
windshield and
automatically adjusts the
intermittent wiper speed.
In addition, light sensors
gauge ambient light

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:05 PMPage 49 © 2006 Mitchell Repair Information Company, LLC.