Driving and operating173The 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 in the range between
3 mph and 53 mph. With radar sensor
and front camera active emergency
braking operates in forward gear in the range between 3 mph and87 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 3 107.
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 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
detected. On vehicles with front
pedestrian protection, front automatic
braking can also occur when a
pedestrian ahead is detected.
Forward collision alert 3 170
Front pedestrian protection 3 175Emergency automatic braking may
slow the vehicle to a complete stop to try to avoid a potential crash. If this
happens, emergency automatic
braking may engage the electric
parking brake to hold the vehicle at a
stop. To release press the electric
parking brake button or firmly press
the accelerator pedal.9 Warning
Emergency automatic braking is
an emergency crash preparation
feature and is not designed to
avoid crashes. Do not rely on the
system to brake the vehicle.
Emergency automatic braking will
not brake outside of its operating speed range and only responds to
detected vehicles and
pedestrians.
Forward looking brake assist
In addition to the brake preparation
system and emergency automatic
braking, the forward looking brake
assist function makes the brake assist more sensitive. Therefore, pressing
174Driving and operatingthe brake pedal less strongly results
in immediate hard braking. This
function helps the driver brake
quicker and harder before the
imminent collision.9 Warning
Active emergency braking is not
designed to apply hard
autonomous braking or to
automatically avoid a collision. It is
designed to reduce the vehicle
speed before a collision. It may not
react to animals. After a sudden
lane change, the system needs a
certain time to detect the next
preceding vehicle.
The complete attention of the
driver is always required while
driving. The driver must always be
ready to take action and apply the brakes and steer to avoid
collisions.
The system is designed to work with
all occupants wearing their seat belts.
Intelligent brake assist
If the vehicle is equipped with radar
sensor, intelligent brake assist may
be available. Intelligent brake assist
provides a boost to braking when the
brake pedal is quickly applied. The
braking is based on the speed of
approach and distance to a vehicle
ahead.
Minor brake pedal pulsations or pedal movement during this time is normal
and the brake pedal should continue to be applied as needed. Intelligent
brake assist will automatically
disengage only when the brake pedal is released.9 Warning
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 3 170.
Front pedestrian protection 3 175.
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.
● weather limits visibility, such as fog, rain, or snow
● driving during nighttime
Driving and operating175● the sensor in the windscreen orthe radar unit behind the front
bumper are blocked by snow, ice, slush, mud, dirt etc.
● the windscreen is 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 beendamaged close to the camera
● if the front bumper has been damaged
● if the brake lights are not working
Fault
In case the system requires a service, a message is displayed in the Driver
Information Centre.
If the system does not work as it
should do, vehicle messages are
displayed in the Driver Information
Centre.
Vehicle messages 3 106.
Front pedestrian protection
Front pedestrian protection may help
to avoid or reduce the harm caused
by front-end crashes with pedestrians when driving forward.
The system uses the front camera in
the windscreen and a radar unit in the
front bumper to detect a pedestrian
directly ahead in your path.Front pedestrian protection can
detect and alert to pedestrians in a
forward gear at speeds between
3 mph and 37 mph. Additionally front
pedestrian protection can provide a
boost to braking or automatically
brake the vehicle.
During nighttime driving, system
performance is limited.9 Danger
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
Front pedestrian protection is
activated together with forward
collision alert.
Driving and operating177The system is ready to operate when
the LED in the parking assist button
¼ is not illuminated.
Indication
Depending on which side of the
vehicle is closer to an obstacle, you will hear acoustic warning signals inthe vehicle on the respective side.
The interval between the sounds
becomes shorter as the vehicle gets
closer to that obstacle. When the
distance is less than approx. 30 cm,
the sound is continuous.Additionally, the distance to rear
obstacles is displayed by changing
distance lines in the Info Display
3 102. When the obstacle is very
close, 9 for danger is displayed.
Deactivation
The system is switched off when
reverse gear is disengaged. Press ¼
to deactivate the system manually.
The LED in the button illuminates
when the system is deactivated. If the
system has been deactivated
manually, it is not reactivated
automatically the next time the
ignition is switched on.
Front-rear parking assist
The front-rear parking assist
measures the distance between the
vehicle and obstacles in front and
behind the vehicle. It informs and
warns the driver by giving acoustic
signals and display indication.
It uses two different acoustic warning
signals for the front and rear
monitoring areas, each with a
different tone frequency.
The system operates with ultrasonic
parking sensors in the rear and front
bumper.
178Driving and operatingActivation
In addition to the rear parking assist,
the front parking assist is triggered
when an obstacle is detected in front
and the speed of the vehicle is below 6 mph.
The system is ready to operate when
the LED in the parking assist button
¼ is not illuminated.
When the system is deactivated, the
LED in the button illuminates.
Indication
The system warns the driver with
acoustic signals against potentially
hazardous obstacles in front of the
vehicle and behind the vehicle.
Depending on which side of the
vehicle is closer to an obstacle, you
will hear acoustic warning signals in the vehicle on the respective side.
The interval between the sounds
becomes shorter as the vehicle gets
closer to that obstacle. When the
distance is less than approx. 30 cm,
the sound is continuous.
Additionally, the distance to rear and
front obstacles is displayed by
changing distance lines in the Info
Display 3 102.
If the vehicle stops for more than
3 seconds in a forward gear, if
automatic transmission is in P or if no
further obstacles are detected, no
acoustic warning signals are given.
Deactivation
The system is deactivated
automatically when vehicle speed
exceeds 6 mph, by applying the
electric parking brake or by pressing
the parking assist button ¼.
When the system is deactivated
manually, the LED in the button
illuminates.
If the system has been deactivated
manually, it is not reactivated
automatically the next time the
ignition is switched on.
System limitations In the event of a fault or if the system does not work temporarily, e.g.
because of high external noise level
or other interference factors, C
illuminates in the instrument cluster.
A message is displayed in the Driver Information Centre.
Driving and operating1799Warning
Under certain circumstances,
various reflective surfaces on
objects or clothing as well as
external noise sources may cause the system to fail to detect
obstacles.
Special attention must be paid to
low obstacles which can damage
the lower part of the bumper.
Caution
Performance of the system can be reduced when sensors are
covered, e.g. by ice or snow.
Performance of the parking assist
system can be reduced due to
heavy loading.
Special conditions apply if there
are taller vehicles in the vicinity
(e.g. off-road vehicles, mini vans,
vans). Object identification and correct distance indication in the
upper part of these vehicles
cannot be guaranteed.
Objects with a very small reflection
cross-section, e.g. objects of
narrow size or soft materials, may
not be detected by the system.
Parking assist systems do not
detect objects outside the
detection range.
Advanced parking assist
9 Warning
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 while parking.
Advanced parking assist provides
assistance for the following
manoeuvres:
● entry into a parallel parking slot
● entry into a perpendicular parking
slot
● exit from a parallel parking slot
The driver must control acceleration, braking and gear shifting, while
steering is done automatically. The driver can take control at any time by
gripping the steering wheel.
It may be necessary to move forwards and backwards more than once.
Instructions are given in the Info
Display 3 102.
Advanced parking assist can only be activated when driving forwards.
Driving and operating181Entry into a perpendicular parkingslot
Activation
7'' Colour Info Display: to search for a parking slot, activate the system by
selecting Park Assist on the Info
Display. Then select Enter
perpendicular parking space .
8'' Colour Info Display: when search
for a parking slot, activate the system
by pressing Í. Select Driving
functions on the Info Display and then
Park Assist . Select Enter bay parking
space .
Slow down the vehicle speed below
12 mph.
Select parking side by switching on
the turn light on the respective side.
The allowed parallel distance
between the vehicle and a row of
parked cars is between 0.5 m and 1.5 m.
When several successive slots are found, the vehicle will be directedtowards the last one.
When a free slot is detected, a visual
feedback on the Info Display and an
acoustic signal are given. Stop the
vehicle, select reverse gear, release
the steering wheel and start moving without exceeding 4 mph.Move forwards and backwards as
instructed by observing the warnings
of the parking assist and paying
attention to the acoustic signals until
the end of manoeuvre is indicated. When finished, $ extinguishes in the
instrument cluster.
During the parking manoeuvre, the
system is automatically deactivated
once the rear of the vehicle is within
50 cm of an obstacle.
182Driving and operatingExiting a parallel parking slot
Activation
7'' Colour Info Display: when exiting a parallel parking slot, activate the
system by selecting Park Assist on
the Info Display. Then select Exit
parallel parking space .
8'' Colour Info Display: when exiting a parallel parking slot, activate the
system by pressing Í. Select Driving
functions on the Info Display and then
Park Assist . Select Exit parallel
parking space .
Select exit side by switching on the
respective turn light.
Engage reverse or forward gear,
release the steering wheel and start
moving without exceeding 3 mph.
Move forwards and backwards while
observing the warnings of the Parking
assist until the end of manoeuvre is
indicated. The manoeuvre is
complete when the vehicle's front
wheels are out of the parking slot.
After deactivation check control over
the vehicle.
Display indication The instructions on the display show: ● general hints and warning messages
● 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 or first gear
● the demand to stop or to drive slowly
● the successful completion of the parking manoeuvre indicated by
a pop-up symbol and a chime
● the cancelling of a parking manoeuvre
Deactivation The current park assist manoeuvre is
cancelled via the button to return to
the previous screen in the Info
Display. To deactivate the system
completely, press ¼ in the centre
console.
The system is deactivated
automatically:
● if the ignition is switched off
● if stalling the engine
● if no manoeuvre is started within 5 minutes of selection of the typeof manoeuvre