bulb MERCEDES-BENZ R350 2006 W251 Owner's Manual

Contents
Uniform Tire Quality Grading
Standards (U.S. vehicles) ............. 383
Tire ply material ........................... 385
Tire and loading terminology ........ 385
Rotating tires ............................... 388
Winter driving .................................... 390
Winter tires .................................. 390
Block heater (Canada only) .......... 391
Snow chains................................. 391
Maintenance ...................................... 392
Clearing the maintenance service
indicator ....................................... 393
Maintenance service term
exceeded ..................................... 393
Calling up the maintenance
service indicator........................... 393
Resetting the maintenance
service indicator........................... 394
Vehicle care ....................................... 395
Cleaning and care of the vehicle .. 395
Practical hints.................................. 403
What to do if … ................................... 404
Lamps in instrument cluster ......... 404
Lamp in center console................. 414
Vehicle status messages in the
multifunction display..................... 416
Where will I find ...? ............................ 454
First aid kit .................................... 454
Vehicle tool kit .............................. 454
Spare wheel .................................. 457
Unlocking / locking in an emergency .. 459
Unlocking the vehicle.................... 459
Locking the vehicle ....................... 460
Fuel filler flap ................................ 461
Opening / closing in an emergency ..... 462
Power tilt/sliding sunroof* ........... 462
Replacing SmartKey batteries ............ 463
SmartKey ...................................... 463
SmartKey with KEYLESS-GO* ....... 464
Replacing bulbs .................................. 465
Bulbs ............................................. 465
Replacing bulbs for front lamps .... 468
Replacing bulbs for rear lamps ..... 472Replacing wiper blades ...................... 475
Front wiper blades ........................ 475
Rear wiper blade ........................... 476
Flat tire............................................... 478
Preparing the vehicle .................... 478
Mounting the spare wheel ............ 479
Battery ............................................... 487
Disconnecting, removing,
reinstalling and reconnecting
the battery .................................... 489
Charging the battery ..................... 495
Jump starting...................................... 496
Towing the vehicle.............................. 499
Installing towing eye bolts ............ 501
Stranded vehicle ........................... 502
Fuses.................................................. 503
Main fuse box ............................... 504
Fuse box in cargo compartment ... 504
Fuse box in passenger
compartment ................................ 505

344 OperationAt the gas stationCoolant
For normal replenishing, use water (pota-
ble water quality). For more information,
see “Coolant level” (
page 351) and
“Fuels, coolants, lubricants, etc.”
(
page 521).
Brake fluidWindshield / rear window washer
system and headlamp cleaning
system*
For more information on refilling the reser-
voir, see “Windshield / rear window washer
system and headlamp cleaning system*”
(
page 352).
Vehicle lighting
Check function and cleanliness. For infor-
mation on replacing light bulbs, see “Re-
placing bulbs” (
page 465).
For more information, see “Exterior lamp
switch” (
page 147).
Tire inflation pressure
For more information, see “Checking tire
inflation pressure” (
page 365).
!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 immediately. Noti-
fy an authorized Mercedes-Benz Light
Truck Center immediately. Do not add
brake fluid as this will not solve the
problem. For more information, see
“Brake fluid” (
page 523).

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

404 Practical hintsWhat to do if …Lamps in instrument clusterGeneral information:
If any of the following lamps in the instru-
ment cluster fails to come on during thebulb self-check when switching on the
ignition, have the respective bulb checked
and replaced if necessary.Problem
Possible cause/consequence
Suggested solution
-
The yellow ABS indicator lamp
comes on while the engine is
running.
ABS has detected a malfunction and has
switched off. The BAS, ESP
®, and 4-ETS are
also switched off (see messages in multifunc-
tion display).
The brake system is still functioning normally
but without the ABS available.
If the ABS control unit is malfunctioning,
other systems such as the navigation
system* or the automatic transmission may
also be malfunctioning.

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

Read and observe messages in the
multifunction display (
page 416).

Have the system checked at an
authorized Mercedes-Benz Light
Truck Center as soon as possible.
Failure to follow these instructions
increases the risk of an accident.
The charging voltage has fallen below
10 volts. The ABS has switched off.
The battery might not be charged sufficiently.

Switch off electrical consumers that
are currently not needed, e.g. seat
heating*.

If necessary, have the generator
(alternator) and battery checked.
When the voltage is above this value
again, the ABS is operational again.

442 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 all light
emitting diodes have stopped
working.

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
being used.

Replace the bulb as soon as possible.
Brake lamp, right
Substitute bulb on
The right brake lamp is malfunc-
tioning. A substitute bulb is
being used.

Replace the bulb as soon as possible.
Brake lamp
Drive to workshop
Brake lamp illumination is de-
layed or lamp is permanently on.

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
malfunctioning.

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

Replace the bulb as soon as possible.
Rear fog lamp
The rear fog lamp is malfunction-
ing.

Replace the bulb as soon as possible.

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

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

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Active headlamps
inoperative
The active Bi-Xenon* headlamp
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
malfunctioning.
Halogen headlamp:
Replace the bulb as soon as possible.
Bi-Xenon* headlamp:

Visit 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.
Bi-Xenon* headlamp:

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

444 Practical hintsWhat to do if ….
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.
Light sensor
Drive to workshop
The lamp sensor is malfunction-
ing. The headlamps do not
switch on automatically.

In the control system, set lamp operation
to manual mode (
page 148).

Switch on headlamps using the exterior
lamp switch (
page 147).

Visit 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.
Bi-Xenon* headlamp:

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Low beam,
right
The right low beam lamp is
malfunctioning.
Halogen headlamp:
Replace the bulb as soon as possible.
Bi-Xenon* headlamp:

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Display symbol
Display messages
Possible cause/consequence
Possible solution

445 Practical hints
What to do if …
Display symbol
Display messages
Possible cause/consequence
Possible solution
.
Marker lamp
,
front left
The left front side marker lamp is
malfunctioning.

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

Replace the bulb as soon as possible.
Parking lamp, front left
Substitute bulb on
The left front parking lamp is
malfunctioning. A substitute
bulb is being used.

Replace the bulb as soon as possible.
Parking lamp, front right

Substitute bulb on
The right front parking lamp is
malfunctioning. A substitute
bulb is being used.

Replace the bulb as soon as possible.
Reverse lamp,
left
The left backup lamp is
malfunctioning.

Replace the bulb as soon as possible.
Reverse lamp,
right
The right backup lamp is
malfunctioning.

Replace the bulb as soon as possible.
Switch off lights
You have removed the SmartKey
from the starter switch and
opened the driver’s door or
removed the SmartKey with
KEYLESS-GO* from the vehicle
and left the headlamps on.

Turn the exterior lamp switch toM
(page 147).

446 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause/consequence
Possible solution
.
Tail lamp, left
Substitute bulb on
The left tail lamp is malfunction-
ing. A substitute bulb is being
used.

Replace the bulb as soon as possible.
Tail lamp, right
Substitute bulb on
The right tail lamp is malfunc-
tioning. A substitute bulb is
being used.

Replace the bulb as soon as possible.
Turn signal, rear left
Substitute bulb on
The left rear turn signal lamp is
malfunctioning. A substitute
bulb is being used.

Replace the bulb as soon as possible.
Turn signal, rear right
Substitute bulb on
The right rear turn signal lamp is
malfunctioning. A substitute
bulb is being used.

Replace the bulb as soon as possible.
Turn signal, front left
Substitute bulb on
The left front turn signal lamp is
malfunctioning. A substitute
bulb is being used.

Replace the bulb as soon as possible.
Turn signal, front right
Substitute bulb on
The right front turn signal lamp is
malfunctioning. A substitute
bulb is being used.

Replace the bulb as soon as possible.

465 Practical hints
Replacing bulbs
Replacing bulbs
Bulbs
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.
iIf the headlamps or front fog lamps are
fogged up on the inside as a result of
high humidity, driving the vehicle a dis-
tance with the lights on should clear up
the fogging.
iBackup bulbs will be brought into use
when the following lamps malfunction:

Turn signal lamps


Brake lamps


Parking lamps


Tail lamps
Read and observe messages in the
multifunction display (
page 442).