2003 MERCEDES-BENZ ML320 warning light

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.

233 Practical hints
What to do if …
7
The indicator lamp does not light
up with a BabySmart
TM child
seat properly installed on the
front passenger seat.
The system is malfunctioning.

Make sure that there is nothing be-
tween seat cushion and child seat and
check installation of the child seat
(page 63).

If the light remains out, have the sys-
tem checked as soon as possible by
an authorized Mercedes-Benz Light
Truck Center.
Do not use the BabySmart
TM restraint
to transport children on the front pas-
senger seat until the system has been
repaired.
The yellow fuel tank reserve
warning lamp lights up while
driving.
The fuel level has gone below the reserve
mark.

Refuel at the next gas station
(page 200).
#
The red charge indicator lamp
lights up when the engine is run-
ning.
The battery is no longer charging.
Possible causes:

alternator malfunctioning


broken poly-V-belt

Stop immediately and check the
poly-V-belt.
If it is broken

Do not continue to drive, before the
poly-V-belt is replaced.
Notify an authorized Mercedes-Benz
Light Truck Center.
Problem
Possible cause
Suggested solution

234 Practical hintsWhat to do if …<
The red seat belt warning lamp
blinks for a brief period after
starting the engine.
The warning lamp reminds you to fasten seat
belts.

Fasten your seat belt (
page 60).
W
The yellow low washer system
fluid level lamp lights up after
starting the engine or while driv-
ing.
There is approximately 1.3 US qt. (1.25 l) of
washer fluid remaining in the reservoir.

Add washer fluid (
page 208).
The washer fluid may have frozen

Move the vehicle to a warmer environ-
ment so that the washer fluid will
thaw.

Correct the concentration level after
the washer fluid in the reservoir
thaws.
2
The yellow brake indicator lamp
lights up during braking or after
starting the engine.
The brake pads are worn down.

Have the system checked at an autho-
rized Mercedes-Benz Light Truck
Center.
Problem
Possible cause
Suggested solution
!Brake pad thickness must be visually
checked by a qualified technician at the
intervals specified in the Service book-
let.

239 Practical hints
Where will I find ...?
Spare wheel (space-saver tire)
Use the spare wheel only temporarily,
while observing the following restrictions:

Do not exceed vehicle speed of
50 mph (80 km / h).


Drive to the nearest repair facility to
have the flat tire repaired or replaced
as appropriate.


Do not operate vehicle with more than
one spare wheel mounted.Removing spare wheel (except
ML 55 AMG)
The spare wheel is located behind the rear
bumper.
1Cover

Hold left and right side of cover1 and
pull away from bumper.2Screw
3Spare wheel carrier
4Lever

Turn screw2 counterclockwise using
the wrench (
page 237).
Screw2 remains in spare wheel
carrier3.

Lift spare wheel carrier slightly and
push lever4 to the right using screw-
driver (
page 237).

Swing spare wheel carrier down and
pull it out from under the bumper.
Warning!
G
The dimensions of the spare wheel are dif-
ferent from those of the road wheels. As a
result, the vehicle handling characteristics
change when driving with a mounted spare
wheel.iPlease comply with the instructions for
“Mounting the spare wheel”
(page 255).
Warning!
G
Exercise care when removing or installing
spare wheel to prevent personal injury.

243 Practical hints
Unlocking/locking in an emergency
Locking the vehicle
If you are unable to lock the vehicle with
the remote control, lock it with the me-
chanical key as follows:
Close the passenger doors and the lift-
gate.

Press the upper part of the central
locking button in the cockpit
(page 89).

Check to see whether the locking
knobs on the passenger doors are still
visible. If necessary push them down
manually.

Lock the liftgate if necessary from in-
side (
page 87).

Lock the driver’s door with the me-
chanical key.
Changing batteries
If the batteries in the remote control are
discharged, the vehicle can no longer be
locked or unlocked. It is recommended to
have the batteries replaced at an autho-
rized Mercedes-Benz Light Truck Center.
Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.1Release button
2Battery cover
Replacement batteries: Lithium, type
CR 2025 or equivalent.

Unfold the key by pressing release
button1.
Warning!
G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.
iWhen changing batteries, always re-
place both batteries.
The required replacement batteries are
available at any Mercedes-Benz Light
Truck Center.


248 Practical hintsReplacing bulbsRear 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
10
Side marker lamp
W5W
11
High mounted brake
lamp
1073
(32 cp bulb)
12
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.

249 Practical hints
Replacing bulbs
Replacing bulbs for front lamps
Replacing low beam bulbs
1Low beam halogen or Bi-Xenon* head-
lamp cover with locking tab2Electrical connector
Bi-Xenon* headlampHalogen headlamp

Switch off the lights.

Open the hood (
page 202).

Push down tab at top end of cover1
and remove.

Pull electrical connector2 off.

Unclip the retainer springs and take out
the bulb.

Insert the new bulb so that the base lo-
cates in the recess on the holder.

Clip the retainer springs.

Plug the connector2 onto the bulb.

Align headlamp cover and click into
place.
Warning!
G
Do not remove the cover1 for the Bi-Xenon
headlamp. Because of high voltage in xenon
lamps, it is dangerous to replace the bulb or
repair the lamp and its components. We rec-
o mme n d th at y o u h av e s uc h wo rk don e by a
qualified technician.