Setting the unit (vehicles with
steering wheel buttons) ................. 169
Theft deterrent systems
Immobilizer ...................................... 56
Tow-away alarm ............................... 57
Tightening torques for wheel nuts/
wheel bolts ........................................ 271
Time
Setting the time (vehicles with
steering wheel buttons) ................. 171
Setting the time (vehicles without
steering wheel buttons) ................. 164
Timer
Activating ....................................... 115
Auxiliary heating ............................ 114
Important safety notes .................. 114
Overview ........................................ 114
Setting the heating level (auxiliary
heating) ......................................... 116
Setting the preselection time
(auxiliary heating) .......................... 115
Setting weekday, time and oper-
ating duration (auxiliary heating) ... 115
Switching immediate heating
mode on/off (auxiliary heating) ..... 115
Tire pressure
Calling up (on-board computer) ..... 253
Checking manually ........................ 253
Display messages (vehicles with
steering wheel buttons) ................. 191
Display messages (vehicles with-
out steering wheel buttons) ........... 178
Maximum ....................................... 252
Notes ............................................. 251
Recommended ............................... 250
Setting the unit (vehicles with
steering wheel buttons) ................. 170
Tire label ........................................ 251
Tire pressure loss warning system .. 255
Tire pressure monitor
Checking the tire pressure elec-
tronically ........................................ 254
Display message ............................ 191
Function/notes ............................. 253
Indicator lamp ................................ 202
Restarting ...................................... 255
Warning lamp ................................. 255
Tire pressure table ............................ 257 Tires
Aspect ratio (definition) ................. 265
Average weight of the vehicle
occupants (definition) .................... 264
Bar (definition) ............................... 264
Chang ing a w
heel .......................... 266
Characteristics .............................. 264
Checking ........................................ 248
Curb weight (definition) ................. 265
Definition of terms ......................... 264
Direction of rotation ...................... 267
Distribution of the vehicle occu-
pants (definition) ............................ 266
DOT (Department of Transporta-
tion) (definition) ............................. 264
DOT, Tire Identification Number
(TIN) ............................................... 263
GAWR (Gross Axle Weight Rating)
(definition) ..................................... 264
GTW (Gross Trailer Weight) (defi-
nition) ............................................ 264
GVW (Gross Vehicle Weight) (def-
inition) ........................................... 264
GVWR (Gross Vehicle Weight Rat-
ing) (definition) .............................. 265
Important safety notes .................. 247
Increased vehicle weight due to
optional equipment (definition) ...... 264
Kilopascal (kPa) (definition) ........... 265
Labeling (overview) ........................ 261
Load bearing index (definition) ...... 266
Load index ..................................... 263
Load index (definition) ................... 265
M+S tires ....................................... 249
Maximum load on a tire (defini-
tion) ............................................... 265
Maximum loaded vehicle weight
(definition) ..................................... 265
Maximum permissible tire pres-
sure (definition) ............................. 265
Maximum tire load ......................... 263
Maximum tire load (definition) ....... 265
Optional equipment weight (defi-
nition) ............................................ 265
PSI (pounds per square inch) (def- inition) ........................................... 265
Replacing ....................................... 266
Service life ..................................... 248
18Index
Sidewall (definition) ....................... 265
Snow chains .................................. 249
Speed rating (definition) ................ 264
Storing ........................................... 267
Structure and characteristics
(definition) ..................................... 264
Summer tires ................................. 249
TIN (Tire Identification Number)
(definition) ..................................... 265
Tire bead (definition) ...................... 265
Tire pressure (definition) ................ 265
Tire pressures (recommended) ...... 264
Tire size (data) ....................... 257, 272
Tire size designation, load-bearing
capacity, speed rating .................... 261
Tire tread ....................................... 248
Tire tread (definition) ..................... 265
Total load limit (definition) ............. 266
Traction (definition) ....................... 266
TWR (permissible trailer drawbar
noseweight) (definition) ................. 266
Uniform Tire Quality Grading
Standards (definition) .................... 264
Wear indicator (definition) ............. 266
Wheel rim (definition) .................... 264
Top Tether ............................................ 50
Touchshift (automatic transmis-
sion) .................................................... 125
Tow-away alarm
Arming/deactivating ........................ 57
Deactivating ..................................... 57
Operation ......................................... 57
Tow-starting
Emergency engine starting ............ 246
Important safety notes .................. 243
Towing
If the vehicle is stuck ..................... 245
Installing/removing the towing
eye ................................................. 244
With a raised front or rear axle ...... 245
Towing a trailer
Axle load, permissible .................... 287
Cleaning the trailer tow hitch ......... 237
Coupling up a trailer ...................... 157
Decoupling a trailer ....................... 159
Driving tips .................................... 155
Important safety notes .................. 155
Notes on retrofitting ...................... 286 Trailer loads ................................... 287
Tow ing aw
ay
Important safety guidelines ........... 243
In the event of malfunctions .......... 244
With both axles on the ground ....... 245
Trailer
Brake force booster malfunction ... 195
Trailer coupling
see Towing a trailer
Trailer loads and drawbar nose-
weights ............................................... 159
Trailer towing
Blind Spot Assist ............................ 146
PARKTRONIC ................................. 153
Permissible trailer loads and
drawbar noseweights ..................... 159
Transmission
see Automatic transmission
Transmission oil ................................ 282
Transport
Loading guidelines ......................... 212
Vehicle ........................................... 246
Transport by rail ................................ 135
Transportation
Rail ................................................ 135
Transporting
Load distribution ............................ 214
Securing a load .............................. 214
Trim pieces (cleaning instruc-
tions) .................................................. 238
Trip computer (on-board com-
puter) .................................................. 174
Trip meter
see Trip odometer
Trip odometer
Display (vehicles with steering
wheel buttons) ............................... 167
Display (vehicles without steering
wheel buttons) ............................... 163
Resetting ....................................... 162
see Trip computer (on-board computer)
Turn signals
Replacing bulbs (front) ..................... 88
Replacing bulbs (rear) ...................... 89
Switching on/off .............................. 81
Turn signals (Chassis Cab)
Replacing bulbs (rear) ...................... 90
Index19
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
Instrument cluster
Displays and controls
Instrumentcluste ron vehicles without steering whee lbuttons
Instrumen tcluste rin vehicles wit hsteering-wheel buttons
FunctionPag e
:Speedometer162
;Tachometer162
=f, gBrightens/dims th e
instrumen tcluste rlighting16 2
?Fue lgage wit hfuel filler flap
location indicator16 2
ADisplay
Vehicles without steering
whee lbuttons16 3
Vehicles wit hsteering whee l
buttons16 4
FunctionPag e
BReset butto n932
CMen ubutto n4
• changes standard display16 3
•select smenus16 4
DService butto nË
Checks th eengin eoil level22 0
32Instrument cluster
At a glance
FunctionPage
¦Fluid level too low in wind-
shield washer/headlamp
cleaning system
202
åDEF supply low or contami-
nated/diluted162
Exhaust gas aftertreatment
malfunction197
ÄIndicator lamp, distance
warning143
·Warning lamp, distance
warning143
ÃWarning and indicator lamps,
Lane Keeping Assist147
1Door or hood open203
Electrically operated step
malfunction203
#Brake pads/linings worn198
+LOW RANGE active148
KHigh-beam headlamps on
(vehicle with steering wheel
buttons)
81
JRight-hand turn signal81
:ASR malfunction53
BAS malfunction195
hESP®malfunction194
ÈDirt accumulation in air filter201
6Reserve fuel162
Fuel filler cap open200
FunctionPage
:Water in the fuel202
mFuel filter dirty202
#Battery charging malfunction198
bBulb defective203
=Tachometer with warning
and indicator lamps
cParking brake applied136
LLow-beam headlamps on79
KWorking speed governor
(ADR) on154
ÐPower steering assistance
malfunction203
KHigh-beam headlamps on
(vehicle without steering
wheel buttons)
81
åDEF supply low or contami-
nated/diluted162
Exhaust gas aftertreatment
malfunction197
|Reserve fuel200
Fuel filler cap open200
\Diesel particle filter malfunc-
tion201
hESP®malfunction194
7Fasten seat belts203
iCorresponding messages may also be
shown in the display (Ypage 176).
34Instrument cluster
At a glance
Steering wheel buttons
FunctionPage
:Display164
On-board computer opera-
tion
;Selects a submenu or adjusts
the volume164
WUp/increases the vol-
ume
X Down/reduces the vol-
ume
Using the telephone175
6 Accepts a call/starts
dialing
~ Ends a call/rejects an
incoming call
=Scrolls from one menu to
another164
V Forwards
UBack
Scrolls within a menu164
9Forwards
:Back
Center console
FunctionPage
:Stowage compartment205
;Audio 10 or Audio 15 (see the
separate operating instruc-
tions)
=Air-conditioning control
panel97
Paper holder1207
?Center console control
panel
cSwitches the left/right-hand
seat heating on/off76
zSwitches the windshield
heating on/off104
|Switches the rear window
defroster on/off104
fActivates/deactivates
PARKTRONIC153
£Switches the hazard warning
lamps on/off82
1Only on vehicles without rear-compartment climate control.
Center console35
At a glance
please consult a qualified specialist workshop
in advance. You could otherwise damage the
drive train or the brake system.
If you activate or deactivate the all-wheel drive
in a vehicle with this option, ESP
®will be deac-
tivated for the duration of the activation/deac-
tivation process.
If ESP
®is malfunctioning, the hindicator
lamp lights up while the engine is running and
the engine power may be reduced
(
Ypage 194).
iOnly use wheels with the recommended tire
sizes. Only then will ESP®function properly.
4ETS (Electronic Traction System)
!A function or performance test should only
be carried out on a two-axle dynamometer.
Before you operate the vehicle on such a
dynamometer, please consult a qualified
workshop. You could otherwise damage the
drive train or the brake system.
4ETS is only active when all-wheel drive is acti-
vated (
Ypage 148).
4ETS ensures permanent drive for all four
wheels, and together with ESP
®it improves the
vehicle's traction.
If a driven wheel spins due to lack of traction:
RWhen pulling away, make use of the traction
control integrated in ESP®. Depress the
accelerator pedal as far as necessary.
RWhile driving, slowly take your foot off the
accelerator pedal.
In wintry driving conditions, always use winter
tires (M+S tires) and if necessary, snow chains
(
Ypage 249). This is the only way to get the full
benefit from the all-wheel drive system.
Crosswind Assist
Crosswind Assist does not work if ESP®is deac-
tivated or disabled because of a malfunction.
Crosswind Assist does not react:
Rin the event of severe jolts and vibrations, e.g.
as a result of uneven surfaces or potholes
Rif the vehicle loses traction, e.g. on snow or
ice or when aquaplaning
Rto large and sudden steering movements by
the driver Crosswind Assist is operational again as soon as
the driving conditions return to normal.
Crosswind Assist detects strong crosswind
gusts that can impair the road holding of your
vehicle when driving straight ahead. Crosswind
Assist intervenes depending on the direction
and strength of the crosswind.
A stabilizing brake application helps you to keep
the vehicle on track.
Information appears in the instrument cluster In the event that Crosswind Assist intervenes
noticeably.
On vehicles without steering wheel buttons:
the d indicator lamp in the instrument clus-
ter flashes.
On vehicles with steering wheel buttons: the
d indicator lamp in the instrument cluster
flashes and the message Crosswind Assist
Activeappears in the multifunction display.
Crosswind Assist is active above a vehicle speed
of 50 mph (80 km/h) when the vehicle is driving
straight ahead or cornering gently.
Emergency exit
Emergency exit window
GWARNING
The emergency exit window cannot be locked in place. You risk injury if you exit the vehicle
through the emergency exit window.
RMake sure that nobody becomes trapped,
both when closing and when opening the
emergency exit window.
RThe opened emergency exit window must
be held in place by another person.
Pay attention to traffic conditions.
GWARNING
If the emergency exit window is unlocked
while driving, it could open and slam shut and consequently fall down. There is a risk of an
accident and injury.
Before starting off, make sure that the emer-
gency exit window is locked and the locking
pins are undamaged.
!Make sure there is sufficient clearance
when opening the emergency exit window.
Emergency exit55
Safety
Z
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 possi-
ble. Note that your vehicle may not be equipped
with all of the described functions. This also
applies to systems and functions relevant to
safety.
Read the information on qualified specialist
workshops (
Ypage 26).
Exterior lighting
Important safety notes
For reasons of safety, we recommend that you
drive with the lights switched on even during the
daytime. There may be differences in operation
due to legal requirements and voluntary recom-
mendations in some countries.
Bulb failure indicator
The bulb failure indicator is only an aid. You are
responsible for the proper functioning of the
vehicle lighting. Insufficient or non-functioning
vehicle lighting puts the operating safety of the
vehicle at risk.
For this reason, check the condition and func-
tion of your vehicle's lighting system and, if nec-
essary, that of the trailer before each journey.
The bulb failure indicator monitors all of the
exterior lighting lamps, except the perimeter
lamp and the trailer lighting. If a bulb fails, either
the b(
Ypage 33) indicator lamp lights up, or
you will see a corresponding message in the
display (
Ypage 185).
iDepending on the equipment, the bulb fail-
ure indicator can fail for all lamps with the
exception of the turn signal lamps.
Light switch
Operation
1 ÃAutomatic headlamp mode/daytime
running lamps
2$Lights off
3TParking lamps, license plate and
instrument lighting
4LLow-beam/high-beam headlamps
5NFog lamps
6RRear fog lamp
If you hear a warning tone when you leave the
vehicle, the lights may still be switched on.
XTurn the light switch to $orÃ.
or
XIf the rear fog lamp is switched on: press the
light switch in to the stop.
The turn signals, high-beam headlamps and the
high-beam flasher are operated using the com-
bination switch (
Ypage 81).
Low-beam headlamps
XTo switch on: turn the key to position 2in the
ignition lock or start the engine.
XTurn the light switch to position L.
The L indicator lamp in the instrument
cluster lights up.
Daytime running lamps
You can activate/deactivate the daytime run-
ning lamps function using the on-board com-
puter.
This is not possible in countries where daytime
running lamps are a legal requirement.
Exterior lighting79
Lights and windshield wipers