If an identification is not possible, please
contact the service center.2.Rectify the flat tire.
Use of tire sealant, e.g., the Mobility Sys‐
tem, may damage the TPM wheel elec‐
tronics. In this case, have the electronics
checked at the next opportunity and have
them replaced if necessary.
Run-flat tires
Maximum speed
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.
If the tire inflation pressure in all four tires
is correct, it is possible that a reset was not
carried out for the Tire Pressure Monitor. In
that case, carry out a reset.
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.◀
Required inflation pressure check
message
A Check Control message is displayed.
Check the tire inflation pressure and carry out
a reset of the system.
In some cases, a wheel was changed without
having carried out a reset.
System limits
The system does not function properly if a re‐
set has not been carried out, e.g., a flat tire is
reported even though the tire inflation pres‐
sures are correct.
The tire pressure depends on the temperature
of the tire. If the tire temperature rises, e.g.,
due to driving or because of the heat of the
Sun, the tire inflation pressure increases also.
The tire pressure is reduced when the tire
temperature falls again. This behavior may
cause a warning to be issued if temperatures
fall very sharply.Seite 101SafetyControls101
Online Edition for Part no. 01 40 2 926 810 - X/13
MalfunctionThe yellow warning lamp flashes andthen lights up continuously. A Check
Control message is displayed. No flat
tire or loss of tire pressure 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 was unable to complete the reset.
Reset the system again.▷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
System
Each tire, including the spare (if provided)
should be checked monthly when cold and in‐
flated to the inflation pressure recommended
by the vehicle manufacturer on the vehicle
placard or tire inflation pressure label. (If your
vehicle has tires of a different size than the size
indicated on the vehicle placard or tire inflation
pressure label, you should determine the
proper tire inflation pressure for those tires.)
As an added safety feature, your vehicle has
been equipped with a tire pressure monitoring
system (TPMS) that illuminates a low tire pres‐
sure telltale when one or more of your tires is
significantly under-inflated. Accordingly, when
the low tire pressure telltale illuminates, you
should stop and check your tires as soon as
possible, and inflate them to the proper pres‐
sure. Driving on a significantly under-inflated
tire causes the tire to overheat and can lead to
tire failure. Under-inflation also reduces fuel ef‐
ficiency and tire tread life, and may affect the
vehicle's handling and stopping ability. Please
note that the TPMS is not a substitute for
proper tire maintenance, and it is the driver's
responsibility to maintain correct tire pressure,
even if under-inflation has not reached the
level to trigger illumination of the TPMS low
tire pressure telltale. Your vehicle has also
been equipped with a TPMS malfunction indi‐
cator to indicate when the system is not oper‐
ating properly. The TPMS malfunction indica‐
tor is combined with the low tire pressure
telltale. When the system detects a malfunc‐
tion, the telltale will flash for approximately one
minute and then remain continuously illumi‐
nated. This sequence will continue upon sub‐
sequent vehicle start-ups as long as the mal‐
function exists. When the malfunction indicator
is illuminated, the system may not be able to
detect or signal low tire pressure as intended.
TPMS malfunctions may occur for a variety of
reasons, including the installation of replace‐
ment or alternate tires or wheels on the vehicle
that prevent the TPMS from functioning prop‐
erly. Always check the TPMS malfunction tell‐
tale after replacing one or more tires or wheels
on your vehicle to ensure that the replacement
or alternate tires and wheels allow the TPMS
to continue to function properly.
FTM Flat Tire Monitor The conceptThe system detects a pressure loss on the ba‐sis of speed differences between the individual
wheels while driving.
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.
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‐Seite 102ControlsSafety102
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Park Distance ControlPDC 130
Parked-car ventilation 149
Parked vehicle, condensa‐ tion 168
Parking aid, refer to PDC 130
Parking assistant 138
Parking brake 67
Parking lamps 91
Particulate filter 167
Passenger side mirror, tilting downward 57
Pathway lines, rearview cam‐ era 134
PDC Park Distance Con‐ trol 130
Pedestrian warning with city braking function 110
Personal Profile 35
Pinch protection system, glass sunroof 48
Pinch protection system, win‐ dows 46
Plastic, care 225
Power failure 215
Power sunroof, glass 47
Power windows 45
Pressure, tire air pres‐ sure 187
Pressure warning FTM, tires 102
Profile, refer to Personal Pro‐ file 35
Programmable memory but‐ tons, iDrive 24
Protective function, glass sunroof 48
Protective function, win‐ dows 46
Push-and-turn switch, refer to Controller 18, 19
R Radiator fluid 203 Radio-operated key, refer to
Remote control 34
Radio ready state 64
Radio, see user's manual for Navigation, Entertainment
and Communication
Rain sensor 69
Rear lamps 212
Rear socket 156
Rearview camera 133
Rearview mirror 56
Rear window de‐ froster 145, 148
Recirculated-air filter 149
Recirculated-air mode 145, 148
Recommended tire brands 196
Refueling 180
Remaining range 81
Remote control/key 34
Remote control, malfunc‐ tion 39
Remote control, univer‐ sal 151
Replacement fuse 215
Replacing parts 206
Replacing wheels/tires 195
Reporting safety defects 9
RES button 124
Reserve warning, refer to Range 81
Reset, Tire Pressure Monitor TPM 100
Retaining straps, securing cargo 170
Retreaded tires 196
Roadside parking lamps 92
Roller sunblinds 47
RON gasoline quality 182
Roof load capacity 230
Roof-mounted luggage rack 171
Rope for tow-starting/ towing 221 RSC Run Flat System Com‐
ponent, refer to Run-flat
tires 197
Rubber components, care 225
Run-flat tires 197
S Safe braking 167
Safety 7
Safety belt reminder for driv‐ er's seat and front passen‐
ger seat 53
Safety belts 52
Safety belts, care 225
Safety switch, windows 46
Safety systems, airbags 96
Saving fuel 172
Screen, refer to Control Dis‐ play 18
Screwdriver 206
Screw thread for tow fit‐ ting 222
Seat and mirror memory 55
Seat belts, refer to Safety belts 52
Seat heating, front 52
Seat heating, rear 52
Seating position for chil‐ dren 59
Seats 49
Selection list in instrument cluster 85
Selector lever, automatic transmission 72
Sensors, care 226
Service and warranty 8
Service requirements, Condi‐ tion Based Service
CBS 204
Service requirements, dis‐ play 82
Service, Roadside Assis‐ tance 218
Services, ConnectedDrive Seite 240ReferenceEverything from A to Z240
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