tailgate MERCEDES-BENZ ML320 1997 Complete Repair Manual

94 Controls in detailLocking and unlockingLocking and unlocking from the inside
You can lock or unlock the doors and the
tailgate from inside using the central lock-
ing switch. This can be useful, for example,
if you want to lock the vehicle before start-
ing to drive.Locking

Press upper part1 of central locking
button (
page 93).
If all the doors are closed, the vehicle
locks.
Unlocking

Press lower part2 of central locking
button (
page 93).
The vehicle unlocks.
Warning!
G
When leaving the vehicle, always remove the
key from the steering lock and lock the vehi-
cle. Do not leave children unattended in the
vehicle, or with access to an unlocked vehi-
cle. Unsupervised use of vehicle equipment
may cause an accident and / or serious per-
sonal injury.
iYou can open a locked door from the
inside. Open door only when conditions
are safe to do so.
If the vehicle was previously centrally
locked using the remote control, it will
not unlock using the central locking
switch.

263 Practical hints
Unlocking / locking in an emergency

Pull off battery cover2 in direction of
arrow.

Remove the batteries.

Using a lint-free cloth, insert new bat-
teries under the contact spring with the
plus (+) side facing up.

Press battery cover2 onto housing
until locked in place.

Push each button to assure proper op-
eration of the remote control.
If remote control does not function cor-
rectly after replacing the batteries, the
system may have to be resynchronized.Synchronizing remote control

Turn key in steering lock to position2
(page 33), then to position0 and re-
move.

Within ten seconds, push and hold
button‹ while pushing
buttonΠfive times.

Release the button, and press‹,
Œ orŠ once.
The remote control is resynchronized.

Recheck all of the remote control func-
tions.
Fuel filler flap
1Cover
2Lock rod
Open the tailgate.

Open cover1 in cargo area behind
the left trim panel.

Turn lock rod2 clockwise (arrow) to
the end stop.
The fuel filler flap can now be opened.
iI f i t i s n o t p o s s i b l e t o r e s y n c h r o n i z e t h e
remote control, have the system
checked at your authorized
Mercedes-Benz Light Truck Center.

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
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MODEL 163 as of 1.12.99
The entrance and exit lamps in the front and rear doors (E17/3, E17/4, E17/5 and E17/6) are actuated by
the extended activity module (EAM) when the corresponding door is opened and when the dome lamp is
switched on.
The switch-on time for the entrance/exit lamps corresponds to that of the interior lighting.
Fig. 18: Identifying Actuating Entrance/Exit Lamps

ACTUATING REAR DOME LAMP, FUNCTION - GF82.20-P-4005GH
MODEL 163
A slide switch with three positions is integrated into the rear dome lamp (E15/3) . The lamp is connected to
circuit 30. Three modes can be selected with the slide switch:
"Automatic" (1). The second lamp terminal is connected to the rotary tumbler/tailgate microscwitch
(S88/1) which completes the circuit to circuit 31 when the tailgate is opened.
Continuous "on" (2). The second terminal in the lamp is connected to circuit 31.
Continuous "off" (3).
Switching interior lighting
on/off manually, function GF82.20-P-2009GH
Switching interior lighting
on/off automatically,
function GF82.20-P-2010GH
Extended activity module,
location/purpose GF54.21-P-4106GH

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:04 PMPage 36 © 2006 Mitchell Repair Information Company, LLC.

REAR INTERMITTENT WIPE - FUNCTION - GF82.30-P-3001GH
MODEL 163 Applicable to 31.8.00
The rear intermittent wipe function is activated by placing the rear wiper/washer switch (S78) in the up
position. With the switch in this position, the All Activity Module (AAM) (N10) activates the tailgate wiper
motor (M6/4) every five seconds.
A relay circuit in the wiper motor stops the wiper arm in the park position.
REAR INTERMITTENT WIPE - FUNCTION - GF82.30-P-3001GK
MODEL 163 Applicable as of 1.9.00
The rear intermittent wipe function is linked, among other things, to the operation of the windshield wiper
system. It will therefore be described in relation to the position of the combination switch (S4):
Combination switch (S4) position: OFF
The rear wiper is powered from KI. 15R: ON by operating the rear wiper/washer switch (S78) . Switching
on the wiper illuminates the LED on the rear wiper/washer switch (S78) and immediately causes the wiper arm
to perform one complete sweep before switching to intermittent wiping.
When the vehicle is traveling at speeds of
less than 100 km/h the wipe interval is 10 seconds
of 100 km/h or more the wipe interval is 5 seconds .
The wiper is turned off by reactivating the wiper/washer switch.
Combination switch (S4) position: Wiper speed 1 or 2
The rear wiper is activated from KI. 15R: ON using the rear wiper/washer switch (S78) .
Switching on the wiper illuminates the LED on the rear wiper/ washer switch (S78) and immediately
causes the wiper arm to perform one complete sweep before switching to intermittent wiping. The wipe
interval is 5 seconds .
Survey on wiper system
components (WS), location/
purpose/design/function GF82.30-P-9998GH
Rear wiper/washer switch GF82.30-P-4105GH
All Activity ModuleTo 30.11.99GF54.21-P-4100GH
As of 1.12.99GF54.21-P-4100GK
Tailgate wiper motor GF82.30-P-4105GH

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
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The actual frequency is also a factor of the vehicle's speed of travel (see chart below).
The wiper is turned off by reactivating the wiper/washer switch.
The start of each wipe cycle is synchronized with the front wiper system.
Networking
Rain sensor (B38) and reverse signals are fed to the All Activity Module (AAM) (N10) via the engine
compartment CAN.
The settings of the rear wiper/washer switch (S78) are read directly by the All Activity Module (AAM)
(N10) .
The tailgate wiper motor unit (M6/4) is controlled directly by the All Activity Module (AAM, N10) .
The tailgate wiper motor unit (M6/4) comprises a relay and a cam-operated switch in addition to the
actual motor.
WINDSHIELD INTERMITTENT WIPE, FUNCTION - GF82.30-P-3003GH
MODEL 163
Function sequence
The interval wiping function is switched on to position (i) with the combination switch.
The input (pin A8) of the all-activity module (AAM, N10) is connected to c. 15 R .
The AAM immediately actuates the front wiper motor relay (F1k17) for max. 2 s. In wiper stage 1 power is
supplied to the wiper motor (M6/1) b
y the relay (pin a).
Vehicle speed Under 50
km/hVehicle speed 50 to 100
km/hVehicle speed 100 km/h
and higher
Frequency of Rear wiperOne twelfth of front
wiper frequencyOne tenth of front wiper
frequencyOne sixth of front wiper
frequency
Rear Wiper/Washer Switch -
Location/Task/ Design/Function GF82.30-P-
4105GH
All Activity Module -
Location/Task/Design/ Function GF54.21-P-
4100GK
Tailgate Wiper Motor -
Location/Task/Design/ Function GF82.30-P-
4105GH
Rain Sensor -
Location/Task/Design/FunctionVehicles with code
345a (rain sensor)
onlyGF82.30-P-
4103GH

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:04 PMPage 44 © 2006 Mitchell Repair Information Company, LLC.

REAR WIPER/WASHER SWITCH - FUNCTION - GF82.30-P-4105-01GH
The rear intermittent wipe function is started by placing the rear wiper/washer switch (S78) in the up position.
The switching contact connects the input (c) to the All Activity Module (AAM, N10) to terminal 15 (a).
The rear wash function is started by placing the switch in the down position. Power is fed to the tailgate
washer pump (M5/3) (b) from terminal 15 via the second switch contact and the AAM input (c) is
simultaneously connected to terminal 15 via the resistor (R).
As of 1.9.2000:
When the rear intermittent wipe function is activated manuallythe LED built into the rear wiper/ washer switch
(S78) will illuminate. LED illumination is controlled by the All Activity Module (AAM, N10) .
Fig. 29: Identifying Rear Wiper/Washer Switch Function

REAR WIPER/WASHER SWITCH - LOCATION/TASK/DESIGN/FUNCTION - GF82.30-P-4105GH
MODEL 163
Wiper motor, location GF82.30-P-0005-01GH
Wiper motor, purposeWiper motor drive for
windshield.
Wiper motor, design GF82.30-P-4104-02GH
Wiper motor, function GF82.30-P-4104-01GH
Location GF82.30-P-0004-01GH
TaskTo control the rear
intermittent wipe and rear
wash functions
Starting 1.9.2000 this
switch will also include
an ON/OFF indicator
LED for the rear wiper.
DesignThe rear wiper switch
consists of a push-button

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
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REAR WASH - FUNCTION - GF82.35-P-3001GH
MODEL 163
The rear wash function is activated by placing the rear wiper/ washer switch (S78) in the down position. The
switch contact connects the tailgate washer pump (M5/3) to terminal 15. The All Activity Module (AAM)
(N10) detects the activation of the switch via the second switch contact and actuates the tailgate washer motor
(M6/4) and the tailgate washer fluid pump (M5/3) for as long as the switch is on.
The activation time for the tailgate washer fluid pump (M5/3)is limited to 15 sec. To reactivate the pump, the
button must be pressed again.
To wipe window dry, the tailgate wiper motor (M6/4) remains activated for five seconds after the switch is
released.

As described for the rear wiper function, a relay circuit in the wiper motor stops the wiper in the park position .
WINDSHIELD WASH - FUNCTION - GF82.35-P-3002GH
MODEL 163
The windshield wash function is activated by pulling the combination switch, washer switch (S4s4) towards
the steering column. The switch contact connects the washer pump (M5/1) to terminal 15R. The All Activity
Module (AAM) (N10) detects switch activation via an input that measures power supply to the washer pump
(M5/1).
If the combination switch (S4) is in the Wiper Off or Intermittent position, the AAM activates the wiper
motor (M6/1) via rela
y F1k17 . To wipe windshield dry, the motor continues to operate after the switch has
Rear window washer
pump, location /
purpose / design /
function GF82.35-P-4103GH
Table of contents,
function description,
wiper system (WS) GF82.30-P-0998GH
Rear Wipe GF82.30-P-3004GH
Rear Wiper/Washer
Switch GF82.30-P-4105GH
Tailgate Wiper Motor GF82.30-P-4106GH
Tailgate Washer Pump GF82.35-P-4103GH
All Activity ModuleTo 30.11.99GF54.21-P-4100GH
As of 1.12.99GF54.21-P-4100GK

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:05 PMPage 54 © 2006 Mitchell Repair Information Company, LLC.

Fig. 69: Identifying Rear Window Antennas Location
FM/AM ANTENNA AMPLIFIER, LOCATION - GF82.62-P-4101-01GH
Model 163
Location:
the FM/AM amplifier (A2/18) is located in the tailgate.
Rear window antennas,
locationThe antennas are located
in the rear window
Rear window antennas,
purposeReception of the
following radio signals:
AM, FM (WB only
)

Rear window antennas,
design GF82.62-P-3106-03GH
Rear window antennas,
function GF82.62-P-3106-04GH

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:06 PMPage 117 © 2006 Mitchell Repair Information Company, LLC.

INTERIOR LIGHTS TEST OF ELECTRICAL SYSTEM - AD82.20-P-6000GH
MODEL 163
WIPER SYSTEM DIAGNOSIS CONTENTS - AD82.30-P-1002GHZ
MODEL 163
Connection and use of
test equipment AD00.00-P-1000AZ
Interior lighting
diagnosis, previous
knowledge AD82.20-P-2000GH
IAAM voltage supply in
order AD54.21-P-6000GH
IIBattery voltage 11-14 V
IIIFuses in order
Lighting equipment in
order
Testing
1Front dome lamp, testing
electrical system of
interior lighting AD82.20-P-6000-01GH
2Rear lamps, testing
electrical system of
interior lighting AD82.20-P-6000-02GH
3Rear dome lamp, testing
electrical system of
interior lighting AD82.20-P-6000-03GH
4Front doors rotary
tumbler microswitch AD80.20-P-6001-39GH
5Rear doors rotary tumbler
microswitch AD80.20-P-6001-40GH
6Tailgate rotary tumbler
microswitch AD80.20-P-6001-44GH
A2.2 [] 11aWiper system diagnosis,
previous knowledge AD82.30-P-2002GH
A2.2 [] 12aWiper system diagnosis,
function check AD82.30-P-3002GH
A2.2 [] 14aWiper system diagnosis,
troubleshooting AD82.30-P-5002GH
A2.2 [] 21aWiper system, testing
electrical system AD82.30-P-6002GH

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