
▷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 104ControlsSafety104
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Retreaded tires
Possibly substantial variations in the de‐
sign and age of the tire casing structures can
limit service life and have a negative impact on
road safety.◀
Winter tires
Winter tires are recommended for operating on
winter roads.
Although so-called all-season M+S tires pro‐
vide better winter traction than summer tires, they do not provide the same level of perform‐
ance as winter tires.
Maximum speed of winter tires If the maximum speed of the vehicle is higher
than the permissible speed for the winter tires,
then a respective symbol is displayed in your
field of vision. You can obtain this sign from the
tire specialist or from your service center.
Maximum speed for winter tires
Do not exceed the maximum speed for
the respective winter tires; otherwise, tire dam‐
age and accidents can occur.◀
Run-flat tires If you are already using run-flat tires, for your
own safety you should replace them only with
the same kind. No spare tire is available in the
case of a flat tire. Your service center will be
glad to advise you.
Rotating wheels between axlesDifferent wear patterns can occur on the frontand rear axles depending on individual driving
conditions. The tires can be rotated between
the axles to achieve even wear. Your service
center will be glad to advise you. After rotating,
check the tire pressure and correct if needed.
Rotating the tires is not permissible on vehi‐
cles with different tire sizes or rim sizes on the
front and rear axles.Storage
Store wheels and tires in a cool, dry place with
as little exposure to light as possible.
Always protect tires against all contact with oil,
grease and fuels.
Do not exceed the maximum tire inflation pres‐
sure indicated on the side wall of the tire.
Run-flat tires Label
RSC label on the tire sidewall.
The wheels consist of tires that are self-sup‐
porting, to a limited degree, and possibly spe‐
cial rims.
The support of the sidewall allows the tire to
remain drivable to a restricted degree in the
event of a tire inflation pressure loss.
Follow the instructions for continued driving
with a flat tire.
Changing run-flat tires
For your own safety, only use run-flat tires. No
spare tire is available in the case of a flat tire.
Your service center will be glad to advise you.
Mobility System
The concept With the Mobility System, minor tire damagecan be sealed quickly to enable continued
travel. To accomplish this, sealant is pumped
Seite 199Wheels and tiresMobility199
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Changing wheels
Hints
When using run-flat tires or sealants, a tire
does not need to be changed immediately in
the event of pressure loss due to a flat tire.
Which is why no spare tire is available.
The tools for changing wheels are available as
accessories from your service center.
Jacking points for the vehicle jack
The jacking points for the vehicle jack are lo‐
cated at the positions shown.
Vehicle battery Maintenance
The battery is maintenance-free.
The added amount of acid is sufficient for the
service life of the battery.
Further information about the battery can be
obtained from your service center.
Battery replacement Use approved vehicle batteries only
Only use vehicle batteries that have been
approved for your vehicle by the manufacturer;
otherwise, the vehicle could be damaged and
systems or functions may not be fully availa‐
ble.◀
After a battery replacement, have the battery
registered on the vehicle by the service center
to ensure that all comfort features are fully
available and that any Check Control mes‐
sages of these comfort features are no longer
displayed.
Charging the battery
General information
Make sure that the battery is always suffi‐
ciently charged to guarantee that the battery
remains usable for its full service life.
The battery may need to be charged in the fol‐
lowing cases:▷When making frequent short-distance
drives.▷If the vehicle is not used for prolonged pe‐
riods, longer than a month.
Hints
Do not connect charging devices to the
12 volt socket in the vehicle
Do not connect battery chargers to the fac‐
tory-installed 12 volt sockets in the vehicle as
this may damage the vehicle battery due to an
increased power consumption.◀
Starting aid terminals
In the vehicle, only charge the battery via the
starting aid terminals, refer to page  226, in the
engine compartment with the engine off.
Power failure
After a temporary power loss, some equipment
needs to be newly initialized or individual set‐
tings updated, e. g.:
▷Seat and mirror memory: store the posi‐
tions again.▷Time: update.▷Date: update.▷Glass sunroof: initialize the system, refer to
page  50.Seite 221Replacing componentsMobility221
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Safety belt reminder for driv‐er's seat and front passen‐
ger seat  55 
Safety belts  54 
Safety belts, care  233 
Safety switch, windows  48 
Safety systems, airbags  98 
Saving fuel  176 
Screen, refer to Control Dis‐ play  18 
Screwdriver, see Onboard ve‐ hicle tool kit  212 
Screw thread, see screw thread for tow fitting, screw
thread for tow fitting  229 
Sealant  199 
Seat and mirror memory  57 
Seat belts, refer to Safety belts  54 
Seat heating, front  54 
Seat heating, rear  54 
Seating position for chil‐ dren  61 
Seats  51 
Selection list in instrument cluster  87 
Selector lever, Steptronic transmission  74 
Sensors, care  233 
Service and warranty  8 
Service requirements, Condi‐ tion Based Service
CBS  210 
Service requirements, dis‐ play  84 
Services, ConnectedDrive 
Servotronic  124 
SET button, see Active Cruise Control, ACC  125 
SET button, see Cruise con‐ trol  131  
Settings, locking/unlock‐ ing  45 
Settings on Control Dis‐ play  90 Settings, storing for seat, mir‐
ror  57 
Shift paddles on the steering wheel  76 
Side airbags  98 
Side View  138 
Signaling, horn  14 
Signals when unlocking  45 
Sitting safely  51 
Size  236 
Slide/tilt glass roof  48 
Smallest turning radius  236 
Snow chains  203 
Socket  157 
Socket, OBD Onboard Diag‐ nostics  211 
Soot particulate filter  171 
SOS button  224 
Spare fuse  222 
Specified engine oil types  208 
Speed, average  88 
Speed limit detection, on- board computer  89 
Speed limiter, display  86 
Speed Limit Information  86 
Speed warning  89 
Split screen  23 
SPORT+ - program, Dynamic Driving Control  123 
Sport displays, torque dis‐ play, performance dis‐
play  89 
SPORT program, Dynamic Driving Control  123 
Sport program, transmis‐ sion  75 
Sport steering, variable  122 
Stability control systems  120 
Start/stop, automatic func‐ tion  67 
Start/Stop button  65 
Start function during malfunc‐ tion  35 
Starting the engine  66 Status control display,
tires  102 
Status information, iDrive  23 
Status of Owner's Manual  7 
Steering assistance  124 
Steering wheel, adjusting  60 
Steering wheel heating  60 
Steptronic Sport transmis‐ sion, refer to Steptronic
transmission  73 
Steptronic transmission  73 
Stopping the engine  67 
Storage compartment in the rear  165 
Storage compartments  163 
Storage compartments, loca‐ tions  163 
Storage, tires  199 
Storing the vehicle  233 
Suitable engine oils  208 
Summer tires, tread  197 
Sun visor  157 
Supplementary text mes‐ sage  82 
Surround View  136 
Switch for Dynamic Driv‐ ing  122  
Switch-on times, parked-car ventilation  152 
Switch, refer to Cockpit  14 
Symbols  6 
Symbols in the status field  23 
T Tachometer  82 
Tailgate, automatic  40 
Tailgate, closing with no- touch activation  43 
Tailgate, opening with no- touch activation  43 
Tailgate via remote con‐ trol  38 
Tail lights  218 
Technical changes, refer to Safety  7 Seite 247Everything from A to ZReference247
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