154Driving and operatingDeactivation of automatic operation1. Start the engine.
2. If the parking brake is released, apply the parking brake pulling the
switch m.
3. Take your foot off the brake pedal.
4. Press the switch m for at least
10 s and maximum 15 s.
5. Release the switch m.
6. Press and hold the brake pedal. 7. Pull the switch m for 2 s.
The deactivation of the automatic
operation of the electric parking brake
is confirmed by o illuminating in the
instrument cluster 3 96. The electric
parking brake can only be applied and released manually.
To reactivate the automatic
operation, repeat the steps described
above.
Functionality check
When the vehicle is not moving, the
electric parking brake might be
applied automatically. This is done to
check the system.Fault
Failure mode of electric parking brake is indicated by a control indicator j
and by a vehicle message which is
displayed in the Driver Information Centre.
Vehicle messages 3 105.
Apply electric parking brake: pull and
hold the switch m for more than
five seconds. If control indicator m
illuminates, electric parking brake is
applied.
Release electric parking brake: push
and hold the switch m for more than
two seconds. If control indicator m
extinguishes, electric parking brake is
released.
Control indicator m flashes: electric
parking brake is not fully applied or released. When continuously
flashing, release electric parking
brake and retry applying.
Brake assist If brake pedal is depressed quickly
and forcefully, maximum brake force
is automatically applied.Operation of brake assist might
become apparent by a pulse in the
brake pedal and a greater resistance
when depressing the brake pedal.
Maintain steady pressure on the
brake pedal as long as full braking is
required. Maximum brake force is
automatically reduced when brake pedal is released.
Hill start assist The system helps prevent unintendedmovement when driving away on
inclines.
When releasing the brake pedal after
stopping on an incline, brakes remain
on for further two seconds. The
brakes release automatically as soon
as the vehicle begins to accelerate.
172Driving and operatingActivation
A precondition is that forward collision
alert with front camera system is not
deactivated in the vehicle
personalisation menu 3 106.
Functionality
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 braking is
required.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. This front automatic braking can
only occur if a vehicle ahead is
detected 3 169 . On vehicles with front
pedestrian protection, front automatic
braking can also occur when a
pedestrian ahead is detected 3 174.
Emergency 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
the brake pedal less strongly results
in immediate hard braking. This
function helps the driver brake
quicker and harder before the
imminent collision.
Driving and operating1739Warning
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 3 169.
Front pedestrian protection 3 174.
Deactivation Active emergency braking can be
deactivated in the personalisation
menu 3 106. If deactivated, m
illuminates in the instrument cluster
and a warning message is displayed
in the Driver Information Centre.
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
System limitations In some cases, the active emergencybraking system may provide an
automatic braking in situations that
Driving and operating175Detecting front pedestrian ahead
A pedestrian ahead up to a distance
of approximately 40 m 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
5 km/h to 60 km/h in forward gear
● the distance to an pedestrian ahead is more than 40 m
● driving on winding or hilly roads
● driving during nighttime● 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 objects, e.g.
stickers
Parking assist
General information When attaching a trailer or bicycle
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.
The system operates with ultrasonic
parking sensors in the rear bumper.
Activation
Rear parking assist is activated when reverse gear is engaged and ignition
is switched on.
178Driving and operatingDeactivation
The system is deactivated
automatically when vehicle speed
exceeds 10 km/h, 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, H
illuminates in the instrument cluster.
A message is displayed in the Driver
Information Centre.9 Warning
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
180Driving and operating
Move forwards and backwards while
observing the warnings of the Parking
assist until the end of manoeuvre is
indicated.
Entry into a perpendicular parking
slot
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
20 km/h.
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 directed
towards the last one.When a free slot is detected, a visual
feedback on the Info Display and an
acoustic signal is given. Stop the
vehicle, select reverse gear, release
the steering wheel and start moving
without exceeding 7 km/h.
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.
Driving and operating183acoustic noise or mechanical
misalignments (sporadic false
warnings may occur).
Make sure that the front number
plate is properly mounted (not bent
and no gaps to the bumper on the left
or right side) and the sensors are
firmly in place.
Advanced parking assist system
may not respond to changes in the
available parking space after
initiating a parking manoeuvre. The
system may recognize an entry, a
gateway, a courtyard or even a crossing as a parking slot. After
selecting reverse gear the system
will start a parking manoeuvre. Take
care regarding the availability of the
suggested parking slot.
Surface irregularities, e.g. on
construction zones, are not detected
by the system. The driver accepts
responsibility.
Side blind spot alert
The side blind spot alert system
detects and reports objects on either
side of the vehicle, within a specified
blind spot zone. The system displaysa visual alert in each exterior mirror,
when detecting objects that may not
be visible in the interior and exterior
mirrors.
Side blind spot alert uses some of the
advanced parking assist sensors
which are located in the front and rear bumper on both sides of the vehicle.9 Warning
Side blind spot alert does not
replace driver vision.
The system does not detect:
● vehicles outside the side blind zones which may be rapidly
approaching
● pedestrians, cyclists or animals
Before changing a lane, always
check all mirrors, look over the
shoulder and use the turn signal.
Activation
7'' Colour Info Display: select Blind
spot monitoring on the Info Display
and activate the function.
8'' Colour Info Display: press Í.
Select Driving functions on the Info
Display and then Blind spot
monitoring . Activate the function.
B illuminates continously green in the
instrument cluster to confirm the
function.
Functionality
When the system detects a vehicle in the side blind zone while driving
forwards, an LED will illuminate in the
relevant exterior mirror.
The LED comes on immediately when being passed.
184Driving and operatingThe LED comes on after a delay when
passing another vehicle slowly.
Operation conditions
The following conditions must be
fulfilled for proper operation:
● all vehicles are moving in the same direction and in adjacent
lanes
● the speed of your vehicle is between 12 and 140 km/h
● passing a vehicle with a speed difference of less than 10 km/h
● another vehicle is passing with a speed difference of less than
25 km/h
● the traffic flow is normal
● driving on a straight or slightly curved road
● the vehicle is not pulling a trailer
No alert will be given in the following
situations:
● in the presence of non-moving objects, e.g. parked vehicles,
barriers, street lamps, road signs
● with vehicles moving in the opposite direction● driving on a winding road or asharp corner
● when passing or being passed by
a very long vehicle, e.g. lorry,
coach, which is at the same time
detected at the rear in the blind
spot angle and present in the
driver's forward field of vision
● in very heavy traffic, vehicles detected in front and behind are
confused with a lorry or a
stationary object
● when passing too quickly
Deactivation The system is deactivated in the
vehicle personalisation 3 106. B
extinguishes in the instrument cluster.
Additionally, an acoustic signal
sounds.
The state of the system is stored
when switching off the ignition.
The system is automatically
deactivated when towing an
electrically connected trailer.
Due to adverse weather conditions
such as heavy rain, false detections
may occur.Fault
In the event of a fault, B flashes for a
few moments in the instrument panel,
accompanied by R and a display
message. Contact a dealer or a
qualified workshop to have the
system checked.
Rear view camera
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.9 Warning
The rear view camera does not
replace driver vision. Note that
objects that are outside the
camera's field of view and the