Driving and operating165Automatic release:● Parking brake releases automatically after moving off.
● j extinguishes in the
instrument cluster and a display message pops up to confirm the
release.
If the vehicle is equipped with an
automatic transmission and the brake
is not released automatically, make
sure the front doors are correctly
closed.Deactivation of automatic operation 1. Start the engine.
2. If the parking brake is released, apply the parking brake pulling the
switch j.
3. Take your foot off the brake pedal.
4. Press the switch j for at least
10 s and maximum 15 s.
5. Release the switch j.
6. Press and hold the brake pedal. 7. Pull the switch j for 2 s.
The deactivation of the automatic operation of the electric parking brake
is confirmed by o illuminating in theinstrument cluster 3 106 . 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 3 117.
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 2s. The brakes release
automatically as soon as the vehicle
begins to accelerate.
Driving and operating177Resuming stored speedMove the thumb wheel to RES/+ at a
speed above 30 km/h. The adaptive
cruise control is activated with the
stored set speed.
Taking over the speed limit from
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 taken over as new set speed
for the adaptive cruise control.
With the 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 3 118.
If the adaptive cruise control is active, the recognised speed limit will be
displayed in the Driver Information
Centre and MEM illuminates.In the Driver Information Centre,
speed limit sign is shown in the
display and MEM illuminates for a few
seconds.
Press MEM on the steering wheel to
request saving of the suggested
speed.
Press MEM on the steering wheel
once more to confirm and save the
new speed setting.
This speed limit is now the new set
speed of the adaptive cruise control.
Adaptive cruise control on
vehicles with automatic
transmission
For vehicles with automatic
transmission, adaptive cruise control allows to maintain the selected
distance behind a stopping vehicle until a complete stop is reached.
If the system has stopped your
vehicle behind another vehicle, then
the set speed is replaced by a green
control indicator .. This symbol
notifies, that the vehicle is hold
automatically in stop position.If the stopped vehicle ahead was
stopped for a longer time and then
begins to move forward, the green
illuminated vehicle ahead control
indicator . will flash and a warning
chime will sound as a reminder to
check traffic before resuming.
When the vehicle ahead drives away,
press the accelerator pedal until
30 km/h and then move the thumb
wheel to SET- or RES+ to resume
adaptive cruise control. If the vehicle
stays stopped for more than five
minutes or if the driver's door is
opened and the driver's seat belt is
unfastened, then the electric parking
brake is applied automatically to hold the vehicle. Control indicator m will
illuminate. To release electric parking
brake, press the accelerator pedal.
Electric parking brake 3 163.9 Warning
When the system is deactivated or
cancelled, the vehicle will no
longer be held at a stop and can
Driving and operating179● The electric parking brake isapplied.
● The Traction Control system or Electronic Stability Control is
deactivated or operating.
● The selector lever of automatic transmissions is neither in D nor
in M.
● A fault is detected in the Electronic Stability Control.
Switching off the system
Press C, the adaptive cruise control
mode is disabled and the adaptive
cruise control indication extinguishes
in the Driver Information Centre.
Pressing ß to activate the speed
limiter deactivates adaptive cruise
control.
Switching off the ignition deletes the
stored set speed.
Driver's attention ● Use the adaptive cruise control carefully on bends or mountain
roads, as it can lose the vehicle
ahead and needs time to detect it again.● Do not use the system on slippery roads as it can create
rapid changes in tyre traction
(wheel spinning), so that you
could lose control of the vehicle.
● Do not use the system when the spare wheel is in use.
System limits9 Warning
The system's automatic brake
force does not permit hard braking and the braking level may not be
sufficient to avoid a collision.
● After a sudden lane change, the system needs a certain time to
detect the next preceding
vehicle. So if a new vehicle is
detected, the system may
accelerate instead of braking.
● The adaptive cruise control does ignore the oncoming traffic.
● The adaptive cruise control does not consider pedestrians and
animals for braking and driving
off.
● The adaptive cruise control considers stopped vehicles only
at low speed.
● Do not use the adaptive cruise control when towing a trailer.
● Do not use the adaptive cruise control on roads with an incline ofmore than 10%.
Bends
The adaptive cruise control calculates
a predicted path based on the
centrifugal force. This predicted path
considers the current bend
characteristic, but cannot consider a
future bend change. The system may lose the current vehicle ahead or
consider a vehicle which is not in the
actual lane. This can happen when
entering or exiting a bend or if the
bend gets stronger or weaker. If it no
188Driving and operating
Additionally, the distance to rear and
front obstacles is displayed by
changing distance lines in the Info Display 3 113.
If the vehicle stops for more than
three seconds in a forward gear, if
automatic transmission is in P 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 ¼.
Graphic Info Display: The system is
switched off when the LED in the
parking assist button ¼ is illuminated.
Colour Info Display: Deactivate the
parking assist in the vehicle
personalisation 3 118.
Front-rear-lateral parking assist The front-rear-lateral parking parking
assist measures the distance
between the vehicle and obstacles in
front, behind and at the sides of the
vehicle. It informs and warns the
driver by giving acoustic signals and
display indication.
The system operates with ultrasonic parking sensors in the rear and front
bumper and on the flanks of the
vehicle.
Activation
In addition to the rear parking assist
and the front-rear assist, the front-
rear-lateral parking assist is triggered
when the system detects fixed
obstacles located to one or both sides
of the vehicle.Graphic Info Display: The system is
ready to operate when the LED in the parking assist button ¼ is not
illuminated.
Colour Info Display: Activate the
parking assist is in the vehicle
personalisation 3 118.
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.
Driving and operating189
Additionally, the distance to rear, front
and lateral obstacles is displayed by
changing distance lines in the Colour
Info Display 3 113.
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 ¼.
Graphic Info Display: The system is
switched off when the LED in the
parking assist button ¼ is illuminated.
Colour Info Display: Deactivate the
parking assist in the vehicle
personalisation 3 118.
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.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.
Driving and operating193●after ten manoeuvres for entering
or exiting a parallel parking slot
● on opening a door or the load compartment
● if one of the front wheels encounters an obstacle
● parking manoeuvre successfully ended
Deactivation by the driver or by the
system during manoeuvring will be
indicated on the display. Additionally,
an acoustic signal sounds.
The system is switched off
automatically when towing an
electrically connected trailer, bicycle
carrier, etc.
Contact your dealer to switch off the
system for a prolonged period.
Fault
In the event of a fault, a message is
displayed in the Colour Info Display,
accompanied by an acoustic signal.
In the event of a fault in the power
steering, C illuminates and 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.
Note
It is possible that the sensor detects a non-existing object caused by
echo disturbance from external
acoustic 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
Driving and operating195Operation 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 ● the sensors are not covered by mud, ice or snow
● the warning zones in the door mirrors or the detection zones on
front and rear bumper ar not
covered with adhesive labels or
other objectsNo 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 a sharp 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 3 118. 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 C and a display
message. Have the cause of the fault remedied by a workshop.
Passenger side camera
The passenger side camera monitors the side of the vehicle.
Driving and operating201
Additionally the opening radius of the
rear doors are shown in the rear view display.
Switching off
The rear view camera is switched off
when the rear view display is
switched off.
System limitationsThe rear view camera may not
operate properly when:
● the surrounding is dark
● the beam of headlights is shining
directly into the camera lenses
● 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
● the vehicle is towing an electrically connected trailer,
bicycle carrier, etc.
● the vehicle had a rear end accident
● there are extreme temperature changes
Lane keep assist
Lane keep assist helps to avoid
crashes due to unintentional lane
departures. A front camera located at the top of the windscreen observes
the lane markings between which the
vehicle is driving. If the vehicle
approaches a lane marking, the
steering wheel is gently turned to
position the vehicle back into the lane. The driver will then notice a turning
movement of the steering wheel. Turn
steering wheel in same direction, ifsystem steers not sufficient. Turn
steering wheel gently into opposite
direction, if lane change is intended.
When the system steers to correct the trajectory of the vehicle, a flashes
yellow in the instrument cluster.
A warning message in the Driver
Information Centre accompanied by a warning chime alerts the driver when
immediate driver´s action is required.
Unintended lane departure is not
assumed by the system when the turn lights are operated and during 20 s
after turn lights have been switched
off.
Note
The system may be switched off if it
detects lanes which are too narrow,
too wide or too curved.
Following preconditions have to be
fullfilled:
● vehicle speed must be between 65 km/h and 180 km/h
● the driver must hold the steering wheel with both hands