Reheat function (air dehumidifica-
tion).............................................. .103
Setting the air distribution ............. 102
Setting the air vents ......................1 05
Setting the airflow ......................... 102
Setting the temperature ................ 102
Switching air-recirculation mode
on/off ............................................ 104
Switching on/off ........................... 101
Switching the rear window
defroster on/off ............................ 104
Switching windshield heating on/
off ..................................................1 04
Cockpit
Overview .......................................... 31
see Instrument cluster
COLLISION PREVENTION ASSIST
Activating/deactivating the dis-
tance warning function .................. 143
COMAND display
Cleaning ......................................... 237
Combination switch ............................ 81
Communications equipment
Operation ....................................... 211
PND fittings ................................... 211
Ports .............................................. 211
Type approval/frequency .............. 275
Consumption statistics (on-board
computer) .......................................... 174
Control panel
Above the windshield ....................... 36
Center console ................................ 35
Climate control ................................ 35
Driver's door ....................................3 7
Left and right side of the steering
wheel ............................................... 37
Conversions/equipment .................... 27
Coolant (engine)
Adding ........................................... 223
Checking the level .........................2 22
Display message ............................ 188
Displaying the temperature (on-
board computer) ............................ 167
Filling capacity ............................... 284
Important safety notes .................. 222
Cooling
see Climate control C
ornering lamps
Replacing bulbs ............................... 87
Cornering light function
Function/notes ................................ 82
Courtesy lights
Replacing bulbs ............................... 91
Crosswind driving assistance ............ 55
Cruise control
Activating ....................................... 141
Activation conditions ..................... 140
Cruise control lever ....................... 140
Deactivating ................................... 141
Display message ............................ 190
Driving system ............................... 140
Function/notes .............................1 40
Important safety notes .................. 140
Problem (malfunction) ................... 142
Resuming the stored speed ........... 141
Setting a speed .............................. 141
Storing and maintaining current
speed ............................................. 141
Cup holder ......................................... 208
Center console .............................. 208
Cup holder
see Cup holders
Cup holders ........................................ 208
Curtains (cleaning instructions) ...... 239
Customer Assistance Center
(CAC) ..................................................... 27
Customer Relations Department ....... 27
D
Dashboard
see Cockpit
Dashboard lighting
see Instrument cluster lighting
Data
see Technical data
Daytime running lamps
Activating/deactivating (vehicles
with steering wheel buttons) ......... 171
Changing bulbs (halogen head-
lamps) .............................................. 87
Switching on/off (switch) ................ 79
Switching on/off (vehicles with-
out steering wheel buttons) ........... 164
Index7
Correct usage .................................. 41
Display message ............................ 184
Fastening ........................................ .42
Important safety guidelines .............4 0
Introduction .....................................4 0
Releasin g ......................................... 42
Warning lamp ................................. 203
Warning lamp (function) ................... 43
Seat heating ......................................... 76
Seats
Adjusting lumbar support ................ 73
Adjusting the front-passenger
seat .................................................. 73
Adjusting the head restraint ............ 76
Armrest ............................................ 76
Cleaning the cover ......................... 238
Correct driver's seat position ........... 72
Folding seat ..................................... 74
Important safety notes .................... 72
Rear bench seat ............................... 75
Seat heating .................................... 76
Setting the driver's seat ................... 73
Swivel seat ....................................... 73
Twin front-passenger seat ................ 74
Securing loads
Important safety notes .................. 214
Selector lever
Cleaning ......................................... 238
Sensors (cleaning instructions) ....... 236
Service center
see Qualified specialist workshop
Service interval display
Calling up the service due date ...... 226
Exceeding a service due date ........ 226
Notes ............................................. 226
Service due date (automatic dis-
play) ............................................... 226
Service products
Brake fluid ..................................... 283
Coolant (engine) ............................ 283
Diesel Exhaust Fluid (DEF) ............. 279
Engine oil ....................................... 280
Fuel ................................................ 277
Important safety notes .................. 277
Power steering fluid ....................... 283
Refrigerant ..................................... 284
Transmission oi l ............................. 282
W
asher fluid ................................... 284 Setting the air distribution
............... 102
Setting the airflow ............................ 102
Setting the clock
Vehicles with steering wheel but-
tons ............................................... 171
Vehicles without steering wheel
buttons .......................................... 164
Settings
Resetting all (vehicles with steer-
ing wheel buttons) ......................... 168
Resetting submenus (vehicles
with steering wheel buttons) ......... 168
Short journeys (diesel particle fil-
ter) ...................................................... 134
Side impact air bag ............................. 45
Side windows
Cleaning ......................................... 235
Hinged side windows ....................... 70
Important safety information ........... 70
Opening/closing .............................. 71
Overview .......................................... 70
Problem (malfunction) ..................... 71
Resetting ......................................... 71
Sliding door
Cleaning ......................................... 237
Closing assist ................................... 66
Important safety notes .................... 65
Opening/closing .............................. 65
Opening/closing from the inside ..... 66
Opening/closing from the out-
side .................................................. 66
SmartKey
Changing the battery ....................... 61
Changing the locking system set-
tings ............................................... 173
Checking the battery ....................... 61
Display message ............................ 193
Door central locking/unlocking ....... 59
Important safety notes .................... 59
Loss ................................................. 63
Problem (malfunction) ..................... 63
SmartKey positions (ignition lock) .. 119
Snow chains ...................................... 249
Sockets .............................................. 210
Spare wheel
General notes ................................ 273
Important safety notes .................. 272
16Index
Twin front-passenger seatStowage compartment .................. 206
Two-way radios
Type approval/frequency .............. 275
TWR (Tongue Weight Rating) (defi-
nition) ................................................. 266
U
Unlocking
From inside the vehicle (central
unlocking button) ............................. 64
USB port ............................................. 211
V
Vehicle
Data acquisition ............................... 29
Display message ............................ 192
Electronics ..................................... 275
Equipment ....................................... 22
Individual settings (vehicles with
steering wheel buttons) ................. 168
Limited Warranty ............................. 22
Loading .......................................... 258
Locking (SmartKey) .......................... 59
Lowering ........................................ 271
Maintenance .................................... 23
Operating safety .............................. 25
Parking for a long period ................ 132
Pulling away ................................... 121
Raising ........................................... 268
Registration ..................................... 27
Reporting problems ......................... 27
Securing from rolling away ............ 130
Towing away .................................. 243
Transporting .................................. 246
Unlocking (SmartKey) ...................... 59
Vehicle battery
see Battery (vehicle)
Vehicle bodies ..................................... 27
Body/equipment mounting direc-
tives for trucks ................................. 27
Vehicle data ....................................... 285
Vehicle identification number .......... 276
Vehicle identification plate .............. 276
Vehicle tool kit .................................. 240 Vents
see Air vents
Voltage supply
Fuses ............................................. 246
W
Warning Stickers ........................................... 24
Warning and indicator lamp
Diesel particle filter ....................... 201
Power assistance for the steering .. 203
Warning and indicator lamps
Brakes ........................................... 195
Check Engine ................................. 200
Coolant .......................................... 199
Diesel Exhaust Fluid (DEF) ............. 197
Electrical step ................................ 203
ESP
®.............................................. 194
ESP®function ................................ 197
Overview .......................................... 33
Seat belt ........................................ 203
Warning lamp .................................... 241
Warning triangle ................................ 241
Warning- and indicator lamps
ABS ................................................ 195
Air filter .......................................... 201
ASR ................................................ 194
BAS ................................................ 195
Battery charge ............................... 198
Brake wear .................................... 198
Bulbs .............................................. 203
Doors ............................................. 203
Engine oil level ............................... 198
Preglow .......................................... 201
Reserve fuel ................................... 200
Tire pressure monitor .................... 202
Water separator ............................. 202
Windshield washer fluid ................. 202
Warranty .............................................. 22
Washer fluid
Adding ........................................... 224
Capacities ...................................... 285
Display message ............................ 193
Indicator lamp ................................ 202
Notes ............................................. 284
Wiping with ...................................... 93
20Index
GWARNING
When the auxiliary heating is switched on,
parts of the vehicle can become very hot, e.g.
the exhaust system.
Flammable materials such as leaves, grass or
twigs may ignite if they come into contact
with:
Rhot parts of the exhaust system
Rthe exhaust gas itself
There is a risk of fire.
When the auxiliary heating is switched on,
make sure that:
Rno flammable materials come into contact
with hot vehicle components
Rthe exhaust gas can escape from the
exhaust pipe unhindered
Rthe exhaust gas does not come into contact
with flammable materials.
!Turn on the auxiliary heating at least once a
month for approximately 10 minutes. The
auxiliary heating could otherwise be dam-
aged.
!Make sure that the flow of hot air is not
blocked. The auxiliary heating will otherwise
overheat and switch off.
Your vehicle may be equipped with either an
auxiliary hot-water heater or an auxiliary warm-
air heater. Adjustment and operation of the:
Rhot-water auxiliary heater is done via the on-
board computer and with the auxiliary heating
button in the control panel (
Ypage 108) or
with the remote control (Ypage 109).
Rauxiliary warm-air heater is done via the timer
above the overhead control panel
(
Ypage 114).
The auxiliary heating works independently of the
engine and supplements the climate control
system in the vehicle. The auxiliary heating
heats the air in the vehicle interior to the tem-
perature set.
If your vehicle is equipped with a hot-water aux-
iliary heater, the auxiliary heating also keeps the
coolant warm. This way, the load on the engine
is minimized and fuel is saved.
The heater booster function (
Ypage 111) of the
au xiliary heating supports the climate control system when the engine is running and the out-
side temperature is low.
You can use the auxiliary heating at an outside
temperature of up to 39 ‡ (4 †). At an outside
temperature above 39 ‡ (4 †) the auxiliary
heating system and the heater booster function
switch off automatically.
Hot-water auxiliary heating
Heating time
The heating time when operating the auxiliary
heating with the vehicle is stationary without the
engine running depends on the outside temper-
ature and the electrical consumers switched on.
Outside
tempera-
tureHeating
timePossible startup
procedures
Above
23 ‡
(Ò5 †)Approx.
20 minutes6
23 ‡
(Ò5 †) to
5 ‡
(Ò15 †)Approx.
40 minutes3
Below 5 ‡
(Ò15 †)Approx.
50 minutes2
You can then switch on the auxiliary heating
again.
If you do not start the engine for a while, the total
duration of heating is limited to a maximum of
120 minutes to protect the starter battery.
Switching on the auxiliary heating is then auto-
matically disabled. You can, for example, switch
on the auxiliary heating without the engine run- ning if the outside temperature is Ò5‡( Ò20 †) a
maximum of two times. If you try it again, the
indicator lamps in the ybutton
(
Ypage 108) flash alternately for approximately
2 minutes to signal switch-on interlock. The aux-
iliary heating cannot be switched on without
starting the engine.
When the condition of charge of the starter bat-
tery is sufficient again, the switch-on interlock
will be deactivated. To charge the starter bat-
tery, let the engine run. The engine run time
required to reach the necessary condition of
charge depends on the outside temperature and
on the electrical consumers switched on.
Operating the auxiliary heating system107
Climate control
Z
Exceptionally, if the service brake fails, the park-
ing brake can be used to brake the vehicle in an
emergency.
XEmergency braking: press and hold release
button ;and carefully apply brake lever :.
Switching off the engine
GWARNING
The automatic transmission switches to neu-
tral position Nwhen you switch off the engine.
The vehicle may roll away. There is a risk of an
accident.
After switching off the engine, always switch
to parking position P. Prevent the parked vehi-
cle from rolling away by applying the parking
brake.
!If the coolant temperature is very high, e.g.
after driving on hilly roads, leave the engine
running at idle speed for about two minutes
before turning it off.
This allows the coolant temperature to return
to normal.
XStop the vehicle.
XShift the automatic transmission to position
P .
XApply the parking brake.
XTurn the key to position 0in the ignition lock
and remove it.
The immobilizer is activated.
XSecure the vehicle to prevent it from rolling
away (Ypage 130).
Wheel chock
Use the wheel chock or a similar object to pre-
vent the vehicle from rolling away, e.g. when
parking or changing a wheel.
Wheel chock in the load/passenger compartment
XTo remove the wheel chock on Cargo
Vans/Passenger Vans: pull restraining
cable :down a little and remove it from
retainer ;.
XRemove the chock.
iWhen stowing the wheel chock, make sure
that restraining cable :is holding it securely
in retainer ;.
Wheel chock to the rear of the chassis on the left
side of the vehicle (example)
XTo remove the wheel chock on Cab Chas-
sis:pull the locking springs down and remove
the wheel chock.
iWhen stowing the wheel chock, make sure
that it is secured in the retainer with the lock-
ing springs.
Parking the vehicle for a long period
If you park your vehicle for longer than
three weeks:
Rconnect the batteries to a trickle charger or
Rdisconnect the vehicle's starter battery or
132Parking
Driving an d parking
Most federal states and all Canadian provinces
require by law:
Rsafety chains between the towing vehicle andthe trailer. The chains should be cross-wound
under the trailer drawbar. They must be fas-
tened to the vehicle's trailer coupling, not to
the bumper or the axle.
Leave enough slack in the chains. This allows you to drive round tight corners.
Ra separate brake system for certain types of
trailer.
Ra safety shut-off for braked trailers. Find out
the specific requirements according to the
applicable laws.
If the trailer becomes detached from the tow-
ing vehicle, the safety feature applies the
trailer brakes.
Towing a trailer
There are numerous legal requirements con-
cerning the towing of a trailer, e.g. speed restric-tions. Make sure your vehicle/trailer combina-
tion complies with local laws. This not only
means where you live, but also anywhere you
are driving to. Information is available from the
police and local authorities.
Observe the following when towing a trailer:
RPractice driving around bends, stopping and
backing up at a place where there is no traffic.
This enables you to gain experience and get
used to the new handling characteristics.
RBefore driving, check:
-that the trailer tow hitch and ball coupling
are secure
-that the safety switch for a braked trailer is
functioning properly
-that the safety chains are secure and not
damaged
-that the electrical connections are secure
-that the lights are working
-that the wheels are in good order and the
tire pressure is correct
RAdjust the exterior mirrors to provide an
unobstructed view of the rear section of the
trailer.
RIf the trailer has electronically controlled
brakes, pull the vehicle/trailer combination
away carefully. Brake manually using the
brake controller and check that the brakes
are working.
RSecure the load on the trailer according to the
applicable specifications and current stand-
ards on securing loads (
Ypage 214).
RWhen driving with a trailer, check at regular
intervals that the load is secured and that the
brakes and lights are working.
RBear in mind that the handling will be less
stable when towing a trailer than when driving
without one. Avoid sudden steering move-
ments.
RThe vehicle/trailer combination is heavier,
accelerates more slowly and has a decreased
gradient climbing capability and a longer
braking distance.
It is more susceptible to crosswinds and
requires cautious steering.
RIf possible, do not brake suddenly, but rather
moderately at first so that the trailer can acti-
vate its brakes. Then increase the force on the
brake pedal.
RIf the automatic transmission repeatedly
shifts between gears when driving on inclines,
restrict the shift range. Select shift range 4,3,
2 or 1.
Driving in a low gear and at a low speed
reduces the risk of damaging the engine.
RWhen driving on a downhill gradient, shift to a
low gear and take advantage of the engine's
braking effect.
Avoid continuous brake application as this
may overheat the vehicle brakes and, if inst
al-
led, the trailer brakes.
RIf the coolant temperature increases dramat-
ically while the air-conditioning system is
switched on, switch off the air-conditioning
system.
Coolant heat can also be dissipated by
switching the airflow and the temperature of
the heater/air conditioning to the maximum
level. Open the windows if necessary.
RWhen overtaking, pay particular attention to
the extended length of your vehicle/trailer
combination.
Due to the length of your vehicle/trailer com- bination you need an additional distance
before you can return to your original lane.
158Towing a trailer
Driving and parking
Menu overview
Diagrams
This is what the displays look like when you scroll through the menus.
Generic terms
The illustration shows the menus on a vehicle
with Audio 15.
On Sound 5/Audio 20, the on-board computer
always shows the AUDIOandTEL (telephone)
menus in English. This is the case even if a dif-
ferent language is selected for the display.
Operation
:Operation menu (Ypage 166)
RStandard display
RCalling up the service due date
(Ypage 226)
RTire pressure monitor (Ypage 253)
RChecking the engine oil level
(Ypage 220)
;Audio menu (Ypage 167)
=Message memory menu (Ypage 176)
?Settings menu (Ypage 168)
ATrip computer menu (Ypage 174)
BTelephone menu (Ypage 175)
iThe generic terms in the tabular overview
should make orientation easier for you. How-
ever, they are not always shown on the dis-
play.
Operation menu
Overview
You can select the following functions in the
Operation menu by pressing the 9or:
button on the steering wheel:
RDisplaying the trip odometer and odometer
(standard display) (Ypage 167)
RDisplaying the coolant temperature
(Ypage 167)
RCalling up the service due date
(Ypage 226)
RTire pressure monitor (Ypage 253)
RChecking the oil level (Ypage 220)
166On-board computer (vehicles with steering wheel buttons)
On-board computer and displays
Display messagesPossible causes/consequences andMSolutions
å
IdleMod e
The yello w; CheckEngin eindicator lamp also lights up and three
short warning tone ssound.
You canno tdrive th evehicl eat aspeed exceedin g 5mph (8 km/h).
XAddat least 1. 5US gal (5.5l)of DEF (Ypage 129).
The display message and the yellow ;Check Engine indicator
lamp only disappear when the vehicle is stationary, at the latest
after 20 seconds as soon as you switch on the ignition or start the
engine after refueling.
Check DieselExhaust Fluid SeeOperator's Manual
In addition, the yellow ;DEF indicator lamp lights up and a warning
tone sounds.
The DEF reducing agent is contaminated, diluted or is not compliant
with ISO 22241.
XHave the DEF tank cleaned and refilled at a qualified specialist
workshop as soon as possible.
å
XX starts remaining
The yellow ;Check Engine indicator lamp also lights up and three
short warning tones sound.
After the message appears for the first time, the remaining DEF supply
will last for approximately 1200 miles (1900 km). The engine can then only be started another 16 times.
The number of remaining engine starts xx
(16to 0) is shown in the
message every time the engine is started.
The DEF reducing agent is contaminated, diluted or is not compliant
with ISO 22241.
The exhaust gas aftertreatment is malfunctioning or an emission rel-
evant malfunction has occurred. This malfunction or defect can dam-
age the exhaust gas aftertreatment.
XVisit a qualified specialist workshop immediately.
å
Idle Mode
The yellow ;DEF indicator lamp also lights up and three short
warning tones sound.
The vehicle cannot be driven at a speed exceeding 5 mph (8 km/h).
XVisit a qualified specialist workshop immediately.
?
Coolant Stop, turnengine off
The coolant temperature is too high.
If the vehicle is stopped after being subjected to extreme loads, the
coolant warning lamp may come on when the ignition is switched on
or the engine is restarted. Such loads can be, for example, driving in
mountainous terrain or driving with a trailer.
XRun the engine for approximately 1 minute at idling speed.
XConsult a qualified specialist workshop if the display message con-
tinues to be shown.
188Display messages
On-board computer and displays