Intervention by braking or make an evasive ma‐
neuver.
Pedestrian warning Symbol in the instrument cluster.
If a collision with a person detected in this way
is imminent, the symbol lights up and a signal
sounds.
Yellow lights
Antilock Brake System ABS It reduces the braking distance to a
minimum during emergency stops.
Illuminated: avoid abrupt braking if pos‐
sible. Braking force boost in some
cases defective. 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 122.
DSC Dynamic Stability Control deactivated DSC Dynamic Stability Control is
switched off.
For additional information, refer to Dy‐
namic Stability Control DSC, refer to
page 122.M Dynamic Mode MDM
M Dynamic Mode MDM is switched on.
For more information, see M Dynamic
Mode, refer to page 123.
Additional flashing: MDM controls the
drive and brake forces. The vehicle is
stabilized.
Illuminated: MDM failed. Have the sys‐
tem checked by the service center.
For more information, see M Dynamic
Mode, refer to page 123.
FTM Flat Tire Monitor 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 106.
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.▷RDC 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.Seite 80ControlsDisplays80
Online Edition for Part no. 01 40 2 956 414 - X/14
▷Inflation was not carried out according to
specifications.▷The tire inflation pressure has fallen below
the level of the last confirmation.
In this case:
▷Check the tire pressure and correct as
needed.▷Carry out a reset of the system after a tire
change.
System limits
The system does not function properly if a re‐
set has not been carried out, e.g., a flat tire is
reported though tire inflation pressures are
correct.
The tire inflation pressure depends on the
tire's temperature. Driving or exposure to the
sun will increase the tire's temperature, thus
increasing the tire inflation pressure. The tire
inflation pressure is reduced when the tire
temperature falls again. These circumstances
may cause a warning when temperatures fall
very sharply.
Malfunction The yellow warning lamp flashes and
then lights up continuously. A Check
Control message is displayed. No flat
tire or loss of tire inflation pressure can be de‐
tected.
Display in the following situations:
▷A wheel without TPM electronics is fitted:
have the service center check it if needed.▷Malfunction: have the system checked by
your service center.▷TPM was unable to complete the reset.
Reset the system again.▷Interference through systems or devices
with the same radio frequency: after leav‐
ing the area of the interference, the system
automatically 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 vehicleSeite 105SafetyControls105
Online Edition for Part no. 01 40 2 956 414 - X/14
Wheels and tiresVehicle features and options
This 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.
Tire inflation pressure
Safety information
The tire characteristics and tire inflation pres‐
sure influence the following:▷The service life of the tires.▷Road safety.▷Driving comfort.
Checking the tire inflation pressure
Check the tire inflation pressure regularly
Regularly check the tire inflation pres‐
sure, and correct it as needed: at least twice a
month and before a long trip. If you fail to ob‐
serve this precaution, you may be driving on
tires with incorrect tire pressures, a condition
that may not only compromise your vehicle's
driving stability, but also lead to tire damage
and the risk of an accident.◀
Tires have a natural, consistent loss of tire in‐
flation pressure.
Tires heat up while driving, and the tire infla‐
tion pressure increases along with the tire's
temperature. The tire inflation pressure speci‐
fications relate to cold tires or tires with the
ambient temperature.
Only check the tire inflation pressure when the
tires are cold. This means after driving no more
than 1.25 miles/2 km or when the vehicle has
been parked for at least 2 hours.
The displays of inflation devices may under-
read by up to 1.45 psi/0.1 bar.
For Flat Tire Monitor: after correcting the tire
inflation pressure, reinitialize the Flat Tire
Monitor.
For Tire Pressure Monitor: after correcting the
tire inflation pressure, reset the Tire Pressure
Monitor.
Tire inflation pressure specifications
The tire inflation pressure table, refer to
page 171, contains all tire inflation pressure
specifications for the specified tire sizes at the
ambient temperature. Tire inflation pressure
specifications apply to approved tire sizes and
recommended tire brands. This information
can be obtained from your service center.
To identify the correct tire inflation pressure,
please note the following:▷Tire sizes of your vehicle.▷Maximum permitted driving speed.
Tire inflation pressures up to
100 mph/160 km/h
For speeds of up to 100 mph/160 km/h and for
optimum driving comfort, note the pressure
values in the tire inflation pressure table, refer
to page 171, and adjust as necessary.
Seite 170MobilityWheels and tires170
Online Edition for Part no. 01 40 2 956 414 - X/14
Pedestrian detection, seeNight Vision 113
Pedestrian warning with city braking function 110
Personal Profile 35
Personal Profile, exporting profiles 36
Pinch protection system, glass sunroof 47
Pinch protection system, win‐ dows 45
Plastic, care 201
Power failure 191
Power sunroof, glass 46
Power windows 45
Pressure, tire air pres‐ sure 170
Pressure warning FTM, tires 106
Preventing Auto Start Stop 66
Profile, refer to Personal Pro‐ file 35
Programmable memory but‐ tons, iDrive 23
Protective function, glass sunroof 47
Protective function, win‐ dows 45
Push-and-turn reel, refer to Controller 18
R Radiator fluid 184
Radio-operated key, refer to Remote control 34
Radio ready state 64
Radio, see user's manual for Navigation, Entertainment
and Communication
Rain sensor 70
Rear lights 189
Rearview camera 131
Rearview mirror 55
Rear window defroster 140 Recirculated-air mode 139
Recommended fuel grade 168
Recommended tire brands 174
Refueling 166
Remaining range 84
Remote control/key 34
Remote control, malfunc‐ tion 38
Remote control, univer‐ sal 142
Replacement fuse 191
Replacing bulbs, see Lamp replacement 187
Replacing parts 187
Replacing wheels/tires 174
Reporting safety defects 9
RES button, see Cruise con‐ trol 127
Reserve warning, refer to Range 84
Reset, Tire Pressure Monitor TPM 104
Residual heat, automatic cli‐ mate control 140
Retaining straps, securing cargo 161
Retreaded tires 174
Reversing lamp, bulb replace‐ ment 190
Roadside parking lights 96
Roller sunblinds 46
RON recommended fuel grade 168
Rope for tow-starting/ towing 197
Rubber components, care 201
S Safe braking 158
Safety 7 Safety belt reminder for driv‐
er's seat and front passen‐
ger seat 52
Safety belts 51
Safety belts, care 202
Safety Package, refer to Ac‐ tive Protection 119
Safety systems, airbags 100
Saving fuel 162
Screen, refer to Control Dis‐ play 18
Screwdriver, see Onboard ve‐ hicle tool kit 187
Screw thread, see screw thread for tow fitting, screw
thread for tow fitting 198
Sealant 175
Seat belts, refer to Safety belts 51
Seat heating, front 50
Seating position for chil‐ dren 59
Seat, mirror, and steering wheel memory 54
Seats 48
Seat ventilation, front 50
Selection list in instrument cluster 88
Selector lever 72
Selector lever position 72
Sensors, care 202
Sequential mode 73
Service and warranty 8
Service requirements, Condi‐ tion Based Service
CBS 185
Service requirements, dis‐ play 86
Service, Roadside Assis‐ tance 194
Services, ConnectedDrive
Servotronic 125
SET button, see Cruise con‐ trol 127
Settings, locking/unlock‐ ing 42 Seite 214ReferenceEverything from A to Z214
Online Edition for Part no. 01 40 2 956 414 - X/14