
The system does not measure the actual infla‐
tion pressure in the tires.
Functional requirements
The system must have been initialized when
the tire inflation pressure was correct; other‐
wise, reliable flagging of a flat tire is not as‐
sured. Initialize the system after each correc‐
tion of the tire inflation pressure and after
every tire or wheel change.
Status display
The current status of the Flat Tire Monitor can
be displayed on the Control Display, e.g.,
whether or not the FTM is active.
On the Control Display:1."Vehicle info"2."Vehicle status"3.  "Flat Tire Monitor (FTM)"
The status is displayed.
Initialization
When initializing the once set inflation tire
pressures serve as reference values in order to
detect a flat tire. Initialization is started by con‐
firming the tire inflation pressures.
Do not initialize the system when driving with
snow chains.
On the Control Display:
1."Vehicle info"2."Vehicle status"3.  "Perform reset"4.Start the engine - do not drive off.5.Start the initialization with "Perform reset".6.Drive away.
The initialization is completed while driving,
which can be interrupted at any time.
The initialization automatically continues when
driving resumes.
Indication of a flat tire
The yellow warning lamp lights up. A
Check Control message is displayed.
There is a flat tire or a major loss in tire
inflation pressure.1.Reduce your speed and stop cautiously.
Avoid sudden braking and steering maneu‐
vers.2.Check whether the vehicle is fitted with
regular tires or run-flat tires.
Run-flat tires, refer to page  208, are la‐
beled with a circular symbol containing the
letters RSC marked on the tire's sidewall.
Do not continue driving without run-flat
tires
Do not continue driving if the vehicle is not
equipped with run-flat tires; continued driving
may result in serious accidents.◀
When a flat tire is indicated, DSC Dynamic Sta‐
bility Control is switched on if needed.
System limits Sudden tire damage
Sudden serious tire damage caused by
external circumstances cannot be recognized
in advance.◀
A natural, even tire inflation pressure loss in all
four tires will not be recognized. Therefore,
check the tire inflation pressure regularly.
The system could be delayed or malfunction in
the following situations:
▷When the system has not been initialized.▷When driving on a snowy or slippery road
surface.▷Sporty driving style: spinning traction
wheels, high lateral acceleration (drifting).▷When driving with snow chains.Seite 115SafetyControls115
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HintsPersonal responsibility
The system does not serve as a substi‐
tute for the driver's personal judgment of the
traffic situation.
Be aware of the traffic situation and the vehi‐
cle's surroundings at all times, otherwise acci‐
dents are still possible despite all warnings.◀
Adapting your speed and driving style
The displays and warnings of the system
do not relieve the driver of the responsibility to
adapt his or her driving speed and style to the
traffic conditions.◀
Be alert
Due to system limitations, warnings may
be not issued at all, or may be issued late or
improperly. Therefore, always be alert and ready to intervene; otherwise, there is the risk
of an accident.◀
Tow-starting and towing
For tow-starting or towing, switch off the
Intelligent Safety systems; otherwise malfunc‐
tions of the individual braking systems might
lead to accidents.◀
At a glance
Button in the vehicle
Intelligent Safety button
Camera
The camera is found near the interior rearview
mirror.
Keep the windshield in the area behind the in‐
terior rearview mirror clean and clear.
Switching on/offThe Intelligent Safety systems are automati‐
cally active after every departure.
Press button: the systems are turned
off. The LED goes out.
Press button: the systems are turned on. The
LED lights up.
Settings can be made on the Control Display.
Front-end collision warning
Depending on the equipment, the collision
warning system consists of one of the two sys‐
tems:
▷Front-end collision warning with City Brak‐
ing function, refer to page  120.▷Front-end collision warning with braking
function, refer to page  118Seite 117SafetyControls117
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Radar sensor
The radar sensor is located in the lower area of
the front bumper.
Always keep radar sensor clean and unob‐
structed.
Camera
The camera is found near the interior rearview
mirror.
Keep the windshield in the area behind the in‐
terior rearview mirror clean and clear.
Switching on/off
Switching on automatically The system is automatically active after every
driving-off.
Switch off Press button: the system is switched
off. The LED goes out.
Re-press button: the system is switched on.
The LED lights up.
Setting the warning time
The warning time can be set via iDrive.1."Settings"2."Frontal Coll. Warning"3.Activate the desired time on the Control
Display.
The selected time is stored for the profile cur‐
rently in use.
Warning with braking function
Display If a collision with a recognized vehicle is immi‐
nent a warning symbol appears in the instru‐
ment cluster and in the Head-Up Display.
SymbolMeasureThe vehicle lights up red: prewarn‐
ing.
Brake and increase distance.The vehicle flashes red and an
acoustic signal sounds: acute warn‐
ing.
You are requested to intervene by
braking or make an evasive maneu‐
ver.
Prewarning
This warning is issued, e.g., when there is the
impending danger of a collision or the distance
to the vehicle ahead is too small.
The driver must intervene actively when there
is a prewarning.
Acute warning with braking function
Warning of the imminent danger of a collision
when the vehicle approaches another object at
a relatively high differential speed.
The driver must intervene actively when there
is an acute warning. If necessary, the driver is
assisted by an automatic braking intervention
in a possible risk of collision.
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Switching on/off
Switching on automatically The system is automatically active after every
driving-off.
Switch off Press button: the system is switched
off. The LED goes out.
Re-press button: the system is switched on.
The LED lights up.
Setting the warning time The warning time can be set via iDrive.1."Settings"2."Frontal Coll. Warning"3.Activate the desired time on the Control
Display.
The selected time is stored for the profile cur‐
rently in use.
Warning with braking function
Display If a collision with a recognized vehicle is immi‐
nent a warning symbol appears in the instru‐
ment cluster and in the Head-Up Display.
SymbolMeasureThe vehicle lights up red: prewarn‐
ing.
Brake and increase distance.The vehicle flashes red and an
acoustic signal sounds: acute warn‐
ing.
You are requested to intervene by
braking or make an evasive maneu‐
ver.Prewarning
This warning is issued, e.g., when there is the
impending danger of a collision or the distance
to the vehicle ahead is too small.
The driver must intervene actively when there
is a prewarning.
Acute warning with braking function
Warning of the imminent danger of a collision
when the vehicle approaches another object at
a relatively high differential speed.
The driver must intervene actively when there
is an acute warning. If necessary, the driver is
assisted by a minor automatic braking inter‐
vention in a possible risk of collision.
Acute warnings can also be triggered without
previous prewarning.
Braking intervention The warning prompts the driver himself/herself
to react. During a warning, the maximum brak‐
ing force is used. Premise for the brake boos‐
ter is sufficiently quick and hard stepping on
the brake pedal. The system can assist with
some braking intervention if there is risk of a
collision. At low speeds vehicles may thus
come to a complete stop.
The braking intervention is executed only if
DSC Dynamic Stability Control is switched on
and Dynamic Traction Control DTC is acti‐
vated.
The braking intervention can be interrupted by
stepping on the accelerator pedal or by ac‐
tively moving the steering wheel.
Object detection can be restricted. Limitations
of the detection range and functional restric‐
tions are to be considered.
System limits
Detection range
The system's detection potential is limited.Seite 122ControlsSafety122
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▷Central area, arrow 1, directly in front of the
vehicle.▷Expanded area, arrow 2, to the right and
left.
A collision is imminent if pedestrians are lo‐
cated within the central area. A warning is is‐
sued about pedestrians who are located within
the extended area only if they are moving in
the direction of the central area.
Hints Personal responsibility
The system does not serve as a substi‐
tute for the driver's personal judgment of the
traffic situation.
Be aware of the traffic situation and the vehi‐
cle's surroundings at all times, otherwise acci‐
dents are still possible despite all warnings.◀
Adapting your speed and driving style
The displays and warnings of the system
do not relieve the driver of the responsibility to
adapt his or her driving speed and style to the
traffic conditions.◀
Be alert
Due to system limitations, warnings may
be not issued at all, or may be issued late or
improperly. Therefore, always be alert and
ready to intervene; otherwise, there is the risk
of an accident.◀
Tow-starting and towing
For tow-starting or towing, switch off the
Intelligent Safety systems; otherwise malfunc‐
tions of the individual braking systems might
lead to accidents.◀
At a glance
Button in the vehicle
Intelligent Safety button
Camera
The camera is found near the interior rearview
mirror.
Keep the windshield in the area behind the in‐
terior rearview mirror clean and clear.
Switching on/off
Switching on automatically The system is automatically active after every
driving-off.
Switch off Press button: the systems are turned
off. The LED goes out.
Press button: the systems are turned on. The
LED lights up.
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Overview
Buttons in the vehicle
Intelligent Safety button
Switch on/switch off heat image
Camera
The camera is automatically heated when the
external temperatures are low.
The camera lens is automatically cleaned to‐
gether with the headlights.
Switching on/off
Switching on automatically When it is dark outside, the system is automat‐
ically active after every driving-off.
Switch off
The system is only switched off until the next
time the engine is started with the Start/Stop
button.
Press button.
The LED goes out. Switching on heat image additionally
The heat image from the Night Vision camera
can also be displayed on the Control Display.
This function has no effect on object detec‐
tion.
Press button.
The image from the camera is displayed on the
Control Display.
Adjustments via the iDrive
With heat image switched on:1.Press the controller.2.Select brightness or contrast.▷  Select the symbol.▷  Select the symbol.3.Turn the controller until the desired setting
is selected.4.Press the controller.
Display
Warning of people or animals in
danger
If a collision with a person or an animal de‐
tected in this way is imminent, a warning sym‐
bol appears on the instrument cluster and in
the Head-up Display.
Although both the shape and the heat radiation
are analyzed, false warnings cannot be ruled
out.
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Small animals are not detected by the object
detection function, even if they are clearly visi‐
ble in the image.
Limited detection:▷People or animals who are fully or partially
covered, especially when their heads are
covered.▷People who are not in an upright position,
e.g., lying down.▷Cyclists on unconventional bicycles (e.g.,
recumbent bicycles).▷After physical damage to the system, e.g.,
after an accident.
Lane departure warning
The concept Starting at a specific speed, this system alerts
you when the vehicle on streets with lane
markings is about to leave the lane. This
speed, depending on the country version, is
between 35 mph/55 km/h and
45 mph/70 km/h.
When switching on the system below this
speed, a message is displayed in the instru‐
ment cluster.
The steering wheel begins vibrating gently in
the event of warnings. The time of the warning
may vary depending on the current driving sit‐
uation.
The system does not provide a warning if the
turn signal is set before leaving the lane.
Hints Personal responsibility
The system cannot serve as a substitute
for the driver's personal judgment of the
course of the road and the traffic situation.
In the event of a warning, do not jerk the steer‐
ing wheel, as you may lose control of the vehi‐
cle.◀
At a glance
Button in the vehicle
Lane departure warning
Camera
The camera is found near the interior rearview
mirror.
Keep the windshield in the area behind the in‐
terior rearview mirror clean and clear.
Switching on/off Press button.
▷On: the LED lights up.▷Off: the LED goes out.
Settings are stored for the profile currently in
use.
Display in the instrument cluster
▷Lines: system is activated.Seite 129SafetyControls129
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▷Arrows: at least one lane marking was de‐
tected and warnings can be issued.
Display in the instrument display
▷Symbol orange: system is acti‐
vated.▷Symbol green: at least one lane
marking was detected and warn‐
ings can be issued.
Issued warning
If you leave the lane and if a lane marking has
been detected, the steering wheel begins vi‐
brating.
If the turn signal is set before changing the
lane, a warning is not issued.
End of warning
The warning ends:
▷Automatically after approx. 3 seconds.▷When returning to your own lane.▷When braking hard.▷When using the turn signal.
System limits
The system may not be fully functional in the
following situations:
▷In heavy fog, rain or snowfall.▷In the event of missing, worn, poorly visi‐
ble, merging, diverging, or multiple lane
markings such as in construction areas.▷When lane markings are covered in snow,
ice, dirt or water.▷In tight curves or on narrow lanes.▷When the lane markings are covered by
objects.▷When driving very close to the vehicle in
front of you.▷When driving toward bright lights.▷When the windshield in front of the interior
rearview mirror is fogged over, dirty or cov‐
ered with stickers, etc.▷During calibration of the camera immedi‐
ately after vehicle shipment.
Active Blind Spot Detection
The concept
Two radar sensors below the rear bumper
monitor the area behind and next to the vehicle
at speeds above approx. 30 mph/50 km/h.
The system indicates whether there are vehi‐
cles in the blind spot, arrow 1, or approaching
from behind on the adjacent lane, arrow 2.
The lamp in the exterior mirror housing is dim‐
med.
Before you change lanes after setting the turn
signal, the system issues a warning in the sit‐
uations described above.
The lamp in the exterior mirror housing flashes
and the steering wheel vibrates.
Hints Personal responsibility
The system does not serve as a substi‐
tute for the driver's personal judgment of the
traffic situation.
Be aware of the traffic situation and the vehi‐
cle's surroundings at all times, otherwise acci‐
dents are still possible despite all warnings.◀
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