InitializationThe initialization process adopts the set infla‐
tion tire pressures as reference values for the
detection of a flat tire. Initialization is started by
confirming the inflation pressures.
Do not initialize the system when driving with
snow chains.1. Press the button.2. "Vehicle Info"3."Vehicle status"4."Flat Tire Monitor (FTM)"5.Start the engine - do not drive away.6.Start the initialization with "Flat Tire
Monitor (FTM) reset".7.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 173, are la‐
beled with a circular symbol containing the
letters RSC marked on the tire 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 necessary.
System limits Sudden tire damage
Sudden serious tire damage caused by
external influences cannot be indicated in ad‐
vance. ◀
A natural, even pressure loss in all four tires
cannot be detected. 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: slip in the drive wheels,
high lateral acceleration.▷When driving with snow chains.
Actions in the event of a flat tire
Normal tires
1.Identify the damaged tire.
Do this by checking the air pressure in all
four tires.
The tire pressure gauge of the Mobility Sys‐
tem, refer to page 173, can be used for this
purpose.
If the tire inflation pressure in all four tires is
correct, the Flat Tire Monitor may not have
been initialized. In this case, initialize the
system.
If an identification is not possible, please
contact the service center.2.Rectify the flat tire using the Mobility Sys‐
tem, refer to page 173.Seite 78ControlsSafety78
Online Edition for Part no. 01 40 2 925 116 - X/13
At a glance
Button in the vehicle
Intelligent Safety button
Switching on/off Some Intelligent Safety systems are automati‐
cally active after each engine start via the start/
stop button. Some Intelligent Safety systems
activate according to the last setting.
Press the button:
The menu for the intelligent safety sys‐
tem is displayed. Adjustments can be made.
The individual settings are stored for the re‐
mote control currently in use.
Press the button briefly:
▷Intelligent Safety systems are indi‐
vidually switched off according to
individual setting.▷LED lights up orange or goes out depend‐
ing on the individual setting.
Press the button again:
▷All Intelligent Safety systems are switched
on.▷The LED lights up green.
Hold the button down:
▷All Intelligent Safety systems are
switched off.▷The LED goes out.Collision warning with
City Braking function
The concept
The system can help to prevent accidents. If an
accident cannot be prevented, the system
helps to reduce the collision speed.
The system issues a warning if there is immi‐
nent danger of a collision and if so brakes inde‐
pendently.
The automatic braking intervention is done
with limited force and duration.
The system is controlled via a camera in the
base of the mirror.
The collision warning is available even if cruise
control has been deactivated.
When the vehicle is intentionally brought close to a vehicle, the collision warning is delayed to
avoid false warnings.
General information The system issues a two-phase warning of a
danger of collision with vehicles at speeds
above approx. 3 mph/5 km/h. The time of
these warnings may vary depending on the
current driving situation.
Up to approx. 35 mph/60 km/h a braking inter‐
vention occurs when appropriate.
Detection range
Vehicles are observed when they are traveling
in the same direction of movement if they are
Seite 80ControlsSafety80
Online Edition for Part no. 01 40 2 925 116 - X/13
located within the detection range of the sys‐
tem.
At a glance
Button in the vehicle
Intelligent Safety button
Camera
The camera is located near the base of the mir‐
ror.
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 every time
the engine is started using the Start/Stop but‐
ton.
Switching on/off manually Press the button: the menu for the in‐
telligent safety system is displayed. Ad‐
justments can be made. The individual settings
are stored for the remote control currently in
use.
Press the button briefly:▷Intelligent Safety systems are individually
switched off according to individual setting.▷The LED lights up orange.
Press the button again:
▷All Intelligent Safety systems are switched
on.▷The LED lights up green.
Hold the button down:
▷All Intelligent Safety systems are switched
off.▷The LED goes out.
Setting the warning time
The warning time can be set on the radio.
1.Intelligent Safety button
The intelligent safety menu is displayed for
a brief time on the radio display.2."Front. Coll. Warn."3."Warning time"4.Setting the desired warning time
The selected channel is stored for the remote
control currently in use.
Warning with braking function Note Adapting your speed and driving style
The warning does not relieve the driver of
the responsibility to adapt his or her driving
speed and style to the traffic conditions. ◀
Display If a collision with a vehicle detected in this way
is imminent, a warning symbol appears on the
instrument cluster and in the Head-up Display.
Seite 81SafetyControls81
Online Edition for Part no. 01 40 2 925 116 - X/13
SymbolMeasureThe vehicle lights up red: prewarning.
Increase braking and distance.The vehicle flashes red and an acous‐
tic signal sounds: acute warning.
You are requested to intervene by
braking or making an evasive maneu‐
ver.
Braking intervention
The warning prompts the driver himself to in‐
tervene. During a warning, the maximum brak‐
ing force is used. A prerequisite for the brake
booster is a sufficiently fast and sufficiently
strong actuation of the brake pedal. In addi‐
tion, if there is a risk of collision, the system can
assist with a slight braking intervention. The in‐
tervention can bring a vehicle traveling at slow
speed to a complete stop.
Manual transmission: During a braking inter‐
vention up until reaching a complete stop, the
engine may be shut down.
The braking intervention is executed only if DSC
Dynamic Stability Control is switched on and
Dynamic Traction Control DTC is activated.
The braking intervention can be interrupted by
pressing on the accelerator pedal or by actively
moving the steering wheel.
Tow-starting and towing
When tow-starting and towing the vehi‐
cle, switch off the Intelligent Safety systems;
otherwise, improper behavior of the braking
function of individual systems could result in an
accident. ◀
System limits Be alert
Due to system limitations, warnings may
be not be issued at all, or may be issued late or
improperly. Therefore, always be alert and
ready to intervene; otherwise, there is the dan‐
ger of an accident occurring. ◀
Detection range The system's detection capabilities are limited.
This may result in the warning not being issued
or being issued late.
For example, the following situations may not
be detected:▷Slow moving vehicles when you approach
them at high speed.▷Vehicles that suddenly swerve in front of
you or sharply decelerating vehicles.▷Vehicles with an unusual rear appearance.▷Two-wheeled vehicles ahead of you.▷Pedestrians.
Functional limitations
The system may not be fully functional in the
following situations:
▷In heavy fog, rain, sprayed water or snow‐
fall.▷In tight curves.▷If the driving stability control systems are
limited or deactivated, for example, DSC
OFF.▷If the camera in the mirror is dirty or ob‐
scured.▷During calibration of the camera immedi‐
ately after vehicle shipment.▷If there is constant dimming because of on‐
coming light, for example, from the sun low
in the sky.
Prewarning sensitivity
Depending on the set prewarning time, this
may result in increased false warnings.
Seite 82ControlsSafety82
Online Edition for Part no. 01 40 2 925 116 - X/13
justments can be made. The individual settings
are stored for the remote control currently in
use.
Press the button briefly:▷Intelligent Safety systems are individually
switched off according to individual setting.▷The LED lights up orange.
Press the button again:
▷All Intelligent Safety systems are switched
on.▷The LED lights up green.
Hold the button down:
▷All Intelligent Safety systems are switched
off.▷The LED goes out.
Warning with braking function
Note Adapting your speed and driving style
The warning does not relieve the driver of
the responsibility to adapt his or her driving
speed and style to the traffic conditions. ◀
Display
If a collision with a person detected in this way
is imminent, a warning symbol appears on the
instrument cluster and in the Head-up Display.
The red symbol is displayed and a signalsounds.
Intervene immediately by braking or
making an evasive maneuver.
Braking intervention
The warning prompts the driver himself to in‐
tervene. During a warning, the maximum brak‐ ing force is used. A prerequisite for the brake
booster is a sufficiently fast and sufficiently
strong actuation of the brake pedal. In addi‐
tion, if there is a risk of collision, the system can
assist with a slight braking intervention. The in‐
tervention can bring a vehicle traveling at slow
speed to a complete stop.
Manual transmission: During a braking inter‐
vention up until reaching a complete stop, the
engine may be shut down.
The braking intervention is executed only if DSC
Dynamic Stability Control is switched on and
Dynamic Traction Control DTC is activated.
The braking intervention can be interrupted by
pressing on the accelerator pedal or by actively
moving the steering wheel.
Tow-starting and towing
When tow-starting and towing the vehi‐
cle, switch off the Intelligent Safety systems;
otherwise, improper behavior of the braking
function of individual systems could result in an
accident. ◀
System limits Be alert
Due to system limitations, warnings may
be not be issued at all, or may be issued late or
improperly. Therefore, always be alert and
ready to intervene; otherwise, there is the dan‐
ger of an accident occurring. ◀
Detection range The detection capability of the camera is lim‐
ited.
This may result in the warning not being issued
or being issued late.
For example, the following situations may not
be detected:▷Partially covered pedestrians.▷Pedestrians that are not detected as such
because of the viewing angle or contour.▷Pedestrians outside of the detection range.▷Pedestrians having a body size less than
32 in/80 cm.Seite 84ControlsSafety84
Online Edition for Part no. 01 40 2 925 116 - X/13
Driving stability control systemsVehicle equipment
All standard, country-specific and optional
equipment that is offered in the model series is
described in this chapter. Therefore, equipment
is also described that is not available in a vehi‐
cle, e. g., because of the selected optional
equipment or country variant. This also applies
for safety-related functions and systems.
Antilock Brake System
ABS
ABS prevents locking of the wheels during
braking.
The vehicle remains steerable even during full
brake applications, thus increasing active
safety.
ABS is operational every time you start the en‐
gine.
Brake assistant When you apply the brakes rapidly, this systemautomatically produces the maximum braking
force boost. This then reduces braking distance
to a minimum during full braking. This system
utilizes all of the benefits provided by ABS.
Do not reduce the pressure on the brake pedal
for the duration of the full braking.
DSC Dynamic Stability
Control
The concept
DSC prevents traction loss in the driving wheels
when driving away and accelerating.DSC also recognizes unstable vehicle condi‐
tions, such as fishtailing or nose-diving. Subject
to physical limits, DSC helps to keep the vehicle
on a steady course by reducing engine speed
and by applying brakes to the individual
wheels.
Adjust your driving style to the situation
An appropriate driving style is always the
responsibility of the driver.
The laws of physics cannot be repealed, even
with DSC.
Therefore, do not reduce the additional safety
margin by driving in a risky manner. ◀
Indicator/warning lamps The indicator lamp flashes: DSC controls
the drive forces and brake forces.
The indicator lamp lights up: DSC has
failed.
Deactivating DSC: DSC OFF
When DSC is deactivated, driving stability is re‐
duced during acceleration and when driving in
bends.
To increase vehicle stability, activate DSC again
as soon as possible.
Deactivating DSC Press and hold the button, but not lon‐
ger than approx. 10 seconds, until the
indicator lamp for DSC OFF lights up in the in‐
strument cluster and DSC OFF is displayed.
The DSC system is switched off.
Activating DSC Press the button.Seite 86ControlsDriving stability control systems86
Online Edition for Part no. 01 40 2 925 116 - X/13
DSC OFF and the DSC OFF indicator lamp go
out.
Indicator/warning lamps When DSC is deactivated, DSC OFF is displayed
in the instrument cluster.
The indicator lamp lights up: DSC is de‐
activated.
Automatic activation When DSC is deactivated, automatic activation
occurs in the following situations:▷Failure of Dynamic Damping Control.▷The vehicle has a flat tire.▷When activating cruise control in TRACTION
or DSC OFF mode.
DTC Dynamic Traction
Control
The concept
The DTC system is a version of the DSC in which
forward momentum is optimized.
The system ensures maximum forward mo‐
mentum on special road conditions, e.g., unp‐
lowed snowy roads, but driving stability is lim‐
ited.
It is therefore necessary to drive with appropri‐
ate caution.
You may find it useful to briefly activate DTC
under the following special circumstances:
▷When driving in slush or on uncleared,
snow-covered roads.▷When rocking the vehicle or driving off in
deep snow or on loose surfaces.▷When driving with snow chains.Deactivating/activating DTC Dynamic
Traction Control
Activating the Dynamic Traction Control DTC
provides maximum traction on loose ground. TRACTION is activated. Driving stability is lim‐
ited during acceleration and when driving in
bends.
Activating DTC Press the button.
TRACTION is displayed in the instru‐
ment cluster and the indicator lamp for DSC
OFF lights up.
Deactivating DTC Press the button again.
TRACTION and the DSC OFF indicator
lamp go out.
Performance Control
Performance Control enhances the agility of
your vehicle.
To enhance performance during sporty driving,
the front wheel on the inside of the curve is
braked while the resulting braking effect is
largely compensated by engine intervention.
Dynamic Damping Con‐
trol
The concept
This system reduces undesirable vehicle motion
when using a dynamic driving style or traveling
on uneven road surfaces.
The system enhances driving dynamics and
comfort as required for the road surface and
driving style.Seite 87Driving stability control systemsControls87
Online Edition for Part no. 01 40 2 925 116 - X/13
stored values. The selected distance is briefly
displayed in the info display.
In the following cases, the stored speed value is
deleted and cannot be called up again:▷When the system is switched off.▷When the ignition is switched off.
Changing between cruise control with/
without distance control
Traffic driving ahead
The cruise control does not react to traffic
driving ahead of you, but instead maintains the
stored speed. Take this factor into account – you yourself must react; otherwise, there is the
danger of an accident occurring. ◀
To switch over to cruise control: Press and hold the button, or
Press and hold the button.
The indicator lamp in the instrument
cluster comes on and check-control
message is displayed as soon as the
switch is made to cruise control.
To switch back to the camera-based cruise con‐
trol, press one of the buttons.
Displays in the instrument cluster
Desired speed In addition to the indicator lamp, the
desired speed is displayed in the info
display.
▷The indicator lights up green: the system is
active.▷The indicator lights up orange: the system
has been interrupted.▷No display: system is switched off.Brief status display
Selected desired speed.
If --- appears briefly on the display for Check
Control messages, it is possible that the system
requirements for operation are currently not met.
Distance to vehicle ahead of you
Selected distance from the vehicle driving
ahead is briefly displayed in the left hand por‐
tion of the info display.Distance displayDistance 1Distance 2Distance 3Distance 4
This value is set after the system is
switched on.
Indicator/warning lamps
Personal responsibility
The indicator and warning lamps do not
relieve the driver of the responsibility to adapt
his or her desired driving speed and style to the
traffic conditions. ◀
The vehicle symbol lights up orange:
A vehicle has been detected ahead of
you.
The vehicle symbol flashes orange:
The conditions are not adequate for op‐
erating the system.
The system was deactivated but applies the
brakes until you actively resume control by
Seite 93Driving comfortControls93
Online Edition for Part no. 01 40 2 925 116 - X/13