detect the new reference values after you
have changed the tyre pressure.
i
For an overview of the menus, see
(
Y
page 238).
If you wish to define the new reference values
manually:
X
Use the table on the inside of the fuel filler
flap to ensure that the tyre pressure is set
correctly in all four tyres for the current
operating conditions.
Also observe the notes in the section on
tyre pressures (
Y
page 359).
X
Make sure that the key is in position 2 in
the ignition lock.
X
Press the
=
or
;
button on the steer-
ing wheel to select the
Service
menu.
X
Press the
9
or
:
button to select
Tyre pressure
.
X
Press the
a
button.
The multifunction display shows the cur-
rent tyre pressure of the individual tyres or
the
Tyre pressures will be dis‐
played after a few minutes of driv‐
ing
message.
X
Press the
:
button.
The
Use current pressures as new
reference values
message appears in
the multifunction display.
If you wish to confirm the restart:
X
Press the
a
button.
The
Tyre press. monitor restarted
message appears in the multifunction dis-
play.
After you have driven for a few minutes, the
system checks whether the current tyre
pressures are within the specified range.
The new tyre pressures are then accepted
as reference values and monitored.
If you wish to cancel the restart:
X
Press the
%
button.
The tyre pressure values stored at the last
restart will continue to be monitored.
Radio type approval for the tyre pres-
sure monitor
In certain countries, a radio type approval for
the tyre pressure monitor may be required.
The radio type approval number for the tyre
pressure monitor can be found online at:
http://www.mercedes-benz.de/
betriebsanleitung.
Changing a wheel
Flat tyre
The "Breakdown assistance" section
(
Y
page 334) contains information and notes
on how to deal with a flat tyre. It also provides
instructions on changing a wheel or fitting the
spare wheel or emergency spare wheel.
Interchanging the wheels
G
WARNING
Interchange the front and rear wheels only if
they have the same dimensions: for example
size, offset, etc.
After every wheel interchange/change, have
the tightening torque checked at a qualified
specialist workshop that has the necessary
specialist knowledge and tools to carry out
the work required. Mercedes-Benz recom-
mends that you use a Mercedes-Benz Service
Centre for this purpose. In particular, work
relevant to safety or on safety-related sys-
tems must be carried out at a qualified spe-
cialist workshop.
The wheels could work loose if they are not
tightened to a torque of 150 Nm.
For safety reasons, Mercedes-Benz recom-
mends that you only use wheel bolts of the
correct size which have been approved for
Mercedes-Benz vehicles.
The wear patterns on the front and rear tyres
differ, depending on the operating conditions.
Interchange the wheels before a clear wear
pattern has formed on the tyres. Front tyres
Changing a wheel
363
Whee
ls
and
tyre
s
Z
