Data memoryMany electronic components on your vehicle
are equipped with data memories that tempo‐
rarily or permanently store technical informa‐
tion about the condition of the vehicle, events
and faults. This technical information generally
records the state of a component, a module, a
system or the environment:▷Operating mode of system components, fill
levels for instance.▷Status messages for the vehicle and from
its individual components, e.g., wheel rota‐
tion speed/vehicle speed, deceleration,
transverse acceleration.▷Malfunctions and faults in important sys‐
tem components, e.g., lights and brakes.▷Responses by the vehicle to special situa‐
tions such as airbag deployment or engag‐
ing the stability control system.▷Ambient conditions, such as temperature.
This data is purely technical in nature and is
used to detect and correct faults and to opti‐
mize vehicle functions. Motion profiles over
routes traveled cannot be created from this
data. When service offerings are used, e.g., re‐
pair services, service processes, warranty
claims, quality assurance, this technical infor‐
mation can be read out from the event and
fault memories by the service personnel, in‐
cluding the manufacturer, using special diag‐
nostic tools. You can obtain further information
there if you need it. After an error is corrected,
the information in the fault memory is deleted
or overwritten on a continuous basis.
With the vehicle in use there are situations
where you can associate these technical data
with individuals if combined with other infor‐
mation, e.g., an accident report, damage to the
vehicle, eye witness accounts — possibly with
the assistance of an expert.
Additional functions that are contractually
agreed with the customer - such as vehicle
emergency locating - you can transmit certain
vehicle data from the vehicle.
Event Data Recorder EDR
This vehicle is equipped with an event data re‐
corder EDR. The main purpose of an EDR is to
record, in certain crash or near crash-like situa‐
tions, such as an air bag deployment or hitting
a road obstacle, data that will assist in under‐
standing how a vehicle’s systems performed.
The EDR is designed to record data related to
vehicle dynamics and safety systems for a
short period of time, typically 30 seconds or
less.
The EDR in this vehicle is designed to record
such data as:▷How various systems in your vehicle were
operating.▷Whether or not the driver and passenger
safety belts were fastened.▷How far, if at all, the driver was depressing
the accelerator and/or brake pedal.▷How fast the vehicle was traveling.
These data can help provide a better under‐
standing of the circumstances in which
crashes and injuries occur.
EDR data are recorded by your vehicle only if a
nontrivial crash situation occurs; no data are
recorded by the EDR under normal driving
conditions and no personal data, e.g., name,
gender, age, and crash location, are recorded.
However, other parties, such as law enforce‐
ment, could combine the EDR data with the
type of personally identifying data routinely ac‐
quired during a crash investigation.
To read data recorded by an EDR, special
equipment is required, and access to the vehi‐
cle or the EDR is needed. In addition to the ve‐
hicle manufacturer, other parties, such as law
enforcement, that have the special equipment,
can read the information if they have access to
the vehicle or the EDR.
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Airbag systemAirbag system and belt tensioner are
defective.
Have the vehicle checked by the serv‐
ice center immediately.
Parking brake The parking brake is set.
For additional information, refer to Release
parking brake, refer to page 70.
Brake system Continue to drive moderately.
Have the vehicle checked by the serv‐
ice center immediately.
Front-end collision warning Illuminated: advance warning is issued,
e.g., when there is the impending dan‐
ger of a collision or the distance to the
vehicle ahead is too small.
Increase distance.
Flashing: acute warning of the imminent dan‐
ger of a collision when the vehicle approaches
another vehicle at a relatively high differential
speed.
Intervention by braking or make an evasive ma‐
neuver.
Pedestrian warning If a collision with a person detected in
this way is imminent, the symbol lights
up and a signal sounds.Orange lights
Active Cruise Control The number bars shows the selected
distance from the vehicle driving
ahead.
For additional information, refer to Active
Cruise Control with Stop & Go function, ACC,
refer to page 110.
Vehicle detection, Active Cruise Control Illuminated: vehicle driving ahead de‐
tected.
Flashing: the conditions are not ade‐
quate for operating the system.
The system was deactivated but applies the
brakes until you actively resume control by
pressing on the brake pedal or accelerator
pedal.
Yellow lights
Anti-lock Braking System ABS Avoid abrupt braking if possible. Brak‐
ing force boost in some cases defec‐
tive. Stop carefully. Take into account
longer brake travel. Have this checked
by the service center immediately.
DSC Dynamic Stability Control Flashing: DSC controls the drive and
braking forces. The vehicle is stabi‐
lized. Reduce speed and adapt driving
profile to the driving circumstances.
Illuminated: DSC failed. Have the system
checked by the service center.
For additional information, refer to Dynamic
Stability Control DSC, refer to page 107.Seite 79DisplaysControls79
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DSC Dynamic Stability Control is
deactivated or DTC Dynamic Traction
Control is activated
Dynamic Stability Control DSC is
switched off or Dynamic Traction Con‐
trol DTC is switched on.
For additional information, refer to Dynamic
Stability Control, refer to page 107, and Dy‐
namic Traction Control, refer to page 108.
Flat Tire Monitor FTM The Flat Tire Monitor signals a loss of
tire inflation pressure in a tire.
Reduce your speed and stop cau‐
tiously. Avoid sudden braking and steering ma‐
neuvers.
For more information, see Flat Tire Monitor, re‐
fer to page 99.
Tire Pressure Monitor TPM Illuminated: the Tire Pressure Monitor
signals a loss of tire inflation pressure
in a tire.
Reduce your speed and stop cautiously. Avoid
sudden braking and steering maneuvers.
Flashing and then continuously illuminated: no
flat tire or loss of tire inflation pressure can be
detected.▷Interference through systems or devices
with the same radio frequency: after leav‐
ing the area of the interference, the system
automatically becomes active again.▷TPM could not conclude the reset: perform
the reset of the system again.▷A wheel without TPM electronics is fitted:
have the service center check it if needed.▷Malfunction: have the system checked by
your service center.
For more information, see Tire Pressure Moni‐
tor, refer to page 96.
Steering system
Steering system in some cases defec‐tive.
Have the steering system checked by
the service center.
Engine functions Have the vehicle checked by the serv‐ice center.
For additional information, refer to On-
board Diagnostics socket, refer to page 189.
Green lights Turn signal Turn signal on.
Unusually rapid flashing of the indicator
lamp indicates that a turn signal bulb
has failed.
For additional information, refer to Turn signal,
refer to page 71.
Parking lights, headlight control Parking lights or headlights are acti‐
vated.
For additional information, refer to
Parking lights/low beams, headlight control, re‐
fer to page 90.
Cruise control The system is switched on. It maintains
the speed that was set using the con‐
trol elements on the steering wheel.
Blue lights
High beams High beams are activated.Seite 80ControlsDisplays80
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Status control displayTire and system status are indicated by the
color of the wheels and a text message on the
Control Display.
All wheels green System is active and will issue a warning rela‐
tive to the tire inflation pressures stored during
the last reset.
One wheel is yellow A flat tire or major drop in inflation pressure in
the indicated tire.
All wheels are yellow A flat tire or major drop in inflation pressure in
several tires.
Wheels, gray The system cannot detect a flat tire. Reasons
for this may be:▷The system is being reset.▷Malfunction.
Status information
The status control display additionally shows
the current tire inflation pressures and, de‐
pending on the model, tire temperatures. It
shows the actual values read; they may vary depending on driving style or weather condi‐
tions.
Carry out reset Reset the system after each adjustment of the
tire inflation pressure and after every tire or
wheel change.
On the Control Display and on the vehicle:
1."Vehicle info"2."Vehicle status"3. "Perform reset"4.Switch on drive readiness – do not drive
off.5.Reset tire inflation pressure:"Perform
reset".6.Drive away.
The tires are shown in gray and the status is
displayed.
After driving faster than 19 mph/30 km/h for a
short period, the set tire inflation pressures are
accepted as reference values. The reset is
completed automatically while driving.
The progress of the reset is displayed.
After a successfully completed Reset, the
wheels on the Control Display are shown in
green and "Tire Pressure Monitor (TPM)
active" is displayed.
You may interrupt this trip at any time. When
you continue the reset resumes automatically.
Low tire pressure message 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.▷No reset was performed for the system.
The system therefore issues a warning
based on the tire inflation pressures before
the last reset.1.Reduce your speed and stop cautiously.
Avoid sudden braking and steering maneu‐
vers.2.Identify the damaged wheel. Do so by
checking the tire inflation pressure using
the Mobility System. To correct the tire in‐
flation pressure, refer to page 180.3.Repair flat tire with the Mobility System, re‐
fer to page 178, or replace the damaged
wheel.
If a Mobility System is not available, contact
the service center.
A low tire inflation pressure might turn on DSC
Dynamic Stability Control.
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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.
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.
Thus a warning might not be issued or be is‐
sued late.
E. g. the following situations may not be de‐
tected:▷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.
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
deactivated, e.g. DSC OFF.▷If the field of view of the camera in the mir‐
ror is dirty or obscured.▷Up to 10 seconds after drive readiness is
established.▷During calibration of the camera immedi‐
ately after vehicle shipment.▷If there is constant blinding effects be‐
cause of oncoming light, e. g., from the sun
low in the sky.Seite 103SafetyControls103
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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.
Switching on/off manually Press button briefly:
▷The menu for the intelligent safety
system is displayed. The systems
are individually switched off ac‐
cording to their respective set‐
tings.▷LED lights up orange or goes out respec‐
tive to their individual settings.
Adjust as needed. Individual settings are
stored for the profile currently in use.
Press button again:
▷All Intelligent Safety systems are
activated.▷The LED lights up green.
Hold down button:
▷All Intelligent Safety systems are
turned off.▷The LED goes out.
Warning with braking function
Display
If a collision with a person detected in this way
is imminent, a warning symbol appears on the
instrument cluster.
The red symbol is displayed and a sig‐
nal sounds.
Intervene immediately by braking or make an
evasive maneuver.
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.
The braking intervention can be interrupted by
stepping on the accelerator pedal or by ac‐
tively moving the steering wheel.
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Driving stability control systemsVehicle features and optionsThis chapter describes all standard, country-
specific and optional features offered with the
series. It also describes features that are not
necessarily available in your car, e. g., due to
the selected options or country versions. This
also applies to safety-related functions and
systems. The respectively applicable country
provisions must be observed when using the
respective features and systems.
Antilock Brake System ABS ABS prevents locking of the wheels during
braking.
The vehicle contains its steering power even
during full brake applications, thus increasing
active safety.
ABS is ready when car is ready to drive.
Brake assistant When you apply the brakes rapidly, this system
automatically produces the greatest possible
braking force boost. It reduces the braking dis‐
tance to a minimum during emergency stop.
This system utilizes all of the benefits provided
by ABS.
Do not reduce the pressure on the brake pedal
for the duration of the emergency stop.
Energy recovery In the event of danger, such as with locked
wheels, energy recovery is reduced in order to
prevent unstable driving situations.Always be ready to apply the brake
Always be ready to apply the brake, be‐
cause without energy recovery there is also no
braking action through the electric drive unit.
The vehicle could roll further than anticipated.
This may constitute a danger for other traffic.◀
DSC Dynamic Stability Control
The concept DSC prevents traction loss in the power
wheels when driving off and accelerating.
DSC also recognizes unstable vehicle condi‐
tions such as fishtailing or nose-diving. Within
the physical limits DSC helps to keep the vehi‐
cle on a steady course by reducing engine
speed and by applying brakes to the individual
wheels.
Note 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, not
even with DSC.
Therefore, do not reduce the additional safety
margin by driving in a risky manner.◀
Do not deactivate DSC when driving with
roof load
Do not deactivate Dynamic Stability Control DSC when driving with roof load, e.g. roof-
mounted luggage rack.
Otherwise, driving safety is not given in driv‐
ing-critical situation due to the elevated center
of gravity.◀Seite 107Driving stability control systemsControls107
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Indicator/warning lightsThe indicator lamp flashes: DSC con‐
trols the drive and braking forces.
The indicator lamp lights up: DSC has
failed.
DTC Dynamic Traction
Control
The concept The DTC system is a version of the DSC whereforward momentum is optimized.
The system ensures maximum headway on
special road conditions or loose road surfaces,
e.g., unplowed snowy roads, but with some‐
what limited driving stability.
Activating the Dynamic Traction Control DTC
provides maximum traction. Driving stability is
limited during acceleration and when driving in
curves.
Therefore drive with appropriate 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 freeing vehicle from deep snow or
driving off from loose grounds.▷When driving with snow chains.
Deactivating/activating DTC Dynamic
Traction Control
Activating DTC
1."Settings"2."Traction control"3."TRACTION"
TRACTION and the DSC OFF indicator
lamp lights up.Deactivating DTC1."Settings"2."Traction control"3."Normal"
TRACTION and the DSC OFF indicator
lamp go out.
When drive readiness is switched on, DTC is
automatically deactivated.
Driving Dynamics Control The conceptThe Driving Dynamics Control helps to fine-
tune the vehicle's settings and features. Vari‐
ous programs can be selected for this purpose.
Overview
Button in the vehicle
Operating the programs
Driving Dynamics ControlProgramCOMFORT
ECO PRO
ECO PRO+
COMFORT
For balanced tuning.
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