Driving and operating167System limits9Warning
The system's automatic brake
force does not permit hard braking and the braking level may not be
sufficient to avoid a collision.
● After a sudden lane change, the system needs a certain time to
detect the next preceding
vehicle. So if a new vehicle is
detected, the system may
accelerate instead of braking.
● Adaptive cruise control does ignore the oncoming traffic.
● Adaptive cruise control does not consider pedestrians and
animals for braking and driving
off.
● Adaptive cruise control considers
stopped vehicles only at low
speed.
● Do not use adaptive cruise control when towing a trailer.
● Do not use adaptive cruise control on roads with an incline ofmore than 10%.
As the radar's field of detection is
quite narrow, it is possible that the
system may not detect:
● Vehicles of reduced width (motorcycles, scooters...).
● Vehicles not running in the middle of the lane,
● Vehicles entering a corner.
● Vehicles suddenly pulling out.
Bends
The adaptive cruise control calculates
a predicted path based on the
centrifugal force. This predicted path
considers the current bend
characteristic, but cannot consider a
future bend change. The system may lose the current vehicle ahead or
consider a vehicle which is not in the
actual lane. This can happen when
entering or exiting a bend or if the
bend gets stronger or weaker. If it no
longer detects any vehicle ahead,
then control indicator A will
extinguish.
If the centrifugal force is too high in a bend, the system slows down the vehicle slightly. This braking level is
not designed to avoid spinning-off the
bend. The driver is responsible for
reducing the selected speed before
entering a bend and in general to
adapt the speed to the road type and
to existing speed limits.
168Driving and operatingMotorways
On motorways, adapt the set speed
to the situation and the weather.
Always consider that adaptive cruise
control has a limited visibility range, a
limited braking level and a certain
reaction time to verify if a vehicle is on
the driving path or not. Adaptive
cruise control may not be able to
brake the vehicle in time to avoid a
collision with a much slower vehicle or after a lane change. This is
particularly true while driving fast or if
the visibility is reduced due to weather
conditions.
While entering or exiting a motorway,
adaptive cruise control may lose the
vehicle ahead and accelerate up to
the set speed. For this reason,
decrease the set speed before the
exit or before the entry.
Vehicle path changesIf another vehicle enters your driving
path, adaptive cruise control will first
consider the vehicle when it is
completely in your path. Be ready to
take action and depress the brake
pedal, if you need to brake more
quickly.
Hill and trailer considerations9 Warning
Do not use adaptive cruise control
on steep hill roads.
System performance on hills depends
on vehicle speed, vehicle load, traffic
conditions and the road gradient. It
may not detect a vehicle in your path
while driving on hills. On steep hills,
you may have to use the accelerator
pedal to maintain your vehicle speed.
When going downhill you may have to
brake to maintain or reduce your
speed.
Note that applying the brake
deactivates the system.
Radar unit
The radar unit is located in the middle of the front bumper.
9 Warning
The radar unit was aligned
carefully during manufacture.
Therefore, after a frontal accident, do not use the system. The front
Driving and operating169bumper may appear to be intact,
however the sensor behind can be
out of position and react
incorrectly. After an accident,
consult a workshop to verify and
correct the adaptive cruise control
sensor position.
Fault
In the event of a fault with the cruise
control, you are alerted by the
illumination of a warning lamp and the
display of a message in the
instrument panel, accompanied by an
audible signal.
The adaptive cruise control may not
operate correctly if traffic signs do not comply with the Vienna Convention
on Road Signs and Signals (Wiener
Übereinkommen über
Straßenverkehrszeichen).
Have the system checked by a dealer
or a qualified workshop.
As a safety measure, do not use the
system if the brake lamps are faulty.
Do not use the system if the front
bumper is damaged.
Forward collision alert
The forward collision alert may help toavoid or reduce the harm caused by
front-end crashes.
The forward collision alert uses the
front camera in the windscreen and a
radar unit located behind the front
bumper of the vehicle to detect a
vehicle directly ahead, in your path.
If a vehicle directly ahead is
approached too quickly, a warning
chime and alert in the Driver
Information Centre is provided.
Activation
Forward collision alert detects
vehicles and operates automatically
at all speeds above 3 mph and
87 km/h.
Alerting the driver The system triggers different level of
alerts depending on the risk of
collision detected. The alerts are
displayed in the instrument cluster.
Level 1: A visual alert is displayed.
Level 2: A visual alert is displayed and
an audible alert is triggered.Caution
The colour lighting of this control
indicator does not correspond to
local traffic laws on following
distance. The driver bears full
responsibility for maintaining safe
following distance according to
applicable traffic rules, weather
and road conditions etc. at all
times.
When the time to a potential collision
with a vehicle in front gets too small
and a collision is imminent, a warning is displayed in the Driver InformationCentre.
Simultaneously a warning chime sounds. Depress the brake pedal and
steer the vehicle, if it is required by the
situation.
Selecting the alert sensitivity
7'' Colour-Info-Display: Adjust the
alert sensitivity in the vehicle
personanlisation, 3 104.
174Driving and operating9Danger
Front pedestrian braking does not
provide an alert or automatically
brake the vehicle, unless it detects
a pedestrian.
The system may not detect
pedestrians, including children,
when the pedestrian is not directly ahead, not fully visible, not
standing upright, or when part of a
group.
Front pedestrian protection includes:
● detecting front pedestrian ahead● front pedestrian alert
Detecting front pedestrian ahead
A pedestrian ahead up to a distance
of approximately 40m is indicated by
a symbol in the instrument cluster.
Front pedestrian alert
When approaching a detected
pedestrian too quickly, a warning
message is displayed in the Driver
Information Centre. A warning chime
is provided.
Cruise control or Adaptive cruise
control may be disengaged when the
front pedestrian alert occurs.
System limitations In the following cases, front
pedestrian protection may not detect
a pedestrian ahead or sensor
performance is limited:
● Vehicle speed is out of range from 3 mph to 37 mph in forward
gear.
● The distance to an pedestrian ahead is more than 40 metres.
● Driving on winding or hilly roads.
● During nighttime driving.
● Weather limits visibility, such as fog, rain, or snow.
● The sensor in the windscreen or the radar unit behind the front
bumper are blocked by snow, ice,
slush, mud, dirt etc.
● The windscreen is damaged or affected by foreign items, e.g.
stickers.Parking assist
General information
When attaching a trailer or bike
carrier to the trailer hitch, the parking
assist is deactivated.9 Warning
The driver bears full responsibility
for the parking manoeuvre.
Always check the surrounding
area when driving backwards or
forwards while using parking
assist system.
Rear parking assist
The rear parking assist makes
parking easier by measuring the
distance between the vehicle and
rear obstacles. It informs and warns
the driver by giving acoustic signals
and display indication.
256IndexAAccessories and vehicle modifications .......................... 202
Active emergency braking ..........170
Active head restraints ...................45
Adaptive cruise control .........99, 162
AdBlue .................................. 97, 143
Adjustable air vents ...................131
Advanced parking assist ............177
Airbag and belt tensioners ...........93
Airbag deactivation ................60, 94
Airbag label................................... 55 Airbag system .............................. 55
Air conditioning regular operation ................................ 132
Air conditioning system .............. 124
Air intake .................................... 132
Air vents...................................... 131
Antilock brake system ................ 150
Antilock brake system (ABS) .......95
Anti-theft alarm system ................35
Anti-theft locking system .............. 35
Appearance care ........................231
Armrest ................................... 50, 51
Ashtrays ....................................... 86
Automatic anti-dazzle ..................39
Automatic light control ...............112
Automatic locking ........................28
Automatic transmission .............146Autostop............................... 98, 139
Auxiliary heater ........................... 131
B Battery discharge protection ......122
Battery voltage ........................... 104
BlueInjection ............................... 143
Bonnet ....................................... 204
Brake and clutch fluid .................235
Brake and clutch system .............95
Brake assist ............................... 153
Brake fluid .................................. 207
Brakes ............................... 150, 207
Breakdown.................................. 229
Bulb replacement ....................... 210
C
Capacities .................................. 245
Catalytic converter .....................143
Central locking system ................24
Centre console lighting ..............121
Centre console storage ...............69
Changing tyre and wheel size ...220
Charging system .......................... 94
Child locks ................................... 29
Child restraint installation locations ................................... 64
Child restraints.............................. 61
Child restraint systems ................61
Cigarette lighter ........................... 86
Climate control ............................. 15