186
Driving and operating
Brake preparation system
film, dust, ice or snow. In case of
9 Warning
sensor blockage, clean the sensor
When approaching a vehicle ahead
cover.
so quickly that a collision is likely, the
Active emergency braking is not
In some seldom cases the active
brake preparation system slightly
designed to apply strong
emergency braking system may
pressurises the brakes. This reduces
autonomous braking or to avoid
provide a short automatic braking in
the response time, when a manual or
automatically a collision. It is
situations that seem to be
automatic braking is requested.
designed to reduce the vehicle
unnecessary, for instance due to
speed before collision. It may not
The brake system is prepared so that
traffic signs in a curve or due to
react on stopped vehicles,
braking can occur more rapidly.
vehicles in another lane. This is
pedestrians or animals. After a
acceptable operation, the vehicle
Emergency automatic braking
sudden lane change, the system
does not need service. Firmly apply
needs a certain time to detect the
After the brake preparation and just
the accelerator pedal to override the
next preceding vehicle.
before the imminent collision, this
automatic braking.
The complete attention of the
function automatically applies limited
driver is always required while
Settings
braking to reduce the impact speed of
driving. The driver shall always be
the collision.
ready to take action and apply the
Settings can be changed in the
brakes and steer to avoid
vehicle personalisation menu in the
Forward looking brake assist
collisions. The system is designed
Info-Display.
In addition to brake preparation
to work with all occupants wearing
Select the relevant setting in
system and emergency automatic
their seat belts.
Settings in the Info-Display.
braking, the forward looking brake
Vehicle personalisation 3 124.
assist function makes the brake assist
System limitations
more sensitive. In this way,
The active emergency braking has
Fault
depressing the brake pedal slightly
limited or no function during rain,
results immediately in a strong
In the event of a system service
snow or heavy dirt, as the radar
braking. This function helps the driver
requirement, a message is displayed
sensor can be covered by a water
brake quicker and stronger before the
in the Driver Information Centre.
imminent collision.
Driving and operating
187
If the system does not work as it
for front obstacles sounds via the
should, vehicle messages are
front speakers, for rear obstacles it
displayed in the Driver Information
sounds via the rear speakers.
Centre.
Vehicle messages 3 122.
Parking assist
Front-rear parking assist
9 Warning
The driver bears full responsibility
An illuminated LED in the parking
for the parking manoeuvre.
assist button
r
indicates that the
system is ready to operate.
Always check the surrounding
area when driving backwards or
The system has four ultrasonic
If
r
is switched off within an ignition
forwards while using parking
parking sensors each in the rear and
cycle, the front parking assist is
assist system.
front bumper.
deactivated. If vehicle speed has
exceeded 15 mph beforehand,
Activation
parking assist will be reactivated
The front-rear parking assist
When reverse gear is engaged, the
when speed drops below 7 mph.
measures the distance between the
vehicle and obstacles in front of and
front and rear parking assist is ready
Indication
behind the vehicle. It informs and
to operate.
The system warns the driver with
warns the driver by giving acoustic
The system is also activated
acoustic signals against potentially
signals and display indication.
automatically at a speed up to
hazardous obstacles behind and in
It uses two different acoustic warning
7 mph.
front of the vehicle.
signals for the front and rear
monitoring areas, each with a
different tone frequency. The signal
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188
Driving and operating
Depending on which side of the
Rear obstacles are indicated
vehicle is closer to an obstacle, you
acoustically and visually at the same
will hear acoustic warning signals on
time.
the respective side of the vehicle. The
Front obstacles are indicated visually
interval between the sounds
first. At distances less than 80 cm an
becomes shorter as the vehicle gets
acoustic signal also sounds.
closer to that obstacle. When the
The distance indication can be
distance is less than approx. 30 cm,
inhibited by vehicle messages with a
the sound is continuous.
higher priority. After dismissing the
Additionally, the distance to rear and
message distance indication appears
front obstacles is displayed by
again.
changing distance lines in the Driver
Information Centre 3 116 or,
Deactivation
Manual deactivation is also possible
depending on the version, on the Info-
The rear parking assist automatically
by pressing the parking assist button
Display 3 121.
switches off when reverse gear is
r
disengaged.
When the system is deactivated
The front parking assist is deactivated
manually, the LED in the button
automatically at a speed above
extinguishes and Park Assist Off
7 mph.
pops-up in the Driver Information
Centre.
After a manual deactivation, the front-
rear parking assist is activated again
if
r
is pressed or if reverse gear is
engaged.
The complete system can be
manually deactivated in the vehicle
personalisation menu in the
Info-Display. It remains deactivated
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Driving and operating
189
during the ignition cycle or until
Notice
Special attention must be paid to
activation in personalisation menu
The parking assist system
low obstacles which can damage
again. Vehicle personalisation 3 124.
automatically detects factory-fitted
the lower part of the bumper.
towing equipment. It is deactivated
When using the trailer hitch change
when the connector is plugged in.
the configuration settings in the
vehicle personalisation menu in the
Caution
It is possible that the sensor detects
Info-Display. Vehicle personalisation
a non-existing object (echo
3 124.
Performance of the system can be
disturbance) caused by external
reduced when sensors are
acoustical or mechanic
Fault
covered, e.g. by ice or snow.
disturbances.
In the event of a fault or if the system
Performance of the parking assist
Notice
does not work temporarily, e.g.
system can be reduced due to
If engaging a forward gear and
because of high external noise level
heavy loading.
exceeding a certain speed, the rear
or other interference factors, a
Special conditions apply if there
parking assist will be deactivated
message pops-up in the Driver
are taller vehicles in the vicinity
when the rear carrier system is
Information Centre.
(e.g. off-road vehicles, mini vans,
extended.
Vehicle messages 3 122.
vans). Object identification and
If engaging reverse gear first, the
correct distance indication in the
parking assist will detect the rear
Basic notes on parking assist
upper part of these vehicles
carrier system and provide a buzzing
systems
cannot be guaranteed.
sound. Press
r
briefly to
Objects with a very small reflection
deactivate the parking assist.
9 Warning
cross-section, e.g. objects of
narrow size or soft materials, may
Side blind spot alert
Under certain circumstances,
not be detected by the system.
The side blind spot alert system
various reflective surfaces on
Parking assist systems do not
detects and reports objects on either
objects or clothing as well as
detect objects outside the
side of the vehicle, within a specified
external noise sources may cause
detection range.
"blind spot" zone. The system
the system to fail to detect
displays a visual alert in each exterior
obstacles.
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190
Driving and operating
mirror, when detecting objects that
the warning symbol B starts flashing
warning symbols. If a vehicle is then
may not be visible in the interior and
yellow as a warning not to change
detected in the blind zone, the
exterior mirrors.
lanes.
warning symbols B will illuminate as
normal on the relevant side.
The system's sensors are located in
Notice
the bumper on the left and right side
If the passing vehicle is at least
When the vehicle is started, both
of the vehicle.
6 mph faster than the passed
exterior mirror displays will briefly
vehicle, the warning symbol B in the
illuminate to indicate that the system
9 Warning
relevant exterior mirror may not
is operating.
illuminate.
The system can be activated or
Side blind spot alert does not
deactivated in the Info-Display,
replace driver vision.
vehicle personalisation 3 124.
The system does not detect:
Deactivation is indicated by a
● vehicles outside the side blind
message in the Driver Information
zones which may be rapidly
Centre.
approaching
Detection zones
● pedestrians, cyclists or animals
The detection zones start at the rear
Before changing a lane, always
bumper and extend approx.
check all mirrors, look over the
three metres rearwards and to the
shoulder and use the turn signal.
sides. The height of the zone is
approx. between half a metre and
When the system detects a vehicle in
two metres off the ground.
the side blind zone while driving
Side blind spot alert is active from
forward, either while passing a
speeds of 6 mph up to 87 mph.
Side blind spot alert is designed to
vehicle or being passed, a yellow
Driving faster than 87 mph
ignore stationary objects, e.g.
warning symbol B will illuminate in
deactivates the system, indicated by
guardrails, posts, curbs, walls and
the relevant exterior mirror. If the
low lighting warning symbols B in
beams. Parked vehicles or oncoming
driver then activates the turn signal,
both exterior mirrors. Reducing the
vehicles are not detected.
speed again will extinguish the
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Driving and operating
191
Fault
Functionality
9 Warning
Occasional missed alerts can occur
under normal circumstances and will
The rear view camera does not
increase in wet conditions.
replace driver vision. Note that
objects that are outside the
Side blind spot alert does not operate
camera's field of view and the
when the left or right corners of the
parking assist sensors, e.g. below
rear bumper are covered with mud,
the bumper or underneath the
dirt, snow, ice, slush, or in heavy
vehicle, are not displayed.
rainstorms. Cleaning instructions
3 253.
Do not reverse the vehicle by only
looking at the Info-Display and
In the event of a fault in the system or
check the surrounding area
if the system does not work due to
behind and around the vehicle
temporary conditions, a message is
before reversing.
displayed in the Driver Information
The camera is mounted in the tailgate
Centre. Seek the assistance of a
handle.
Activation
workshop in case of a permanent
fault.
Rear view camera is automatically
activated when reverse gear is
Rear view camera
engaged.
The rear view camera assists the
driver when reversing by displaying a
view of the area behind the vehicle.
The view of the camera is displayed
in the Info-Display.
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