X
Secure the vehicle against rolling away
(
Y page 170).
X
If possible, bring the front wheels into the
straight-ahead position.
X
Switch off the engine.
X
Open the driver's door.
The on-board electronics now have status
0. This is the same as the SmartKey having
been removed.
X
Remove the Start/Stop button from the
ignition lock (
Y page 151).
or, if the SmartKey is inserted in the ignition
lock:
X
Remove the SmartKey from the ignition
lock.
X
Make sure that the engine cannot be star-
ted via your smartphone (
Y page 154).
X
Make sure that the passengers are not
endangered as they do so. Make sure that
no one is near the danger area while a
wheel is being changed. Anyone who is not
directly assisting in the wheel change
should, for example, stand behind the bar-
rier.
X
Get out of the vehicle. Pay attention to traf-
fic conditions when doing so.
X
Close the driver's door.
MOExtended tires (tires with run-flat
properties)
General notes
With MOExtended tires (tires with run flat
characteristics), you can continue to drive
your vehicle even if there is a total loss of
pressure in one or more tires. The affected
tire must not show any clearly visible damage.
You can recognize MOExtended tires by the
MOExtended marking which appears on the
sidewall of the tire. You will find this marking
next to the tire size designation, the load-
bearing capacity and the speed index
(
Y page 377).
MOExtended tires may only be used in con-
junction with an active tire pressure monitor.
If a pressure loss warning message
appears in the multifunction display:
R
observe the instructions in the display mes-
sages (
Y page 279).
R
check the tire for damage.
R
if driving on, observe the following notes.
The driving distance possible in run-flat mode
is approximately 50 miles (80 km) when the
vehicle is partially laden and approximately
18 miles (30 km) when the vehicle is fully
laden.
In addition to the vehicle load, the driving dis-
tance possible depends upon:
R
vehicle speed
R
road condition
R
outside temperature
The driving distance possible in run-flat mode
may be reduced by extreme driving condi-
tions/maneuver, or it can be increased
through a moderate style of driving.
The driving distance possible in run-flat
mode
i
s counted from the moment the tire pressure
loss warning appears in the multifunction dis-
play.
You must not exceed a maximum speed of
50 mph (80 km/h).
i When replacing one or all tires, please
observe the following specifications for
your vehicle's tires:
R
size
R
the type and
R
the "MOExtended" mark
If a tire has gone flat and cannot be
replaced with a MOExtended tire, a stand-
ard tire may be used as a temporary meas-
ure. Make sure that you use the proper size
and type (summer or winter tire).
i
Vehicles equipped with MOExtended tires
are not equipped with a TIREFIT kit at the
factory. It is therefore recommended that
you additionally equip your vehicle with a
Flat tire
343
Breakdown assistance
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