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Emergency spare wheel
Important safety notes
G
WARNING
The wheel or tire size as well as the tire type of the spare wheel or emergency spare wheel
and the wheel to be replaced may differ.
Mounting an emergency spare wheel may
severely impair the driving characteristics.
There is a risk of an accident.
To avoid hazardous situations:
R adapt your driving style accordingly and
drive carefully.
R never mount more than one spare wheel or
emergency spare wheel that differs in size.
R only use a spare wheel or emergency spare
wheel of a different size briefly.
R do not switch ESP ®
off.
R have a spare wheel or emergency spare
wheel of a different size replaced at the
nearest qualified specialist workshop.
Observe that the wheel and tire dimensions
as well as the tire type must be correct.
When using an emergency spare wheel or
spare wheel of a different size, you must not
exceed the maximum speed of 50 mph
(80 km/h).
Snow chains must not be mounted on emer-
gency spare wheels. General notes
You should regularly check the pressure of
the emergency spare wheel, particularly prior
to long trips, and correct the pressure as nec-
essary (Y page 314). The applicable value is
found on the wheel or under "Technical data"
(Y page 344).
An emergency spare wheel may also be
mounted against the direction of rotation.
Observe the time restriction on use as well as
the speed limitation specified on the emer-
gency spare wheel. Replace the tires after six years at the latest,
regardless of wear. This also applies to the
emergency spare wheel.
i When you are driving with the collapsible
spare wheel mounted, the tire pressure
loss warning system or the tire pressure
monitor cannot function reliably. Only
restart the tire pressure loss warning sys-
tem/the tire pressure monitor when the
damaged wheel has been replaced with a
new wheel.
Vehicles with tire pressure monitor:
after mounting an emergency spare wheel,
the system may still display the tire pres-
sure of the removed wheel for a few
minutes. The value displayed for the moun- ted emergency spare wheel is not the sameas the current tire pressure of the emer-
gency spare wheel. Removing the emergency spare wheel
(Example)
The collapsible spare wheel can be found in
the stowage well under the trunk floor. X Lift and remove the reversible floor panel in
the trunk (Y page 258).
X Turn retaining screw 0044counter-clockwise
and remove it.
X Remove collapsible spare wheel 0043.
Always observe the instructions and safety
notes in the "Mounting a wheel" section
(Y page 333). Emergency spare wheel
341Wheels and tires Z
Page 344 of 358
Stowing the emergency spare wheel
! Only place the collapsible spare wheel in
the vehicle when it is dry. Otherwise, mois-
ture may get into the vehicle.
Take the following steps to stow a used col-
lapsible spare wheel. Otherwise, the collaps-
ible spare wheel will not fit in the trunk in the
intended manner. Mercedes-Benz recom-
mends that you have this work carried out at
a qualified specialist workshop.
X Unscrew the valve cap from the valve.
X If possible, 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 Pull the protective sheet provided with the
spare wheel over the collapsible spare
wheel.
X Stow the collapsible spare wheel in the
emergency spare wheel well under the
trunk.
X Use the retaining screw to pierce the pro-
tective sheet and fasten the collapsible
spare wheel in place. Inflating the collapsible spare wheel
! Inflate the collapsible spare wheel using
the tire inflation compressor before lower-
ing the vehicle. The wheel rim could other-
wise be damaged.
! Do not operate the tire inflation compres-
sor for longer than ten minutes at a time
without a break. It may otherwise overheat.
The tire inflation compressor can be oper-
ated again once it has cooled down. X
Mount the collapsible spare wheel as
described (Y page 333).
The collapsible spare wheel must be moun-
ted before it is inflated.
X Pull plug 0085out of the housing.
X Take the air hose out of the housing.
X Insert the yellow hose connector of the air
hose into the guide in the housing and push it into the fixture until the hose connector
engages.
X Remove the cap from the valve on the col-
lapsible spare wheel.
X Screw union nut 0043on the air hose onto the
valve.
X Make sure the tire inflation compressor's
on/off switch 0083is set to OFF.
X Insert plug 0085into the socket of the ciga-
rette lighter or into a 12 V power socket in your vehicle.
Observe the notes on the cigarette lighter
(Y page 260). Observe the notes on sock-
ets (Y page 261).
X Turn the SmartKey to position 1in the igni-
tion lock (Y page 139).
X Press on/off switch 0083on the tire inflation
compressor to ON.
The tire inflation compressor is switched
on. The tire is inflated. The tire pressure is
shown on pressure gauge 0087.
X Inflate the tire to the specified tire pres-
sure.
The specified tire pressure is printed on the
yellow label of the emergency spare wheel. 342
Emergency spare wheelWheels and tires
Page 345 of 358
X
When the specified tire pressure has been
reached, press on/off switch 0083toOFF, on
the tire inflation compressor.
The tire inflation compressor is switched
off.
X Turn the SmartKey to position 0in the igni-
tion lock.
X If the tire pressure is higher than the speci-
fied pressure, press pressure release but-
ton 0044until the correct tire pressure has
been reached.
X Unscrew union nut 0043on the air hose from
the valve.
X Screw the cap onto the valve of the col-
lapsible spare wheel again. Removing an air hose
X
To remove the hose from the tire inflation
compressor, push down the rocker switch
on the hose connector and pull out the
hose.
X Stow plug 0085and the air hose in the lower
section of the blower housing.
X Stow the tire inflation compressor in the
vehicle. Emergency spare wheel
343Wheels and tires Z
