Page 232 of 376

232 OperationEngine compartment1Oil dipstick
2Oil filler cap
Unscrew oil filler cap2 from filler
neck.
Add engine oil as required. Be careful
not to overfill with oil.
Be careful not to spill any oil when adding.
Avoid environmental damage caused by oil
entering the ground or water.
Screw oil filler cap2 back on filler
neck.
For more information on engine oil, see the
“Technical data” section (
page 333) and
(
page 334).
Transmission fluid level
The transmission fluid level does not need
to be checked. The transmission has a per-
manent supply of automatic transmission
fluid.
If you notice transmission fluid loss or gear
shifting malfunctions, have an authorized
Mercedes-Benz Light Truck Center check
the automatic transmission.Coolant level
The engine coolant is a mixture of water
and anticorrosion/antifreeze.
When checking the coolant level,
the vehicle must be parked on level
ground.
the engine must be cool. The coolant
level should reach the COLD LEVEL
mark in the reservoir.
!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.
Page 272 of 376

272 Practical hintsWhat to do if …Display symbol
Display message
Possible cause
Possible solution
:
ENGINE OIL LEVEL
REDUCE OIL LEVEL
!
You have added too much engine oil.
There is a risk of damaging the engine or
the catalytic converter.
Have oil siphoned or drained off. Ob-
serve all legal requirements with re-
spect to its disposal.
ENGINE OIL LEVEL
STOP, ENGINE OFF!
There is no oil in the engine. There is a
danger of engine damage.
Carefully bring the vehicle to a halt as
soon as possible.
Turn off the engine.
Add engine oil (
page 231) and check
the engine oil level (
page 229).
ENGINE OIL
VISIT WORKSHOP!
It may be that there is water in the engine
oil.
Have the oil checked.
ENGINE OIL LEVEL
VISIT WORKSHOP!
The engine oil has dropped to a critical
level.
Check the engine oil level
(page 229) and add oil as required
(page 231).
If you must add engine oil frequently,
have the engine checked for possible
leaks.
The measuring system is malfunctioning.
Have the measuring system checked
by an authorized Mercedes-Benz Light
Truck Center.
Page 281 of 376

281 Practical hints
What to do if …
Display symbol
Display message
Possible cause
Possible solution
§
TC SHIFT
CANCELLED
The shift process in the transfer case was
canceled because of a malfunction.
Repeat the shift process (
page 145).
TC SHIFT CONDITIONS
NOT FULFILLED
You have not met the shift conditions for
a selection process in the transfer case.
Repeat the shift process (
page 145).
TRANSFER CASE
VISIT WORKSHOP!
The transfer case is malfunctioning.
Do not switch the transfer case on.
Visit an authorized Mercedes-Benz
Light Truck Center as soon as possi-
ble.
K
CLOSE
SUNROOF!
You have opened the driver’s door with
the SmartKey removed from the starter
switch and the sliding/pop-up roof open.
Close the sliding/pop-up roof
(page 166).
J
CLOSE
SUNROOF!
You have opened the driver’s door with
the SmartKey removed from the starter
switch and the sliding/pop-up roof open.
Close the sliding/pop-up roof
(page 166).
L
TELE AID
DRIVE TO WORKSHOP!
One or more main functions of the Tele
Aid system are malfunctioning.
Have the Tele Aid system checked by
an authorized Mercedes-Benz Light
Truck Center.
ì
FUNCTION
NOT AVAILABLE!
This display appears if button ì or
í on the multifunction steering wheel
is pressed and the vehicle is not equipped
with a telephone.
Page 343 of 376

343 Technical terms
ABS
(A
ntilock B
rake S
ystem)
Prevents the wheels from locking up
during braking so that the vehicle can
continue to be steered.
BabySmart
TM airbag deactivation
system
This system detects if a special system
compatible child restraint seat is in-
stalled on the front passenger seat. The
system will automatically deactivate
the passenger front airbag when such a
seat is properly installed (indicator
lamp7 in the center console
comes on). See your authorized
Mercedes-Benz Light Truck Center for
availability.
BabySmartTM compatible child seats
Special restraint system for children.
The sensor system for the passenger
seat prevents deployment of the pas-
senger front airbag if a BabySmart
TM
compatible child seat is installed.BAS
(B
rake A
ssist S
ystem)
System for potentially reducing braking
distances in emergency braking situa-
tions. The system is activated when it
senses an emergency based on how
fast the brake is applied.
CAC
(C
ustomer A
ssistance C
enter)
Mercedes-Benz customer service cen-
ter, which can help you with any ques-
tions about your vehicle and provide
assistance in the event of a break-
down.
CAN system
(C
ontroller A
rea N
etwork)
Data bus network serving to control ve-
hicle functions such as door locking or
windshield wiping.
Cockpit
All instruments, switches, buttons and
indicator/warning lamps in the passen-
ger compartment needed for vehicle
operation and monitoring.COMAND
(C
ockpit M
anagement and D
ata Sys-
tem)
Information and operating center for
vehicle sound and communications
systems, including the radio and the
navigation system, as well as other op-
tional equipment (CD changer, tele-
phone, etc.).
Control system
The control system is used to call up
vehicle information and to change
component settings. Information and
messages appear in the multifunction
display. The driver uses the buttons on
the multifunction steering wheel to
navigate through the system and to ad-
just settings.
Page 347 of 376

347 Technical terms
Tele Aid System
(T
elematic A
larm I
dentification on
D
emand)
The Tele Aid system consists of three
types of response: automatic and man-
ual emergency, roadside assistance
and information. Tele Aid is initially ac-
tivated by completing a subscriber
agreement and placing an acquain-
tance call.
The Tele Aid system is operational pro-
vided that the vehicle’s battery is
charged, properly connected, not dam-
aged and cellular and GPS coverage is
available.
Telematics*
A combination of the terms “telecom-
munications” and “informatics”.
Tightening torque
Force times lever arm (e.g. a lug
wrench) with which threaded fasteners
such as wheel bolts are tightened.Tire speed rating
Part of tire designation; indicates the
speed range for which a tire is ap-
proved.
Traction
Force exerted by the vehicle on the
road via the tires.
Transfer case
Speed of rotation/torque converter
that works together with the ->auto-
matic transmission. In the LOW mode
off-road position, the transfer case de-
creases the output rotational speed of
the ->automatic transmission by ap-
proximately half. This results in a corre-
sponding increase of torque on the
drive axles.
The vehicle then has nearly double the
driving force but drives only approxi-
mately half as fast.VIN
(V
ehicle I
dentification N
umber)
The number set by the manufacturer
and placed on the body to uniquely
identify each vehicle produced.
Voice control system*
Voice control system for car phones,
portable cell phones and audio sys-
tems (radio, CD, etc.).
Page 354 of 376

354 IndexCrossing obstacles 218
Cruise control 169, 344
Canceling 170
Driving downhill 170
Driving uphill 170
Fine adjustment 171
Setting current speed 170
Setting speed 171
Cruise control lever 169
Cup holder
In rear passenger footwell 186
Cup holders 185
Cleaning 248
In front passenger footwell 185
Next to the armrest 185
Customer Assistance Center (CAC) 343D
Daytime running lamp mode 106
Setting 129
Deactivating
Air conditioning (cooling) 162
Air recirculation mode 161
Alarm 83
Anti-theft alarm system 83
Central locking (control system) 133
Cruise control 170
Defrost 160
ESP 79
Exterior lamps 105
Exterior lamps delayed
switch-off 131
Hazard warning flasher 108
Headlamps 52
Immobilizer 82
Interior lighting delayed
switch-off 132
Rear window defroster 155
Tow-away alarm 84
Deep water see Standing waterDefogging
Windshield 160
Defrosting 160
Delayed switch-off
Exterior lamps 131
Interior lighting 132
Dialing
A number (telephone) 139
Differential locks 148, 344
Switching off 151
Switching on 150
Difficulties
While driving see Problems while driv-
ing
With starting 44
Digital speedometer 120
Direction of rotation (tires) 237
Discharged battery
Jump starting 313
Disconnecting
Vehicle battery 312
Display
Selecting 129
Page 356 of 376

356 IndexEmergency operation (Limp Home
Mode) 144
Emergency operations
Closing sliding/pop-up roof 292
Locking the vehicle 288
Opening sliding/pop-up roof 292
Remote door unlock 197
Unlocking the tailgate 287
Unlocking the vehicle 287
Emergency tensioning device see ETD
Emission control 222
Emission control label 326
Ending
A call (telephone) 138
Engine
Compartment 227
Message in display 256
Starting with the key 44
Technical data 328
Turning off with the key 52
Engine cleaning 246Engine compartment 227
Hood 227
Engine malfunction indicator lamp 25,
256
Engine number 344
Engine oil 228, 334
Adding 231
Additives 335, 340
Checking level 228
Consumption 228
Display messages 272
Messages in display 229, 271
Oil dipstick 232
Viscosity 344
Engine oil level see Oil level
Enlarged cargo compartment 176
ESP 25, 74, 78, 344
Messages in display 263
Switching off 79
Switching on 81
Synchronizing 263
Warning lamp 257ETD 56, 65, 344
Safety guidelines 60
Exterior lamp switch 104
Exterior lamps
Delayed switch-off 131
Exterior rear view mirrors
Adjusting 38
Parking position for 135
F
Fahrenheit
Setting temperature units 127
Fastening the seat belts 40
Fine adjustment
Cruise control 171
First aid kit 283
Flat tire 306
Lowering the vehicle 310
Mounting the spare wheel 307
Spare wheel 285
Page 362 of 376

362 IndexMirrors
Activating exterior rear view mirror
parking position 153
Adjusting 38
Automatic antiglare for rear view
mirror 152
Exterior rear view mirror 38
Exterior rear view mirror parking
positions 135
Interior rear view mirror 38
Storing exterior rear view mirror park-
ing position 103
MON 225
MON (Motor Octane Number) 345
Monitoring reach
Rear Parking Assist* 173
Mph or km/h in speedometer
setting 128
Multicontour seat* 97
Multifunction display 115, 345
Selecting language 128
Standard display 119Multifunction display messages
ABS 261
BAS 261
Battery 265, 266
Brake fluid 266
Brake pads 266
Check engine 256
Coolant 268, 269
Display 282
Doors 271
Engine 256
Engine oil level 271
ESP 263
Fuel reserve tank 273
Hood 273
Key 273
Lamps 274, 276
Parking brake 267
Sunroof 281
Tailgate 282
Tele Aid 281
Telephone* 281
Washer fluid 282
Multifunction steering wheel 26, 116
Buttons 116N
Navigation system
Operating 122
See separate COMAND operating in-
structions
Night security illumination 106
Setting 131
O
Occupant safety 56
Airbags 57
Children in the vehicle 65
Fastening the seat belt 40
Infant and child restraint systems 66
LATCH child seat anchors 70
Seat belts 40, 60
Odometer, main 25
Off-road driving 213
Checklist 215
Crossing obstacles 218
Driving through water 217
Returning 220
Rules 214
Special driving features 214
Steep terrain 216