04 Comfort and driving pleasure
Adaptive cruise control*
04
174* Option/accessory, for more information, see Introduction.
NOTE
If any cruise control button is held
depressed for more than approx. 1 minute
then cruise control is disengaged. The
engine must be switched off in order to reset
cruise control.
In certain situations, cruise control cannot
be activated. Then the display shows
Cruise control Unavailable, see
page 179.
Set time intervalDifferent time intervals to the
vehicle in front can be
selected and shown in the
display as 1-5 horizontal lines
- the more lines the longer the
time distance. One line corre-
sponds to approximately
1 second, 5 lines approximately 2.5 seconds.
The time interval is increased or decreased
with the steering wheel keypad's thumbwheel
(or the buttons
/ for cars without Speed
limiter).
At low speed, when the distances are short, the
adaptive cruise control increases the time
interval slightly.The adaptive cruise control allows the time
interval to vary noticeably in certain situations
in order to allow the car to follow the vehicle in
front smoothly and comfortably.
Note that a short time interval only allows the
driver a short time to react and take action if
any unforeseen traffic problem should arise.
The number of lines for the
selected time interval is
shown during the setting itself
and for several seconds after-
wards. Then a smaller scale
version of the symbol is
shown to the right of the dis-
play. The same symbol is also shown when
Distance Alert is activated, see page 181.
NOTE
Only use the time interval that is allowed in
accordance with local traffic regulations.
If cruise control does not seem to react to
activation the reason may be that the time
interval to the closest vehicle prevents an
increase in speed.
The higher the speed, the longer the calcu-
lated distance in metres for a specific time
interval.
Temporary deactivation - standby mode
Press the steering wheel button to tempo-
rarily disengage the cruise control and set it in
standby mode - set speed is shown in brackets
in the display, e.g.
(100).
Keypad without Speed limiter
Press the steering wheel button to tempo-
rarily disengage cruise control and set it in
standby mode.
Standby mode due to driver interventionCruise control is temporarily disengaged and
set in standby mode if:
•the foot brake is used
•the clutch pedal is depressed for longer
than 1 minute4
•the gear selector is moved to N position
(automatic gearbox)
•the driver maintains a speed higher than
the set speed for longer than 1 minute
The driver must then regulate the speed.
A temporary increase in speed with the accel-
erator pedal, e.g. during overtaking, does not
affect the cruise control setting - the car returns
to the last stored speed when the accelerator
pedal is released.
4Disengaging and selecting a higher or lower gear does not involve standby mode.
ProCarManuals.com
04 Comfort and driving pleasure
Adaptive cruise control*
04
* Option/accessory, for more information, see Introduction.175
Automatic standby modeAdaptive cruise control is dependent on other
systems e.g. stability and traction control
(DSTC). If any of these systems stop working
then cruise control is automatically deacti-
vated.
In the event of automatic deactivation a signal
will sound and the message
Cruise control
Cancelled is shown in the display. The driver
must then intervene and adapt the speed and
distance to the vehicle ahead.
An automatic deactivation can be due to:
•engine speed is too low/high
•speed falls below 30 km/h5
•wheels lose traction
•brake temperature is high
•the radar sensor is covered e.g. by wet
snow or heavy rain (radar waves blocked).
Resume set speedCruise control in standby mode is re-activated
with one press on the steering wheel button
- the speed is then set to the last stored
speed.
NOTE
A significant increase in speed may arise
after the speed has been resumed with .
DeactivateThe cruise control is switched off with the
steering wheel button
. The set speed is
cleared and cannot be resumed with the
button.
Keypad without Speed limiterThe cruise control is switched off with the
steering wheel button
in standby mode or
with one long press in active mode. The set
speed is cleared and cannot be resumed with
the
button.
Queue Assist ACC and automatic
gearbox*
In cars with automatic gearbox the adaptive
cruise control has more functions than in cars
with manual gearbox.
Note that the lowest programmable speed for
the cruise control is 30 km/h - even though the
cruise control is capable of following another
vehicle down to a standstill, a lower speed
cannot be selected.The following functions are available:
Extended speed range
NOTE
In order to activate the cruise control the
driver's door must be closed and the driver
must be wearing the seatbelt.
•With the automatic gearbox the cruise con-
trol can follow another vehicle within the
range of 0-200 km/h - right down to sta-
tionary and up to 200 km/h.
NOTE
Activation of the cruise control below
30 km/h requires a vehicle in front within a
reasonable distance.
For shorter stops in connection with inching in
slow traffic or at traffic lights driving is auto-
matically resumed if the stops do not exceed
about 3 seconds - if it takes longer before the
car in front starts moving again then the cruise
control is set in standby mode. The driver must
then re-activate the cruise control in one of the
following ways:
•Press the steering wheel button .
5Does not apply to cars with automatic gearbox ("Queue Assist") - they manage right down to stationary.
ProCarManuals.com
04 Comfort and driving pleasure
Collision Warning & Pedestrian Detection with Auto Brake*
04
190* Option/accessory, for more information, see Introduction.
Activating/deactivating warning signalsThe warning lamp is activated automatically
when the engine is started if the system is
switched on.
The warning sound can be activated/deacti-
vated separately using the options for
On orOff in the menu system MY CAR under
Settings
Car settingsDriver support
systems
Warning sound if risk of
collision.
Set warning distanceThe warning distance regulates the distance at
which the visual and acoustic warnings are
deployed. Select one of the options from
Long, Normal or Short in the menu system
MY CAR under Settings
Car settings
Driver support systemsCollision
Warning
Warning distance.
The warning distance determines the system's
sensitivity. Warning distance
Long provides an
earlier warning. First test with Long and if this
setting produces too many warnings, which
could be perceived as irritating in certain sit-
uations, then change to warning distance
Normal.
Only use warning distance
Short in excep-
tional cases, e.g. for dynamic driving.
NOTE
When the adaptive cruise control is in use
the warning lamp and warning sound will be
used by the cruise control even if the colli-
sion warning system is switched off.
The collision warning system warns the
driver in the event of a risk of a collision, but
the function cannot shorten driver reaction
time.
In order for the collision warning system to
be effective, always drive with the Distance
Alert set at time interval 4 – 5. see
page 181.
NOTE
Even if the warning distance has been set toLong then in certain situations warnings
could be perceived as being late. E.g. in the
event of large differences in speed or if vehi-
cles in front brake heavily.
Checking settingsThe settings required can be controlled on the
centre console display screen. Search with the
menu system MY CAR under Settings
Car
settings
Driver support systems
Collision Warning, see page 142.
Limitations
The collision warning system is active from and
including approx. 4 km/h.
The visual warning signal may be difficult to
notice in the event of strong sunlight, reflec-
tions, when sunglasses are being worn or if the
driver is not looking straight ahead. The warn-
ing sound should therefore always be acti-
vated.
On slippery road surfaces the braking distance
is extended, which may reduce the capacity to
avoid a collision. In such situations the ABS
and DSTC systems will provide best possible
braking force with maintained stability.
NOTE
The visual warning signal can be temporarily
disengaged in the event of high passenger
compartment temperature caused by
strong sunlight for example. If this occurs
then the warning sound is activated even if
it is deactivated in the menu system.
•Warnings may not appear if the dis-
tance to the vehicle in front is small or if
steering wheel and pedal movements
are large, e.g. a very active driving style.
ProCarManuals.com
04 Comfort and driving pleasure
Driver Alert System – DAC*
04
* Option/accessory, for more information, see Introduction.195 General information on Driver Alert
System
The Driver Alert System is intended to assist
drivers whose driving ability is deteriorating or
who are inadvertently leaving the lane they are
driving on.
The Driver Alert System consists of two differ-
ent functions, which can either be switched on
at the same time or individually:
•Driver Alert Control (DAC)
•Lane Departure Warning (LDW), see
page 198.
A switched-on function is set in standby mode
and is not activated automatically until speed
exceeds 65 km/h.
The function is deactivated again when speed
decreases to below 60 km/h.
Both functions use a camera which is depend-
ent on the lane having side markings painted
on each side.
WARNING
The Driver Alert System does not work in all
situations but is instead only intended to be
of supplementary assistance.
The driver always has ultimate responsibility
that the car is driven safely.
General information on Driver Alert
Control - DAC
The function is intended to attract the driver's
attention when he/she starts to drive less con-
sistently, e.g. if he/she becomes distracted or
starts to fall asleep.
A camera detects the side markings painted on
the carriageway and compares the section of
the road with the driver's steering wheel move-
ments. The driver is alerted if the vehicle does
not follow the carriageway evenly.
NOTE
The camera sensor has certain limitations,
see page 191.
The objective for DAC is to detect slowly dete-
riorating driving ability and it is primarily
intended for major roads. The function is not
intended for city traffic.
In some cases driving ability is not affected
despite driver fatigue. In which case there may
not be any warning issued for the driver. For
this reason it is always important to stop and
take a break in the event of any signs of driver
fatigue, irrespective of whether or not DAC
issues a warning.
NOTE
The function must not be used to extend a
driving stint. Always plan breaks at regular
intervals and ensure that you are fully
rested.
LimitationIn some cases the system may issue a warning
despite driving ability not deteriorating, for
example:
•if the driver tests the LDW function.
•in strong side winds.
•on rutted road surfaces.
ProCarManuals.com
04 Comfort and driving pleasure
Driver Alert System – DAC*
04
196* Option/accessory, for more information, see Introduction.
Operation
Some settings are made from the centre con-
sole display screen and its menu system. For
information on how the menu system is used,
see page 142.
The current status can be checked on the trip
computer display with the left-hand stalk
switch.
Thumbwheel. Turn until the display showsDriver
Alert. On the second line, the options Off,Standby <65 km/h, Unavailable or Level
mark are shown.
READ confirms or clears a warning in the
memory.
Activating Driver Alert ControlUsing the centre console display screen with
its menu system MY CAR, search and locate
Car settings
Driver Alert. Select the On
option. For information on how the menu sys-
tem is used - see page 142.
The function is activated when speed
exceeds 65 km/h and remains active
as long as the speed is over
60 km/h.
The display shows a level mark with 1-5 bars,
where a low number of bars indicates incon-
sistent driving style. A high number of bars
indicates stable driving.
If the vehicle is driven inconsistently then the
driver is alerted by an acoustic signal as well as
the text message
Driver Alert Time for a
break. The warning is repeated after a time if
driving ability does not improve.
WARNING
An alarm should be taken very seriously, as
a sleepy driver is often not aware of his/her
own condition.
In the event of an alarm or a feeling of tired-
ness; stop the car in a safe manner as soon
as possible and rest.
Studies have shown that it is equally as dan-
gerous to drive while tired as it is under the
influence of alcohol.
Symbols and messages in the display
SymbolMessageSpecification
Driver Alert OFFFunction not switched on.
Driver Alert Standby
<65 km/hThe function is set in standby mode due to speed being lower than 65 km/h.
ProCarManuals.com
04 Comfort and driving pleasure
Driver Alert System - LDW*
04
198* Option/accessory, for more information, see Introduction.
General information on Lane Departure
Warning - LDW
The function is intended to reduce the risk for
single-vehicle accidents – accidents where, in
certain situations, the vehicle leaves the car-
riageway and is in danger of driving either into
a ditch or into oncoming traffic.
LDW consists of a camera that detects the side
markings painted on the carriageway. The
driver is alerted by an acoustic signal if the
vehicle crosses a side marking.
Operation and function
The function is switched on or off by means of
a switch on the centre console. An indicator
lamp in the button illuminates when the func-
tion is switched on.
The trip computer display shows
Lane Depart
Warn Standby <65 km/h when the function is
in standby mode due to speed being below 65
km/h.
The LDW function is activated automatically
from standby mode after the camera has scan-
ned in the carriageway's side markings and
speed exceeds 65 km/h. The trip computer
display then shows
Lane Depart Warn
Available.If the camera can no longer detect the carria-
geway's side markings the display shows
Lane Depart Warn Unavailable.
If speed decreases to below 60 km/h then the
function resumes standby mode and the dis-
play shows
Lane Depart Warn Standby
<65 km/h.
If the vehicle crosses the left or right-hand side
marking of the carriageway without due cause
then the driver is alerted by an acoustic signal.
No warning is given in the following situations:
•Direction indicators activated
•The driver has his/her foot on the brake
pedal1
•In the event of the accelerator pedal being
depressed rapidly1
•In the event of rapid steering wheel move-
ments1
•In the event of a sudden turn so that the car
rolls.
The camera sensor also has certain limitations.
For more information, see page 191.
1A warning is still given when Increased sensitivity is selected, see page 200.
ProCarManuals.com
04 Comfort and driving pleasure
Driver Alert System - LDW*
04
* Option/accessory, for more information, see Introduction.199
NOTE
The driver is only warned once each time the
wheels cross a line. So there is no acoustic
alarm when there is a line between the car's
wheels.
Symbols and messages in the display
SymbolMessageSpecification
Lane departure warning
On/OffThe function is switched on/off.
Shown at switch-on/off.
The text disappears after 5 seconds.
Lane Depart Warn Standby
<65 km/hThe function is set in standby mode due to speed being lower than 65 km/h.
Lane Depart Warn Unavail-
ableThe carriageway does not have clear side markings or the camera sensor is temporarily disengaged.
Read about the limitations of the camera sensor, see page 191.
Lane Depart Warn Availa-
bleThe function scans the carriageway's side markings.
ProCarManuals.com
04 Comfort and driving pleasure
Park assist camera*
04
204* Option/accessory, for more information, see Introduction.
General
The parking camera is an assist system and is
activated when reverse gear is engaged (can
be changed in the settings menu, see
page 142).
The camera image is shown on the centre con-
sole's screen.
WARNING
•The parking camera serves as an aid. It
does not relieve the driver of responsi-
bility when reversing.
•The camera has blind spots, where
obstacles cannot be detected.
•Be aware of people and animals in the
vicinity of the car.
CAM button location.
The camera shows what is behind the car and
if something appears from the sides.
The camera shows a wide area behind the car
and part of the bumper and any towbar.
Objects on the screen may appear to tilt slightly
- this is normal.
NOTE
Objects on the display screen may be closer
to the car than they appear to be on the
screen.
If another view is active the parking camera
system takes over automatically and the cam-
era image is displayed on the screen.When reverse gear is engaged two unbroken
lines are shown graphically which illustrate
where the car's rear wheels will roll with the
current steering wheel angle, this facilitates
tight parking, reversing into tight spaces and
for hitching a trailer. The car's approximate
exterior dimensions are also illustrated by two
dashed lines, the park assist lines can be deac-
tivated in the settings menu.
If the car is also equipped with parking assis-
tance sensors* then their information is dis-
played graphically as coloured fields in order to
illustrate the distance to detected obstacles,
see page 206.
The camera is active approx. 5 seconds after
reverse gear has been disengaged or until the
car's speed exceeds 10 km/h.
Camera location next to the opening handle.
ProCarManuals.com