more of the tyres has dropped suddenly. The
tyres must be checked.
Always observe the instructions and safety
notes related to the display messages, which
can be found in the "Tyres" section.
R
for vehicles without steering wheel buttons
(Y page 257)
R
for vehicles with steering wheel buttons
(Y page 276)
Vehicles with steering wheel buttons: if the
wheel positions on the vehicle are interchanged,
the tyre pressures may be displayed for the
wrong positions for a short time. This is rectified
after a few minutes of driving; the tyre pressures
are then displayed for the correct positions.
Restarting the tyre pressure monitor
General notes
When you restart the tyre pressure monitor, all
existing warning messages are deleted and the
warning lamps go out. The monitor uses the cur-
rently set tyre pressures as the reference values
for monitoring. In most cases, the tyre pressure
monitor will automatically detect the new refer-
ence values after you have changed the tyre
pressure. However, you can also define refer-
ence values manually as described here. The
tyre pressure monitor then monitors the new
tyre pressure values.
Vehicles without steering wheel buttons
The vehicle must be stationary. Use the buttons
in the instrument cluster.
X
Turn the key to position 2 in the ignition lock.
X
Press È to select the Tyre pressure menu.
X
Press 3 to confirm.
The display shows the Tyre.pr.mon.active
message.
X
Press 3 to confirm.
The display shows the Tyre pressure OK?
message.
If you wish to confirm the restart:
X
Press the f button.
The display shows the distance menu.
After you have driven for a few minutes, the
system checks whether the current tyre pres-
sures are within the specified range. The new
tyre pressures are then accepted as refer-
ence values and are monitored.
If you wish to cancel the restart:
X
Press g.
The display shows the tyre pressure menu.
The tyre pressure values stored at the last
restart will continue to be monitored.
Vehicles with steering wheel buttons
Use the steering wheel buttons.
X
Make sure that the tyre pressure of all four
wheels is set correctly for the current oper-
ating conditions. When doing so, observe the
notes under "Tyre pressure" (Y page 359).
X
Turn the key to position 2 in the ignition lock.
X
Press = or ; to select the Service
menu.
X
Press 9 or : to select the Tyre pres‐
sure submenu.
X
Press a to confirm.
The display shows the current tyre pressure of
each wheel or the Tyre pressures will
be displayed after a few minutes of
driving message.
X
Press the : button.
The display shows the Use current pres‐
sures as new reference values: mes-
sage.
If you wish to confirm the restart:
X
Press the a button.
The display shows the Tyre pressure mon‐
itor restarted message.
After you have driven for a few minutes, the
system checks whether the current tyre pres-
sures are within the specified range. The new
tyre pressures are then accepted as refer-
ence values and are 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.
Tyre pressure
363
Wheels and tyres
Z
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