Cleaning the wheels
G
WARNING
The water jet from a circular jet nozzle (dirt
blasters) can cause invisible exterior
damage
to the tires or chassis components.
Components damaged in this way may fail
unexpectedly. There is a risk of an accident.
Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged
tires or chassis components replaced
immediately. Mounting a wheel
Preparing the vehicle
X Stop the vehicle on solid, non-slippery and
level ground.
X Apply the parking brake.
X Bring the front wheels into the straight-
ahead position.
X Secure the vehicle against rolling away
(Y page 160).
X Switch off the engine.
X Vehicles without KEYLESS-GO: remove
the SmartKey from the ignition lock.
X Vehicles with KEYLESS-GO: open the
driver's door.
The on-board electronics have status 0,
which is the same as the SmartKey having
been removed.
X Vehicles with KEYLESS-GO: remove the
Start/Stop button from the ignition lock
(Y page 141).
X If included in the vehicle equipment,
remove the tire-change tool kit from the
vehicle.
X Secure the vehicle to prevent it from rolling
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
(Y page 312).
The folding wheel chock is an additional
safety measure to prevent the vehicle from
rolling away, for example when changing a
wheel.
X
Fold both plates upwards 0043.
X Fold out lower plate 0044.
X Guide the lugs on the lower plate fully into
the openings in base plate 0087. Securing the vehicle on level ground
X
On level ground: place chocks or other
suitable items under the front and rear of
the wheel that is diagonally opposite the
wheel you wish to change. Mounting a wheel
353
Wheels and tires Z
X
Pull connector 0085 and the air hose out of
the housing.
X Remove the cap from the valve on the
collapsible spare wheel.
X Screw union nut 0043 on the air hose onto the
valve.
X Make sure on/off switch 0083 of the tire
inflation compressor is set to 0.
X Insert plug 0085 into the socket of the
cigarette lighter (Y
page 280) or into a 12 V
power socket (Y page 280) in your vehicle.
X Make sure that the SmartKey is in position
1(Y page 141) in the ignition lock.
X Press on/off switch 0083 on the tire inflation
compressor to I
.
The tire inflation compressor is switched
on. The tire is inflated. The tire pressure is
shown on pressure gauge 0087.
! Do not operate the tire inflation
compressor for longer than eight minutes
at a time without
a
break. It may otherwise
overheat.
The tire inflation compressor can be
operated again once it has cooled down.
X Inflate the tire to the specified tire
pressure.
The specified tire pressure is
printed on the
yellow label of the emergency spare wheel.
X When the specified tire pressure has been
reached, press on/off switch 0083 on the
electric air pump to 0.
The tire inflation compressor is switched
off. X
Turn the SmartKey to position 0 in the
ignition lock.
X If the tire pressure is higher than the
specified pressure, press pressure release
button 0044 until the correct tire
pressure has
been reached.
X Unscrew union nut 0043 on the air hose
from
the valve.
X Screw the cap onto the valve of the
collapsible spare wheel again.
X Stow plug 0085 and the air hose in the lower
section of the blower housing.
X Stow the tire inflation compressor in the
vehicle.
Stowing a used collapsible spare wheel Take the following steps to stow a used
collapsible spare wheel. Otherwise, the
collapsible spare wheel will
not
fit in the spare
wheel well. Mercedes-Benz recommends that
you have this work carried out at a qualified
specialist workshop.
! Only place the collapsible spare wheel in
the vehicle when it is dry. Otherwise,
moisture may get into the vehicle.
X Remove the valve extractor from the
vehicle tool kit.
X Unscrew the valve cap from the valve.
X Unscrew the valve insert from the valve and
release the air.
i Fully deflating the tires can take a few
minutes.
X Screw the valve insert back into the valve.
X Screw the valve cap back on.
X Place the valve extractor back into the
vehicle tool kit.
X Stow the collapsible spare wheel in the
emergency spare wheel well under the
cargo compartment and fasten in place. Emergency spare wheel
361
Wheels and tires Z
