Instruments and controls859Warning
Stop. Do not continue your
journey. Consult a workshop.
Illuminates when the manual parking
brake is applied and ignition is
switched on 3 138.
Brake fluid 3 179.
Parking brake m illuminates red.
Illuminates when the parking brake is
applied and ignition is switched on
3 138.
Antilock brake system
(ABS)
u illuminates yellow.
Illuminates for a few seconds after the ignition is switched on. The system is
ready for operation when the control
indicator extinguishes.
If the control indicator does not go out after a few seconds, or if it illuminates while driving, there is a fault in the
ABS. The brake system remains
operational but without ABS
regulation.
Antilock brake system 3 137.
Gear shifting Manual transmission
R with the number of a higher gear is
indicated, when upshifting into this gear is recommended for fuel saving
reasons.
Automatic transmission manual
mode
R is indicated, when upshifting is
recommended for fuel saving
reasons.
Lane departure warning ) flashes yellow when the system
recognises an unintended lane
change.
Lane departure warning 3 163.
Electronic Stability Control and Traction Control system
b illuminates or flashes yellow.
Illuminates
A fault in the system is present.
Continued driving is possible. Driving
stability, however, may deteriorate
depending on road surface
conditions.
Have the cause of the fault remedied
by a workshop.
94Instruments and controls
Adjust position of head-up display
image
1. Adjust the driver's seat.
2. Start the engine.
3. Press ä or å to centre the image.
It can only be adjusted up and
down, not side to side.
9 Warning
If the head-up display image is too
bright or too high in your field of
view, it may obstruct your view
when it is dark outside. Be sure to
keep the head-up display image dim and placed low in your field of
view.
Adjust brightness
The head-up display image will
automatically dim and brighten to compensate for outside lighting.
Brightness can also be adjusted
manually as needed:
Press e to brighten the display. Press
æ to dim the display.
The image can temporarily illuminate
depending on angel and position of
sunlight.
Switching off
Press æ and hold to turn the head-up
display off.
Language Preferred language can be set invehicle personalisation menu 3 96.
Units Units can be changed in vehicle
personalisation menu 3 96.
Care of head-up display
Clean the projection plane of the
head-up display with a soft cloth
sprayed with glass cleaner. Wipe the
lens gently, then dry it.
System limitationsHead-up display may not operate
properly when:
● The lens in the instrument panel is covered by objects or not
clean.
● Display brightness is too dim or bright.
● Image is not adjusted to the proper height.
● The driver wears polarised sunglasses.
If the head-up image is not correct for
other reasons, contact a workshop.
Instruments and controls95Vehicle messages
Messages are indicated in the Driver
Information Centre, in some cases
together with a warning chime.
Press SET/CLR to confirm a
message.
Vehicle and service messages The vehicle messages are displayed
as text. Follow the instructions given
in the messages.
Messages in the
Colour Info Display
Some important messages may
appear additionally in the
Info Display. Some messages only
pop-up for a few seconds.
Warning chimes
If several warnings appear at the same time, only one warning chime
will sound.
When starting the engine or whilst driving
The warning chime regarding not
fastened seat belts has priority over
any other warning chime.
● If a seat belt is not fastened.
● If a door or the tailgate is not fully
closed when starting off.
● If a certain speed is exceeded with parking brake applied.
● If cruise control deactivates automatically.
● If a programmed speed or speed
limit is exceeded.● If a warning message appears in the Driver Information Centre.
● If the electronic key is not in the passenger compartment.
● If the parking assist detects an object.
● If an unintended lane change occurs.
● If the exhaust filter has reached the maximum filling level.
When the vehicle is parked and / or the driver's door is opened
● With exterior lights on.
During an Autostop ● If the driver's door is opened.● If any condition for an autostart is
not fulfilled.
Driving and operating147In the following cases, forward
collision alert may not detect a vehicle
ahead or sensor performance is
limited:
● driving on winding or hilly roads
● driving in the dark
● 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 3 145.
Front pedestrian protection 3 149.
The feature uses various inputs (e.g.
camera 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.
Functionality
Active emergency braking is
equipped with a front camera and
operates in forward gear in the range
between walking speed and 53 mph.
The system detects stationary
vehicles only if the speed does not
exceed 50 mph.
A precondition is that forward collision
alert with front camera system is not
deactivated in the vehicle
personalisation menu 3 96.
The system includes: ● emergency automatic braking● forward looking brake assist
● forward collision alert
● front pedestrian protection
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
148Driving and operatingsituation, the vehicle may
automatically brake moderately or
hard. This front automatic braking can
only occur if a vehicle or a pedestrian ahead is detected.
Forward collision alert 3 145.
Front pedestrian protection 3 149.
Emergency automatic braking may slow the vehicle to a complete stop to
try to avoid a potential crash.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 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.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.
Forward collision alert 3 145.
Front pedestrian protection 3 149.
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 in fog,
rain, or snow
● driving in the dark
● windscreen damaged or stickered
Driving and operating163Guidelines
The vertical lines represent the width
of the vehicle without mirrors and the
general direction of the vehicle. The
horizontal lines represent a distance of about 30 cm, 1m and 2 m beyond
the rear bumper. The crossing curves
represent the maximum turning circle.
Deactivation of guidelines
Guidelines can be deactivated in the
Info Display. Select Settings I Vehicle
I Collision detection I Rear view
camera guide lines I § .
Info Display 3 91.
Vehicle personalisation 3 96.
Switching off
The camera is switched off when a
certain forward speed is exceeded or
if reverse gear is disengaged for
approx. 10 seconds.
System limitations
The rear view camera may not
operate properly when:
● The surrounding is dark.
● The beam of headlights is shining
directly into the camera lenses.
● During nighttime driving.
● Weather limits visibility, such as fog, rain, or snow.
● The camera lenses are blocked by snow, ice, slush, mud, dirt.Clean the lense, rinse with water,
and wipe with a soft cloth.
● The tailgate will be opened.
● A trailer or bike carrier is attached
to the trailer hitch.
● The vehicle had a rear end accident.
● There are extreme temperature changes.Lane departure warning
The lane departure warning systemobserves the lane markings between
which the vehicle is driving via a front camera. The system detects lane
changes and warns the driver in the
event of an unintended lane change
via visual and acoustic signals.
Criteria for the detection of an
unintended lane change are:
● no operation of turn lights
● no brake pedal operation
● no active acceleration
If the driver is active, no warning will
be issued.
164Driving and operatingActivation
The lane departure warning system isactivated by pressing ½. The system
is switched on when the LED in the
button is not illuminated.
The system is only operable at
vehicle speeds above 37 mph and if
lane markings are available.
When the system recognises an
unintended lane change, the control
indicator ) flashes yellow.
Simultaneously a chime sound is
activated.
Deactivation
The system is deactivated by
pressing ½, the LED in the button
illuminates.
At speeds below 37 mph the system
is inoperable.
Fault
In the event of a fault, C appears in
the instrument cluster, accompanied
by a display message. Seek the
assistance of a workshop.
The system cannot operate when no
lane marking is detected.
System limitations The system may not operate properly
when:
● vehicle speed is below 37 mph● driving on winding or hilly roads
● driving in the dark
● weather limits visibility, such as fog, rain, or snow
● the camera is blocked by snow, ice, slush, mud, dirt, windscreen
damage or affected by foreign
items, e.g. stickers
● the sun is shining directly into the
camera lens
● close vehicles ahead
● banked roads
● road edges
● roads with poor lane markings
● sudden lighting changes
Driver alert9 Warning
The system cannot replace the
need for vigilance on the part of
the driver. Taking a break is
recommended as soon as feeling tired or at least every two hours.
Do not take the steering wheel
when feeling tired.
Driving and operating165Activation or DeactivationThe system can be activated or
deactivated in the vehicle
personalisation 3 96.
The state of the system stays in
memory when the ignition is switched
off.
Driving time alert
The driver gets notified by a pop-up reminder symbol € in the Driver
Information Centre simultaneously with an acoustic alert if the driver has not taken a break after 2 hours of
driving at a speed above 40 mph. The
alert is repeated hourly until the
vehicle is stopped, no matter how
vehicle speed evolves.
The counting of driving time alert is
reset when the ignition has been
switched off for a few minutes.
Driver drowsiness detection The system monitors the driver's level
of vigilance. A camera in the
windscreen detects variations in
trajectory compared to the lanemarkings. This system is particularly
suited for a speed higher than
40 mph.
If the trajectory of the vehicle
suggests a certain level of
drowsiness or inattention by the
driver, the system triggers the first
level of alert. The driver is notified by
a message and an audible signal is
given.
After three first level alerts, the
system triggers a new alert with a message, accompanied by a more
pronounced audible signal.
In certain driving conditions (poor
road surface or strong winds), the
system may give alerts independent of the driver's level of vigilance.
The driver drowsiness detection is
reinitialised when the ignition has
been switched off for a few minutes or the speed remains below 40 mph for
a few minutes.System limitations
The system may not operate properly
when:
● dazzle caused by headlights of an oncoming vehicles, low sun,
reflections on damp roads
● driving on winding, hilly or narrow
roads
● driving in the dark
● weather limits visibility, such as fog, rain, or snow
● the camera is blocked by snow, ice, slush, mud, dirt
● the windscreen is damaged or affected by foreign items, e.g.
stickers
● the sun is shining directly into the
camera lens
● close vehicles ahead
● banked roads
● road edges
● roads with poor lane markings
● multiple lane markings due to roadworks
● sudden lighting changes