Trailer
Brake force booster malfunction ... 219
Trailer coupling
see Towing a trailer
Trailer loads and drawbar nose-
weights .............................................. .177
Trailer towing
Blind Spot Assist ............................ 165
PARKTRONIC ................................. 170
Permissible trailer loads and
drawbar noseweights ..................... 177
Transmission
see Automatic transmission
Transmission oil ................................ 324
Transport
Loading guidelines ......................... 240
Vehicle .......................................... .280
Transport by rail ................................ 154
Transportation
Rail ................................................ 154
Transporting
Load distribution ............................ 242
Securing a load .............................. 242
Trim pieces (cleaning instruc-
tions) ................................................. .270
Trip computer (on-board com-
puter) ................................................. .195
Trip meter
see Trip odometer
Trip odometer
Display (vehicles with steering
wheel buttons) ............................... 187
Display (vehicles without steeringwheel buttons) ............................... 182
Resetting ....................................... 181
see Trip computer (on-board computer)
Turn signals
Replacing bulbs (front) ................... 102
Replacing bulbs (rear) .................... 103
Switching on/off .............................. 94
Turn signals (Chassis Cab)
Replacing bulbs (rear) .................... 104
Twin co-driver's seat
Folding table .................................. 234
Stowage compartment .................. 232
Two-way radios
Type approval/frequency .............. 316 TWR (Tongue Weight Rating) (defi-
nition)
................................................. 305 U
Unlocking From inside the vehicle (central
unlocking button) ............................ .71
USB port .............................................2 38 V
Vehicle Data acquisition ............................... 29
Display message ............................ 216
Electronics ..................................... 316
Equipment ....................................... 22
Individual settings (vehicles with
steering wheel buttons) ................. 188
Limited Warranty ............................ .22
Loading .......................................... 295
Locking (SmartKey) .......................... 66
Lowering ........................................ 310
Maintenance .................................... 28
Parking for a long period ................ 151
Pulling away ................................... 140
Raising ........................................... 307
Registration ............................... 25, 28
Reporting problems ......................... 28
Securing from rolling away ............ 149
Towing away .................................. 277
Transporting .................................. 280
Unlocking (SmartKey )...................... 66
Vehicle battery
see Battery (vehicle)
Vehicle bodies
Body/equipment mounting direc-
tives for trucks ................................. 26
Vehicle data ....................................... 327
Vehicle identification number .......... 316
Vehicle identification plate .............. 316
Vehicle tool kit .................................. 274
Vents
see Air vents
Voltage supply
Fuses ............................................. 280 20
Index
W
Warning Stickers .......................................... .22
Warning and indicator lamps
Brakes .......................................... .219
Check Engine ................................. 224
Coolant .......................................... 223
Diesel Exhaust Fluid (DEF) ............. 221
Electrical step ................................ 227
ESP ®
.............................................. 218
ESP ®
function ................................ 221
Overview .......................................... 35
Seat belt ........................................ 227
Warning lamp ................................... .275
Warning triangle ................................ 275
Warning- and indicator lamps
ABS ................................................ 218
Air filter .......................................... 225
ASR ................................................ 218
BAS ................................................ 218
Battery charge ............................... 222
Brake wear ................................... .222
Bulbs .............................................. 227
Doors ............................................. 227
Engine oil level ............................... 222
Preglow .......................................... 225
Reserve fuel ................................... 224
Tire pressure monitor .................... 226
Water separator ............................ .226
Windshield washer fluid ................. 226
Washer fluid
Adding .......................................... .255
Capacities ...................................... 327
Display message ............................ 217
Indicator lamp ................................ 226
Notes ............................................. 326
Wiping with ................................... .107
Wheels
Changing a wheel .......................... 305
Checking ........................................ 285
Cleaning ......................................... 267
Important safety notes .................. 284
Installing the adapter (spare
wheel) ............................................ 309
Interchanging/changing ................ 305
Mounting a new wheel ................... 309
Mounting a wheel .......................... 306 Removing a wheel .......................... 309
Removing and mounting the spare
wheel ............................................. 313
Snow chains .................................. 287
Storing .......................................... .306
Tightening torque ........................... 310
Wheel size/tire size ....................... 311
Window curtain air bag ....................... 49
Windows
see Side windows
Windshield
Defrosting ...................................... 118
Windshield heating
Problem (malfunction) ................... 119
Switching on/off ........................... 119
Windshield washer fluid
Adding .......................................... .255
Indicator lamp ................................ 226
Windshield wipers
Problem (malfunction) ................... 109
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) ........................... 193
Switching on/off ........................... 107
Wiping with windshield washer
fluid ............................................... 107
Winter diesel ..................................... 319
Winter driving
Slippery road surfaces ................... 156
Snow chains .................................. 287
Winter operation
General notes ................................ 286
Radiator cover ................................. 27
Winter tires
M+S tires ....................................... 286
Setting a limit speed ..................... .153
Wiper blades
Cleaning ......................................... 268
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 181
0044
Tachometer 181
0087
0074,
0075Brightens/dims the
instrument cluster lighting 181
0085
Fuel gage with fuel filler flap
location indicator 181
0083
Display
Vehicles without steering
wheel buttons
182
Vehicles with steering
wheel buttons 184 Function Page
0084
Reset button
0045 34
006B
Menu button
0079 • changes standard display 182
• selects menus 183
006C
Service button
0098 Checks the engine oil level 25034
Instrument clusterAt a glance
Function Page
00B1
Fluid level too low in wind-
shield washer/headlamp
cleaning system
226
00E2
DEF supply low or contami-
nated/thinned 182
Exhaust gas aftertreatment
malfunction 221
00C7
Warning and indicator
lamps, distance warning
system
162
00B0
Warning and indicator
lamps, Lane Keeping Assist
166
003E
Door or hood open 227
Electrically operated step
malfunction 227
0026
Brake pads/linings worn 222
0057
High-beam headlamps on
(vehicle with steering wheel
buttons) 94
004D
Right-hand turn signal 94
003D
ASR malfunction 58
BAS malfunction 218
0089
ESP
®
malfunction 218 Function Page
009F
Dirt accumulation in air fil-
ter
225
00B4
Reserve fuel 181
Fuel filler cap open 224
00B8
Water in the fuel 226
003D
Battery charging malfunc-
tion
222
0049
Bulb defective 227
0087 Tachometer with warn-
ing and indicator lamps 0066
Parking brake applied 155
0058
Low-beam headlamps on 92
004E
Working speed governor
(ADR) on
172
0057
High-beam headlamps on
(vehicle without steering
wheel buttons) 94
0077
Reserve fuel 224
Fuel filler cap open 224
0089
ESP
®
malfunction 218
0076
Fasten seat belts 227
i
Corresponding messages may also be
shown in the display (Y page 197).36
Instrument clusterAt a glance
Steering wheel buttons
Function Page
0043
Display 184
On-board computer oper-
ation 0044
Selects a submenu or
adjusts the volume
184
0081
Up/increases the vol-
ume 0082
Down/reduces the
volume Using the telephone 196
0061
Accepts a call/starts
dialing 0076
Ends a call/rejects an
incoming call 0087
Scrolls from one menu to
another
184
0080
Forwards 007F
Back Scrolls within a menu 184
0063
Forwards 0064
Back Center console
Function Page
0043
Stowage compartment 231
0044
Audio 10 or Audio 15 (see
the separate operating
instructions)
0087
Air-conditioning control
panel
112
Paper holder
1 233
0085 Center console control
panel
0072
Switches the left/right-
hand seat heating on/off
87
0085
Switches the windshield
heating on/off
119
0071
Switches the rear window
defroster on/off
119
0069
Activates/deactivates
PARKTRONIC
169
1
Only on vehicles without rear-compartment climate control. Center console
37At a glance
Crosswind Assist does not react:
R in the event of severe jolts and vibrations,
e.g. as a result of uneven surfaces or pot-
holes
R if the vehicle loses traction, e.g. on snow or
ice or when aquaplaning
R to 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. Cross-
wind 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 but-
tons: the0072 indicator lamp in the instru-
ment cluster flashes.
On vehicles with steering wheel buttons:
the 0072 indicator lamp in the instrument
cluster flashes and the message Crosswind
Crosswind
Assist Active Assist Active appears 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
G
WARNING
The emergency exit window cannot be locked in place. You risk injury if you exit the vehicle
through the emergency exit window.
R Make sure that nobody becomes trapped,
both when closing and when opening the
emergency exit window.
R The opened emergency exit window must
be held in place by another person. Pay attention to traffic conditions.
G
WARNING
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. Hold the open window in position. You
could otherwise damage the emergency
exit window. The emergency exit window is intended for
use in an emergency only and must not be
opened unless the vehicle is stationary. The
emergency exit window is the first window
behind the driver's seat on the driver's side. It
is marked by the "Emergency Exit" label.
X To open: position both handles 0043verti-
cally. This will break locking pins 0044.
The window is unlocked.
X Swing the window outward by the handles
and hold it in this position. Make sure there
is sufficient clearance when doing so.
X To close: close the window. 60
Emergency exitSafety
In order to reduce risks:
R draw the passengers' attention to the elec-
trical step. Wait until the electrical step is
fully extended.
R do not jump out of the vehicle.
R only use the grab handle and step. Only
they are designed for such a load.
R keep grab handles, access steps and entry
sills free from dirt, e.g. mud, clay, snow and ice. Operation and obstacle detection
Electrical step
The sliding door of your vehicle can be equip- ped with an electrical step.
X When getting in and out of the vehicle, use
the grab handles and electrical step 0043.
Electrical step 0043automatically extends
when the sliding door is opened and retracts
when it is closed.
Electrical step 0043is equipped with an
obstruction detection device on the front
side. If the step comes into contact with an
obstacle while it is extending, it stops.
After you have removed the obstacle, you
must first close the sliding door and open it
once again so that the step can extend com-
pletely.
i If the electrical step obstructs loading,
you can prevent the step from extending
when opening the sliding door via obstacle
detection. The electrical step can then
remain retracted and a forklift or other lift- ing equipment can be moved nearer to the
cargo compartment.
Vehicles without steering-wheel buttons:
if the 003E indicator lamp in the instrument
cluster lights up and a warning tone sounds,
electrical step 0043is malfunctioning
(Y page 227).
Vehicles with steering wheel buttons: if
the Electrical Step
Electrical Step message is shown in
the display and a warning tone sounds, elec-
trical step 0043is malfunctioning (Y page 216).
If electrical step 0043is malfunctioning, the
step may only partially extend/retract or may not extend/retract at all. If a malfunction
does occur, you will have to retract and lock
electrical step 0043manually before continuing
the journey (Y page 74).
Before passengers get out of the vehicle, let
them know that electrical step 0043might not
be extended. Emergency release
! Driving with the step extended may result
in it being damaged.
If the electrical step does not retract auto-
matically, you will have to push it in and
lock it into place manually before continu-
ing your journey. X
Pull R-clips 0044on both rods 0043on the
underside of the step out of their respective
pins.
X Remove washers 0087and detach both
rods 0043. 74
Electrical stepOpening and closing
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 functions.
This also applies to systems and functions
relevant to safety.
Read the information on qualified specialist
workshops (Y page 25). 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 recommendations in some coun-
tries. 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-func-
tioning 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
necessary, that of the trailer before each jour- ney.
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 0049(Ypage 35) indicator lamp
lights up, or you will see a corresponding
message in the display (Y page 208).
i Depending on the equipment, the bulb
failure indicator can fail for all lamps with
the exception of the turn signal lamps. Light switch
Operation 0047
0058
Automatic headlamp mode/
daytime running lamps
0048 003F
Lights off
0049 0060
Parking lamps, license plate and
instrument lighting
004A 0058
Low-beam/high-beam headlamps
004B 005A
Fog lamps
004C 005E
Rear fog lamp
If you hear a warning tone when you leave the
vehicle, the lights may still be switched on.
X Turn the light switch to 003For0058.
or
X If 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 combination switch (Y page 94).
Low-beam headlamps X
To switch on: turn the key to position 2in
the ignition lock or start the engine.
X Turn the light switch to position 0058.
The 0058 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. 92
Exterior lightingLights and windshield wipers