
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 signaling of a flat tire is not en‐
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.1."Vehicle Info"2."Vehicle status"3.  "Flat Tire Monitor (FTM)"
The status is displayed.
Initialization
The 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."Vehicle Info"2."Vehicle status"3.  "Perform reset"4.Start the engine - do not drive away.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  222, 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.Seite 110ControlsSafety110
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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 con‐
trols 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
reduced during acceleration and when driving in bends.
Stabilizing interventions by the Integral Active
Steering system are only performed by the rear axle steering.
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.
Steering and, depending on the equipment,
the chassis are adjusted for sporty driving.
Activating DSC Press the button.
DSC OFF and the DSC OFF indicator
lamp go out.Indicator/warning lamps
When DSC is deactivated, DSC OFF is dis‐
played in the instrument cluster.
The indicator lamp lights up: DSC is
deactivated.
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.
Driving stability is limited 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.
Seite 130ControlsDriving stability control systems130
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Integral Active SteeringThe concept
Integral Active Steering is a combination of Ac‐
tive Steering and rear axle steering.
Active Steering varies the steering angle of the
wheels in relation to the steering wheel move‐
ment as a function of the speed.
At speeds up to approx. 37 mph/60 km/h, e.g.,
in curves, the steering angle is increased, i.e.,
steering becomes more direct.
The rear axle steering acts to increase maneu‐
verability by turning the rear wheels slightly in
a direction opposite to the front wheels.
At higher speeds, the steering angle is increas‐
ingly reduced.
The rear wheels are turned to the same angle
as the front wheels.
In critical situations, Integral Active Steering
can specifically steer the front and rear wheels
to stabilize the vehicle before the driver inter‐
venes, e.g., when braking where road condi‐
tions differ on the left and right sides of the ve‐
hicle.
InitializingIn rare cases, it may become necessary to initi‐
alize the Integral Active Steering.
The warning lamp lights up. A Check
Control message is displayed.1.With the engine running, turn the steering
wheel all the way to the left and right sev‐
eral times in a uniform manner until the
warning lamp disappears.2.Have the system checked if the warning
lamp does not go out after moving the
steering wheel approx. 6 times or if the
steering wheel is at an angle.Using snow chains
Note When snow chains are in use, refer to
page  223, rear wheel steering is deactivated.
Programs The system offers several different programs.
The programs can be selected via the Driving
Dynamics Control, refer to page  133.
SPORT
Consistently sporty tuning of the Integral Ac‐
tive Steering for greater driving agility.
COMFORT Balanced tuning of the Integral Active Steering
for optimal traveling comfort.
Malfunction
In the event of a malfunction, the steering
wheel must be turned further, while the vehicle
responds more sensitively to steering wheel
movements in the higher speed range.
The stability-enhancing intervention may be
deactivated.
Proceed cautiously and drive defensively.
Have the system checked.
Driving Dynamics Control The conceptThe Driving Dynamics Control can be used to
adjust the driving dynamics of the vehicle. For
this purpose various programs are available for
selection that are activated via the two buttons
of the Driving Dynamics Control and the DSC
OFF-button.Seite 133Driving stability control systemsControls133
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Snow chains
Fine-link snow chains Only certain types of fine-link snow chains
have been tested by the manufacturer of the
vehicle, classified as road-safe and approved.
Information about the approved snow chains
are available from the service center.
Use Use only in pairs on the rear wheels, equipped
with the tires of the following size:▷225/55 R 17.▷245/45 R 18.▷245/40 R 19.
Follow the chain manufacturer's instructions.
Make sure that the snow chains are always
sufficiently tight. Retighten as needed accord‐
ing to the chain manufacturer's instructions.
Do not initialize the Flat Tire Monitor after
mounting snow chains, as doing so may result
in incorrect readings.
Do not initialize the Tire Pressure Monitor after
mounting snow chains, as doing so may result
in incorrect readings.
When driving with snow chains, briefly activate
Dynamic Traction Control if necessary.
Maximum speed with snow chains Do not exceed a speed of 30 mph/50 km/h
when using snow chains.
Snow chain detection
The concept When using snow chains, settings should be
made via the iDrive for the snow chains being
applied.
The snow chain detection system supports
you by automatically showing the detected
state on the Control Display.
When snow chains are in use, the rear axle
steering of the Integral Active Steering is deac‐
tivated automatically.
At speeds above the maximum permitted
speed with snow chains of 30 mph/50 km/h,
the rear axle steering is activated again auto‐
matically.
Activating the status1."Settings"2."Tire chains"3."Tire chains installed"
Automatic detection If functioning properly:
▷Snow chains are mounted. The setting is
not activated  
  .
After you drive a short distance, a Check
Control message is shown and the state is
activated automatically.
Confirm the automatic activation.
▷Snow chains are not mounted. The setting
is activated  
  .
At speeds above 30 mph/50 km/h, a Check
Control message is displayed. Deactivate
the status manually.
If not functioning properly:
▷Snow chains are mounted. The setting is
not activated  
  .
A Check Control message is not displayed.
The automatic detection system is mal‐
functioning. Activate the status manually.
Activating/deactivating rear axle
steering
If the status indicating that snow chains are in
use is activated, the rear axle steering is deac‐
tivated automatically.
At speeds above 30 mph/50 km/h, the rear axle
steering is activated again, even though snow
chains are in use.
Seite 223Wheels and tiresMobility223
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Roller sunblinds 44 
Roll stabilization, refer to Adaptive Drive  132 
Roll stabilization, refer to Dy‐ namic Drive  132 
RON recommended fuel grade  204 
Roof load capacity  252 
Roof-mounted luggage rack  191 
Rope for tow-starting/ towing  244 
RSC Run Flat System Com‐ ponent, refer to Run-flat
tires  222 
Rubber components, care  248 
Run-flat tires  222 
S Safe braking  188 
Safety  7 
Safety belt reminder for driv‐ er's seat and front passen‐
ger seat  52 
Safety belts  51 
Safety belts, care  248 
Safety Package, refer to Ac‐ tive Protection  126 
Safety switch, windows  44 
Safety systems, airbags  103 
Saving fuel  193 
Screen, refer to Control Dis‐ play  16 
Screwdriver, see Onboard ve‐ hicle tool kit  233 
Screw thread for tow fit‐ ting  245 
Seat belts, refer to Safety belts  51 
Seat heating, front  50 
Seat heating, rear  50 
Seating position for chil‐ dren  59 Seat, mirror, and steering
wheel memory  54 
Seats  47 
Seat ventilation, front  51 
Selection list in instrument cluster  91 
Selector lever, automatic transmission  74 
Sensors, care  249 
Service and warranty  8 
Service requirements, Condi‐ tion Based Service
CBS  231 
Service requirements, dis‐ play  88 
Service, Roadside Assis‐ tance  241 
Services, ConnectedDrive 
Settings, locking/unlock‐ ing  41 
Settings on Control Dis‐ play  94 
Settings, storing for seat, mir‐ rors, steering wheel  54 
Shifting, automatic transmis‐ sion  74 
Shifting, manual transmis‐ sion  73 
Shift Lights  84 
Shift paddles on steering wheel  76 
Shoulder support  50 
Side airbags  103 
Side View  154 
Signaling, horn  12 
Signals when unlocking  41 
Sitting safely  47 
Size  252 
Ski bag  177 
Slide/tilt glass roof  45 
Smallest turning circle  252 
Smoker's package  172 
Snow chains  223 
Socket  174 
Socket, OBD Onboard Diag‐ nostics  231 Soot particulate filter  187 
SOS button  240 
Spare fuse  239 
Speaker lighting  102 
Specified engine oil types  228 
Speed, average  93 
Speed limit detection, on‐ board computer  93 
Speed limiter, display  90 
Speed Limit Information  90 
Speed warning  94 
Split screen  21 
SPORT+ - program, Dynamic Driving Control  134 
Sport automatic transmis‐ sion  76 
Sport displays, torque dis‐ play, performance dis‐
play  94 
SPORT program, driving dy‐ namics  134 
Sport program, transmis‐ sion  75 
Stability control systems  129 
Start/stop, automatic func‐ tion  65 
Start/Stop button  63 
Start function during malfunc‐ tion  31 
Starting the engine  64 
Status control display, tires  106 
Status information, iDrive  20 
Status of Owner's Manual  6 
Steering, Integral Active Steering  133 
Steering wheel, adjusting  57 
Steering wheel heating  58 
Steering wheel memory  54 
Steptronic, automatic trans‐ mission  74 
Stopping the engine  65 
Storage compartment, re‐ mote control  182 
Storage compartments  179 Seite 263Everything from A to ZReference263
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