Page 210 of 416

210 Controls in detailUseful featuresIf you live in Canada or if you are having dif-
ficulties programming a gate operator (re-
gardless of where you live) by using the
programming procedures, replace step 4
with the following:
Step 4:
Continue to press and hold the inte-
grated signal transmitter button (2,
3 or4) while you press and re-press
(“cycle”) your hand-held remote con-
trol transmitter6 every two seconds
until the frequency signal has bee-
learned. Upon successful training, the
indicator lamp1 will flash slowly and
then rapidly after several seconds.
Proceed with programming step 5 and
step 6 to complete. Operation of integrated remote control
Switch on the ignition (
page 35).
Select and press the appropriate inte-
grated signal transmitter button (2,
3 or4) to activate the remote con-
trolled device.
The integrated remote control trans-
mitter continues to send the signal as
long as the button is pressed – up to
20 seconds.
Erasing the integrated remote control
memory
Switch on the ignition (
page 35).
Simultaneously hold down the signal
transmitter buttons2 and 4, for ap-
proximately 20 seconds, until the indi-
cator lamp1 blinks rapidly. Do not
hold for longer than 30 seconds.
The codes of all three channels are
erased.Reprogramming a single integrated sig-
nal transmitter button
To program a device using a signal trans-
mitter button previously trained, follow
these steps:
Press and hold the desired signal trans-
mitter button (2, 3 or4). Do not re-
lease the button.
The indicator lamp will begin to flash af-
ter 20 seconds. Without releasing the
integrated signal transmitter button,
proceed with programming starting
with step 3.iIf you sell your vehicle, erase the codes
of all three channels.
Page 211 of 416
211 Controls in detail
Useful features
Heated steering wheel
The steering wheel heater warms up the
leather area of the steering wheel.
The lever with the heated steering wheel
switch is on the lower left-hand side of the
steering wheel.
1Switching on
2Switching off
3Indicator lampSwitching on
Switch on the ignition (
page 35).
All lamps in the instrument cluster
come on.
Turn switch at the tip of lever in direc-
tion of arrow1.
The steering wheel is heated. Indicator
lamp3 comes on.Switching off
Turn switch at the tip of lever in direc-
tion of arrow2.
The steering wheel heater is turned off.
Indicator lamp3 goes out.iThe steering wheel heating switches off
automatically while indicator lamp3
remains on when the temperature of
the vehicle interior is above 86°F
(30°C)
the steering wheel is above
82°F (28°C)
Indicator lamp3 flashes or switches
off in case of
power surge or undervoltage
a steering wheel heating
malfunction
Page 239 of 416

239 Operation
Engine compartment
Closing
Lower hood and let it drop into lock
from a height of approximately 0.7 ft
(20 cm).
The hood will lock audibly.
Check to make sure the hood is fully
closed.
If you can raise the hood at a point
above the turn signals to the left and
right of the hood, then it is not properly
closed. Open it again and let it drop
with somewhat greater force.
Engine oil
The amount of oil your engine needs will
depend on a number of factors, including
driving style. Higher oil consumption can
occur when
the vehicle is new
the vehicle is driven frequently at
higher engine speeds
Engine oil consumption checks should only
be made after the vehicle break-in period.
Warning!
G
The engine is equipped with a transistorized
ignition system. Because of the high voltage,
it is dangerous to touch any components (ig-
nition coils, spark plug sockets, diagnostic
socket) of the ignition system
with the engine running
while starting the engine
if ignition is “on” and the engine is
turned manually
Warning!
G
Be careful that you do not close the hood on
anyone.!Do not push the hood closed manually,
as this could damage it.
iDo not use any special lubricant addi-
tives, as these may damage the drive
assemblies. Using special additives not
approved by Mercedes-Benz may
cause damage not covered by the
Mercedes-Benz Limited Warranty.
More information on this subject is
available at any Mercedes-Benz Light
Truck Center.
Page 240 of 416

240 OperationEngine compartmentChecking engine oil level with the
control system
When checking the oil level
the vehicle must be parked on level
ground
with the engine at operating tempera-
ture, the vehicle must have been sta-
tionary for at least five minutes with the
engine turned off
with the engine not at operating tem-
perature yet, the vehicle must have
been stationary for at least 30 minutes
with the engine turned off
To check the engine oil level via the
multifunction display, do the following:
Switch on the ignition (
page 35).
The standard display (
page 123) should
appear in the multifunction display.
Press buttonk orj on the
steering wheel until the following
message is seen in the multifunction
display:ENGINE OIL LEVEL
MEASURING NOW
MEASURE. CORRECT
ONLY IF VEH. LEVELOne of the following messages will
subsequently appear in the indicator:
ENGINE OIL LEVEL
OK
ADD 1.0 Qt. TO
REACH MAX. OIL LEVEL!(Canada:
1.0 LITER
)
ADD 1.5 Qts. TO
REACH MAX. OIL LEVEL!(Canada:
1.5 LITERS
)
ADD 2.0 Qts. TO
REACH MAX. OIL LEVEL!(Canada:
2.0 LITERS
)
If necessary, add engine oil.
For adding engine oil see (
page 243).
For more information on engine oil, see the
“Technical data” section (
page 374) and
(
page 375).iIf you want to interrupt the checking
procedure, press thek orj
button on the multifunction steering
wheel.
Page 241 of 416

241 Operation
Engine compartment
Other display messages
If the SmartKey is not turned to position2
in the starter switch, the following
message will appear:FOR ENGINE OIL LEVEL
SWITCH ON IGNITION!
Switch on the ignition (
page 35).
If you see the message:
OBSERVE WAITING PERIOD
If engine is at operating temperature,
wait five minutes before repeating
check procedure.
If engine is not at operating tempera-
ture yet, wait 30 minutes before re-
peating check procedure.If you see the message:
ENGINE OIL LEVEL
NOT WHEN ENGINE ON!
Turn off the engine.
If the engine is at operating tempera-
ture, wait five minutes before checking
oil.
If the engine is not at operating temper-
ature yet, you must wait 30 minutes
before checking oil.
If there is excess engine oil with the engine
at normal operating temperature, the
following message will appear:
ENGINE OIL LEVEL
REDUCE OIL LEVEL
Have excess oil siphoned or drained
off. Contact an authorized
Mercedes-Benz Light Truck Center.For more information on messages in the
multifunction display concerning engine
oil, see the “Practical hints” section
(
page 296). !Excess oil must be siphoned or drained
off. It could cause damage to the
engine and catalytic converter not
covered by the Mercedes-Benz Limited
Warranty.iPerform the engine oil level check with
the dipstick if it cannot be completed
with the control system (
page 242).
In this case we recommend that you
have the system checked at a
Mercedes-Benz Light Truck Center.
Page 277 of 416

277 Operation
Maintenance
Maintenance
In the “Operation” section you will find de-
tailed information on operating, maintain-
ing, and caring for your vehicle.
We strongly recommend that you have
your vehicle serviced by an authorized
Mercedes-Benz Light Truck Center, in ac-
cordance with the Maintenance Booklet at
the times called for by the maintenance
service indicator display.
Failure to have the vehicle maintained in
accordance with the Maintenance Booklet
and maintenance service indicator at the
designated times/mileage will result in ve-
hicle damage not covered by the
Mercedes-Benz Limited Warranty.
The maintenance service indicator will
notify you when your next maintenance
service is due.Starting approximately one month before
maintenance service is due, one of the fol-
lowing messages will appear in the multi-
function display while you are driving or
when you switch on the ignition (example
service A):
SERVICE A IN XX DAYS
SERVICE A IN XX MILES (KM)
SERVICE A DUE NOW!The type of maintenance service due is in-
dicated in the speedometer display field:
9Basic service (A)
½Extended service (B)
iVehicles equipped with FSS (F
lexible
S
ervice S
ystem) only (Canada
vehicles): The interval between mainte-
nance services depends on your driving
habits. A gentle driving style, moderate
engine speeds and the avoidance of
short-distance trips will lengthen the
interval between maintenance
services.
Page 278 of 416

278 OperationMaintenanceClearing the maintenance service indicator
The maintenance service indicator is auto-
matically cleared
after ten seconds when you switch on
the ignition or when reaching the main-
tenance service threshold while driving
after 30 seconds, once the suggested
maintenance service term has passed
You can also clear it yourself.
Press the reset button on the instru-
ment cluster (
page 25).
Maintenance service term exceeded
If you have exceeded the suggested main-
tenance service term, you will see the fol-
lowing message in the multifunction
display:SERVICE A EXCEEDED BY XX DAYS
SERVICE A EXCEEDED BY XX MILES (KM)In addition, a signal sounds when the mes-
sage appears.
Any authorized Mercedes-Benz Light Truck
Center will reset the maintenance service
indicator following a completed mainte-
nance service.Calling up the maintenance service
indicator
Switch on the ignition (
page 35).
The standard display of the control sys-
tem appears (
page 123).
Press buttonk orj on the mul-
tifunction steering wheel until the
maintenance service indicator with the
service symbol9 or´ and the
service deadline appears in the multi-
function display.
Page 288 of 416

288 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 ignition,
have the respective bulb checked and re-
placed if necessary.Problem
Possible cause
Suggested solution
-
The yellow ABS indicator lamp
comes on while driving.
You engaged the differential locks. The ABS,
ESP, BAS, EBB and 4-ETS are switched off.
The driving systems will switch on
again after the differential locks have
been disengaged.
The ABS has detected a malfunction and has
switched off. The ESP, BAS, EBB and 4-ETS
are also switched off (see messages in dis-
play).
If the ABS control unit is malfunctioning, oth-
er systems such as the navigation system or
Rear Parking Assist* may also malfunction.
The brake system is still functioning normally
but without the 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
Center as soon as possible.
Failure to follow these instructions in-
creases the risk of an accident.