Preparing The Vehicle - Mercedes-Benz S-Class Operator's Manual

Changing a wheel
466
Rotate the wheels before a clear wear pattern
has formed on the tires. Front tires typically
wear more on the shoulders and the rear tires
in the center.
If your vehicle's tire configuration allows, you
can rotate the wheels according to the inter-
vals in the tire manufacturer's warranty book
in your vehicle documents. If no warranty
book is available, the tires should be rotated
every 3,000 to 6,000 miles (5,000 to
10,000 km), or earlier if tire wear requires.
Ensure the direction of rotation is maintained.
Clean the contact surfaces of the wheel and
the brake disc thoroughly every time a wheel
is rotated. Check the tire pressure and, if nec-
essary, restart the tire pressure loss warning
system ( page 452) or the tire pressure
Y
monitor ( page 451).
Y
Direction of rotation
Tires with a specified direction of rotation
have additional benefits, e.g. if there is a risk
of hydroplaning. These advantages can only
be gained if the tires are installed correspond-
ing to the direction of rotation.
An arrow on the sidewall of the tire indicates
its correct direction of rotation.
Storing wheels
Store wheels that are not being used in a cool,
dry and preferably dark place. Protect the
tires from oil, grease, gasoline and diesel.
Mounting a wheel

Preparing the vehicle

Stop the vehicle on solid, non-slippery and
X
level ground.
Apply the electric parking brake manually.
X
Bring the front wheels into the straight-
X
ahead position.
Shift the transmission to position P.
X
Make sure that "normal" level is selected
X
for AIRMATIC ( page 246).
Y
Switch off the engine.
X
Open the driver's door.
X
The on-board electronics now have status
0. This is the same as the SmartKey having
been removed.
Remove Start/Stop button from ignition
X
lock ( page 189).
Y
or, if the SmartKey is inserted in the ignition
lock:
Remove the SmartKey from the ignition
X
lock.
If included in the vehicle equipment,
X
remove the tire-change tool kit from the
vehicle.
Secure the vehicle to prevent it from rolling
X
away.
Securing the vehicle to prevent it from
rolling away
If your vehicle is equipped with a wheel chock,
it can be found in the tire-change tool kit
( page 422).
Y
The folding wheel chock is an additional
safety measure to prevent the vehicle from
rolling away, for example when changing a
wheel.
Fold both plates upwards :.
X
Fold out lower plate ;.
X
Guide the lugs on the lower plate fully into
X
the openings in base plate =.