
Adaptive Brake Assist .................... 140
ASR (Acceleration Skid Control) ...... 54
BAS (Brake Assist System) .............. 54
Distance warning function ............. 139
EBD (electronic brake force distri-
bution) ............................................. 55
ESP
®(Electronic Stability Pro-
gram) ............................................... 55
Important safety information ........... 53
Overview .......................................... 53
Driving systems
Blind Spot Assist ............................ 141
Cruise control ................................ 137
Display message ............................ 186
Lane Keeping Assist ...................... 143
PARKTRONIC ................................. 148
Driving tips
Automatic transmission ................. 123
Brakes ........................................... 132
Break-in period .............................. 116
Checking brake lining thickness .... 133
Downhill gradient ........................... 132
Drinking and driving ....................... 130
Driving abroad ............................... 131
Driving in winter ............................. 134
Driving on flooded roads ................ 134
Driving on wet roads ...................... 134
Exhaust check ............................... 131
Fuel ................................................ 130
General .......................................... 130
Hydroplaning ................................. 134
Icy road surfaces ........................... 134
Important safety notes .................. 116
Limited braking efficiency on sal-
ted roads ....................................... 133
New brake disks ............................ 133
New brake pads/linings ................ 133
Off-road driving .............................. 135
Overrun cut-off .............................. 130
Snow chains .................................. 246
Speed limitation ............................. 131
Towing a trailer .............................. 152
Transport by rail ............................. 132
Wet road surface ........................... 133
DSR (Downhill Speed Regulation) .... 146
E
EBD (electronic brake force distri-
bution)
Display message ............................ 180
Function/notes ................................ 55
Indicator lamps .............................. 191
Electrical closing assist ...................... 66
Electrical fuses
see Fuses
Electrical step
Cleaning ......................................... 233
Display message ............................ 189
Emergency release .......................... 66
Function ........................................... 66
Important safety notes .................... 66
Indicator lamp ................................ 199
Manual retraction ............................ 66
Obstacle detection ........................... 66
Electrical system
Battery main switch ....................... 116
Electronic brake force distribution
see EBD (electronic brake force
distribution)
Electronic Stability Program
see ESP
®(Electronic Stability Program)
Electronic Traction System
see 4ETS (Electronic Traction System)
Emergency exit .................................... 56
Emergency exit window ..................... 56
Emergency Tensioning Devices
Activation ......................................... 46
Emissions control
Service and warranty information .... 23
Engine
ADR (working speed governor) ...... 151
Changing the power output ............. 27
Check Engine warning lamp ........... 196
Cleaning instructions ..................... 230
Engine number ............................... 273
Engine speed setting (working
mode) ............................................ 152
Irregular running ............................ 120
Jump-starting ................................. 238
Operating safety .............................. 27
Starting .......................................... 118
Starting problems .......................... 120
Switching off .................................. 129
10Index

J
JackJacking points ................................ 263
Preparation .................................... 263
Storage location ............................2 36
Using ............................................. 263
Jump-starting ..................................... 238
K
Key
Position in the ignition lock ............ 117
Key positions ..................................... 117
Kickdown ...........................................1 23
L
Lamps
see Warning and indicator lamps
Lane Keeping Assist
Activating/deactivating ................. 144
Function/notes .............................1 43
Language
Display (vehicles with steering
wheel buttons) ............................... 167
Lashing points and tie downs
Permissible tensile load ................. 281
LATCH-type (ISOFIX) child seat
anchors ................................................ 50
License plate lamp
Replacing bulbs ............................... 91
License plate lamp (Chassis Cab)
Replacing bulbs ............................... 91
Light sensor ......................................... 81
Lighting
see Lights
Lights
Activating/deactivating daytime
running lamps (on-board com-
puter with steering wheel but-
tons) .............................................. 168
Activating/deactivating surround
lighting (vehicles with steering
wheel buttons) ............................... 169
Automatic headlamp mode .............. 81
Bulb failure indicator ........................ 80
Cornering light function ................... 83
Driving abroad ............................... 132 Fog lamps ........................................ 81
Hazard warning lamps ..................... 83
Headlamp range .............................. 82
High beam flasher ............................ 82
High-beam headlamps ..................... 82
Highbeam Assist .............................. 84
Important safety notes .................... 80
Light switch ..................................... 80
Low-beam headlamps ...................... 80
Parking lamps .................................. 80
Rear fog lamp .................................. 81
Setting the exterior lighting
delayed switch-off (vehicles with
steering wheel buttons) ................. 169
Switching the daytime running
lamps on/off (switch) ...................... 80
Turn signals ..................................... 82
see Changing a bulb
see Interior lighting
Limited Warranty ................................ 23
Load distribution ............................... 210
Load securing aids
Carrier systems ............................. 212
Loading gui deli
nes
Important safety notes .................. 208
Loading rails
Installing cargo tie-down rings ....... 212
Maximum tensile strength ............. 282
Loads
Securing ........................................ 210
Transporting .................................. 208
Locator lighting
Setting (vehicles with steering
wheel buttons) ............................... 169
Locking
see Central locking
Locking and unlocking manually ....... 63
Locking centrally
see Central locking
LOW RANGE ....................................... 145
LOW RANGE transmission ratio ....... 145
Low-beam headlamps
Display message ............................ 182
Driving abroad ............................... 132
Replacing bulbs ............................... 88
Switching on/off .............................. 80
Lumbar support ................................... 73
Index13

FunctionPage
¦Fluid level too low in wind-
shield washer/headlamp
cleaning system
198
åDEF supply low or contami-
nated/diluted159
Exhaust gas aftertreatment
malfunction193
ÄIndicator lamp, distance
warning140
·Warning lamp, distance
warning140
ÃWarning and indicator lamps,
Lane Keeping Assist144
1Door or hood open198
Electrically operated step
malfunction199
#Brake pads/linings worn194
+LOW RANGE active145
KHigh-beam headlamps on
(vehicle with steering wheel
buttons)
82
JRight-hand turn signal82
:ASR malfunction54
BAS malfunction191
hESP®malfunction190
ÈDirt accumulation in air filter197
6Reserve fuel159
Fuel filler cap open196
FunctionPage
:Water in the fuel198
mFuel filter dirty198
#Battery charging malfunction194
bBulb defective198
=Tachometer with warning
and indicator lamps
cParking brake applied133
LLow-beam headlamps on80
KWorking speed governor
(ADR) on151
ÐPower steering assistance
malfunction199
KHigh-beam headlamps on
(vehicle without steering
wheel buttons)
82
åDEF supply low or contami-
nated/diluted159
Exhaust gas aftertreatment
malfunction193
|Reserve fuel196
Fuel filler cap open196
hESP®malfunction190
7Fasten seat belts198
iCorresponding messages may also be
shown in the display (Ypage 173).
Instrument cluster35
At a glance

FunctionPage
àActivates/deactivates ASR54
Ã
ÄCentral locking, interior/rear
compartment63
æActivates/deactivates the
distance warning function140
jActivates/deactivates Lane
Keeping Assist144
kActivates/deactivates Blind
Spot Assist141
A• Stowage compartment or
• CD changer; see the sepa-
rate operating instructions,
or
BCup holder with:204
• Ashtray205
• Cigarette lighter205
C12 V socket206
Overhead control panel
FunctionPage
:Microphone for the mobile
phone206
;Switches the right-hand
reading lamp on/off85
=Switches the automatic inte-
rior lighting on/off85
?• Eyeglasses compartment
or201
• Anti-Theft Alarm system
(ATA)57
ASwitches the interior lighting
on/off85
BSwitches the left-hand read-
ing lamp on/off85
Overhead control panel37
At a glance

As a result, they could:
Ractivate vehicle equipment and become
trapped, for example
Ractivate or deactivate systems, thereby
endangering other road users
Unsecured animals could also be flung around
the vehicle in the event of an accident or sud-
den steering or braking, thereby injuring vehi- cle occupants. There is a risk of an accident
and injury.
Never leave animals unattended in the vehi-
cle. Always secure animals properly during
the journey, e.g. use a suitable animal trans-
port box.
Driving safety systems
Overview
In this section, you will find information about
the following driving safety systems:
RABS ( Anti-lock Braking System)
RASR (Acceleration SkidControl)
RBAS ( Brake Assist System)
REBD ( Electronic Brake Force Distribution)
RESP®(E lectronic StabilityProgram)
Important safety notes
If you fail to adapt your driving style or if you are
inattentive, the driving safety systems can nei-
ther reduce the risk of accident nor override the
laws of physics. Driving safety systems are
merely aids designed to assist driving. You are
responsible for the distance to the vehicle in
front, for vehicle speed, braking in good time
and for staying in your lane. Always adapt your
driving style to the prevailing road and weather
conditions and maintain a sufficient, safe dis-
tance from other road users. Drive carefully.
Please note that the driving safety systems
described only work optimally when:
Rthere is adequate contact between the tires
and the road surface
Ryou use winter tires (M+S tires), with snow
chains if necessary, when the road conditions
are wintry Pay particular attention to the information
regarding tires, tire tread and winter operation
under "Wheels and tires" (
Ypage 243).
ABS (Anti-lock Braking System)
Important safety notes
Observe the important safety guidelines for the
driving safety system (Ypage 53).
GWARNING
If ABS is faulty, the wheels could lock when
braking. The steerability and braking charac-
teristics may be severely impaired. Addition-
ally, further driving safety systems are deac-
tivated. There is an increased danger of skid-
ding and accidents.
Drive on carefully. Have ABS checked imme-
diately at a qualified specialist workshop.
If ABS is malfunctioning, other systems will also
fail, including driving safety systems. Observe
the information relating to the !warning
lamp (
Ypage 191).
ABS regulates brake pressure in such a way that
the wheels do not lock when you brake. This
allows you to continue steering the vehicle when
braking.
ABS works from a speed of about 5 mph
(8 km/h), regardless of road-surface conditions. ABS works on slippery surfaces, even when you
only brake gently.
The yellow !warning lamp in the instrument
cluster lights up when the ignition is switched
on. The lamp goes out when the engine starts
running.
Braking
If ABS intervenes when braking, you will feel a
pulsating in the brake pedal.
The pulsating brake pedal can be an indication
of hazardous road conditions and functions as a
reminder to take extra care while driving.
XIf ABS intervenes: continue to depress the
brake pedal with force until the braking sit-
uation is over.
XTo make a full brake application: depress
the brake pedal with full force.
Driving safety systems53
Safety
Z

20 mph (30 km/h). With the help of Adaptive
Brake Assist, the distance warning signal can
detect obstacles that are in the path of your
vehicle for an extended period of time.
When you approach an obstacle and adaptive
Brake Assist detects that there is a risk of a col-
lision, adaptive Brake Assist calculates the brak-ing force necessary to avoid a collision. Should
you apply the brakes forcefully, adaptive Brake
Assist will automatically increase the braking
force to the calculated level.
XKeep the brake pedal depressed until the
emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes function as usual again if:
Ryou release the brake pedal
Rthere is no longer any danger of a collision
Rno obstacle is detected in front of your vehicle
Adaptive Brake Assist is then deactivated.
Up to the maximum vehicle speed, adaptive
Brake Assist can react to moving obstacles that
have already been recognized as such at least
once over the period of observation. Adaptive
Brake Assist does not react to stationary obsta-
cles.
In particular, the detection of obstacles can be
impaired if:
Rdirt on the sensors or anything else covering
the sensors
Rsnow or heavy rain
Rinterference from other radar sources
Rthere are strong radar reflections, for exam-
ple in parking garages
Ra narrow vehicle traveling in front, e.g. a
motorbike
Ra vehicle traveling in front on a different line
If adaptive Brake Assist is not available due to a
malfunction in the radar sensor system, the full
brake boosting effect with the help of BAS
remains available.
Following damage to the front end of the vehicle,
have the configuration and operati
on of the
radar sensor checked at a qualified specialist
workshop. This also applies to collisions at slow
speeds where there is no visible damage to the
front of the vehicle.
Lane Tracking package
Blind Spot Assist
General notes
Blind Spot Assist monitors the areas on either
side of the vehicle that are not visible to the
driver with two lateral, rear-facing radar sensors
in the bumper. It supports you from speeds of
approximately 20 mph (30 km/h). A warning
display in the exterior mirrors draws your atten-
tion to vehicles detected in the monitored area. If you then switch on the corresponding turn
signal to change lane, you will also receive an
optical and audible collision warning.
Important safety notes
GWARNING
Blind Spot Assist does not react to:
Rvehicles overtaken too closely on the side,
placing them in the blind spot area
Rvehicles which approach with a large speed
differential and overtake your vehicle
As a result, Blind Spot Assist may not give
warnings in such situations. There is a risk of
an accident.
Always observe the traffic conditions care-
fully, and maintain a safe lateral distance.
Blind Spot Assist is only an aid. It may fail to
detect some vehicles and is no substitute for
attentive driving. Always ensure that there is
sufficient distance to the side for other road
users and obstacles.
iUSA only:
This device has been approved by the FCC as
a "Vehicular Radar System". The radar sensor
is intended for use in an automotive radar
system only. Removal, tampering, or altering
of the device will void any warranties, and is
not permitted by the FCC. Do not tamper with, alter, or use in any non-approved way.
Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.
Driving systems141
Driving and parking
Z

Monitoring range of the sensors
In particular, the detection of obstacles can be
impaired in the case of:
Rdirt on the sensors or anything else covering
the sensors
Rpoor visibility, e.g. due to fog, heavy rain or
snow
Rnarrow and short vehicles, e.g. motorcycles
or bicycles
Rvery wide lanes
Rnarrow lanes
Rvehicles not driving in the middle of their lane
Rbarriers or other road boundaries
Vehicles in the monitoring range are then not
indicated.
Blind Spot Assist monitors the area approx-
imately 10 ft (3.0 m) behind your vehicle and
approximately 1.6 ft (0.5 m) to 11.5 ft (3.5 m)
each side of it. The monitoring range behind the
vehicle may also be larger depending on the sit-
uation.
If the lanes are narrow, vehicles driving in the
lane beyond the lane next to your vehicle may be
indicated, especially if the vehicles are not driv-
ing in the middle of their lane. This may be the
case if the vehicles are driving on the inner side
of their lane. Due to the nature of the system:
Rwarnings may be issued in error when driving
close to crash barriers or similar solid lane
borders.
Rwarnings may be interrupted when driving
alongside particularly long vehicles, for exam-
ple trucks, for a prolonged time.
The two sensors for Blind Spot Assist are inte-
grated into the sides of the rear bumper. Make
sure that the bumper is free of dirt, ice or slush
in the vicinity of the sensors. The radar sensors
must not be covered, for example by rear-moun- ted cycle racks or overhanging loads. Following
a severe impact or in the event of damage to the
bumper, have the function of the radar sensors
checked at a qualified specialist workshop.
Blind Spot Assist may otherwise not work prop- erly.
Indicator and warning display
Blind Spot Assist is not active at speeds below
approximately 20 mph (30 km/h). Vehicles in
the monitoring range are then not indicated.
:Yellow indicator lamp and red warning lamp
If yellow indicator lamp :lights up:
Ryou are driving at less than 20 mph (30 km/h)
RBlind Spot Assist is deactivated
RBlind Spot Assist is malfunctioning
Blind Spot Assist is active from a speed of
20 mph (30 km/h). If a vehicle is detected in the
blind spot monitoring range, red warning
lamp :on the corresponding side lights up.
This warning occurs when a vehicle enters the
blind spot monitoring range from behind or from
the side. When you overtake a vehicle, the warn- ing only occurs if the difference in speed is less
than 14 mph (22 km/h).
Yellow indicator lamp :goes out if reverse gear
is engaged. Blind Spot Assist is then deactiva-
ted.
142Driving systems
Driving and parking

The brightness of the indicator/warning lamps
is adjusted automatically according to the
brightness of the ambient light.
Collision warning
If a vehicle is detected in the monitoring range of
Blind Spot Assist and you switch on the corre-
sponding turn signal, a double warning tone
sounds once. Red warning lamp:flashes. If
the turn signal remains on, detected vehicles
are indicated by the flashing of red warning
lamp :. There are no further warning tones.
Activating/deactivating Blind Spot Assist
iBlind Spot Assist is activated when you
switch on the ignition.
XTurn the SmartKey to position 2in the ignition
lock.
Warning lamps :in the exterior mirrors light
up red for approximately 1.5 seconds and
then turn yellow.
XTo deactivate: press thekbutton in the
center console (Ypage 36).
The yellow indicator lamp in exterior mirror :
first flashes and then lights up continuously.
XTo activate: press thekbutton in the
center console again (Ypage 36).
The yellow indicator lamp in exterior mirror :
flashes initially. If you exceed 20 mph
(30 km/h) while driving, the yellow indicator
lamp in exterior mirror :goes out.
Towing a trailer
If you attach a trailer, make sure that you have
correctly established the electrical connection.
This can be accomplished by checking the trailer
lighting. Blind Spot Assist is deactivated as a
result. The indicator lamp in the exterior mirrors
lights up yellow.
On vehicles with steering wheel buttons, the
Blind Spot Assist Deactivated
message
also appears in the display.
Lane Keeping Assist
General notes
Lane Keeping Assist monitors the area in front of
your vehicle by means of a camera at the top of
the windshield. Lane Keeping Assist detects
lane markings on the road and warns you before
you leave your lane unintentionally.
:Lane Keeping Assist camera
Lane Keeping Assist supports you from speeds
of approximately 40 mph(60 km/h).
If Lane Keeping Assist detects lane markings,
the à indicator lamp in the instrument clus-
ter lights up green. Lane Keeping Assist is opera-
tional.
Important safety notes
GWARNING
Lane Keeping Assist may not always clearly
recognize lane markings.
In this case, Lane Keeping Assist may:
Rgive an unnecessary warning
Rnot give a warning
There is a risk of an accident.
Always pay particular attention to the traffic
situation and stay in lane, in particular if
warned by Lane Keeping Assist.
GWARNING
The Lane Keeping Assist warning does not
return the vehicle to the original lane. There is
a risk of an accident.
You should always steer, brake or accelerate
yourself, in particular if warned by Lane Keep-
ing Assist.
If you fail to adapt your driving style, Lane Keep-
ing Assist can neither reduce the risk of accident
nor override the laws of physics. Lane Keeping
Assist cannot take into account road, weather or traffic conditions. Lane Keeping Assist is only an
aid. You are responsible for the distance to the
vehicle in front, for vehicle speed, braking in
good time and for staying in your lane.
Driving systems143
Driving and parking
Z