oil type MERCEDES-BENZ ML320 1997 Complete Repair Manual

88 Flexible service system
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Important!
The FSS indicator is not an engine oil level indicator.
See page 89 for engine oil level indicator.
Notes:
When disconnecting vehicle battery for one or more
days at a time, such days will not be counted. Any such
days not counted by the FSS can be added by your
Mercedes-Benz Light Truck Center.
The interval between services is determined by the type
of driving for which the vehicle is used. For example,
driving at extreme speeds, and cold starts combined
with short distance driving in which the engine does not
reach normal operating temperature, reduce the interval
between services.
Following a completed A or B service the Mercedes-
Benz Light Truck Center sets the counter mileage to
10 000 miles (Canada: 15 000 km) and 365 days.
The counter can also be set by any individual. To do so:
1. Turn the key in steering lock to position 2.
2. Immediately press button (1) twice within one
second.3. The present status for days or distance is displayed.
Within 10 seconds turn key in steering lock to
position 0.
4. Press and hold button (1), while turning key in
steering lock to position 2 again. The present status
for days or distance is displayed once more.
Continue to hold button (1).
After approximately 10 seconds a signal sounds, and
the display shows 10 000 miles (Canada: 15 000 km)
for approximately 10 seconds.
5. Release button (1).
If the FSS counter was inadvertently reset, have it
corrected at a Mercedes-Benz Light Truck Center.
Notes:
The FSS allows for distances between 10 000 miles
(Canada: 15 000 km) and 20 000 miles (Canada:
30 000 km), or from 365 to 730 days between services.
However you choose to set your reference numbers, the
scheduled services as posted in the Service Booklet
must be followed to properly care for your vehicle.

88
Flexible service system
Te ch n ica l
data
Instruments
and controls Operation
Driving Instrument
cluster display Practical hints Car care Index
Important!
The FSS indicator is not an engine oil level indicator.
See page 89 for engine oil level indicator.
Notes:
When disconnecting vehicle battery for one or more
days at a time, such days will not be counted. Any such
days not counted by the FSS can be added by your
Mercedes-Benz Light Truck Center.
The interval between services is determined by the type
of driving for which the vehicle is used. For example,
driving at extreme speeds, and cold starts combined
with short distance driving in which the engine does not
reach normal operating temperature, reduce the interval
between services.
Following a completed A or B service the Mercedes-
Benz Light Truck Center sets the counter mileage to
10 000 miles (Canada: 15 000 km) and 365 days.
The counter can also be set by any individual. To do so: 1. Turn the key in steering lock to position 2.
2. Immediately press button (1) twice within one second. 3. The present status for days or distance is displayed.
Within 10 seconds turn key in steering lock to
position 0.
4. Press and hold button (1), while turning key in steering lock to position 2 again. The present status
for days or distance is displayed once more.
Continue to hold button (1).
After approximately 10 seconds a signal sounds, and
the display shows 10 000 miles (Canada: 15 000 km)
for approximately 10 seconds.
5. Release button (1).
If the FSS counter was inadvertently reset, have it
corrected at a Mercedes-Benz Light Truck Center.
Notes:
The FSS allows for distances between 10 000 miles
(Canada: 15 000 km) and 20 000 miles (Canada:
30 000 km), or from 365 to 730 days between services.
However you choose to set your reference numbers, the
scheduled services as posted in the Service Booklet
must be followed to properly care for your vehicle.

267 Practical hints
Replacing bulbs
Rear lamps Notes on bulb replacement


Use only 12-volt bulbs of the same type
and with the specified watt rating.


Switch lights off before changing a bulb
to prevent short circuits.


Always use a clean lint-free cloth when
handling bulbs.


Your hands should be dry and free of oil
and grease.


If the newly installed bulb does not light
up, visit an authorized Mercedes-Benz
Light Truck Center.


Have the LEDs and bulbs for the follow-
ing lamps replaced by an authorized
Mercedes-Benz Light Truck Center:

Additional turn signals in the exteri-
or rear view mirrors


Bi-Xenon lamps*


Front fog lamps (vehicles with sport
package)*
Lamp
Type
6
Brake lamp
1073
(32 cp bulb)
7
Backup lamp
1073
(32 cp bulb)
8
Turn signal lamp
PY 21 W
9
Tail, parking and
standing lamp
Rear fog lamp, driv-
er’s side
P 21 / 4 W
a
Side marker lamp
W5W
b
High mounted brake
lamp
1073
(32 cp bulb)
c
License plate lamps
C 5 W
Warning!
G
Keep bulbs out of reach of children.
Bulbs and bulb sockets can be very hot. Al-
low the lamp to cool down before changing
a bulb.
Halogen lamps contain pressurized gas. A
bulb can explode if you:

touch or move it when hot


drop the bulb


scratch the bulb
Wear eye and hand protection.
Because of high voltage in xenon lamps, it is
dangerous to replace the bulb or repair the
lamp and its components. We recommend
that you have such work done by a qualified
technician.

Fig. 51: Location/Task/Desi gn/Function Of Oil Pump
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Oil Pump, Location

The oil pump (crescent-type pump) (6) is installed in the torque converter housing behind the torque
converter and is driven by the drive flange of the torque converter. See Fig. 51
.
Oil Pump, Task

To produce the necessary oil pressure for the hydraulic sequences.
Oil Pump, Design

An external gear (6a) which is m ounted eccentrically in the pump housi ng is located on the internal gear
(6b) which is connected to the drive flange (6b). The crescent (6c) drives the external gear (6a).
Oil Pump, Function

When the engine is running oil is delivered through th e suction gallery (6e) along the top and bottom side
of the crescent (6c) to the pr essure chamber (6d) of the housin
g. The meshing of the teeth prevents oil

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMI SSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:26 PMPage 95 © 2006 Mitchell Repair Information Company, LLC.

GF54.30-P-2002A
Display instruments, location / task / function
24.10.96

MODEL
129, 140 as of 1.6.96,

163, 168, 170,

202 as of 1.8.96,

208 up to 31.7.99,

210 as of 1.6.96 up to 30.6.99

Display
Type of data transmission

D
Outside temperature indicator (A1p4)

D
Fuel level gauge (A1p2)

D
Engine oil pressure gauge (A1p3), only

model 129 and model 140

D
Low windshield washer fluid level

indicator lamp (A1e13), model 163 as of

01.09.01

Direct lines

GF54.30-P-3004A

D
Total mileage odometer (A1h4)

D
Electronic speedometer (A1p8)

D
Tachometer (A1p5)

D
Coolant temperature gauge (A1p1)

D
Active service system (ASSYST)

D
Gear indicator (A1p12), only model 168

CAN data lines

GF54.30-P-3005A

D
Electronic clock
Internal

GF54.30-P-3011A

Copyright DaimlerChrysler AG 04.06.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorde
d by Modification services.
Page 1

IGNITION COILS, LOCATION - GF15.10-P-3102-01A
Fig. 5: Identifying Cylinder 1 To 6 Ignition Coil - Location On Engine 112
Spark plugs, locationOne or two spark plugs are
located in the cylinder head
per cylinder.
Spark plugs, taskThe spark plugs ignite the
suctioned and compressed
fuel-air mixture due to arcing
between the electrodes.
Spark plugs, designIn the manufacturer's specific
type symbols, all the spark
plug features are assigned (e.
g. heat rating, shape of
seating, thread, width across
flats, electrode material,
spark position).
Spark plugs, functionThe ignition voltage travels to
the spark plugs from directly
connected ignition coils or
over the ignition lines from
the ignition coils causing
arcing in the air gap between
the center and ground
electrodes.

2001 Mercedes-Benz ML320
1998-2005 ENGINE Electrical System - Engine - 163 Chassis
me
Saturday, October 02, 2010 3:18:54 PMPage 8 © 2006 Mitchell Repair Information Company, LLC.

(The texts in parentheses relate to vehicles without multifunction display.)
Resetting ASSYST after oil change (oil change reset) at instrument cluster:
Move start switch into position "2".
Within the first 4 s after moving start switch into position "2": press reset button for trip counter twice
within one second. The display for the servi ce request is thus activated for 10 s.
Within these 10 s move start switch into position "0". The service request continues to be displayed.
Press reset button for trip counter and hold pressed .
Move start switch into position "2".
Continue to hold reset button for trip counter pressed (about 10 s) until the signal sounds and the new
start distance appears in the display.
BLOCK DIAGRAM OF ACTI VE SERVICE SYSTEM (ASSYST) - GF00.20-P-0003-03A
Fig. 317: Block Diagram Of Acti ve Service System (ASSYST)
ACTIVE SERVICE SYSTEM (ASSYST) DISPLAY FACILITIES - GF00.20-P-0003-04A
The table shows a number of pos sible types of displays of the active se rvice system for different vehicles and
different instru ment clusters.
(The display appears in the language set with the HHT under national code.)

2004 Mercedes-Benz ML350
1998-2005 GENINFO Overall vehicle - 163 Chassis
me
Saturday, October 02, 2010 3:47:47 PMPage 196 © 2006 Mitchell Repair Information Company, LLC.

RISK OF INJURY CAUSED BY PINCHING OR JAMMING WHEN WORKING ON LOADED SPRINGS OR SPRING BODIES
- AS00.00-Z-0001-01A
Use only approved clamping devices; shield off hazard area if necessary. Inspect special tools for damage
and proper operation (visual inspection). Wear protective gloves.
Risk of pinching and jamming body parts when working on pre-loaded components.
When loosening or removing components that are under significant load, there is a risk of serious injury if
non-approved if clamping devices are used.
Safety instructions/precautions
When conducting repair work on springs, spring bodies, spring-type actuators and other components under
tension use approved clamping devices only .
Spring compressor
The spring compressor should never be clamped or released using an impact wrench.
Check clamping devices
The spindle must be undamaged and allow ease of movement.
The clamping plates must not be deformed.
Note arrangement of clamping plates to springs.
If the device is damaged or malfunctioning, it must be returned to the manufacturer.
The coil diameter of the spring should match the groove in the clamping plate.
Wear protective gloves during all operations.
RISK OF INJURY. SKIN OR EYE INJURIES MAY RESULT WHEN HANDLING HOT OR GLOWING OBJECTS. - AS00.00-
Z-0002-01A
Wear protective gloves, protective clothing and (where necessary) safety glasses.
Risk of injury
Unprotected contact with hot or glowing objects may cause severe burns to the skin and eyes.
If glowing objects come into contact with water, hot steam or hot splashing water may result in severe skin and
eye burns.
Severe and possibly permanent injuries may result if hot or glowing objects come into contact with unprotected
skin or eyes.
Fire ma
y result if glowing objects come into contact with flammable materials or substances.

2004 Mercedes-Benz ML350
1998-2005 GENINFO Overall vehicle - 163 Chassis
me
Saturday, October 02, 2010 3:47:47 PMPage 217 © 2006 Mitchell Repair Information Company, LLC.

MODELS 124, 129, 140, 163 up to 30.11.99, 163 as of 1.9.01, 168, 170, 201, 202, 208, 210, 215, 220
EXPLANATION OF SYMBOLS FOR TESTERS AND COMPONENTS - AD00.00-P-2000-01A
0.0 [] 1Key to diagnostics
symbols AD00.00-P-2001A
0.0 [] 2Diagnosis assignmentexcept models 215, 220AD00.00-P-2002A
0.0 [] 3Connect test equipment
diagnosisexcept model 215AD00.00-P-2003A
0.0 [] 4Diagnostic procedureonly for vehicle systems
that can be diagnosed using
STAR DIAGNOSISAD00.00-P-2004A
DescriptionLogoDescriptionLogoDescriptionLogo
ABS Adapter Battery Short-circuit
35-pin socket
box Direct current
generator Short-circuit to
ground
126-pin socket
box Direct current
motor Open-circuit
Function
generator Capacitor Multimeter
alternating
voltage type of
measurement
Hand-Held
Tester Coil Multimeter
resistance type of
measurement
Pulse counter Resistance Function
generator square-
wave signal shape
Lambda control
tester Ground Function
generator
sinusoidal signal
shape
Pressure gauge In order Oscilloscope
Multimeter Fault Adapter cable
with light-
emitting diode
Decade resistor Greater than > Multimeter direct
current type of
measurement
Bridge Less than < Multimeter
alternating
current type of
measurement

2004 Mercedes-Benz ML350
1998-2005 GENINFO Overall vehicle - 163 Chassis
me
Saturday, October 02, 2010 3:47:48 PMPage 238 © 2006 Mitchell Repair Information Company, LLC.

1. Hypoid gear oils
Hypoid gear oils contain a high level of EP/AW additives (Extreme Pressure/Antiwear) and a highly
viscous base oil to prevent seizure when the hypoid gears mesh (mixed and boundary friction conditions)
and to ensure a high degree of protection against wear. The compatibility with radial shaft seals is
regarded as critical with such high concentrations of additives because the P/S additive systems become
thermally unstable at temperatures from 130°C to 140°C and this may lead to sludging of the hypoid oil.
The resultant deposits on the radial shaft seals then generally lead to thermal overload and this in turn
leads to leakage in this component.
The tooth engagement conditions of the hypoid gears result in a high proportion of sliding and a low
hydrodynamic proportion of tooth engagement between the pinion and ring gear. Due to the high
tribological load compared to adhesive wear (seizure) and pitting, the performance of hypoid gear oils
must be particularly high with respect to these types of wear. The formula of the oils is therefore
determined by a high concentration of EP/AW additives and a highly viscous base oil. Alternative oils,
e.g. engine oils, cannot be used for these drive types. Proof of performance that an oil fulfills the
requirements of DaimlerChrysler AG is provided by internal tests. However, the hypoid gear oils must at
least correspond to the US military specification MIL-L-2105 B/C/D and must be classed GL-5 in the
quality grade according to API (American Institute of Petroleum).
1.7 Viscosity requirements
The cold flow behavior is only specified for SAE, ... oils. Here, the limits apply according to SAE J 306
c, according to which the dynamic viscosity may be max. 150,000 mPas at -40°C for oils and at -12°C for
oils. As a result of the tendency to form deposits in the transmission, the polymer content is limited to
max.
1 percent by weight for pour point reducers. Polymers as VI improvers for thickening low-viscosity base
oils are not permitted. The kinematic viscosity at 100°C must be at least 16.5 mm
2 /s.
2. Transmission oils, sheet 235.1
The additive and viscosity properties of the transmission oils are adjusted so that they meet all the
requirements placed on manual transmissions with steel/molybdenum synchronization, spur gear axles,
MB and ZF transfer cases and reversing gears. Among other things, this results in the fact that the oils
ensure a defined friction coefficient of the synchronizer elements, even after a high number of shift
operations, without crunching noises.
With gear drives and roller bearings, the adhesive wear (seizure) and pitting in particular should be
minimized as far as possible.
2.1 Viscosity requirements
The cold flow behavior is only specified for SAE, 80W, ...oils. Here, the limits according to SAE J 306 c
apply, according to which the dynamic viscosity may be max. 150,000 mPas at -40°C for oils, at -26°C
for oils and at -12°C for oils. Due to the formation of deposits in the transmission, the polymer content is
limited to max. 1 percent b
y weight for pour point reducers. Polymers as VI improvers for thickening

2004 Mercedes-Benz ML350
1998-2005 GENINFO Overall vehicle - 163 Chassis
me
Saturday, October 02, 2010 3:47:56 PMPage 501 © 2006 Mitchell Repair Information Company, LLC.