Mercedes-Benz E-Class 2011 Owner's Manual page 372

are higher than those shown by the on-
board computer. In this case, do not reduce
the tyre pressures.
i
The operation of the tyre pressure moni-
tor can be affected by interference from
radio transmitting equipment (e.g. radio
headphones, two-way radios) that may be
being operated in or near the vehicle.
Checking tyre pressure electronically
Make sure that the key is in posi-
X
tion 2( page 155) in the ignition lock.
Y
Press the = or ; button on the steer-
X
ing wheel to select the Serv.menu.
Press the 9 or : button to select
X
Tyre pressure.
Press the a button.
X
The current tyre pressure for each wheel
will be displayed in the multifunction dis-
play.
If the vehicle has been parked for longer than
20minutes, the Tyre pressures will be
displayed after a few minutes of
driving message appears.
After a teach-in period, the tyre pressure
monitor automatically recognises new
wheels or new sensors. As long as a clear
allocation of the tyre pressure values to the
individual wheels is not possible, the
pressure monitor active
sage is shown instead of the tyre pressure
display. The tyre pressures are already being
monitored.
i
If a spare wheel/emergency spare wheel
is fitted, the system may continue to show
the tyre pressure of the wheel that has
been removed for a few minutes. If this
occurs, note that the value displayed for
the position where the spare wheel/emer-
gency spare wheel is fitted is not the same
as the spare wheel/emergency spare
wheel's current tyre pressure.
Warning messages of the tyre pressure
monitor
If the tyre pressure monitor detects a signifi-
cant pressure loss on one or more tyres, a
warning message is shown in the multifunc-
tion display. A warning tone also sounds and
the tyre pressure warning lamp lights up in
the instrument cluster.
Each tyre that is affected by a significant loss
of pressure is highlighted in the pressure dis-
play.
If the
message appears in the multifunction dis-
play:
Check the tyre pressure on all four wheels
X
and correct it if necessary.
i
interchanged, the tyre pressures may be
displayed for the wrong positions for a
short time. This is rectified after a few
minutes of driving, and the tyre pressures
are displayed for the correct positions.
Restarting the tyre pressure monitor
When you restart the tyre pressure monitor,
all existing warning messages are deleted and
the warning lamps go out. The monitor uses
the currently set tyre pressures as the refer-
ence values for monitoring. In most cases, the
Tyre
tyre pressure monitor will automatically
display mes-
detect the new reference values after you
have changed the tyre pressure.
i
(
If you wish to define the new reference values
manually:
Use the table on the inside of the fuel filler
X
flap to ensure that the tyre pressure is set
correctly in all four tyres for the current
operating conditions.
Please correct tyre pressure
If the wheel positions on the vehicle are
For an overview of the menus, see
page 234).
Y
Tyre pressure
Z
369