
Runflat indicator RPA
Principle The system identifies a loss of tyre pressure
by comparing the speeds of rotation of the in‐
dividual wheels while the vehicle is in motion.
If a tyre loses pressure, its diameter changes.
This in turn alters the rotational speed of the
corresponding wheel. This is detected and re‐
ported as a flat tyre.
The system does not measure the tyre pres‐
sures as such.
Operating requirements
The system must have been initialised with
correct tyre inflation pressure, otherwise relia‐
ble signalling of a flat tyre cannot be assured.
Each time the tyre pressure is adjusted or a
tyre or wheel is changed, initialise the system
again.
Status display The current status of the runflat indicator can
be shown on the Control Display, for example
whether the runflat indicator is active.
On the Control Display:1."Vehicle information"2."Vehicle status"3. "Flat Tyre Monitor (RPA)"
The status is displayed.
Initialising
On initialisation, the current tyre pressures are
stored as a reference for detection of a flat tyre. The initialisation is started by confirming
the correct tyre inflation pressures.
When driving with snow chains fitted, do not
initialise the system.
On the Control Display:
1."Vehicle information"2."Vehicle status"3. "Perform reset"4.Start the engine – do not drive off.5.Start the initialisation with "Perform reset".6.Drive off.
Initialising is completed while the vehicle is in
motion; this process can be interrupted at any
time.
Initialising resumes automatically when you
continue your journey.
Message of a flat tyre The yellow warning lamp is illuminated.
A Check Control message is shown.
There is a flat tyre or substantial loss of
tyre pressure.
1.Reduce your speed and carefully stop the
vehicle. Avoid violent or sudden braking
and steering manoeuvres.2.Determine which wheel is damaged. Do
this by checking the tyre inflation pres‐
sures with the aid of the Mobility System. If
all tyres are inflated to the correct pres‐
sures, the runflat indicator might not have
been initialised. In this case initialise the
system.3.Remedy the flat tyre with the Mobility Sys‐
tem or replace the damaged wheel.
System limits
A natural, even loss of tyre pressurein all four
tyres that occurs over time is not detected.
Consequently, check the tyre inflation pres‐
sure at regular intervals.
No warning can be given in the event of sud‐
den tyre failure caused by external factors.
In the following situations, the system could be
slow to respond or operate incorrectly:
▷If the system has not been initialised.▷Journey on snow-covered or slippery sur‐
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collision. The vehicle can be braked at low
speed until it comes to a stop.
Manual gearbox: When brakes are engaged
until it comes to a stop, the engine may shut
off.
There will only be brake intervention if Dy‐
namic Stability Control, DSC is activated and
M Dynamic Mode MDM is not activated.
Braking can be discontinued either by pressing
the accelerator pedal or by actively moving the
steering wheel.
Detection of objects can be restricted. Limita‐
tions of the detection range and functional re‐
strictions are to be considered.
System limits
Detection range
The detection ability of the system is limited.
For this reason, system responses may be
missing or delayed.
It is possible that the following are not detec‐
ted:▷Slow-moving vehicle when approaching at
high speed.▷Vehicles suddenly cutting in or decelerat‐
ing heavily.▷Vehicles with unusual rear view.▷Two-wheeled vehicles ahead.
Restrictions of the function
The function can be restricted, for example in
the following situations:
▷In thick fog, rain, spray or snowfall.▷On sharp bends.▷When restricting or deactivating vehicle
stability control systems, for example DSC
OFF.▷If the field of view of the camera in the mir‐
ror is soiled or covered.▷Up to 10 seconds after starting the engine
using the start/stop button.▷During the calibration process of the cam‐
era immediately after the vehicle is sup‐
plied.▷When there is sustained glare effect due to
light opposite, for example the sun low in
the sky.
Sensitivity of the warnings
The greater the sensitivity of the warning set‐
tings, for example warning time, the more
warnings will be displayed. As a result, there
may be an increased number of incorrect
warnings.
Person warning with city
braking function
Principle The system can help to avoid accidents with
pedestrians.
The system warns of the possible risk of colli‐
sion with pedestrians in the urban speed area
and also contains a braking function.
The system is controlled by the camera in the
area of the rear-view mirror.
General
The system warns with sufficient brightness
from approx. 10 km/h, approx. 6 mph up to ap‐
prox. 60 km/h, approx. 35 mph of any risk of
collision with pedestrians and supports this by
briefly applying the brakes before a collision.
Here, persons are taken into account if they
are located within the detection range of the
system.
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Warning with braking function
Display
If there is a risk of collision with a detected per‐
son, a warning symbol is shown in the instru‐
ment cluster and in the head-up display.
Red symbol is displayed and an acous‐
tic warning sounds.
Take action yourself immediately, by braking
or swerving.
Brake intervention
The warning requires to take action yourself.
Maximum braking force is used during a warn‐
ing. In order for braking force support to be
used, it is necessary for the brake to be
pressed sufficiently quickly and powerfully. In
addition, the system may also support with a
small amount of braking if there is the risk of a
collision. The vehicle can be braked at low
speed until it comes to a stop.
Manual gearbox: When brakes are engaged
until it comes to a stop, the engine may shut
off.
There will only be brake intervention if Dy‐
namic Stability Control, DSC is activated and
M Dynamic Mode MDM is not activated.
Braking can be discontinued either by pressing
the accelerator pedal or by actively moving the
steering wheel.
Detection of objects can be restricted. Limita‐
tions of the detection range and functional re‐
strictions are to be considered.
System limits
Detection range
The detection capacity of the camera is limi‐
ted.
This is why it can occur that no warnings are
issued or they are issued late.
It is possible that the following are not detec‐
ted:▷Partially concealed pedestrians.▷Pedestrians who are not detected as such
because of the viewing angle or contour.▷Pedestrians outside the detection range.▷Pedestrians under a height of approxi‐
mately 80 cm, 32 in.
Restrictions of the function
The function may be restricted or not available
in the following situations, for example:
The function may be available on a limited ba‐
sis in the following situations, for example:
▷In thick fog, rain, spray or snowfall.▷On sharp bends.▷When deactivating vehicle stability control
systems, for example DSC OFF.▷If the field of view of the camera and/or the
windscreen is dirty or covered.▷Up to 10 seconds after starting the engine
using the start/stop button.▷During the calibration process of the cam‐
era immediately after the vehicle is sup‐
plied.▷When there is sustained glare effect due to
light opposite, for example the sun low in
the sky.▷In the dark.
Lane departure warning
Principle This system warns if the vehicle leaves the
lane, when the vehicle is on roads with lane
markings and travelling above a given speed.
Depending on country version, this speed is
between 55 km/h, approximately 35 mph and
70 km/h, approximately 45 mph.
When switching on the system below this
speed, a message is displayed in the instru‐
ment cluster.
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When there are warnings, the steering wheel
starts to vibrate slightly. The timing of this
warning may vary depending on the current
driving situation.
The system does not issue a warning if the
driver indicates before leaving the driving lane.
Information WARNING
The system does not take your personal
responsibility from you when you are estimat‐
ing the course of the road and traffic situation.
Danger of accidents. Adapt driving style to the
driving conditions. Observe the traffic situation
and intervene actively if the situation warrants
it. Do not move the steering wheel with unnec‐
essary force in case of warnings.◀
Overview
Button in the vehicle
Lane departure warning
Camera
The camera is in the area of the base of the
rear-view mirror.
Keep the windscreen clean and clear in the
area in front of the rear view mirror.
Switching on/off Press the button.
▷On: LED is illuminated.▷Off: LED turns off.
The setting is stored for the currently used
profile.
Display in the instrument cluster
▷Lines: the system is activated.▷Arrows: at least one lane boundary
line has been detected and warn‐
ings can be issued.
Output of the warning
If the vehicle leaves the driving lane and a lane
marking is detected, the steering wheel starts
to vibrate.
If the turn indicator is set before changing
lanes, no warning is issued.
Cancellation of the warning
The warning is interrupted in the following sit‐
uations:
▷Automatically after approximately 3 sec‐
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▷On returning to the correct lane.▷With strong braking.▷On indicating.
System limits
The function can be restricted, for example in
the following situations:
▷In thick fog and heavy rain or snow.▷With missing, worn, poorly visible, merg‐
ing/separating or ambiguous boundary
lines, for example in areas where there are
road works.▷If boundary lines are covered by snow, ice,
dirt or water.▷On sharp bends or narrow roads.▷If the boundary lines are not white.▷If boundary lines are obscured.▷If the vehicle is moving too close to the ve‐
hicle ahead.▷With bright oncoming light.▷When the windscreen in front of the rear-
view mirror is covered with condensation,
dirt, stickers, labels, etc.▷During the calibration process of the cam‐
era immediately after the vehicle is sup‐
plied.Lane change warning
Principle
Two radar sensors in the rear bumper monitor
the area behind and beside the vehicle as of
approx. 20 km/h, approx.12 mph.
In some equipment configurations, the radar
sensors are active from approximately
50 km/h, approximately 30 mph.
The system indicates when vehicles are in the
blind spot, arrow 1, or are approaching from
the rear on an adjacent lane, arrow 2.
The light in the exterior mirror housing illumi‐
nates at a dimmed level.
Before changing lanes with the turn indicator
switched on, the system issues a warning the
above situations.
The light in the exterior mirror housing flashes
and the steering wheel vibrates.
Notes WARNING
The system does not take your personal
responsibility from you when you are estimat‐
ing the visibility conditions and traffic situation.
Danger of accidents. Adapt driving style to the
driving conditions. Observe the traffic situation
and intervene actively if the situation warrants
it.◀
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Overview
Button in the vehicle
Lane change warning
Radar sensors
The radar sensors are located in the rear
bumper.
Switching on/off Press the button.
▷On: LED is illuminated.▷Off: LED turns off.
The setting is stored for the currently used
profile.
Display
Light in the exterior mirror housing
Information level
The dimmed light in the exterior mirror housing
indicates when vehicles are in the blind spot or
are approaching from the rear.
Warning
If the turn indicator is set while a vehicle is in
the critical area, the steering wheel vibrates
briefly and the light in the exterior mirror hous‐
ing flashes brightly.
The warning is terminated when indicating is
completed or the other vehicle has left the crit‐
ical area.
Brief flashA brief flash of the light when unlocking the ve‐
hicle is used as a self-test of the system.
System limits
The function can be restricted in the following
situations:
▷If the speed of the approaching vehicle is
very much higher than that of your own
speed.▷In thick fog and heavy rain or snow.▷On sharp bends or narrow roads.▷If the bumper is soiled, iced-over or a
sticker is attached to it.
A Check Control message is displayed in the
event of limited functionality.
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Manual speed limiterPrinciple With the system, the speed can be restricted
from a value of 30 km/h/20 mph. There are no
restrictions below the set speed limit.
Exceeding the speed limit In particular situations the speed limit can be
deliberately exceeded by accelerating strongly.
The system gives a warning if the travelling
speed exceeds the set speed limit.
No brake intervention
If the set speed limit has been reached or unin‐
tentionally exceeded (for example driving
downhill) there is no brake intervention.
If you set a speed limit during the journey
which is below the current speed, the vehicle
rolls until the driving speed drops below the
speed limit.
Overview
Buttons on the steering wheelPress the but‐
tonFunctionSwitching system on/off,
see page 119Rocker switch:
Change speed limit, see
page 119
Controls
Switching on Press the button on the steering
wheel.
The current speed is assumed as the speed
limit.
When switching on when at a standstill
30 km/h/20 mph is set as the speed limit.
The speedometer marker is set to the corre‐
sponding speed.
When activating the speed limit it is possible
that Dynamic Stability Control, DSC is activa‐
ted.
Switching off Press the button on the steering
wheel.
For example, the system is also deactivated in
the following situations:▷When engaging reverse gear.▷When switching the engine off.▷When switching on Cruise Control.
The indicators turn off.
Change speed limit
Press the rocker switch repeatedly upwards or
downwards until the desired speed limit is set.
▷Every time the rocker switch is pressed to
the resistance point, the speed limit is in‐
creased or decreased by approximately
1 km/h, approximately 1 mph.▷Each time the rocker switch is pressed be‐
yond the resistance point, the speed limit
is increased or decreased to the next multi‐
ple of 10 km/h on the speedometer display.
If you set a speed limit during the journey
which is below the current speed, the vehicle
rolls until the driving speed drops below the
speed limit.
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Driving stability control systemsVehicle equipmentThis chapter describes all standard, national
and special equipment provided in the model
series. Equipment not available in the vehicle is
therefore also described, for example the se‐
lected special equipment or national version.
This also applies to safety-relevant functions
and systems. Comply with the relevant na‐
tional regulations when using the correspond‐
ing functions and systems.
Anti-lock Brake System,
ABS
ABS prevents the wheels from locking when
the brakes are applied.
Steering control is retained even in the event
of full braking, enhancing active road safety.
ABS is ready to operate each time the engine
is started.
Brake assist When brake is pressed quickly, this system au‐
tomatically applies maximum braking power
assistance. With full braking, this keeps the
braking distance as short as possible. It also
makes full use of the advantages offered by
ABS.
Maintain pressure on the brake during the en‐
tire brake application.
M Drive
Principle Individual settings can be made in two preset
configurations for the vehicle.When starting the engine, as standard an effi‐
cient vehicle state is active. M Drive is deacti‐
vated.
Overview
Configurations
The configurations are set as follows:▷"M Drive 1": relaxed, comfortable driving.▷"M Drive 2": sportive, dynamic driving.
Setting options
SymbolMeaning Dynamic Stability Control DSC, see
page 124, and M Dynamic Mode
MDM. Programs of the M Engine Dynam‐
ics Control, see page 78. Program of the Adaptive M chassis,
see page 126. Programs of the Servotronic, see
page 127. Drivelogic, see page 76: switching
modes and Drivelogic drive pro‐
grams. Views of the Head-Up Displays, see
page 94.
Configuring M Drive
The preset configurations can be individually
set.
On the Control Display:
1."Settings"2."M Drive 1" or "M Drive 2"Seite 123Driving stability control systemsControls123
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