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Driving and operating135
Change speed limit
With speed limiter active, turn thumb
wheel to RES/+ to increase or SET/-
to decrease the desired maximum
speed.
Exceeding the speed limit
In the event of an emergency it is possible to exceed the speed limit by
depressing the accelerator pedal
firmly beyond the point of resistance.
The limited speed will flash in the
Driver Information Centre and a
chime sounds during this period.
Release the accelerator pedal and the speed limiter function is
reactivated once a speed lower than
the limit speed is obtained.
Deactivation
Press button y: speed limiter is
deactivated and the vehicle can be
driven without speed limit.
The limited speed is stored.
Additionally, a corresponding
message appears in the Driver
Information Centre.
Resume limit speedTurn thumb wheel to RES/+. The
stored speed limit will be obtained.
Switching off
Press button L, the speed limit
indication in the Driver Information
Centre extinguishes. The stored
speed is deleted.
By pressing button m to activate
cruise control or by switching off the
ignition, speed limiter is also
deactivated and the stored speed is
deleted.Parking assist
Rear parking assist9 Warning
It is the driver who bears full
responsibility for the parking
manoeuvre.
Always check the surrounding
area while reversing and using the rear parking assist system.
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 and
visual signals.
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136Driving and operating
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 metres. 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.
Additionally the distance to obstacles
is shown in the Driver Information
Centre 3 89 or, depending on the
version, on the Colour-Info-Display
3 94.
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 87 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.
The front-rear parking assist
measures the distance between the vehicle and obstacles in front and
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Driving and operating137
behind the vehicle. The system givesacoustic 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 a 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.
Operation
When reverse gear is engaged, the
front and rear parking assist is ready
to operate.
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138Driving and operating
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 89 or, depending on the
version, on the Colour-Info-Display
3 94.
The distance to a front and rear
obstacle is displayed by changing
distance lines in the Driver
Information Centre.
The distance indication 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.
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Driving and operating139
The distance to obstacles is shown onthe Colour-Info-Display by coloured
zones in front of or behind the vehicle
3 94.
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 87 and a
message pops-up in the Driver
Information Centre.
Vehicle messages 3 96.
Advanced parking assist9 Warning
The driver bears full responsibility
for accepting the parking slot
suggested by the system and the
parking manoeuvre.
Always check the surrounding
area in all directions when using
the 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 on 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.
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140Driving and operating
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.Activation
When searching for a parking slot, the
system is ready to operate with a long press of button D.
The system recognises and
memorises (10 metres for parallel
parking slots or 6 metres for
perpendicular parking slots) even in
the parking assist mode. Long press
of button D activates advanced
parking assist to start parking
manoeuvre.
The system can only be activated at
a speed up to 18 mph and the system searches for a parking slot at a speed
up to 18 mph.
The maximum allowed parallel
distance between the vehicle and a
row of parked cars is 1.8 metres for
parallel parking and 2.5 metres for
perpendicular parking.
FunctionalityParking slot searching mode
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Driving and operating141
Select parallel or perpendicular
parking slot in Driver Information
Centre by pressing the SET/CLR
button.
When a slot is detected, a visual
feedback in the Driver Information
Centre and an acoustic signal is
given.
Select parallel or perpendicular
parking slot by tapping the icon 6 or
7 on the Colour-Info-Display.
When a slot is detected, a visual
feedback on the Colour-Info-Display
and an acoustic signal is given.
If the driver does not stop the vehicle
within 10 metres for parallel parking
slots or 6 metres for perpendicular
parking slots after a parking slot is
proposed, the system starts to search
for another suitable parking slot.
Park guiding mode
The parking slot suggestion of the system is accepted when the vehicle
is stopped by the driver within
10 metres for parallel parking slots or
6 metres for perpendicular parking
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142Driving and operating
slots after the Stop message is given.
The system calculates the optimal
path into the parking slot.
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.
Always pay attention to 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.Changing the parking side
The system is configured to detect
parking slots by default on the
passenger side. To detect parkingslots on the driver side, switch on turn
indicator to the driver side for the
durance of the search.
As soon as the turn indicator is
switched off, the system searches for
parking slots on the passenger side
again.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.
Display priorities
Advanced parking assist indication on
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,
advanced parking assist instructions
appear again and the parking
manoeuvre can be continued.
Deactivation
The system is deactivated by:
■ long press of button D,
■ parking manoeuvre successfully ended,
■ driving faster than 18 mph during parking slot search,
■ driving faster than 5 mph during parking guidance,
■ driver interference on steering wheel detected,