1997 MERCEDES-BENZ ML320 water pump

223 Malfunction and indicator lamps
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index Seat belt warning lamp
With the key in steering lock position 2, the
seat belt warning lamp comes on for a short
time if the driver’s seat belt is not fastened.
After starting the engine, the warning lamp remains
illuminated for a short time to remind the driver and
passengers to fasten seat belts.
Charge indicator lamp
Should the charge indicator lamp fail to
come on prior to starting when the key is in
steering lock position 2 or should it fail to go
out after starting or during operation, this indicates a
malfunction which must be repaired at an authorized
Mercedes-Benz Light Truck Center immediately.If the charge indicator lamp comes on while the engine
is running, this may indicate that the poly-V-belt has
broken. Should this condition occur, the poly-V-belt
must be replaced before continuing to operate the
vehicle. Otherwise, the engine will overheat due to an
inoperative water pump which may result in damage to
the engine.
Do not continue to drive the vehicle with the charge
indicator lamp illuminated. Doing so could result in
serious engine damage that is not covered by the
Mercedes-Benz Limited Warranty.

223
Malfunction and indicator lamps
Te ch n ica l
data
Instruments
and controls Operation Driving
Instrument
cluster display Practical hints Car care Index
Seat belt warning lamp
With the key in steering lock position 2, the
seat belt warning lamp comes on for a short
time if the driver’s seat belt is not fastened.
After starting the engine, the warning lamp remains
illuminated for a short time to remind the driver and
passengers to fasten seat belts.
Charge indicator lamp Should the charge indicator lamp fail to
come on prior to starting when the key is in
steering lock position 2 or should it fail to go
out after starting or during operation, this indicates a
malfunction which must be repaired at an authorized
Mercedes-Benz Light Truck Center immediately. If the charge indicator lamp comes on while the engine
is running, this may indicate that the poly-V-belt has
broken. Should this condition occur, the poly-V-belt
must be replaced before continuing to operate the
vehicle. Otherwise, the engine will overheat due to an
inoperative water pump which may result in damage to
the engine.
Do not continue to drive the vehicle with the charge
indicator lamp illuminated. Doing so could result in
serious engine damage that is not covered by the
Mercedes-Benz Limited Warranty.

215 Operation
At the gas station

Replace the fuel cap by turning it to the
right.
You will hear when the fuel cap is tight-
ened.

Close the fuel filler flap.
Check regularly and before a long trip
Open the hood (
page 217)
1Engine oil level
2Coolant level
For normal replenishing, use water (po-
table water quality). More information
on the coolant level can be found in the
“Operation” section (
page 222).
3Brake fluid
4Windshield washer system and
headlamp cleaning system*
More information on filling the reser-
voir can be found in the “Operation”
section (
page 224).
iUse only premium unleaded gasoline
with a minimum Posted Octane Rating
of 91 (average of 96 RON / 86 MON).
Information on gasoline quality can
normally be found on the fuel pump.
More information on gasoline can be
found in the Factory Approved Service
Products pamphlet.
iLeaving the engine running and the fuel
cap open can cause the yellow fuel
tank reserve warning lamp to flash and
the? lamp to illuminate.
See also “Practical hints” section
(page 248).

AR54.10-P-0005GH
Remove/install battery
23.3.00

MODEL
163.113 /128 /136 /154 /157 /172 /174 /175

P54.10-2066-06

Right-hand drive vehicle shown

1
Ground line

2
Positive wire

3
Seal

4
Shield

5
Alternator line

6
Starter line

7
Brake booster line

8
Overflow hose

9
Control cable

10
Suction fan locking bracket

11
Bolt

12
Clamping wedge

13
Retaining bracket

G1 Battery

M13
Heating water circulation pump


Remove, Install

Danger!

Risk of explosion
from electrolytic gas.
Risk

of poisoning and irritation
if battery acid is

swallowed.
Risk of injury
through burns to

skin and eyes from battery acid or when

handling damaged lead-acid batteries
No fire, sparks, naked flames or smoking.

Wear acid-resistant gloves, clothing and eye

protection. Pour battery electrolyte only into

suitable and appropriately marked containers.

AS54.10-Z-0001-01A

Notes on battery
All models

AH54.10-P-0001-01A

1
Turn ignition key to position "0"

to avoid fault codes.

2
Disconnect ground cable (1) from battery


To prevent unintended contact, insulate

the ground lead cable lug.

AR54.10-P-0003A

3
Remove protective shield at positive pole of

battery and remove all lines attached to

positive cable (2)

4
Disconnect positive cable (2) from the battery

(G1).

5
Remove seal (3) at shield (4)

6.1
Unscrew bolt for securing generator line to

shield

As of VIN A145273, X708319.

7
Slacken retaining clip at side of shield (4),

guide all lines through shield and lay to one

side

8.1
Detach coolant circulation pump (M13) from

shield

As of VIN A145273, X708319.

9
Remove cable strap at lines at side of shield

10
Detach overflow hose (8) and control cable

(9) at shield

11.1
Detach locking bracket of suction fan (10) at

the front from the shield and remove line from

shield

Only if fitted.

12
Unscrew bolt (11) at shield


*BA54.10-P-1002-01A

13
Remove clamping wedge (12) at retaining

bracket

14
Detach retaining bracket (13) by pressing

downwards

15
Detach and remove shield (4)

Rotate the shield forwards and move back

in order to loosen the front retaining lugs.

16
Remove battery (G1).

17.1
Dispose of battery

If battery is defective.

o

Dispose of battery
All models

OS54.10-P-0001-01Z

18
Install in the reverse order

Copyright DaimlerChrysler AG 05.06.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorde
d by Modification services.
Page 1

Function prerequisites:
Circuit 15 ON
Function
The headlamp cleaning system is switched on by pressing the SRA [HCS] switch (S4/1) .
The corresponding input of the Extended Activity Module (EAM) (N10/1) , which receives the input
from the switch, sends the signal to relay 5 (F2k5) .
The relay switches circuit 30 , for a duty cycle of approx. 1 second, through to the HCS pump (M5/2) .
The HCS pump (M5/2) builds up pressure in the washing water line.
The water pressure acts against the return springs of the telescopic nozzles.
The telescopic nozzles extend and spray washing water onto the headlamp glass.
After the duty cycle, the pressure in the washing water line drops again and the telescopic nozzles move
back to their starting position due to spring load.
Pressing the SRA [HCS] switch (S4/1) again during an ongoing headlamp cleaning cycle has no effect.
A further cleaning cycle can only be initiated after the previous cycle has ended.
TABLE OF CONTENTS, FUNCTION DESCRIPTION FOR HEADLAMP CLEANING SYSTEM (HCS) - GF82.15-P-0998GHZ
MODEL 163 as of 01.09.01 with CODE (600a) headlamp cleaning system
FUNCTION OF HEADLAMP CLEANING SYSTEM TELESCOPIC NOZZLES - GF82.15-P-2100-04GH
After the HCS pump (M5/2) has started to operate, pressure builds up in the washing water line for approx. 1
Headlamp cleaning system (HCS),
location of components GF82.15-P-0002-
03GH
Telescopic nozzles for headlamp
cleaning system,
location/task/design/function GF82.15-P-2100GH
Extended Activity Module,
location/task/design GF54.21-P-4107GK
Headlamp cleaning system
(HCS), function GF82.15-P-0002GH
Headlamp cleaning system
(HCS), location of components GF82.15-P-0002-
03GH
Survey of system components
for headlamp cleaning system
(HCS), location/task/design/
function GF82.15-P-9998GHZ

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:04 PMPage 28 © 2006 Mitchell Repair Information Company, LLC.

been released until the AAM detects three operations of the cam-operated switch.
WASHER PUMP, FUNCTION - GF82.35-P-4101-01GH
The motor for the washer pump (M5/1) is switched on and off by the single wipe/wash switch (S4s4) in the
combination switch.
The pump pumps water from the washer water reservoir to the windshield washer.
WINDSHIELD WASHER PUMP, LOCATION/PURPOSE/DESIGN/FUNCTION - GF82.35-P-4101A
MODEL 202 as of 1.6.97, 208, 163, 210.081, 210 (except 210.2 /081) as of 1.3.97
REAR WINDOW WASHER PUMP, LOCATION - GF82.35-P-4103-01GH
Fig. 32: Identifying Washer Pump And Rear Window Washer Pump
Windshield Intermittent
Wipe - Function GF82.30-P-3003GH
Windshield Washer
Pump GF82.35-P-4101A
Wiper Motor GF82.30-P-4104GH
All Activity ModuleTo 30.11.99GF54.21-P-4100GH
As of 1.12.99GF54.21-P-4100GK
LocationModels 202, 208, 210GF82.30-P-0005-01A
Model 163GF82.35-P-4103-01GH
PurposePumping water for
washing windshield
DesignThe windshield washer
pump is driven by a DC
motor
FunctionModels 202, 208, 210GF82.35-P-4101-01A
Model 163GF82.35-P-4101-01GH

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:05 PMPage 55 © 2006 Mitchell Repair Information Company, LLC.

REAR WINDOW WASHER PUMP, FUNCTION - GF82.35-P-4103-02GH
The motor for the rear window washer pump (M5/3) is switched on and off by the rear window
wiper/washer switch (S78) .
The pump pumps water from the washer water reservoir to the rear window washer.
REAR WINDOW WASHER PUMP, LOCATION/PURPOSE/DESIGN/FUNCTION - GF82.35-P-4103GH
MODEL 163
RADIO (RD), LOCATION OF CONTROLS - GF82.60-P-0001-02I
MB Hi-line radio
Fig. 33: Identifying Radio (RD) Controls Location

RADIO (RD), LOCATION OF CONTROLS - GF82.60-P-0001-02J
MB Premium radio
Location GF82.35-P-4103-01GH
PurposePumping water for
washing rear window.
DesignThe washer pump is
driven by a DC motor
Function GF82.35-P-4103-02GH

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:05 PMPage 56 © 2006 Mitchell Repair Information Company, LLC.

GF82.15-P-2100-04GH
Function of headlamp cleaning system

telescopic nozzles

n

After the
HCS pump (M5/2)
has started to operate, pressure builds

up in the washing water line for approx. 1 second. Driven by the

water pressure, the nozzles first move telescopically into the cleaning

position. Then as a result of a further pressure rise, a valve at each

telescopic nozzle opens and an exactly metered quantity of washing

water is sprayed onto the headlamp lenses.
Swirl chambers are provided at the tips of the telescoping sections

and these ensure controlled propagation of the water jet, even when

traveling fast. After the cleaning process, the telescoping sections

are retracted back into the starting position with the aid of return

springs.

Copyright DaimlerChrysler AG 17.05.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorde
d by Modification services.
Page 1