118Driving and operatingFunctionality 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
k and by a vehicle message which
is displayed in the Driver Information
Centre.
Vehicle messages 3 76.
Control indicator j 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 2 seconds. The brakes
release automatically as soon as the
vehicle begins to accelerate.Ride control systems
Electronic Stability Control
and Traction Control system
Electronic stability control improves
driving stability when necessary,
regardless of the type of road surface
or tyre grip.
As soon as the vehicle starts to
swerve (understeer / oversteer),
engine output is reduced and the
wheels are braked individually.
Electronic stability control operates in combination with the traction control
system. It prevents the driven wheels
from spinning.
The traction control system is a
component of the electronic stability
control.
The traction control system improves
driving stability when necessary, regardless of the type of road surface
or tyre grip, by preventing the driven
wheels from spinning.
As soon as the driven wheels starts to spin, engine output is reduced and
the wheel spinning the most is braked
134Driving and operating9Warning
Smart 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 brakepedal and then apply the brakes
as needed.
Forward collision alert 3 135.
Front pedestrian protection 3 137.
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 various
types of objects, i.e., traffic signs or
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
might be limited:
● driving on winding or hilly roads
● detecting vehicles with a trailer, tractors, muddy vehicles, etc.
● detecting a vehicle when weather
limits visibility, such as in fog,
rain, or snow
● driving during nighttime
● 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
the bumper is damaged or
affected by foreign objects, e.g.
license plate support
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 the vehicle is fitted with snow chains
● 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 lights are not working
Fault
In case the system requires a service,
a message is displayed in the Driver
Information Centre.
138Driving and operatingThe system can only be deactivated
by deactivating the active emergency braking in the vehicle personalisation
3 77. When ignition is switched on
next time, system is activated.
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 80 km/h in forward gear
● driving on winding or hilly roads
● driving in the dark
● weather limits visibility, such as fog, rain, or snow● 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
● the front bumper is damaged or affected by foreign objects, e.g.
license plate support
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 system warns the driver with
acoustic signals and display
indication against potentially
hazardous obstacles behind the
vehicle while reverse gear is
engaged.
The system operates with ultrasonic
parking sensors in the rear bumper.
Driving and operating139Activation
The system is ready to operate when
the LED in the parking assist button
e is not illuminated. The state of the
system is memorised when the
ignition is switched off.
Once activated, rear parking assist is
ready to operate when reverse gear
is engaged and ignition is switched
on.
Indication
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
obstacles is displayed by changing
distance lines in the Info Display
3 75 . When the obstacle is very close,
+ for danger is displayed.
Deactivation
The system is switched off when
reverse gear is disengaged. Press e 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
140Driving and operatingbehind 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.
Activation
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 10 km/h.
The system is ready to operate when
the LED in the parking assist button
e is not illuminated. The state of the
system is memorised when the
ignition is switched off.
Once activated, rear parking assist is
ready to operate when reverse gear
is engaged and ignition is switched
on.
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 75.
If the vehicle stops for more than
3 seconds in a forward gear, if
automatic transmission is in P
Driving and operating141position or if no further obstacles are
detected, no acoustic warning signals
are given.
Deactivation
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 e.
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 and a warning
chime sounds.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.
142Driving and operatingAdvanced 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 75.
Advanced parking assist can only be activated when driving forwards.
Advanced parking assist is always
combined with front-rear parking assist.
The system has six ultrasonic parking
sensors each in both the rear and
front bumper.
Entry into a parallel parking slot
Activation
Slow down the vehicle speed below
30 km/h.
To search for a parking slot, activate
the system in the Info Display 3 75.
Select the parallel parking slot menu.
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.
The system will not identify slots that are clearly smaller or larger than the
vehicle.
When a free slot is detected, a visual
feedback on the Info Display and a
first acoustic signal are given. Drive
slowly forwards. When the second
acoustic signal is given, stop the
vehicle, select reverse gear, release
the steering wheel and start moving
slowly. A visual feedback is given on
the Info Display.
Driving and operating143
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
Slow down the vehicle speed below
30 km/h.
To search for a parking slot, activate
the system in the Info Display 3 75.
Select the perpendicular parking slot
menu.
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 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.
During the parking manoeuvre, the
system is automatically deactivated
once the rear of the vehicle is within
50 cm of an obstacle.
Exiting a parallel parking slot
Activation
When exiting a parallel parking slot,
activate the system in the Info Display 3 75.