132Driving and operating
The rear parking assist makes
parking easier by measuring the
distance between the vehicle and
rear obstacles. It informs and warns
the driver by giving acoustic signals.
The system has four ultrasonic
parking sensors in the rear bumper.
Activation
When reverse gear is engaged, the
system is ready to operate
automatically.
An illuminated LED in the parking
assist button r indicates that the
system is ready to operate.
Indication
The system warns the driver with
acoustic signals against potentially
hazardous obstacles behind the
vehicle in a distance range up to
1.5 metre. The interval between the
sounds becomes shorter as the
vehicle gets closer to that obstacle.
When the distance is less than about
30 cm, the sound is continuous.
Deactivation
The system automatically switches
off when reverse gear is disengaged.
Manual deactivation is also possible
by pressing the parking assist button
r .
In both cases the LED in the button extinguishes.
Fault
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, the LED
in the button flashes for 3 seconds
and then extinguishes. Control
indicator r illuminates in the
instrument cluster 3 84 and a
message pops-up in the Driver
Information Centre.
Front-rear parking assist9 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.
Driving and operating133
The front-rear parking assist
measures the distance between the vehicle and obstacles in front and
behind the vehicle. The system gives acoustic signals and display
messages.
The system has six ultrasonic parking
sensors each in the rear and front
bumper.
It uses two different acoustic warning
signals for the front and rear
monitoring areas, each with a
different tone frequency.
Front-rear parking assist is always
combined with advanced parking
assist, see Advanced parking assist
section below.
Parking assist button and operation
logic
Front-rear parking assist and
advanced parking assist both use the same button for activation and
deactivation:
A brief press of button D activates
or deactivates the parking assist.
Long press of button D (approx. one
second) activates or deactivates the
advanced parking assist, see
separate description.
Button logic operates the systems by
pressing as follows:
■ If only front-rear parking assist is active, a brief press deactivates
front-rear parking assist.
■ If only front-rear parking assist is active, long press activates
advanced parking assist.
■ If only advanced parking assist is active, a brief press activates front-
rear parking assist.
■ If only advanced parking assist is active, long press deactivates
advanced parking assist.
■ If forward gear or neutral is selected, a brief press activates ordeactivates only front parking
assist.
■ If reverse gear is selected, a brief press activates or deactivates frontand rear parking assist.
134Driving and operating
Operation
When reverse gear is engaged, the
front and rear parking assist is ready
to operate.
An illuminated LED in the parking
assist button D indicates that the
system is ready to operate.
The front parking assist can also be activated at a speed up to 7 mph with
a brief press of the parking assist
button.
If the D button is switched on once
within an ignition cycle, the front
parking assist is deactivated at a speed above 7 mph. It will be
reactivated if vehicle speed has not
exceeded 16 mph beforehand. If
vehicle speed has exceeded 16 mph beforehand, front parking assist
remains deactivated when speed
drops below 7 mph.
When the system is deactivated, the
LED in the button extinguishes and
Park Assist Off pops-up in the Driver
Information Centre.
The system is deactivated
automatically when exceeding
16 mph.Indication
The system warns the driver with
acoustic signals against potentially
hazardous obstacles behind the
vehicle in a distance range up to
1.5 metres and in front up to
1.2 metres . 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 obstacles
is shown in the Driver Information
Centre 3 86 or, depending on the
version, on the Colour-Info-Display 3 90.
In the Driver Information Centre, the
distance to a front and rear obstacle
is displayed by changing distance
lines.
Driving and operating135
In the Colour-Info-Display, distance isdisplayed by coloured zones in front
of or behind the vehicle.
The distance indication in the Driver
Information Centre can be inhibited
by vehicle messages with a higher
priority. After approving the message
by pressing the SET/CLR button on
the turn signal lever, distance
indication appears again.
Fault
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, the LED in the button flashes for 3 seconds
and then extinguishes. Control
indicator r illuminates in the
instrument cluster 3 84 and a
message pops-up in the Driver
Information Centre.
Vehicle messages 3 92.Advanced parking assist9 Warning
It is the driver who bears full
responsibility for accepting the
parking slot suggested by the
system and the parking
manoeuvre.
Always check the sourrounding
area in all directions when using
advanced parking assist.
The advanced parking assist
measures a suitable parking slot
while passing, calculates the
trajectory and automatically steers
the vehicle into a parallel or
perpendicular parking slot.
Instructions are given by the Driver
Information Centre or the Colour-Info-
Display supported by acoustic
signals. The driver must control
acceleration, braking and gear
shifting, while steering is done
automatically.
Advanced parking assist can only be
activated when driving forwards.Advanced parking assist is always
combined with front-rear parking assist, see previous section. Both
systems use the same sensors in the front and rear bumper.
Button D and operation logic
Advanced parking assist and front-
rear parking assist both use the same button for activation and deactivation:
A brief press of button D activates
or deactivates the parking assist.
Long press of button D (approx. one
second) activates or deactivates the
advanced parking assist, see
separate description below.
138Driving and operating
A brief vibration in the steering wheel
after engaging reverse gear indicates
that the steering is controlled by the
system. Then the vehicle is steered
into the slot automatically by giving
the driver detailed instructions for
braking, accelerating and gear
shifting. The driver must keep hands
away from the steering wheel.
Pay always attention on the sound of
the front-rear parking assist.
Continuous sound means that the
distance to an obstacle is less than approx. 30 cm.
If, for any reason, the driver must take over control of the steering, hold the
steering wheel only at the outer edge. Automatic steering is cancelled in thisevent.Display indication
The instructions in the display show:
■ general hints and warning messages
■ a hint when driving faster than 18 mph during parking slot
searching mode, or 5 mph in
guiding mode,■ the demand to stop the vehicle, when a parking slot is detected,
■ the direction of driving during the parking manoeuvre,
■ the demand to shift rearwards or forwards,
■ the demand to accelerate or brake,
■ for some of the instructions a progress bar is shown in the DriverInformation Centre,
■ the successful parking indicated by
a pop-up symbol and a chime,
■ the cancelling of a parking manoeuvre.Selecting of parallel or perpendicular
parking
When searching for a parking slot,
select parallel or perpendicular
parking slot by pressing SET/CLR
button on the turn signal lever.
140Driving and operating
■ exceeding number of maximumgear changes: 8 parking cycles
when parallel parking or 5 cycles
when perpendicular parking,
■ switching off the ignition.
Deactivation by the driver or by the
system during manoeuvring will be indicated by Parking Deactivated in
the Driver Information Centre or Colour-Info-Display. Additionally an
acoustic signal sounds.
Fault
A message appears in the Driver
Information Centre when:
■ there is a fault in the system; control
indicator r illuminates in the
instrument cluster,
■ the driver did not successfully complete the parking manoeuvre,
■ the system is not operational,
■ any of the deactivation reasons described above apply.
If an object is detected during parkinginstructions, Stop is indicated in the
Driver Information Centre. Removing
the object will resume the parking
manoeuvre. If the object is not
removed, the system will be
deactivated. A long press of button
D will activate the system and
search for a new parking slot.
Basic notes on parking assist
systems9 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 has to 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
Driving and operating141correct 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.
Notice
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 might happen).
Make sure that the front license plate
is properly mounted (not bent and no
gaps to the bumper on the left or
right side) and the sensors are well
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 parking slot. After
selecting reverse gear the system
would start a parking manoeuvre.
Take care of the availability of the
suggested parking slot.
Surface irregularities, e.g. on
construction zones, are not detected by the system. The driver accepts
responsibility.
Notice
If engaging a forward gear and
exceeding a certain speed, the rear
parking assist will be deactivated
when the rear carrier system is
extended.
If engaging reverse at first, the
parking assist will detect the rear
carrier system and provide a buzzing
sound. Press r or D briefly to
deactivate the parking assist.
Notice
After production, the system
requires a calibration. For optimal
parking guidance, a driving distance
of at least 6 miles, including a
number of bends, is required.Side blind spot alert
The Side blind spot alert system
detects and reports objects on either
side of the vehicle, within a specified
"blind spot" zone. The system alerts visually in each exterior mirror, when
detecting objects that may not be
visible in the interior and exterior
mirrors.
Side blind spot alert uses some of the advanced parking assist sensors
which are located in the front and rear bumper on both sides of the vehicle.9 Warning
Side blind spot alert does not
replace driver vision.
The system does not detect: ■ Vehicles outside the side blind zones which may be rapidly
approaching.
■ Pedestrians, cyclists or animals.
Before changing a lane, always
check all mirrors, look over the
shoulder and use the turn signal.
142Driving and operating
When the system detects a vehicle inthe side blind zone while driving
forward, either while passing a
vehicle or being passed, an amber
warning symbol B will light up in the
relevant exterior mirror. If the driver
then activates the turn signal, the
warning symbol B starts flashing
amber as a warning not to change
lanes.
Side blind spot alert is active from
speeds of 6 mph up to 87 mph.
Driving faster than 87 mph deactives
the system, indicated by low lighting warning symbols B in both exterior
mirrors. Reducing the speed again
will extinguish the warning symbols. If a vehicle is then detected in the blindzone, the warning symbols B will
illuminate as normal on the relevant
side.
When the vehicle is started, both
exterior mirror displays will briefly
come on to indicate that the system is
operating.
The system can be activated or
deactivated in the Info-Display,
vehicle personalisation 3 97.
Deactivation is indicated by a
message in the Driver Information
Centre.
Detection zonesThe detection zones start at the rear
bumper and extend approx.
3 metres rearwards and to the sides. The height of the zone is approx.
between 0.5 metres and 2 metres off
the ground.
Side blind spot alert is designed to ignore stationary objects, e.g.
guardrails, posts, curbs, walls and
beams. Parked vehicles or oncoming
vehicles are not detected.Fault
Occasional missed alerts can occur
under normal circumstances and will
increase in wet conditions.
Side blind spot alert does not operate when the left or right corners of the
rear bumper are covered with mud,
dirt, snow, ice, slush, or in heavy
rainstorms. Cleaning instructions
3 190.
In the event of a fault in the system or if the system does not work due to
temporary conditions, a message is
displayed in the Driver Information
Centre. Seek the assistance of a
workshop.