2007 MERCEDES-BENZ ML320CDI headlamp

429 Practical hints
What to do if …
On the pages that follow, you will find a
compilation of the most important warning
and malfunction messages that may
appear in the multifunction display.
For your convenience the messages are
divided into two sections:

Text messages (
page 430)


Symbol messages (
page 446)
Warning!
G
No messages will be displayed if either the
instrument cluster or the multifunction
display is inoperative.
As a result, you will not be able to see infor-
mation about your driving conditions, such
as speed or outside temperature, warn-
ing/indicator lamps, malfunction/warning
messages or the failure of any systems.
Driving characteristics may be impaired.
If you must continue to drive, please do so
with added caution. Visit an authorized
Mercedes-Benz Light Truck Center as soon
as possible.
i
Switching on the ignition causes all
instrument cluster lamps (except high beam
headlamp indicator lamp, and turn signal
indicator lamps unless activated) as well as the
multifunction display to come on. Make sure the
lamps and multifunction display are in working
order before starting your journey.

458 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause/consequence
Possible solution
.
3rd brake lamp
The high mounted brake lamp is
malfunctioning. This message
will only appear if a number of
critical LEDs have stopped work-
ing.

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

Contact an authorized Mercedes-Benz
Light Truck Center as soon as possible.
Brake lamp
Left
The left brake lamp is malfunc-
tioning. A substitute bulb is
being used.

Replace the bulb as soon as possible
(page 490).
Brake lamp
Right
The right brake lamp is malfunc-
tioning. A substitute bulb is
being used.

Replace the bulb as soon as possible
(page 490).
Display malfunction
Visit workshop
The display for the lamps or the
system is malfunctioning.

Contact an authorized Mercedes-Benz
Light Truck Center as soon as possible.
Front foglamp
Left
The left front fog lamp is
malfunctioning.

Replace the bulb as soon as possible
(page 488).
Front foglamp
Right
The right front fog lamp is
malfunctioning.

Replace the bulb as soon as possible
(page 488).

459 Practical hints
What to do if …
Display symbol
Display messages
Possible cause/consequence
Possible solution
.
Parking lamp
Front Left
The front left parking lamp is
malfunctioning. A substitute
bulb is being used.

Replace the bulb as soon as possible
(page 487).
Parking lamp
Front Right
The right front parking lamp is
malfunctioning. A substitute
bulb is being used.

Replace the bulb as soon as possible
(page 487).
High beam
Left
The left high beam lamp is
malfunctioning.
Halogen headlamp:
Replace the bulb as soon as possible
(page 486).
Bi-Xenon* headlamp:

Contact an authorized Mercedes-Benz
Light Truck Center as soon as possible.
High beam
Right
The right high beam lamp is
malfunctioning.
Halogen headlamp:
Replace the bulb as soon as possible
(page 486).
Bi-Xenon* headlamp:

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

460 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause/consequence
Possible solution
.
License plate lamp
Left
The left license plate lamp is
malfunctioning.

Replace the bulb as soon as possible
(page 492).
License plate lamp
Right
The right license plate lamp is
malfunctioning.

Replace the bulb as soon as possible
(page 492).
AUTO Light
inoperative
The light sensor is malfunction-
ing. The headlamps do not
switch on automatically.

In the control system, set lamp operation
to manual mode (
page 137).

Switch on headlamps using the exterior
lamp switch.

Contact an authorized Mercedes-Benz
Light Truck Center as soon as possible.
Low beam
Left
The left low beam lamp is
malfunctioning.
Halogen headlamp:
Replace the bulb as soon as possible
(page 485).
Bi-Xenon* headlamp:

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

461 Practical hints
What to do if …
Display symbol
Display messages
Possible cause/consequence
Possible solution
.
Low beam
Right
The right low beam lamp is
malfunctioning.
Halogen headlamp:
Replace the bulb as soon as possible
(page 485).
Bi-Xenon* headlamp:

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

Replace the bulb as soon as possible
(page 488).
Marker lamp
Front Right
The right front side marker lamp
is malfunctioning.

Replace the bulb as soon as possible
(page 488).
Foglamp
Rear Left
The left rear fog lamp is malfunc-
tioning.

Replace the bulb as soon as possible
(page 490).
Reverse lamp
Left
The left backup lamp is
malfunctioning.

Replace the bulb as soon as possible
(page 490).
Reverse lamp
Right
The right backup lamp is
malfunctioning.

Replace the bulb as soon as possible
(page 490).

462 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause/consequence
Possible solution
.
Switch off lights
You have removed the SmartKey
from the starter switch, opened
the driver’s door and left the
headlamps on or removed the
SmartKey with KEYLESS-GO*
from the vehicle and left the
headlamps on.

Switch off the headlamps (
page 66).
Switch off lights
or remove key
You have opened the driver’s
door while the exterior lamp
switch is in positionU and
the SmartKey is still in the start-
er switch.
The parking lamps are still on.

Switch off the headlamps (
page 66).
or

Remove the SmartKey from the starter
switch.
Tail lamp
Left
The left tail lamp is malfunction-
ing. A substitute bulb is being
used.

Replace the bulb as soon as possible
(page 490).
Tail lamp
Right
The right tail lamp is malfunc-
tioning. A substitute bulb is be-
ing used.

Replace the bulb as soon as possible
(page 490).

482 Practical hintsReplacing bulbsBulbs
Safe vehicle operation depends on proper
exterior lighting and signaling. It is there-
fore essential that all bulbs and lamp as-
semblies are in good working order at all
times.
Correct headlamp adjustment is extremely
important. Have headlamps checked and
readjusted at regular intervals and when a
bulb has been replaced. See an authorized
Mercedes-Benz Light Truck Center for
headlamp adjustment.
i
If the headlamps or front fog lamps are
fogged up on the inside as a result of high humid-
ity, driving the vehicle a distance with the lights
on should clear up the fogging.
i
Substitute bulbs will be brought into use
when the following lamps malfunction:


Turn signal lamps


Brake lamps


Parking lamps


Tail lamps
Read and observe the messages in the multi-
function display (
page 458).

483 Practical hints
Replacing bulbs
Front lamps
Rear lamps
Lamp
Type
1
Parking and standing
lamp
W5W
2
Headlamps:
High beam/high beam
flasher
H7 (55 W)
Bi-Xenon headlamps*:
High beam/high beam
flasher spot lamp
H7 (55 W)
3
Headlamps:
Low beam
H7 (55 W)
Bi-Xenon headlamps*:
Low beam
1
1Vehicles with Bi-Xenon* headlamps: Do not re-
place the Bi-Xenon bulbs yourself. Contact an
authorized Mercedes-Benz Light Truck Center.
D2S-35 W
4
Additional turn signal
lamp
LED
5
Side marker lamp
WY 5 W
Lamp
Type
6
Turn signal lamp
3457 AK
S-8
(30/2.2 cp
bulb)
7
Front fog lamp
H11 (55 W)
Corner-illuminating
front fog lamp*
H11 (55 W)
Lamp
Type
8
High mounted brake
lamp
LED
9
Brake lamp
P21W
a
Backup lamp
P21W
b
Turn signal lamp
PY 21 W
c
Side marker lamp
P21/4W
d
Tail, parking, standing
lamp, rear fog lamp
(only driver’s side)
P21/4W
e
License plate lamps
C5W