It detects a pressure loss in a tire by comparing
the rotational speeds of the individual wheels
while moving.
In the event of a pressure loss, the diameter
and therefore the rotational speed of the corre‐
sponding wheel change. This is detected and
reported as a flat tire.
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 175, 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 98CONTROLSSafety98
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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 107Driving stability control systemsCONTROLS107
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Stowing the Mobility System1.Disconnect the connection hose of the seal‐
ant bottle from the wheel.2.Disconnect the connection hose from the
sealant bottle.3.Wrap the empty sealant bottle and connec‐
tion hose in suitable material to avoid dirty‐
ing the cargo area.4.Stow the Mobility System back in the vehi‐
cle.
Distributing the sealant
Immediately drive to ensure that the sealant is
evenly distributed in the tire.
Do not exceed a speed of .
Do not drop below if possible.
Correcting the tire inflation pressure
1.Stop at a suitable location.2.Screw the connection hose onto the tire
valve stem.3.Attach the connection hose directly to the
compressor.4.Insert the connector into a power socket in‐
side the vehicle.5.Correct the tire inflation pressure to 2.5 bar.▷Increase pressure: with the ignition
turned on or the engine running, switch
on the compressor.▷To reduce the pressure: press the but‐
ton on the compressor.
Continuing the trip
Do not exceed the maximum permissible speed
of 50 mph/80 km/h.
Reinitialize the Flat Tire Monitor, refer to
page 97.
Reinitialize the Tire Pressure Monitor, refer to
page 94.
Replace the defective tire and the sealant bot‐
tle of the Mobility System as soon as possible.
Snow chains
Fine-link snow chains Only certain types of fine-link snow chains have
been tested by the manufacturer of your vehi‐
cle, 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 front wheels, equipped
with the tires of the following size:
▷175/65 R 15.Seite 178MOBILITYWheels and tires178
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▷175/60 R 16.
Follow the chain manufacturer's instructions.
Make sure that the snow chains are always suf‐
ficiently tight. Retighten as needed according
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.
Seite 179Wheels and tiresMOBILITY179
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Remote control, malfunc‐tion 38
Remote control, replacing the battery 34
Remote control, univer‐ sal 133
Replacement fuse 199
Replacing parts 188
Replacing the battery, remote control 34
Replacing wheels/tires 173
Reporting safety defects 9
RES button 112
Reserve warning, refer to Range 75
Reset, Tire Pressure Monitor TPM 95
Retaining straps, securing cargo 152
Retreaded tires 174
Right-hand traffic, lamp set‐ ting 89
Roadside parking lamps 86
RON recommended fuel grade 166
Roof load capacity 214
Roof-mounted luggage rack 152
Rope for tow-starting/ towing 205
RSC Run Flat System Compo‐ nent, refer to Run-flat
tires 175
Rubber components, care 209
Run-flat tires 175
S
Safe braking 149
Safety 7
Safety belt reminder for driv‐ er's seat and front passenger
seat 50
Safety belts 49
Safety belts, care 209 Safety systems, airbags 91
Saving fuel 155
Screen, refer to Control Dis‐ play 18
Screwdriver 188
Screw thread for tow fit‐ ting 205
Sealant 175
Seat belts, refer to Safety belts 49
Seat heating, front 49
Seating position for chil‐ dren 55
Seats 47
Selection list in instrument cluster 78
Selector lever, automatic transmission 68
Sensors, care 210
Service and warranty 8
Service requirements, Condi‐ tion Based Service CBS 186
Service requirements, dis‐ play 76
Service, Roadside Assis‐ tance 202
Settings, locking/unlocking 42
Settings, mirrors 52
Settings on Control Display 81
Shifting, automatic transmis‐ sion 67
Shifting, manual transmis‐ sion 67
Shift paddles on steering wheel 69
Side airbags 91
Signaling, horn 14
Signals when unlocking 42
Sitting safely 47
Size 214
Slide/tilt glass roof 45
Snow chains 178
Socket 137
Socket, OBD Onboard Diag‐ nostics 186
Soot particulate filter 149 SOS button 201
Spare fuse 199
Specified engine oil types 184
Speed, average 80
Speed limit detection, on‐ board computer 80
Speed limiter, display 77
Speed Limit Information 77
Speed warning 81
Split screen 23
Sport automatic transmis‐ sion 69
Sport displays 80
SPORT program, Dynamic Driving Control 108
Sport program, transmis‐ sion 68
Stability control systems 106
Standard view, Head-up Dis‐ play 84
Start/stop, automatic func‐ tion 61
Start/Stop button 59
Start function during malfunc‐ tion 35
Starting the engine 60
Status display, tires 94
Status information, onboard monitor 23
Status of Owner's Manual 6
Steering wheel, adjusting 54
Steptronic, automatic trans‐ mission 67
Stopping the engine 60
Storage compartments 141
Storage, tires 174
Storing the vehicle 210
Summer tires, tread 172
Supplementary text mes‐ sages 73
Switch for Dynamic Driv‐ ing 108
Switch-on times, parked-car ventilation 132
Switch, refer to Cockpit 14
Symbols 6 Seite 226REFERENCEEverything from A to Z226
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