
Overview ........................................124
Problem (malfunction) ................... 127
Releasing the parking lock man-
ually ............................................... 127
Selector lever ................................ 124
Selector lever positions ................. 124
Shift ranges ................................... 125
Starting the engine ........................ 120
Touchshift ...................................... 125
Trailer towing ................................. 126
Transmission oil change ................ 282
Automatic transmission emer-
gency mode ....................................... 127
AUX port ............................................. 211
Auxiliary heater
see Auxiliary warm-air heater
see Hot-water auxiliary heater
Auxiliary heating
Activating/deactivating heater
booster mode ................................ 111
Adjusting ....................................... 173
Conditions for switching on ........... 108
Heating time .................................. 107
Important safety notes .................. 106
Operating with the button (control
panel) ............................................ 108
Operation with the remote con-
trol ................................................. 109
Operation with the timer ................ 114
Selecting a switch-on time ............. 108
Setting the switch-on time ............. 109
see Auxiliary heating
see Auxiliary warm-air heater
see Hot-water auxiliary heater
Auxiliary warm-air heater
Problem (malfunction) ................... 117
Axle load, permissible (trailer tow-
ing) ...................................................... 287
B
Backup lamps
Replacing bulbs ............................... 89
Backup lamps (Chassis Cab)
Replacing bulbs ............................... 90
BAS (Brake Assist System)
Display message ............................ 182
Function/notes ................................ 54 Indicator lamp ................................ 195
Basic settings
see Settings
Battery
Isolating switch .............................. 118
Replacing (SmartKey) ......................6 1
Battery (SmartKey)
Checking .......................................... 61
Important safety notes .................... 61
Replacing ......................................... 61
Battery (vehicle)
Care ............................................... 232
Charge indicator lamp ................... 198
Charging ........................................ 232
Disconnecting and connecting ....... 229
Disconnecting and connecting
(engine compartment) ................... 231
Display message ............................ 192
Important safety notes .................. 227
Installing/removing (engine com-
partment) ....................................... 231
Jump starting ................................. 242
Location ......................................... 228
Removing and installing ................. 230
Removing and installing the floor
covering ......................................... 228
Before driving off
Important safety notes .................. 120
Belt
see Seat belts
Bleeding the fuel system .................. 123
Blind Spot Assist
Activating/deactivating ......... 146, 173
Notes/function .............................. 144
Trailer towing ................................. 146
Bottle holder
see Cup holder
Brake Assist
see BAS (Brake Assist System)
Brake Assist System
see BAS (Brake Assist System)
Brake fluid
Checking the level ......................... 223
Display message ............................ 183
Notes ............................................. 283
Warning lamp ................................. 195
4Index

G
GasolineReserve fuel warning lamp ............. 200
General driving tips
Driving short distances .................. 134
Genuine parts ...................................... 28
Glove box ........................................... 204
GTW (Gross Trailer Weight) (defini-
tion) .................................................... 264
H
Handbrake
see Parking brake
Hazard warning lamps ........................ 82
Head restraints
Adjusting .........................................7 6
Adjusting (rear) ................................ 76
Headlamps
Adding fluid to cleaning system ..... 224
Cleaning system (function) .............. 82
Fogging up ....................................... 83
see Automatic headlamp mode
Headliner (cleaning instructions) .... 238
Heating
see Climate control
High-beam headlamps
Highbeam Assist .............................. 83
Replacing bulbs ............................... 87
Switching on/off .............................. 81
Highbeam Assist
Function/notes ................................ 83
Switching Highbeam Assist on/
off .................................................. 171
Hood
Closing ........................................... 219
Display message ............................ 192
Important safety notes .................. 218
Indicator lamp ................................ 203
Opening ......................................... 218
Hot-water auxiliary heater
Problem (malfunction) ................... 113
Hydroplaning ..................................... 136
I
Ignition lock
see Key positions Immobilizer
.......................................... 56
Indicator lamp
see Warning and indicator lamps
Indicators
see Turn signals
Insect protection on the radiator ...... 28
Installing a wheel
Installing the adapter (spare
wheel) ............................................ 269
Instrument cluster
Fuel gage ....................................... 162
Important safety notes .................. 161
Instrument cluster lighting ............. 162
Outside temperature display .......... 162
Overview .......................................... 32
Speedometer ................................. 162
Tachometer ................................... 162
Warning and indicator lamps ........... 33
Instrument cluster lighting .............. 162
Instrument lighting
see Instrument cluster lighting
Interior lighting ................................... 84
Front ................................................ 84
Motion detectors ............................. 85
Notes on replacing bulbs ................. 92
Overview .......................................... 84
Replacing bulbs ............................... 92
Switching the rear compartment
lighting on centrally ......................... 84
Interior motion sensor
Arming ............................................. 57
Deactivating ..................................... 58
Function ........................................... 57
Switching off .................................... 57
J
JackJacking points ................................ 268
Preparation .................................... 268
Storage location ............................ 240
Using ............................................. 268
Jump-starting ..................................... 242
K
Key
Position in the ignition lock ............ 119
Index11

Removing/mounting ...................... 273
Specia lsea tbelt retractor .................. 48
Specialist worksho p............................ 26
Speed ,controlling
see Cruis econtrol
Speedomete r
Digital (vehicles wit hsteerin g
whee lbuttons ).............................. .170
Digital (vehicles without steering
wheel buttons) ............................... 163
Selecting display unit (vehicles
with steering- wheel buttons) ........1 70
see Instrument cluster
Standing lamps
Replacing bulbs ............................... 87
Replacing bulbs (rear) ......................8 9
Standing lamps (Chassis Cab)
Replacing bulbs (rear) ......................9 0
Start-off assist
Display message ............................1 82
Starting (engine) ................................ 120
Station
see Radio
Steering wheel
Adjusting ......................................... 77
Button overview ............................... 35
Cleaning ......................................... 238
Step
see Electrical step
Stickers
General safety notes ........................ 24
Stowage spaces
see Stowage spaces and stowage
compartments
Stowage spaces and stowage com-
partments
Eyeglasses compartment ...............2 05
Glove box ....................................... 204
Important safety notes .................. 204
Paper holder .................................. 207
Stowage compartment above the
windshield ..................................... 206
Stowage compartment in the cen-
ter console ..................................... 206
Stowage compartment in the
dashboard ...................................... 205
Stowage space above the head-
liner ............................................... 206 Stowage space u
nder the rear
bench seat ..................................... 207
Stowage space under the twin co-
driver's seat ................................... 206
Summer tires ..................................... 249
Switch unit
see Control panel
Switching off the alarm (ATA) ............ 56
Switching the heater booster func-
tion on/off ......................................... 111
Switching the surround lighting
on/off (on-board computer) ............. 172
Swivel seat ........................................... 73
T
Tachometer ........................................ 162
Tail lamps
Changing ......................................... 90
Replacing bulbs ............................... 89
see Lights
Tail lamps (Chassis Cab)
Replacing bulbs ............................... 90
Tank content
Fuel gauge ..................................... 162
Range (vehicles with steering
wheel buttons) ............................... 174
Reserve fuel warning lamp ............. 200
Technical data
Capacities ...................................... 277
Cargo tie-down points .................... 285
Cargo tie-down rings ...................... 285
Loading rails .................................. 285
Roof carrier .................................... 286
Tires/wheels ......................... 257, 272
Trailer tow hitch ............................. 286
Vehicle data ................................... 285
Telephone .................................. 210, 211
Telephone (on-board computer)
Accepting an incoming call ............ 175
Display messages .......................... 193
Numbers from the phone book ...... 175
Operating ....................................... 175
Redialing ........................................ 176
Rejecting or ending a call .............. 175
Temperature
Outside temperature ...................... 162
Setting (climate control) ................ 102
Index17

Cockpit
FunctionPage
:Door control panel37
;Light switch79
=Combination switch
• turn signals81
• high-beam headlamps81
• windshield wipers93
• rear window wiper94
?Cruise control lever140
ASteering wheel without or
with buttons35
BInstrument cluster32
CStowage compartment
• 3.5 mm audio jack211
• USB port211
DTimer for the auxiliary warm-
air heater (auxiliary heating)114
E• Stowage compartment
with interior light84
• Overhead control panel36
FRear-view mirror78
FunctionPage
GPARKTRONIC warning dis-
play151
HOpens/closes the right-hand
side window71
IStowage compartment (jack
and vehicle tool kit)240
JGlove box204
KCenter console35
LSelector lever (automatic
transmission)124
MIgnition lock119
NFurther control panels37
OSteering wheel buttons35
PEngages/releases the park-
ing brake136
QHorn
ROpens the hood218
SSteering wheel buttons35
Cockpit31
At a glance

Door controlpanel
FunctionPage
:Adjust sth eexterio rmirrors78
;Selects an exterio rmirro r78
=Opens/closes th eleft-han d
sid ewindow71
?Opens/closes th eright-hand
sid ewindow71
Further contro lpanels
Contro lpanel between th eligh t
switch an dth esteering wheel
FunctionPage
ySwitches th eauxiliar yheat -
in g on/off10 8
±Switches th eheater booster
function on/off11 1
E
FSets th eworking speed15 4
ESwitches th eworking speed
governor (ADR) on/off15 4
´
·Ventilates th ecargo com-
partmen t117
Further control panels37
At a glance

Window heating
Windshield heater
Windshield heater switch
The windshield heater consumes a lot of power.
You should therefore switch it off as soon as the
windshield is clear. The windshield heating oth-
erwise switches off automatically after
5 minutes.
XStart the engine.
XTo switch on/off: press thezswitch.
The indicator lamp in the zbutton comes
on when the windshield heating is switched
on.
If the indicator lamp in the zwindshield
heating button flashes, the on-board voltage is
too low. The windshield heating has switched off
prematurely or cannot be activated.
XSwitch off any consumers that are not
required, e.g. reading lamps or interior light-
ing.
If enough on-board voltage is available again
within 30 seconds, the windshield heating auto- matically switches on again. It otherwise
remains switched off.
Rear window defroster
Rear window defroster switch
The rear window defroster consumes a lot of
power. You should therefore switch it off as
soon as the window is clear. The rear window
heating otherwise only switches off automati-
cally after 12 minutes.
XStart the engine.
XTo activate and deactivate: press the|
button.
The indicator lamp in the |button comes
on when the rear window defroster is
switched on.
If the indicator lamp in the |rear window
defroster button flashes, the on-board voltage is
too low. The rear window defroster has switched off prematurely or cannot be activated.
XSwitch off any consumers that are not
required, e.g. reading lamps or interior light-
ing.
If enough on-board voltage is available again
within 30 seconds, the rear window heating
automatically switches on again. It otherwise
remains switched off.
Switching air-recirculation mode
on/off
Important safety notes
When you switch on air-recirculation mode, the windows could fog up more quickly, in particular
at low outside temperatures. Only switch on air-
recirculation mode for a short time.
You can deactivate the intake of fresh air if
unpleasant odors enter the vehicle from out-
side. The air inside the vehicle will only be cir-
culated.
104Operating the climate control system
Climate control

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

Outside tempera-
tureEngine runtime
Above 32 ‡ (0 †)at least 10 minutes
32 ‡ (0 †) to 14 ‡
(Ò10 †)at least 15 minutes
Below 14 ‡ (Ò10 †)at least 20 minutes
Before switching on
XCheck the fuel level and top up if necessary.
The auxiliary heating is operated directly
using the vehicle's fuel. The tank must be at
least a quarter full to ensure that the auxiliary
heating functions.
XSwitch on climate control (Ypage 101).
XSet the temperature control to the desired
temperature (Ypage 102).
XSet the air distribution as required
(Ypage 102).
XOpen the center (Ypage 105) and side air
vents (Ypage 106) and set them to the middle
position.
iThe auxiliary heating automatically switches
to heater booster mode after the engine is
started.
Operating with the button (control
panel)
iSwitch the heater booster function on or off
with the ¢button (Ypage 111).
XTo activate the auxiliary heating system:
press and hold the upper section of the y
switch for longer than 2 seconds.
The red indicator lamp in the button lights up.
The auxiliary heating heats or ventilates the interior to the temperature that you have set.
The blower switches to the first level.
XTo deactivate the auxiliary heating:
press
the upper section of the yswitch.
or
XTurn the key in the ignition lock to position 0.
The red indicator lamp in the button goes out.
The auxiliary heating operates for another
2 minutes and then switches off automati-
cally.
Selecting a switch-on time
Important information
You can use the on-board computer to define up
to three switch-on times, one of which can be
selected.
The yellow indicator lamp in the ybutton
goes out after 30 minutes, if you:
Rhave selected the switch-on time and
Rturn the key to position 0in the ignition lock
On-board computer without steering
wheel buttons
XTurn the key to position 2in the ignition lock.
XPress the ybutton.
The y symbol flashes in the display.
or
XPress the 4menu button on the instrument
cluster repeatedly until the ysymbol
flashes in the display.
XUse the forg buttons on the instrument
cluster to select the switch-on time 1to3.
The switch-on time selected is displayed.
XWait 10 seconds for the standard display to
appear.
The switch-on time is selected. The yellow
indicator lamp in the ybutton lights up.
If you do not preselect a switch-on time, and
--:--
is shown in the display, this means that
the automatic switch-on mode is switched
off. The yellow indicator lamp in the y
button goes out.
108Operating the auxiliary heating system
Climate control