teristics, e.g.winter tires. ATIREFIT kit maybe
obtained fromaqualified specialistworkshop.
Informationonchanging and mounting wheels
(Y page 289).
X
Stop the vehicleonsolid,non-slippery and
level ground,asfar away as possiblefrom
traffic.
X
Switch on the hazardwarning lamps.
X
Secure the vehicleagainst rolling away
(Y page 134).
X
If possible, bring the front wheels into the
straight-ahead position.
X
Switch off the engine.
X
Vehicleswithout KEYLESS-GO: remove
the SmartKeyfromthe ignition lock.
X
VehicleswithKEYLESS-GO: open the driv-
er'sdoor.
The vehicleelectronics arenow in position
g.Thisisthe same as the SmartKeyhaving
been removed.
X
VehicleswithKEYLESS-GO: remove the
Start/Stop button fromthe ignition lock
(Y page 118).
X
Make sure thatthe passengers arenot
endangeredastheydoso. Make sure that
no one is nearthe dangerareawhile a
wheelisbeing changed. Anyone whoisnot
directlyassisting in the wheelchange
should, for example, stand behind the bar-
rier.
X
Getout of the vehicle. Payattentiontotraf-
fic conditions when doing so.
X
Close the driver's door.
MOExtendedtires(tires with run-flat
properties)
General notes
With MOExtendedtires(tires with runflat
characteristics),you can continue to drive your
vehicleevenifthere is atotallossofpressure
in one or moretires. The affectedtire must not
showany clearly visible damage.
Youcan recognize an MOExtendedtire by the
MOExtendedmarking which appearsonthe
sidewall of the tire.You will findthismarking
next to the tire size designation, the load-bear-
ing capacity and the speedindex
(Y page 284).
MOExtendedtiresmay onlybeusedincon-
junctionwithanactive tire pressure loss warn-
ing systemorwithanactive tire pressure mon-
itor.
If apressure loss warning message
appears in the multifunction display:
R
observe the instructions in the displaymes-
sages(Ypage 202)
R
check the tire for damage
R
if drivingon, observe the following notes
The drivingdistance possibleinrun-flat mode
is approximately 50 miles(80 kilometers)
when the vehicleispartiallyladen and approx-
imately 19 miles(30 kilometers)whenthe
vehicleisfully laden.
In additiontothe vehicleload, the drivingdis-
tance possibledepends upon:
R
Vehiclespeed
R
Road condition
R
Outside temperature
The drivingdistance possibleinrun-flat mode
maybereducedbyextreme drivingconditions
or maneuvers, or it can be increasedthrougha
moderate style of driving.
The drivingdistance possibleinrun-flat mode
is counted fromthe moment the tire pressure
loss warning appearsinthe multifunctiondis-
play.
Youmustnot exceed amaximum design
speedof50mph (80 km/h).
When replacing one or alltires, please observe
the following specifications for your vehicle's
tires:
R
Size
R
Type and
R
The"MOExtended" marking
If atire hasgoneflatand cannot be replaced
with an MOExtendedtire,astandard tire may
be used as atemporary measure. Make sure
thatyou usethe propersizeand type(summer
or winter tire).
Vehicles equipped with MOExtendedtiresare
not equipped with aTIREFIT kit at the factory.
It is therefore recommended thatyou addition-
ally equipyourvehiclewithaTIREFIT kit if you
mount tiresthatdonot featurerun-flat charac-
teristics, e.g.winter tires. ATIREFIT kit can be
obtained fromaqualified specialistworkshop,
for example.
254
Flat tire
Breakdownassistance
