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.
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.
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.
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"
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."Reset"4.Start the engine - do not drive away.5.Start the initialization with "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 warning lamps come on in yellow
and red. A message appears on the
Control Display. In addition, a signal
sounds.
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.Seite 93SafetyControls93
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Functional requirementIn order to assure the reliable reporting of a flat
tire, the system must be reset while all tire in‐
flation pressures are correct.
Always use wheels with TPM electronics. Oth‐
erwise, the system may malfunction.
Reset the system after each correction of the
tire inflation pressure and after every tire or
wheel change.
System limits Sudden tire damage
Sudden serious tire damage caused by
external influences cannot be indicated in ad‐
vance.◀
The system does not function properly if it has
not been reset, e.g., it may identify a tire as flat
in spite of the fact that the tire is filled to the
correct inflation pressure.
The system is deactivated and is unable to de‐
tect flat tires if a wheel not equipped with TPM
electronics has been mounted, e.g., a compact
wheel, or if TPM is experiencing temporary in‐
terference from other systems or devices that
use the same frequency.
Status display1. Press the button. The start menu
opens.2."Vehicle Info"3."Vehicle status"4."TPM"5.The status is displayed.
Status indicator on the Control
Display
The tire and system status is indicated by the
color of the tires.
TPM takes into account that tire pressures
change while the vehicle is being driven. The
tire pressures do not need to be corrected un‐
less the TPM instructs you to do so by means
of color indicators.
Green
The tire inflation pressure corresponds to the
established target value.
"TPM active" appears on the Control Display.
One wheel is yellow
There is a flat tire or substantial loss of tire
pressure in the indicated tire. A message ap‐ pears on the Control Display.
All wheels are yellow▷There is a flat tire or substantial loss of tire
pressure in several tires.▷The system was not reset after a wheel
change and thus issues a warning based
on the inflation pressures initialized last.▷A flat tire in one or more tires while the sys‐
tem is being reset.
A message appears on the Control Display.
Gray The system cannot detect a flat tire.
Possible reasons for this:
▷TPM is being reset.▷Temporary malfunction caused by systems
or devices using the same radio frequency.▷Malfunction.
Resetting the system
Reset the system after each correction of the
tire inflation pressure and after every tire or
wheel change.
1. Press the button. The start menu
opens.2."Vehicle Info"3."Vehicle status"Seite 95SafetyControls95
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4."Reset"5.Start the engine, but do not start driving.6.Start the initialization with "Reset".7.Drive away. The tires are shown in gray and
"Resetting TPM..." is displayed.
After driving a few minutes, the set inflation
pressures in the tires are accepted as the tar‐
get values to be monitored. The system reset
is completed during your drive, and can be in‐
terrupted at any time. When driving resumes,
the reset is continued automatically. On the
Control Display, the tires are shown in green
and "TPM active" is displayed again.
If a flat tire is detected while the system is re‐
setting and determining the inflation pres‐
sures, all tires on the Control Display are dis‐
played in yellow. The message "Low tire!" is
shown.
Low tire pressure message The warning lamps come on in yellow
and red. A message appears on the
Control Display. In addition, a signal
sounds.
▷There is a flat tire or a major loss in tire in‐
flation pressure.▷The system was not reset after a wheel
change and thus issues warnings based on
the inflation pressures initialized last.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 232, 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.
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.
If the tire inflation pressure in all four tires
is correct, the Tire Pressure Monitor may
not have been initialized. In this case, initi‐
alize the system.
If an identification is not possible, please
contact the service center.2.Rectify the flat tire.
The use of tire sealant can damage the
TPM electronics. In this case, have the
electronics checked at the next opportu‐
nity and have them replaced if necessary.
Run-flat tires
You can continue driving with a damaged tire
at speeds up to 50 mph/80 km/h.
Continued driving with a flat tire If continuing to drive with a damaged tire:
1.Avoid sudden braking and steering maneu‐
vers.2.Do not exceed a speed of 50 mph/80 km/h.3.Check the air pressure in all four tires at
the next opportunity.Seite 96ControlsSafety96
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If the tire inflation pressure in all four tires
is correct, the Tire Pressure Monitor may
not have been initialized. In this case, initi‐
alize the system.
Possible driving distance with complete loss of
tire inflation pressure:
The possible driving distance after a loss of tire
inflation pressure depends on the cargo load
and the driving style and conditions.
For a vehicle containing an average load, the
possible driving distance is approx.
50 miles/80 km.
When the vehicle is driven with a damaged tire,
its handling characteristics change, e.g., re‐
duced lane stability during braking, a longer
braking distance, and altered self-steering
properties. Adjust your driving style accord‐
ingly. Avoid abrupt steering maneuvers or driv‐
ing over obstacles, e. g., curbs, potholes, etc.
Because the possible driving distance de‐
pends on how the vehicle is used during the
trip, the actual distance may be smaller or
greater depending on the driving speed, road
conditions, external temperature, cargo load,
etc.
Continued driving with a flat tire
Drive moderately and do not exceed a
speed of 50 mph/80 km/h.
A loss of tire inflation pressure results in a
change in the handling characteristics, e.g., re‐
duced lane stability during braking, a longer
braking distance and altered self-steering
properties.◀
Final tire failure
Vibrations or loud noises while driving
can indicate the final failure of the tire. Reduce
speed and stop; otherwise, pieces of the tire
could come loose and cause an accident. Do
not continue driving, and contact your service
center.◀
Message when not reset
The warning lamp lights up yellow. A
message appears on the Control Dis‐
play. The system detected a wheel
change but was not reset. Warnings regarding
the current tire inflation pressure are not relia‐
ble.
Check the tire inflation pressure and reset the
system, refer to page 95.
Malfunction The small warning lamp flashes in
yellow and then lights up continu‐
ously; the larger warning lamp comes
on in yellow. On the Control Display,
the tires are shown in gray and a message ap‐
pears. No flat tire can be detected.
Display in the following situations:▷A wheel without TPM electronics is fitted:
have the service center check it if neces‐
sary.▷Malfunction: have the system checked by
your service center.▷TPM could not be fully reset. Reset the
system again.
The small warning lamp flashes in yellow and then lights up continu‐
ously; the larger warning lamp comes
on in yellow. The tires are displayed
in gray on the Control Display. No flat tire can
be detected.
Display in the following situations:
▷Disturbance by systems or devices with
the same radio frequency. After leaving the
area of the disturbance, the system auto‐
matically becomes active again.
Declaration according to NHTSA/
FMVSS 138 Tire Pressure Monitoring
Systems
Each tire, including the spare (if provided)
should be checked monthly when cold and in‐
Seite 97SafetyControls97
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Tire pressure monitoring, re‐fer to FTM 92
Tire Pressure Monitor TPM 94
Tire Pressure Monitor TPM– Resetting the system 95– System limitations 95– Warning lamp 96
Tire Quality Grading 231
Tires, changing 233
Tires, flat tire 246
Tire size 230
Tires, pressure loss 96
Tires, pressure monitoring, refer to Tire Pressure Moni‐
tor TPM 94
Tires, run-flat tires 233
Tire tread 232
Toll roads, route 149
Tone 160
Tool kit, refer to Onboard ve‐ hicle tool kit 243
Tools, refer to Onboard vehi‐ cle tool kit 243
Towing 252
Town/city, navigation 141
Tow-starting 252
TPM, refer to Tire Pressure Monitor TPM 94
Traction control 100
TRACTION program, Dy‐ namic Driving Control 101
Traffic bulletins, naviga‐ tion 153
Transmission
– 7-gear automatic transmis‐
sion with dual clutch 65– 8-gear automatic transmis‐
sion 63– Manual transmission 63– Unlocking transmission lock
manually, for 7-gear auto‐
matic transmission 69
Transmission lock, unlocking
manually 69
Transmission lock, unlocking
manually, with 7-gear auto‐
matic transmission 69
Transmission positions– 7-gear automatic transmis‐
sion 66– 8-gear automatic transmis‐
sion 63
Transporting children
safely 53
Tread depth, tires 232
Tread, tires 232
Treble, tone 160
Trip-distance counter, refer to Trip odometer 71
Triple turn signal activa‐ tion 60
Trip odometer 71
Trips, planning 147
Trunk lid
– Comfort Access 38– Emergency unlocking 37– Opening from the inside 36– Opening from the out‐
side 36– Remote control 33
Turning circle, refer to Dimen‐
sions 262
Turn signal
– Indicator/warning lamp 14
Turn signals 60
Turn signals
– Bulb replacement, front 244– Triple turn signal activa‐
tion 60
U
Uniform Tire Quality Grading/ UTQG 231
Unintentional alarms 40
Units
– Average fuel consump‐
tion 76– Temperature 76
Units of measure, changing
on Control Display 76
Universal Garage Door
Opener 114
Universal remote control 114
Unlocking– From the inside 36– From the outside 32– Hood 236– Setting the unlocking char‐
acteristics 32– Trunk lid 38– Without remote control, re‐
fer to Comfort Access 37
Updates made after the edito‐
rial deadline 6
Update, software 187
Upholstery care 257
USB audio interface 181
USB interface 122
V
Vacuum cleaner, connecting, refer to Connecting electri‐
cal devices 118
Vehicle
– Battery replacement 247– Breaking in 128– Cargo 262– Dimensions, refer to Dimen‐
sions 262– Identification number 192– Identification number, refer
to Engine compartment 235– Weight 262
Vehicle care 256
Vehicle care, refer to Care 255
Vehicle equipment 6
Vehicle jack 246
Vehicle paint 256
Vehicle storage 258
Vehicle, switching off 57
Vehicle wash 255
Ventilation
– Draft-free 109, 113– Refer to Climate control 107
Vents, refer to Air vents 107
Seite 282ReferenceEverything from A to Z282
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