2006 MERCEDES-BENZ ML350 Malfunction display

410 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
?
(USA only)
±
(Canada only)
Visit workshop
There may be a malfunction in
the:

Fuel injection system


Ignition system


Exhaust system


Fuel system

Have the measuring system checked by
an authorized Mercedes-Benz Light Truck
Center.
B
Coolant
Check level
The coolant level is too low.

Add coolant (
page 332).

If you have to add coolant frequently,
have the cooling system checked by an
authorized Mercedes-Benz Light Truck
Center.
Warning!
G
Do not spill antifreeze on hot engine parts.
Antifreeze contains ethylene glycol which
may burn if it comes into contact with hot
engine parts. You can be seriously burned.
!Do not ignore the low engine coolant
level warning. Extended driving with
the message and symbol displayed
may cause serious engine damage not
covered by the Mercedes-Benz Limited
Warranty.
Do not drive without sufficient amount
of coolant in the cooling system. The
engine will overheat causing major en-
gine damage.

412 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
Ï
Coolant
Stop, engine off
The poly-V-belt could be broken.

Stop the vehicle and immediately turn off
the engine.

Check the poly-V-belt.
If it is broken:

Do not continue to drive. Otherwise the
engine will overheat due to an inoperative
water pump which may result in damage
to the engine. Notify an authorized
Mercedes-Benz Light Truck Center.
If it is intact:

Do not continue to drive the vehicle with
this message displayed. Doing so could
result in serious engine damage that is
not covered by the Mercedes-Benz Limit-
ed Warranty.

Drive immediately to the nearest autho-
rized Mercedes-Benz Light Truck Center.
Coolant
Visit workshop
The cooling fan for the coolant is
malfunctioning.

Observe the coolant temperature gauge
in the instrument cluster.

Have the fan replaced as soon as possi-
ble.

413 Practical hints
What to do if …
Display symbol
Display messages
Possible cause
Possible solution
G
Display malfunction
Visit workshop
The instrument cluster display is
malfunctioning.

Continue driving with added caution.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
The displays for several systems
have malfunctioned. Some sys-
tems themselves may also have
malfunctioned.

Have the electronic systems checked by
an authorized Mercedes-Benz Light Truck
Center.
±
Display malfunction
Visit workshop
Certain electronic systems are
unable to relay information to
the control system. The follow-
ing systems may have failed:

Coolant temperature display


Tachometer


Cruise control display

Have the electronic systems checked by
an authorized Mercedes-Benz Light Truck
Center.
J

Doors open
Door open
You are attempting to drive with
one or more doors open.

Close the doors.

415 Practical hints
What to do if …
When the
Add 1 qt. engine oil when
next refueling
(Canada:
1 liter
) mes-
sage appears while the engine is running
and at operating temperature, the engine
oil level has dropped to approximately the
minimum level.
When this occurs, the warning will first
come on intermittently and then stay on if
the oil level drops further.Visually check for oil leaks. If no obvious oil
leaks are noted, drive to the nearest
service station where the engine oil should
be topped to the required level with an ap-
proved oil specified in the Factory
Approved Service Products pamphlet.
Display symbol
Display messages
Possible cause
Possible solution
N
Engine oil level
Visit workshop
The engine oil has dropped to a
critical level.

Check the engine oil level (
page 328)
(ML 500 only), or (
page 330) (ML 350
only) and add oil as required
(
page 331).

If you must add engine oil frequently, have
the engine checked for possible leaks.
Oil sensor malfunction
Visit workshop
The measuring system is mal-
functioning.

Have the measuring system checked by
an authorized Mercedes-Benz Light Truck
Center.
!The engine oil level warnings should
not be ignored. Extended driving with
the symbol displayed could result in
serious engine damage that is not
covered by the Mercedes-Benz Limited
Warranty.

418 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
.
3rd brake lamp
The high mounted brake lamp is
malfunctioning. This message
will only appear if all light emit-
ting diodes have stopped work-
ing.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Brake lamp, left
Substitute bulb on
The left brake lamp is malfunc-
tioning. A substitute bulb is be-
ing used.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Brake lamp, right
Substitute bulb on
The right brake lamp is malfunc-
tioning. A substitute bulb is be-
ing used.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Display malfunction
Visit workshop
The display for the lamps or the
system is malfunctioning.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Front foglamp,
left
The left front fog lamp is mal-
functioning.

Replace the bulb as soon as possible.
Front foglamp,
right
The right front fog lamp is mal-
functioning.

Replace the bulb as soon as possible.
Rear foglamp,
left
The left rear fog lamp is malfunc-
tioning.

Replace the bulb as soon as possible.
Rear foglamp,
right
The right rear fog lamp is mal-
functioning.

Replace the bulb as soon as possible.

419 Practical hints
What to do if …
Display symbol
Display messages
Possible cause
Possible solution
.
Active headlamp
currently unavailable
The active Bi-Xenon* headlamps
system is malfunctioning.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Active headlamps
Substitute bulb on
The active Bi-Xenon* headlamps
system is malfunctioning. An-
other light is being used.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Active headlamps
inoperative
The active Bi-Xenon* headlamps
system is malfunctioning.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Active headlamp
s
Display malfunction
The active Bi-Xenon* headlamp
system is malfunctioning.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
High beam,
left
The left high beam lamp is mal-
functioning.

Replace the bulb as soon as possible.
High beam,
right
The right high beam lamp is mal-
functioning.

Replace the bulb as soon as possible.
License plate lamp,
left
The left license plate lamp is
malfunctioning.

Replace the bulb as soon as possible.
License plate lamp,
right
The right license plate lamp is
malfunctioning.

Replace the bulb as soon as possible.

420 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
.
Light sensor
Drive to workshop
The lamp sensor is malfunction-
ing. The headlamps switch on
automatically.

In the control system, set lamp operation
to manual mode.

Switch on headlamps using the exterior
lamp switch.
Low beam,
left
The left low beam lamp is mal-
functioning.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Low beam,
right
The right low beam lamp is mal-
functioning.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Marker lamp
,
front left
The front left side marker lamp is
malfunctioning.

Replace the bulb as soon as possible.
Marker lamp
,
front right
The front right side marker lamp
is malfunctioning.

Replace the bulb as soon as possible.
Parking lamp, front left
Substitute bulb on
The left parking lamps are mal-
functioning. A substitute bulb is
being used.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Parking lamp, front right

Substitute bulb on
The right parking lamps are mal-
functioning. A substitute bulb is
being used.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.

421 Practical hints
What to do if …
Display symbol
Display messages
Possible cause
Possible solution
.
Reverse lamp,
left
The left reverse light is malfunc-
tioning.

Replace the bulb as soon as possible.
Reverse lamp,
right
The right reverse light is mal-
functioning.

Replace the bulb as soon as possible.
Switch off lights
Lamps have been turned on al-
though the SmartKey in the
starter switch is in position0.

Switch off the headlights.
Tail lamp, left
Substitute bulb on
The left tail lamp is malfunction-
ing. A substitute bulb is being
used.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Tail lamp, right
Substitute bulb on
The right tail lamp is malfunc-
tioning. A substitute bulb is be-
ing used.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.