Trailer towing
................................. 146
Transmission oil change ................328
Automatic transmission emer-
gency mode ....................................... 147
Auxiliary heating Activating/deactivating heater
booster mode ................................ 130
Conditions for switching on ...........123
Heating time .................................. 123
Important safety notes ..................122
Operating with the button (control
panel) ............................................ 124
Operation with the remote
control ........................................... 125
Operation with the timer ................127
Problem (malfunction) ...................132
Selecting a switch-on time ............. 124
Setting the switch-on time .............125
see Auxiliary heating
AUX port ............................................ .240
Axle load, permissible (trailer tow-
ing) ...................................................... 333 B
Backup lamps Replacing bulbs ............................. 103
Backup lamps (Chassis Cab)
Replacing bulbs ............................. 104
BAS (Brake Assist System)
Display message ............................ 207
Function/notes ................................ 57
Indicator lamp ................................ 221
Basic settings
see Settings
Battery
Isolating switch .............................. 136
Replacing (SmartKey) ......................69
Battery (SmartKey)
Checking .......................................... 68
Important safety notes ....................68
Replacing ......................................... 69
Battery (vehicle)
Care ............................................... 266
Charge indicator lamp ...................225
Charging ........................................ 266
Disconnecting and connecting
(driver's footwell) ........................... 262Disconnecting and connecting
(engine compartment)
...................264
Disconnecting and reconnecting
(base of driver's seat) ....................265
Display message ............................ 219
Important safety notes ..................260
Installing/removing (base of driv-
er's seat) ........................................ 266
Installing/removing (driver's foot-
well) ............................................... 263
Installing/removing (engine com-
partment) ....................................... 265
Jump starting ................................. 278
Location ......................................... 261
Removing/installing the floor cov-
ering (driver's footwell) ..................261
Before driving off
Important safety notes ..................138
Belt
see Seat belts
Bleeding the fuel system ..................143
Blind Spot Assist Activating/deactivating .................166
Notes/function .............................. 164
Trailer towing ................................. 166
Bodies
Body/equipment mounting direc-
tives for trucks ................................. 28
Bottle holder ...................................... 237
see Cup holder
Brake Assist System
see BAS (Brake Assist System)
Brake fluid
Checking the level .........................256
Display message ............................ 208
Notes ............................................. 328
Warning lamp ................................. 222
Brake force distribution, elec-
tronic
see EBD (electronic brake force
distribution)
Brake lamps
Replacing bulbs ............................. 103
Brake lamps (Chassis Cab)
Replacing bulbs ............................. 104
Brake linings
Display message ............................ 207
Indicator lamp ................................ 225 Index
5
Electrical fuses
see Fuses
Electrical step
Cleaning ........................................ .271
Display message ............................ 219
Emergency release ..........................74
Function .......................................... .74
Important safety notes ....................73
Indicator lamp ................................ 230
Manual retraction ............................ 74
Obstacle detection ........................... 74
Electrical system
Battery main switch .......................136
Electronic Stability Program
see ESP ®
(Electronic Stability Program)
Emergency exit .................................... 61
Emergency exit window .....................61
Emergency Tensioning Devices Function .......................................... .50
Safety guideline s............................. 43
Emissions control
Service and warranty information ....23
Engine
ADR (working speed governor) ......172
Changing the power output .............25
Check Engine warning lamp ........... 227
Cleaning instructions .....................269
ECO Start (Euro 6 engines) ............140
Engine number ............................... 320
Engine speed setting (working
mode) ............................................ 173
Irregular running ............................ 143
Jump-starting ................................. 278
Operating safety .............................. 25
Starting .......................................... 138
Starting problems ..........................143
Switching off .................................. 152
Tow-starting (vehicle) ..................... 282
Engine, jump-starting .......................278
Engine electronics Notes ............................................. 318
Problem (malfunction) ...................143
Engine oil
Adding ........................................... 254
Additives ........................................ 326
Checking the oil level (on-board
computer) ...................................... 252Checking the oil level using the
dipstick
.......................................... 253
Display message ............................ 216
Filling capacity ............................... 327
Information about oil consump-
tion ................................................ 327
Mixing ............................................ 327
Notes about oil grades ................... 326
Oil change ...................................... 327
Oil level (note) ............................... 252
Viscosity ........................................ 326
Warning lamp ................................. 225
Engine speed setting (working
mode) ................................................. 172
Equipment/conversions .....................27
ESP ®
(Electronic Stability Pro-
gram) Display message ............................ 209
Important safety information ...........57
Indicator lamp ................................ 224
Warning lamp ................................. 221
Exhaust check ................................... 154
Exhaust gas aftertreatment ...............27
DEF level indicator .........................184
DEF reducing agent .......................324
Diesel Exhaust Fluid (DEF) .............324
Display messages (vehicles with-
out steering wheel buttons) ...........202
Display messages (vehicles with
steering wheel buttons) .................213
Indicator lamp ....................... 224, 228
Malfunction ................................... .213
Refilling DEF .................................. 149
Exterior lighting .................................. .92
see Lights
Exterior mirrors
Adjusting ......................................... 89
Important safety notes ....................89
Eyeglasses compartment .................233 F
Fire extinguisher ............................... 278
First-aid kit ......................................... 277
Flat tire Changing a wheel/mounting the
spare wheel ................................... 308
General notes ................................ 30710
Index
Ventilation
Setting the vents ........................... 121
Voltage supply
Fuses ............................................. 283W
Warning and indicator lamps Brakes ........................................... 222
Check Engine ................................. 227
Coolant .......................................... 226
Diesel Exhaust Fluid (DEF) .............224
Electrical step ................................ 230
ESP ®
.............................................. 221
ESP ®
function ................................ 224
Overview .......................................... 35
Seat belt ........................................ 230
Warning- and indicator lamps
ABS ................................................ 221
Air filter .......................................... 228
ASR ................................................ 221
BAS ................................................ 221
Battery charge ............................... 225
Brake wear .................................... 225
Bulbs .............................................. 230
Doors ............................................. 230
Engine oil level ............................... 225
Preglow .......................................... 228
Reserve fuel ................................... 227
Tire pressure monitor ....................229
Water separator ............................. 229
Windshield washer fluid .................229
Warning lamp .................................... 277
Warning triangle ................................ 277
Washer fluid Adding ........................................... 257
Capacities ...................................... 331
Display message ............................ 220
Indicator lamp ................................ 229
Notes ............................................. 330
Wiping with .................................... 107
Wheels
Changing a wheel .......................... 307
Checking ........................................ 287
Cleaning ......................................... 269
Important safety notes ..................286
Interchanging/changing ................307
Mounting a wheel .......................... 308Removing and mounting the spare
wheel
............................................. 314
Storing ........................................... 308
Tightening torque ........................... 312
Window curtain air bag ....................... 46
Windows see Side windows
Windshield
Defrosting ...................................... 118
Windshield heating
Problem (malfunction) ...................119
Switching on/off ........................... 119
Windshield washer fluid
Adding ........................................... 257
Indicator lamp ................................ 229
Windshield wipers
Problem (malfunction) ...................110
Rain and light sensor .....................107
Rear window wiper ........................108
Replacing the wiper blades ............108
Setting the sensitivity (vehicles
with steering wheel buttons and
rain/light sensor) ........................... 196
Switching on/off ........................... 107
Wiping with windshield washer
fluid ............................................... 107
Winter diesel ..................................... 323
Winter driving Slippery road surfaces ...................158
Snow chains .................................. 289
Winter operation
General notes ................................ 288
Radiator cover ................................. 28
Winter tires
M+S tires ....................................... 288
Setting a limit speed ......................155
Wiper blades
Cleaning ......................................... 270
Replacing ....................................... 108
Workshop
see Qualified specialist workshop Index
21
Instrument cluster
Displays and controls
Instrument cluster on vehicles without steering wheel buttons
Instrument cluster in vehicles with steering-wheel buttons
Function Page
0043
Speedometer 183
0044
Tachometer 183
0087
0074,
0075Brightens/dims the
instrument cluster lighting 183
0085
Fuel gage with fuel filler flap
location indicator
183
0083
Display
Vehicles without steering
wheel buttons
184
Vehicles with steering
wheel buttons 186 Function Page
0084
Reset button
0045 34
006B
Menu button
0079 • changes standard display 184
• selects menus 185
006C
Service button
0098 Checks the engine oil level 25234
Instrument clusterAt a glance
Indicator and warning lamps
Instrument cluster on vehicles without steering
wheel buttons Instrument cluster in vehicles with steering-wheel buttons
Function Page
0043
Speedometer with warn-
ing and indicator lamps
0072
ESP
®
warning lamp 221
ASR warning lamp 221
003F
Coolant level too low 226
00AC
Coolant temperature too
high 226
0075
Restraint systems malfunc-
tion 42
0065
Brake fluid level too low 222
EBD malfunctioning 221
Trailer brake force booster
malfunction
222
00B2
Engine oil level warning 225 Function Page
00B9
Check Engine indicator
lamp
227
0028
Preglow 138
Preglow system malfunc-
tion
228
0044
Indicator and warning
lamps
004A
Left-hand turn signal 95
0025
ABS malfunction 221
0077
Tire pressure loss or the tire
pressure monitor is mal-
functioning (USA only)
229
Tire pressure loss (Canada
only)
294Instrument cluster
35At a glance
You can find further information on winter
tires and snow chains in the "Wheels and
tires" section (Y page 288). Driving off-road
Important safety notes G
WARNING
If you drive on a steep incline at an angle or
turn when driving on an incline, the vehicle
could slip sideways, tip and rollover. There is
a risk of an accident.
Always drive on a steep incline in the line of
fall (straight up or down) and do not turn the
vehicle. G
WARNING
When driving off-road, your body is subject to
forces from all directions, due to the uneven
surface. You could be thrown from your seat,
for instance. There is a risk of injury.
Always wear a seat belt, even when driving off-
road. G
WARNING
If you drive over obstacles or in ruts, the steer-
ing wheel may jerk out of your grip, causing
injury to your hands.
Always hold the steering wheel firmly with
both hands. When driving over obstacles, you
must expect steering forces to increase
briefly and suddenly. G
WARNING
Flammable material such as leaves, grass or
twigs may ignite if they come into contact with
hot parts of the exhaust system. There is a
risk of fire.
When driving off road or on unpaved roads,
check the vehicle's underside regularly. In
particular, remove parts of plants or other
flammable materials which have become
trapped. In the case of damage, contact a
qualified specialist workshop. !
When driving off-road or on unpaved sur-
faces, check the underside of the vehicle
and the wheels and tires at regular inter-
vals. In particular, remove any trapped for-
eign objects, e.g. stones and branches.
Such foreign objects may:
R damage the chassis, the fuel tank or the
brake system
R cause imbalances and thus vibrations
R be flung out when you continue driving
If there is any damage, inform a qualified
specialist workshop.
! If there are steep gradients while driving
off-road, a sufficient filling level in the DEF
tank must be ensured. Make sure for this
reason that there is a minimum fill level of
ten liters before driving off-road.
When driving off-road and on construction
sites, sand, mud and water mixed with oil, for
example, may get into the brakes. This may
lead to a reduction in braking performance or
total brake failure, also as a result of
increased wear. The braking characteristics
will vary depending on the material that has
got into the system. Clean the brakes after
driving off-road. If you then notice reduced
braking performance or hear scraping noises,
have the brake system checked at a qualified
specialist workshop. Adjust your driving style
to the changed braking characteristics.
Driving off-road or on construction sites
increases the possibility of vehicle damage
which may in turn lead to the failure of certain
assemblies and systems. Adapt your driving
style to the off-road driving conditions. Drive
carefully. Have any vehicle damage rectified
at a qualified specialist workshop as soon as
possible.
When driving on rough terrain, do not shift the
transmission into the neutral position. You
could lose control when attempting to brake
the vehicle with the service brake. If your
vehicle cannot manage an uphill slope, drive
back down the slope in reverse gear. Driving tips
159Driving and parking Z
When loading your vehicle for driving off-road
or on a construction site, keep the vehicle's
center of gravity as low as possible.
Checklist before driving off-road X
Check the fuel and DEF levels
(Y page 183) and top up (Y page 150).
X Engine: check the oil level (Y page 252)
and add oil (Y page 254).
Before driving up or down steep gradients,
fill the oil to the maximum level.
i If you drive up or down steep gradients,
the 00B2 symbol may appear in the display.
The engine operating safety is not put at
risk if you have filled the engine oil to the
maximum level before the journey.
X Vehicle tool kit: check that the jack is
working (Y page 276).
X Make sure that a wheel bolt wrench
(Y page 276), wooden underlay for the
jack, a robust tow cable and a folding spade
are carried in the vehicle.
X Wheels and tires: check the tire tread
depth (Y page 287) and tire pressure
(Y page 290).
Rules for driving off-road !
Always bear the vehicle's ground clear-
ance in mind and avoid obstacles, e.g. deep
ruts.
Obstacles may damage the following parts
of the vehicle:
R the chassis
R the drive train
R the fuel and supply tanks
For this reason, you should always drive
slowly when driving off-road. If you have to
drive over obstacles, have the co-driver
direct you.
i We recommend that you additionally
carry a shovel and a recovery rope with
shackle in the vehicle. R
Ensure that loads and items of luggage are
securely stowed or lashed down
(Y page 242).
R Before driving off-road, stop the vehicle and
shift to a low gear.
R If the surface demands it, temporarily deac-
tivate ASR when pulling away (Y page 60).
R Only drive off-road with the engine running
and a gear engaged.
R Drive slowly and smoothly. Walking pace is
necessary in many situations.
R Avoid spinning the drive wheels.
R Make sure that the wheels always remain
in contact with the ground.
R Drive with extreme care over unknown ter-
rain where you can only see for a short dis-
tance. As a precaution, get out of the vehi-
cle to take a look at the route to be taken
in advance.
R Check the water depth before fording.
R Watch out for obstacles (e.g. rocks, holes,
tree stumps and ruts).
R Avoid edges where the surface could crum-
ble or break away.
Checklist after driving off-road !
If you detect damage to the vehicle after
driving off-road, have the vehicle checked
immediately at a qualified specialist work-
shop.
Off-road driving places a higher demand on
your vehicle than normal road operation.
Check your vehicle after driving on rough ter-
rain. By doing so you will notice any damage
in good time and reduce the risk of an acci-
dent for yourself and other road users. Clean
your vehicle thoroughly before driving on pub-
lic roads.
Observe the following points after driving off-
road, on construction sites and before driving
on public roads:
X Activate ASR (Y page 60).
X Clean the headlamps and tail lamps and
check them for damage. 160
Driving tipsDriving and parking
Useful information
This Operator's Manual describes all models
as well as standard and optional equipment
of your vehicle that were available at the time
of going to print. Country-specific variations
are possible. Note that your vehicle may not
be equipped with all of the described func-
tions. This also applies to systems and func-
tions relevant to safety.
Read the information on qualified specialist
workshops (Y page 26). Important safety notes
G
WARNING
If you are driving and reach through the steer-
ing wheel to operate the adjustment knob,
you could lose control of the vehicle. There is
a risk of an accident and injury.
Only operate the adjustment knobs when the
vehicle is stationary. Do not reach through the
steering wheel when driving. G
WARNING
If you operate information systems and com-
munication equipment integrated in the vehi-
cle while driving, you will be distracted from
traffic conditions. You could also lose control
of the vehicle. There is a risk of an accident.
Only operate the equipment when the traffic
situation permits. If you are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the equip-
ment when the vehicle is stationary. G
WARNING
If the instrument cluster has failed or mal-
functioned, you may not recognize function
restrictions in systems relevant to safety. The
operating safety of your vehicle may be
impaired. There is a risk of an accident.
Drive on carefully. Have the vehicle checked
at a qualified specialist workshop immedi-
ately. If uncertainties regarding the operating safety
of the vehicle arise when continuing the jour-
ney, stop the vehicle, paying attention to road
and traffic conditions. Instrument cluster
Overview
0043
Instrument cluster on vehicles without
steering wheel buttons
0044 Instrument cluster in vehicles with steer-
ing-wheel buttons
0087 0074/0075 adjustment button, 0079menu but-
ton, 0045reset button, 0098service button
(engine oil level check)
You will find a full overview of the instrument
cluster in the "At a glance" section
(Y page 34).
The display in the instrument cluster is acti-
vated when you:
R open the driver's door
R turn the key to position 2in the ignition lock
R press the 0045reset button
R switch on the lights
The display switches off automatically after
approximately 30 seconds if:
R the vehicle lighting is not switched on.
R the key is in position 0in the ignition lock. 182
Instrument clusterOn-board computer and displays