Mercedes-Benz SL SERIES Operator's Manual page 553

Vehicles equipped with MOExtended tires are
not equipped with a TIREFIT kit at the factory.
It is therefore recommended that you addi-
tionally equip your vehicle with a TIREFIT kit if
you mount tires that do not feature run-flat
properties, e.g. winter tires. A TIREFIT kit may
be obtained from a qualified specialist work-
shop.
Information on changing/mounting a wheel
( page 588).
Y
Stop the vehicle on solid, non-slippery and
X
level ground, as far away as possible from
traffic.
Switch on the hazard warning lamps.
X
Secure the vehicle against rolling away
X
( page 171).
Y
If possible, bring the front wheels into the
X
straight-ahead position.
Switch off the engine.
X
Vehicles without KEYLESS-GO: remove
X
the SmartKey from the ignition lock.
Vehicles with KEYLESS-GO: open the
X
driver's door.
The on-board electronics now have status
0. This is the same as the SmartKey having
been removed.
Vehicles with KEYLESS-GO: remove the
X
Start/Stop button from the ignition lock
( page 152).
Y
Make sure that the passengers are not
X
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.
Get out of the vehicle. Pay attention to traf-
X
fic conditions when doing so.
Close the driver's door.
X
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
( page 582).
Y
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:
observe the instructions in the display mes-
R
sages ( page 264).
Y
check the tire for damage.
R
if driving on, observe the following notes.
R
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:
vehicle speed
R
road condition
R
outside temperature
R
The driving distance possible in run-flat mode
may be reduced by extreme driving condi-
tions or maneuvers, or it can be increased
through a moderate style of driving.
The driving distance possible in run-flat mode
is 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).
Flat tire
551