170Driving and operatingActive emergency braking
Active emergency braking can help to reduce the damage and injury from
crashes with vehicles, pedestrians
and obstacles directly ahead, when a
collision can no longer be avoided
either by manual braking or by
steering. Before the active
emergency braking applies, the driver is warned by the forward collision
alert 3 167 and front pedestrian
protection 3 172.
The feature uses various inputs (e.g.
camera 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
a forward gear above walking speed
up to 80 km/h.
A precondition is that the system is
not deactivated in the vehicle
personalisation menu 3 91.
The system includes: ● brake preparation system
● emergency automatic braking
● forward looking brake assist
● front pedestrian protection system
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.
The brake system is prepared so that braking can occur more rapidly.
If equipped only with front camera the
system operates up to a speed of
80 km/h.
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
prevent a crash.
Depending on the situation, the
vehicle may automatically brake
moderately or hard. This front
automatic braking can only occur if a
vehicle ahead is detected, indicated
by the vehicle ahead indicator A
3 167. On vehicles with front
178Driving and operatingAdvanced parking assist9Warning
The driver bears full responsibility
for accepting the parking slot
suggested by the system and the
parking manoeuvre.
Always check the surrounding
area in all directions when using
the advanced parking assist.
The advanced parking assist
measures a suitable parking slot
while passing, calculates the
trajectory and automatically steers
the vehicle into a parallel or
perpendicular parking slot.
Instructions are given in the Driver
Information Centre 3 82 or,
depending on the version, on the Info Display 3 85, supported by acoustic
signals.
The driver must control acceleration, braking and gear shifting, while
steering is done automatically.Advanced parking assist is always
combined with front-rear parking assist. Both systems use the same
sensors in the front and rear bumper.
The system has six ultrasonic parking
sensors in the front bumper and five
ultrasonic parking sensors in the rear
bumper.
Activation of advanced parking assist Advanced parking assist can only be
activated when driving forwards.When searching for a parking slot, the system is ready to operate with a
short press of (.
The system recognises and
memorises 10 m for parallel parking
slots or 6 m for perpendicular parking
slots in the parking assist mode.
The system can only be activated at
a speed up to 30 km/h and the system
searches for a parking slot at a speed up to 30 km/h.
The maximum allowed parallel
distance between the vehicle and a
row of parked cars is 1.8 m for parallel
parking and 2.5 m for perpendicular
parking.
Driving and operating179FunctionalityParking slot searching mode,
indication in the Info Display
Select parallel or perpendicular
parking slot by touching the
respective icon on the Info Display.
Select parking side by touching the respective icon on the Info Display.
When a slot is detected, a visual
feedback on the Info Display and an
acoustic signal is given.
If the driver does not stop the vehicle after a parking slot is proposed, the
system starts to search for another
suitable parking slot.
Park guiding mode
The parking slot suggestion of the
system is accepted when the vehicle is stopped by the driver within 10 m
for parallel parking slots or 6 m for
perpendicular parking slots after the
Stop message is given. The system
calculates the optimal path into the
parking slot.
A brief vibration in the steering wheel
after engaging reverse gear indicates
that the steering is controlled by the
system. Then the vehicle is steered into the slot automatically by giving
the driver detailed instructions for
180Driving and operatingbraking, accelerating and gear
shifting. The driver must keep hands
away from the steering wheel.
Always pay attention to the sound of
the front-rear parking assist.
Continuous sound indicates that the
distance to an obstacle is less than
approx. 30 cm.
If, for any reason, the driver must take over control of the steering, hold the
steering wheel only at the outer edge. Automatic steering is cancelled in thisevent.Display indication
The instructions in the Info Display
show:
● General hints and warning messages.
● A hint when driving faster than 30 km/h during parking slot
searching mode.
● The demand to stop the vehicle, when a parking slot is detected.
● The direction of driving during the
parking manoeuvre.
● The demand to shift into reverse gear or drive mode.● The demand to stop or to driveslowly.
● For some of the instructions a progress bar is shown in the
Driver Information Centre.
● The successful completion of the
parking manoeuvre indicated by
a pop-up symbol and a chime.
● The cancelling of a parking manoeuvre.
Display priorities
Advanced parking assist indication in
the Info Display can be inhibited by
vehicle messages with a higher
priority. After approving the message, advanced parking assist instructions
appear again and the parking
manoeuvre can be continued.
Deactivation
The system is deactivated by:
● a short press of (
● parking manoeuvre successfully ended●driving faster than 30 km/h during
parking slot search without
braking despite message in the
Info Display
● driving faster than 8 km/h during parking guidance
● driver interference on steering wheel detected
● exceeding number of maximum gear changes: eight cycles when
parallel parking or five cycles
when perpendicular parking
● switching off the vehicle
Deactivation by the driver or by the
system during manoeuvring will be indicated by a message on the
display. Additionally, an acoustic
signal sounds.
Fault
A message appears when:
● There is a fault in the system.● The driver did not successfully complete the parking
manoeuvre.
● The system is not operational.
● Any of the deactivation reasons described above apply.
Driving and operating187
Trajectory lane of the vehicle is
shown in accordance with the
steering angle.
Warning symbols
Warning symbols are indicated as
triangles 9 on the picture, which
show obstacles detected by the rear
sensors of the advanced parking
assist.
Additionally, 9 appears on the top
line of the Info Display with the
warning to check the vehicle
surroundings.
Display settings
Brightness and contrast can be set by
touching the touch screen display
when rear view camera is active.
Deactivation The camera is switched off when a
certain forward speed is exceeded or
if reverse gear is not engaged for
approx. 15 seconds. Rear view
camera can be manually deactivated
in the vehicle personalisation menu in the Info Display. Select the relevantsetting in Settings I Vehicle settings .
Deactivation of guiding lines and
warning symbolsActivation or deactivation of the visual
guiding lines and the warning
symbols can be changed in the
Settings menu in the Info Display.
Select the relevant setting in Settings
I Rear camera .
Info Display 3 85.
Vehicle personalisation 3 91.
Fault
Fault messages are displayed with a 9 on the Driver Information Centre.
The rear view camera may not
operate properly when:
● The surrounding is dark.
● The sun or the beam of headlights is shining directly into
the camera lens.
● Ice, snow, mud, or anything else covers the camera lens. Clean
the lens, rinse it with water, and
wipe it with a soft cloth.
● The vehicle had a rear end accident.
● There are extreme temperature changes.
190Driving and operating
An exclamation mark in a frame
indicates that there is an additional
sign detected which cannot be clearly
identified by the system.
The system performance depends on the lighting conditions.
Display indication Information about the currently valid
traffic signs is available on the
designated traffic sign assistant page
in the Driver Information Centre.
Additionally, the currently valid speed limit is displayed permanently in the
lower line of the Driver Information
Centre. In case a speed limit with add
on sign is available, a + symbol is
displayed in this area.
Choose Vehicle info via right steering
wheel buttons and press { or } to
select traffic sign assistant page
3 82.
When another page on the Driver Information Centre menu was
selected and then traffic sign
assistant page is chosen again, the
last recognised traffic sign will be
displayed.
Alert function
Once activated, speed limit and no
passing signs are displayed as pop-
up alerts in the Driver Information
Centre.
The alert function can be activated or
deactivated by pressing 9 on the
steering wheel.
System reset
The content of the traffic sign display
can be cleared in the settings menu
of the traffic sign assistant page by
selecting Reset and confirm by
pressing 9 on the steering wheel
controls.
Driving and operating191Alternatively, 9 can be pressed for
3 seconds to clear the content of the
page.
In some cases, traffic sign assistant is
cleared up automatically by the
system.
Clearing of traffic signs
There are different scenarios that
lead to clearing the currently
displayed traffic signs. After clearing,
the “Default Sign” or a sign from
navigation map data is displayed in
the Driver Information Centre.
Reasons for signs being cleared: ● A predefined distance was driven
or time has elapsed (differs for
each sign type)
● Vehicle drives through a turn
● If speed drops below 52 km/h (city entry detection)
Fault
Traffic sign assistant may not operate
correctly if:
● The area of the windscreen, where the front camera is
located, is not clean or affected
by foreign items, e.g. stickers.
● Traffic signs are completely or partially covered or difficult to
discern.
● There are adverse environmental
conditions, e.g. heavy rain, snow,
direct sunlight or shadows.
● Traffic signs are incorrectly mounted or damaged.
● Traffic signs do not comply with the Vienna Convention on Road
Signs and Signals.Caution
The system is intended to help the driver within a defined speed
range to discern certain traffic
signs. Do not ignore traffic signs
which are not displayed by the
system.
The system does not discern any other than the conventional traffic
signs that might give or end a
speed limit.
Do not let this special feature
tempt you into taking risks when
driving.
Always adapt speed to the road
conditions.
The driver assistance systems do not relieve the driver from full
responsibility for vehicle
operation.
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.
Override the system by turning the
steering wheel.
When crossing a lane marking
significantly, lane keep assist starts a
visual and acoustic warning.
192Driving and operatingUnintended lane departure is
assumed:
● without using turn light
● using the turn light in the opposite
direction of the lane departure
● without braking
● without acceleration
● without active steering
Note
The system is switched off during
detection of ambiguous lane
markings, e.g. in construction areas.
Note
The system may be switched off if it
detects lanes which are too narrow,
too wide or too curved.Activation
The lane keep assist is activated by
pressing a. The LED in the button
illuminates to indicate that the system
is switched on.
When the control indicator a in the
instrument cluster illuminates green,
the system is ready to assist.
The system is operational at vehicle
speeds above 60 km/h and if lane
markings are available.
The system gently turns the steering
wheel and the control indicator a
changes to yellow, if the vehicle
approaches a detected lane marking
without using the turn light in that
direction.
The system alerts by flashing a
together with three chimes, from the respective direction, if the lane is
departed significantly.
The system is only operable when a
lane marking is detected.
If the system only detects lane
markings on one side of the road, it
will only assist for this side.
Lane keep assist detects hands-free
driving. In this case a message in the
Driver Information Centre pops-up
and a chime sounds as long as lane
keep assist detects hands-free
driving.
Always take the steering wheel while
driving. Both the driving manner and
the road condition may affect the