MERCEDES-BENZ ML320 2003 W163 Owner's Manual

221 Operation
Vehicle care
Light alloy wheels
Mercedes-Benz approved Wheel Care
should be used for regular cleaning of the
light alloy wheels.
If possible, clean wheels once a week with
Mercedes-Benz approved Wheel Care, us-
ing a soft bristle brush and a strong spray
of water.
Follow instructions on container.
Instrument cluster
Use a gentle dishwashing detergent or
mild detergent for delicate fabrics as a
washing solution. Wipe with a cloth moist-
ened in lukewarm solution. Do not use
scouring agents.Steering wheel and gear selector lever
Wipe with a damp cloth and dry thoroughly
or clean with Mercedes-Benz approved
Leather Care.
Cup holder
Use a gentle dishwashing detergent or
mild detergent for delicate fabrics as a
washing solution. Wipe with a cloth moist-
ened in lukewarm solution. Do not use
scouring agents.Hard plastic trim items
Pour Mercedes-Benz approved Interior
Care onto soft lint-free cloth and apply
with light pressure.
Headliner
Clean with soft bristle brush, or use a
dry-shampoo cleaner in case of excessive
dirt.
Seat belts
The webbing must not be treated with
chemical cleaning agents. Use only clear,
lukewarm water and soap. Do not dry the
webbing at temperatures above 176°F
(80°C) or in direct sunlight.
iUse only acid-free cleaning materials.
The acid could lead to corrosion.
Warning!
G
Do not bleach or dye seat belts as this may
severely weaken them. In a crash they may
not be able to provide adequate protection.

222 OperationVehicle careUpholstery
Using aftermarket seat covers or wearing
clothing that have the tendency to give off
coloring (e.g. when wet etc.) may cause
the upholstery to become permanently dis-
colored. By lining the seats with a proper
intermediate cover, contact-discoloration
will be prevented.
Leather upholstery
Wipe leather upholstery with a damp cloth
and dry thoroughly or clean with
Mercedes-Benz approved Leather Care.
Exercise particular care when cleaning per-
forated leather as its underside should not
become wet.MB Tex upholstery
Pour Mercedes-Benz approved Interior
Care onto soft lint-free cloth and apply
with light pressure.
Plastic and rubber parts
Do not use oil or wax on these parts.

223 Practical hints
What to do if …
Where will I find ...?
Unlocking/locking in an emergency
Opening/closing in an emergency
Replacing bulbs
Replacing wiper blades
Flat tire
Battery
Jump starting
Towing the vehicle
Fuses

224 Practical hintsWhat to do if …
What to do if …Lamps in instrument clusterGeneral information:
If a bulb in the instrument cluster fails to
light up during the bulb self-check when turning the key in steering lock to
position2, have it checked and replaced if
necessary.Problem
Possible cause
Suggested solution
v
The yellow 4-ETS/ESP warning
lamp lights up while driving.
The ESP is deactivated. Risk of accident!
Adapt your speed and driving to the prevail-
ing road conditions.

Turn the ESP back on (
page 77).
If the ESP cannot be turned back on, have
the system checked at an authorized
Mercedes-Benz Center as soon as possi-
ble.
v
The yellow 4-ETS/ESP warning
lamp flashes while driving.
The ESP or 4-ETS has come into operation
because of detected traction loss in at least
one tire.

During take-off apply as little throttle
as possible.

While driving ease up on the accelera-
tor.

Adapt your speed and driving to the
prevailing road and weather condi-
tions.

Do not deactivate the ESP (excep-
tions: (
page 76).
Failure to follow these instructions in-
creases the risk of accidents.

225 Practical hints
What to do if …
Problem
Possible cause
Suggested solution
-
The yellow ABS malfunction indi-
cator lamp comes on while driv-
ing.
ABS has detected a malfunction and has
switched off. The BAS, ESP, 4-ETS and EBP
are also switched off.
The brake system is still functioning normally
but without ABS available.

Continue driving with added caution.
Wheels will lock during hard braking
reducing steering capability.

Have the system checked at an autho-
rized Mercedes-Benz Light Truck Cen-
ter as soon as possible.
Failure to follow these instructions in-
creases the risk of an accident.
The charging voltage has fallen below
10 volts. The ABS has switched off.
When the voltage is above this value
again, the ABS is operational again.
If necessary, have the generator and
the battery checked.
¿
The yellow malfunction indicator
lamp comes on while driving.
The ESP is no longer synchronized following
a voltage supply interuption (e.g. battery dis-
connected or discharged).
Synchronize the ESP:
Turn the steering wheel from stop lim-
it to stop limit.
The indicator lamp goes out.
The charging voltage has fallen below
10 volts. The BAS and ESP have switched off.
When the voltage is above this value
again, the BAS and ESP are operational
again.
If necessary, have the generator and
the battery checked.

226 Practical hintsWhat to do if …¿
The yellow malfunction indicator
lamp comes on while driving.
The BAS or ESP is malfunctioning.
It is possible that the engine output will be re-
duced.

Have the BAS/ESP checked at an au-
thorized Mercedes-Benz Light Truck
Center as soon as possible.
{
The yellow malfunction indicator
lamp comes on while driving.
4-ETS has switched off to prevent overheat-
ing of the brakes. Also see 4-ETS/ESP warn-
ing lamp (
page 224).
As soon as the brakes have cooled off,
4-ETS switches on again.
The indicator lamp goes out.
4-ETS is malfunctioning and has switched off.

Have the 4-ETS checked at your au-
thorized Mercedes-Benz Light Truck
Center as soon as possible.
ê
The yellow LOW RANGE indicator
lamp blinks after one or more
switching conditions.
The gear selection conditions have not been
adhered to.

Repeat the gear selection process
(page 118).
ê
The yellow LOW RANGE indicator
lamp blinks after switching the
ignition on.
LOW RANGE mode is malfunctioning.
Have the LOW RANGE mode checked at
your authorized Mercedes-Benz Light
Truck Center.
Problem
Possible cause
Suggested solution

227 Practical hints
What to do if …
Problem
Possible cause
Suggested solution
1
The red SRS indicator lamp lights
up while driving.
There is a malfunction in the restraint sys-
tems. The airbags or emergency tensioning
device (ETDs) could deploy unexpectedly or
fail to activate in an accident.

Drive with added caution to the near-
est authorized Mercedes-Benz Light
Truck Center.
Warning!
G
In the event a malfunction of the SRS is indi-
cated as outlined above, the SRS may not be
operational. For your safety, we strongly
recommend that you visit an authorized
Mercedes-Benz Center immediately to have
the system checked, otherwise the SRS may
not be activated when needed in an acci-
dent, which could result in serious or fatal
injury, or it might deploy unexpectedly and
unnecessarily which could result in an acci-
dent and/or injury to you or to others.

228 Practical hintsWhat to do if …Problem
Possible cause
Suggested solution
É
The red brake warning lamp
lights up while driving and you
hear a warning sound.
You are driving with the parking brake set.

Release the parking brake
(page 45).
É
The red brake warning lamp
lights up while driving.
There is insufficient brake fluid in the reser-
voir.

Risk of accident! Carefully stop the
vehicle and notify an authorized
Mercedes-Benz Light Truck Center.
Do not add brake fluid! This will not
solve the problem.
Warning!
G
Driving with the brake warning lamp illumi-
nated can result in an accident. Have your
brake system checked immediately if the
brake warning lamp stays on. Don’t add
brake fluid before checking the brake sys-
tem. Overfilling the brake fluid reservoir can
result in spilling brake fluid on hot engine
parts and the brake fluid catching fire. You
can be seriously burned.
!If you find that the brake fluid in the
brake fluid reservoir has fallen to the
minimum mark or below, have the
brake system checked for brake pad
thickness and leaks.

229 Practical hints
What to do if …
Problem
Possible cause
Suggested solution
É
-
The red brake warning lamp
lights up in addition to the yellow
ABS malfunction lamp and you
hear a warning sound.
There is a malfunction in the Electronic Brake
Proportioning (EBP) system.
The enhanced braking effect is not available.

Have the system checked immediate-
ly at an authorized Mercedes-Benz
Light Truck Center.
Failure to follow these instructions in-
creases the risk of accidents.
:
The yellow warning lamp blinks
after starting the engine or while
driving.
The engine oil level has sunk to the minimum
level. If the engine oil level continues to sink,
the warning lamp will light up.

Add approved oil at the next gas sta-
tion (
page 286).

If oil loss is visible on the engine, have
the malfunction corrected as soon as
possible at a Mercedes-Benz Light
Truck Center.
_
The red indicator lamp does not
go out after starting the engine.
The adjustable telescoping steering column
is not properly locked.

Lock the adjustable steering column
(page 37).
‡
The green front fog lamp indica-
tor lamp lights up when ignition
is turned on.
The front fog lamps are switched on.

Fog lamps (
page 105).

230 Practical hintsWhat to do if …Problem
Possible cause
Suggested solution
/
The yellow coolant warning lamp
lights up when the engine is run-
ning.
The coolant is to hot.
The coolant level is too low.

Stop as soon as possible and allow
the engine and coolant to cool down.

Check the coolant level and add
coolant if necessary (
page 206).
If the warning lamp lights up frequently, there
is a leak in the cooling system.

Have the cooling system checked by
an authorized Mercedes-Benz Light
Truck Center.
The coolant temperature gauge is above
248 °F (120 °C).
The coolant level is too low.

Stop as soon as possible and allow
the engine and coolant to cool down.

Add coolant to prevent engine from
overheating (
page 206).
If the coolant level is correct, the electrical
radiator fan may be broken.

If the coolant temperature is below
the red zone, drive on to the nearest
authorized Mercedes-Benz Light
Truck Center.
Avoid high engine loads (e.g. driving
uphill) and stop-and-go driving.