
Driving and operating133Driving and
operatingDriving hints ............................... 134
Control of the vehicle ...............134
Steering ................................... 134
Starting and operating ...............134
New vehicle running-in ............134
Ignition switch positions ...........134
Power button ........................... 135
Power saving mode .................136
Starting the engine ..................137
Overrun cut-off ........................ 138
Stop-start system ....................138
Parking .................................... 141
Engine exhaust .......................... 142
Exhaust filter ............................ 142
Catalytic converter ...................142
AdBlue ..................................... 143
Automatic transmission ..............146
Transmission display ...............146
Selector lever .......................... 146
Manual mode ........................... 147
Electronic driving programmes 148
Fault ........................................ 148
Interruption of power supply ....148Manual transmission ..................149
Brakes ........................................ 150
Antilock brake system .............150
Parking brake .......................... 150
Brake assist ............................. 152
Hill start assist ......................... 153
Ride control systems .................153
Electronic Stability Control and Traction Control system .........153
Selective ride control ...............154
Sport mode .............................. 156
Driver assistance systems .........156
Cruise control .......................... 156
Speed limiter ........................... 159
Adaptive cruise control ............161
Forward collision alert .............168
Active emergency braking .......169
Front pedestrian protection .....173
Parking assist .......................... 174
Advanced parking assist .........177
Side blind spot alert .................181
Panoramic view system ...........183
Rear view camera ...................186
Lane departure warning ..........187
Lane keep assist .....................188
Driver alert ............................... 190
Fuel ............................................ 192
Fuel for petrol engines .............192Fuel for diesel engines ............192
Refuelling ................................ 193
Trailer hitch ................................ 195
General information .................195
Driving characteristics and towing tips .............................. 195
Trailer towing ........................... 196
Towing equipment ...................196
Trailer stability assist ...............199

170Driving and operatingeither by manual braking or by
steering. Before the active
emergency braking applies, the driver
is warned by the forward collision
alert or the front pedestrian protection alert.
Forward collision alert 3 168
Front pedestrian protection 3 173
Active emergency braking can be
deactivated in the personalisation
menu 3 104. If deactivated, m
illuminates in the instrument cluster
and a warning message is displayed
in the Driver Information Centre.
The feature uses various inputs (e.g.
camera sensor, radar sensor, brake
pressure, vehicle speed) to calculate
the probability of a frontal collision.9 Warning
This system is not intended to
replace the driver responsibility for driving the vehicle and looking
ahead. Its function is limited to
supplemental use only to reduce
the vehicle speed before a
collision.
The system may not react to
animals. After a sudden lane
change, the system needs a
certain time to detect the next
preceding vehicle.
The driver must always be ready
to take action and apply the brakes and steer to avoid collisions.
Functionality
If equipped only with front camera the
active emergency braking operates in
forward gear above walking speed up
to 53 mph. With radar sensor and
front camera active emergency
braking operates in forward gear in
the range between walking speed
and 87 mph.
A precondition is that forward collision
alert with front camera system is not
deactivated in the vehicle
personalisation menu and the seat
belts of the front passengers are
fastened 3 104.
The system includes: ● brake preparation system
● emergency automatic braking
● forward looking brake assist
● intelligent brake assist (only with radar sensor)
● forward collision alert
● front pedestrian protection
Brake preparation system
When approaching a vehicle ahead
or a pedestrian so quickly that a
collision is likely, the brake
preparation system slightly
pressurises the brakes. This reduces
the response time, when a manual or automatic braking is requested.
Emergency automatic braking After activation of brake preparation
system and just before the imminent
collision, this function automatically
applies limited braking to reduce the
impact speed of the collision or
prohibit a crash. If active emergency
braking is applied, m flashes in the
instrument cluster. Depending on the
situation, the vehicle may
automatically brake moderately or
hard. Front automatic braking can
only occur if a vehicle ahead is

172Driving and operating9Warning
Intelligent brake assist may
increase vehicle braking in
situations when it may not be
necessary. You could block the
flow of traffic. If this occurs, take
your foot off the brake pedal and
then apply the brakes as needed.
Forward collision alert 3 168.
Front pedestrian protection 3 173.
System limitations In some cases, the active emergencybraking system may provide an
automatic braking in situations that
seem to be unnecessary, for instance
in parking garages, due to traffic signs in a curve or due to vehicles in
another lane. This is normal
operation, the vehicle does not need service. Firmly apply the accelerator
pedal to override the automatic
braking if the situation and the
surroundings permit.
In the following cases, active
emergency braking performance is limited:
● driving on winding or hilly roads
● detecting all vehicles, especially vehicles with a trailer, tractors,
muddy vehicles, etc.
● detecting a vehicle when weather
limits visibility, such as in fog,
rain, or snow
● driving during nighttime
● sensor in the windscreen or radar
unit behind the front bumper
blocked by snow, ice, slush, mud, dirt, etc.
● windscreen damaged or affected
by foreign objects, e.g. stickers
Complete attention is always required
while driving, and you should be
ready to take action and apply the
brakes and / or steer the vehicle to
avoid crashes.We recommend to deactivate the
system in the vehicle personalisation
in the following cases:
● when towing a trailer or caravan
● when carrying long objects on roof bars or a roof rack
● when the vehicle is being towed with the engine running
● when a spare wheel is fitted that is smaller than the other wheels
● before using an automatic car wash with the engine running
● before placing the vehicle on a rolling road in a workshop
● if the windscreen has been damaged close to the camera
● if the front bumper has been damaged
● if the brake lamps are not working
Fault
In case the system requires a service, a message is displayed in the Driver
Information Centre.

188Driving and operatingAfter ignition is switched on, the lane
departure warning system is
activated. If the system is activated,
the LED in the button ½ is not
illuminated. To activate the system
when the system is deactivated,
press ½.
The system is only operable at
vehicle speeds above 37 mph and if
lane markings are available.
When the system recognises an
unintended lane departure, the
control indicator ) flashes yellow.
Simultaneously a chime sound is
activated.
Deactivation
To deactivate the system, press andhold ½. The LED in the button is
illuminated and ½ illuminates yellow in
the instrument cluster.
At speeds below 37 mph the system
is inoperable.
Fault
In the event of a fault, H appears
in the instrument panel, accompanied
by a display message and a warning
chime. Contact a dealer or a qualified
workshop to have the system
checked.
System limitations The system performance may notoperate properly when:
● Vehicle speed is below 37 mph.
● Windscreen is not clean or affected by foreign objects, e.g.
stickers.
● Driving on winding or hilly roads.
● During nighttime driving.
● Adverse environmental conditions like heavy rain, snow,
direct sunlight or shadows.
● The sensor in the windscreen is blocked by snow, ice, slush, mud,dirt, windscreen damage or
affected by foreign objects, e.g.
stickers.● The sun is shining directly into the camera lens.
● Close vehicles ahead.
● Driving on banked roads.
● Driving on road edges.
● Driving on roads with poor lane markings.
● Sudden lighting changes.
The system can not operate when no
lane marking is detected.
Lane keep assist
Lane keep assist helps to avoid
crashes due to unintentional lane
departures. The front camera
observes the lane markings between
which the vehicle is driving. If the
vehicle approaches a lane marking, the steering wheel is gently turned to
position the vehicle back into the lane. The driver will then notice a turning
movement of the steering wheel. Turn steering wheel in same direction, if
system steers not sufficient. Turn steering wheel gently into opposite
direction, if lane change is intended.