Driving and operating175Using a camera at the top of thewindscreen, this system detects and
reads speed limit and end of speed
limit signs. The system also takes account of information on speed limits
from the navigation map data.
The function can be deactivated or
activated in the personalisation menu 3 123.
If the cruise control is active, the
recognised speed limit will be
displayed in the Driver Information
Centre and MEM illuminates.
The displayed information depends
on the Driver Information Centre
version.
In the Driver Information Centre, the
speed limit sign is shown in the
display and MEM illuminates for a few
seconds.
Press MEM to request saving of the
suggested speed.
Press MEM once more to confirm and
save the new speed setting.
This speed is the new value for the
cruise control.Exceeding the set speed
Vehicle speed can be increased by
depressing the accelerator pedal. When the accelerator pedal is
released, the previously stored speed
is resumed.
Deactivation of the functionality
Press button to deactivate the
functionality. The cruise control is in
pause mode and a message is
displayed. The vehicle is driven
without cruise control.
Cruise control is deactivated, but not
switched off. Last stored speed
remains in memory for later speed
resume.
Cruise control is deactivated
automatically:
● The brake pedal is depressed.
● The clutch pedal is depressed.
● Vehicle speed is below 25 mph.
● The Traction Control system or Electronic Stability Control is
operating.
● The selector lever is in N
(automatic transmission) / the first or second gear (manual
transmission).
178Driving and operating
Selecting a preset speed
Preset speed values can be selected
from a list in the Info Display.
Press MEM to display the preset
speeds in the Info Display.
Select the requested speed by
touching the relevant icon. This
speed is the new value for the speed
limiter.
Memorising of preset speeds 3 123
Adopting speed by the traffic sign
assistant
The intelligent speed adaptation
informs the driver when a speed limit
is detected by the traffic sign
assistant. The detected speed limit
can be used as new value for the
speed limiter.
Using a camera at the top of the
windscreen, this system detects and
reads speed limit and end of speed
limit signs. The system also takes
account of information on speed limits from the navigation map data.
The function can be activated or
deactivated in the personalisation
menu 3 123.
If the speed limiter is active, the
recognised speed limit will be
displayed in the Driver Information
Centre and MEM illuminates.
The displayed information depends
on the Driver Information Centre
version.
In the Driver Information Centre, the
speed limit sign is shown and MEM
illuminates for a few seconds.
Press MEM to request saving of the
suggested speed.
Press MEM once more to confirm and
save the new speed setting.
This speed is the new value for the
speed limiter.Exceeding the speed limit
In the event of an emergency, it is
possible to exceed the speed limit by
depressing the accelerator pedal
firmly nearly to the final point.
Release the accelerator pedal and
the speed limiter function is
reactivated once a speed lower than
the limit speed is obtained.
Deactivation of the functionality
Press the button to deactivate the
functionality. The speed limiter is in
pause mode and a message is
displayed. The vehicle is driven
without speed limit.
180Driving and operatinglights to overtake a slower vehicle, theadaptive cruise control allows the
vehicle to temporarily approach the
vehicle ahead to help passing it.
However, the set speed will never be
exceeded.
If the vehicle ahead is moving too
slowly and the selected following
distance cannot be maintained
anymore, a warning chime is given
and a message is displayed in the
Driver Information Centre. The
message prompts the driver to take
back control of the vehicle. On
vehicles with automatic transmission,
the system can brake the vehicle until a full stop.
The adaptive cruise control can store
set speeds over 25 mph and 93 mph.
Additionally at least the third gear
must be engaged on manual
transmission, on automatic
transmission position D / A or the
second or a higher gear in position M must be selected.9 Warning
The complete driver attention is
always required while driving with adaptive cruise control. The driver stays fully in control of the vehicle
because the brake pedal and the accelerator pedal have priority
over any adaptive cruise control operation.
Switching on the system
The adaptive cruise control can be
switched on manually at a speed
between 25 mph and 93 mph.
A precondition is that adaptive cruise
control is not deactivated in the
vehicle personalisation menu 3 123.Turn to Cruise, the symbol Q and a
message are displayed in the Driver Information Centre. The system is still not active.
Driving and operating181Activation of the functionality bysetting the speed
Setting the speed manually
Accelerate to the desired speed and
press SET/+ or SET/- . The current
speed is stored and maintained.
Accelerator pedal can be released.
The preset speed can then be
changed by pressing SET/+ to
increase or SET/- to decrease the
speed. Short press changes speed in
small steps, long press in large steps.
Speed value is indicated in the Driver Information Centre.
Selecting a preset speed
Preset speed values can be selected
from a list in the Info Display.
Press MEM to display the preset
speeds in the Info Display.
Select the requested speed by
touching the relevant icon. This
speed is the new value for the cruise
control.
Memorising of preset speeds 3 123
Adopting the speed by the speed limit
recognition
The intelligent speed adaptation
informs the driver when a speed limit
is detected by the speed limit
recognition. The detected speed limit
can be used as new value for the
cruise control.
Using a camera at the top of the
windscreen, this system detects and
reads speed limit and end of speed
limit signs. The system also takes
account of information on speed limits from the navigation map data.
The function can be deactivated or
activated in the personalisation menu
3 123.
If the cruise control is active, the
recognised speed limit will be
displayed in the Driver Information
Centre and MEM illuminates.
The displayed information depends
on the Driver Information Centre
version.
In the Driver Information Centre, the
speed limit sign is shown in the
display and MEM illuminates for a few
seconds.
188Driving and operatingapplicable traffic rules, weather
and road conditions etc. at all
times.
Selecting the alert sensitivity
The alert sensitivity has to be set to
close, normal or distant in the vehicle personalisation menu 3 123.
The chosen setting will remain until it
is changed. The alert timing will vary
based on vehicle speed. The faster
the vehicle speed, the farther away
the alert will occur. Consider traffic
and weather conditions when
selecting the alert timing.
Deactivation The system can only be deactivated
by deactivating the active emergency
braking in the vehicle personalisation
3 123.
System limitations
Forward collision alert is designed to
warn on vehicles only, but may react
also to other objects.
In the following cases, forward
collision alert may not detect a vehicle ahead or sensor performance is
limited:
● driving on winding or hilly roads
● driving during nighttime
● weather limits visibility, such as fog, rain, or snow
● the sensor in the windscreen is blocked by snow, ice, slush, mud,dirt etc.
● the windscreen is damaged or affected by foreign objects, e.g.
stickers
Active 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 or the front pedestrian protection
alert.Forward collision alert 3 186
Front pedestrian protection 3 190
The feature uses various inputs (e.g.
camera sensor, radar 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.
Driving and operating189FunctionalityActive emergency braking is
equipped with a front camera and
operates in forward gear above
walking speed up to 53 mph. The
system detects stationary vehicles
only if the speed does not exceed
50 mph. Pedestrians are detected
only if the speed does not exceed
37 mph.
A precondition is that active
emergency braking is not deactivated
in the vehicle personalisation menu
3 123.
If deactivated, m illuminates in the
instrument cluster and a warning
message is displayed in the Driver
Information Centre.
If the system has been deactivated, it
is reactivated automatically the next
time the ignition is switched on.
The system includes: ● emergency automatic braking
● forward collision alert
● front pedestrian protectionEmergency 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 or a pedestrian
ahead is detected.
Forward collision alert 3 186
Front pedestrian protection 3 190
Below a speed of 19 mph, emergency automatic braking may slow down thevehicle to a complete stop. If the
speed exceeds 19 mph, emergency
automatic braking reduces the speed.
However, the driver must apply the
brake.Emergency automatic braking may
slow the vehicle to a complete stop to try to avoid a potential crash. If the
vehicle comes to a complete stop,
automatic braking is maintained for
up to 2 seconds.
● Automatic transmission: If the vehicle comes to a complete
stop, keep the brake pedal
depressed to prevent the vehicle
from starting off again.
● Manual transmission: If the vehicle comes to a completestop, the engine may stall.
Operation of the function may be felt
by a slight vibration in the brake
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
190Driving and operatingspeed range and only responds to
detected vehicles and
pedestrians.
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.
● Detecting a vehicle when weather limits visibility, such as infog, rain, or snow.
● Driving during nighttime.
● The windscreen is damaged or affected by foreign items, e.g.
stickers.
Complete attention is always required
while driving, and the driver 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 tyre chains are fitted
● 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 beendamaged
● if the brake lamps are not working
Fault
In case the system requires a service, m is illuminated in the instrument
cluster, a message is displayed in the
Driver Information Centre and an
audible signal is given.
If the system does not work as it
should do, vehicle messages are
displayed in the Driver Information
Centre.
Vehicle messages 3 122.
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 sensor in
the front bumper to detect a
pedestrian directly ahead in your path.
192Driving and operatingRear parking assist
The system warns the driver with
acoustic signals against potentially
hazardous obstacles behind the
vehicle in a distance range up to
50 cm while reverse gear is engaged.
The system operates with ultrasonic
parking assist sensors in the rear bumper.
Activation
Rear parking assist is activated when reverse gear is engaged and ignition
is switched on. This is confirmed by a
chime.Info Display without touchscreen
The system is ready to operate when
the LED in the parking assist button
é is not illuminated.Info Display with touchscreen
Activate the parking assist in the
vehicle personalisation 3 123.
Indication
Depending on which side of the
vehicle is closer to an obstacle,
acoustic warning signals in the
vehicle sound 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
3 119. When the obstacle is very
close, + for danger is displayed.
Deactivation
Info Display without touchscreen
Press é to deactivate the system
manually. The LED in the button
illuminates when the system is
deactivated.Info Display with touchscreen
Deactivate the parking assist in the
vehicle personalisation 3 123. The
state of the system