Mercedes-Benz GLC Owner's Manual page 465

Tyre pressure
462
monitor active monitor active
of the tyre pressure display. The tyre pres-
sures are already being monitored.
If an emergency spare wheel is fitted, for a
few minutes the system may continue to
show the tyre pressure of the wheel that has
been removed. If this occurs, note that the
value displayed for the position where the
spare wheel is fitted is not the same as the
current tyre pressure of the emergency spare
wheel.
Warning messages of the tyre pressure
monitor
If the tyre pressure monitor detects a pres-
sure loss in one or more tyres, a warning mes-
sage is shown in the multifunction display.
The yellow tyre pressure warning lamp then
lights up.
If the Please correct tyre pressure Please correct tyre pressure
R
message appears in the multifunction dis-
play, the tyre pressure in at least one tyre is
too low. The tyre pressure must be correc-
ted when the opportunity arises.
If the Check tyre(s) Check tyre(s)
R
the multifunction display, the tyre pressure
in at least one tyre has dropped signifi-
cantly. The tyres must be checked.
If the Warning tyre defect Warning tyre defect
R
appears in the multifunction display, the
tyre pressure in at least one tyre has drop-
ped suddenly. The tyres must be checked.
Observe the instructions and safety notes in
the display messages in the "Tyres" section
( page 367).
Y
If the wheel positions on the vehicle are inter-
changed, the tyre pressures may be displayed
for the wrong positions for a short time. After
a few minutes of driving, this is rectified and
the tyre pressures are displayed for the cor-
rect positions.
Restarting the tyre pressure monitor
When you restart the tyre pressure monitor,
all existing warning messages are deleted and
message is shown instead
message appears in
message
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 pressure monitor will automatically
detect the new reference values after you
have changed the tyre pressure. However,
you can also set reference values manually as
described here. The tyre pressure monitor
then monitors the new tyre pressure values.
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.
Also observe the notes in the section on
tyre pressures ( page 458).
Y
Make sure that the key is in position 2 in the
X
ignition lock ( page 187).
Y
Press the ò button on the steering
X
wheel to call up the list of menus.
Press 9 or : on the steering wheel
X
to select the Service Service
Press the a button.
X
Press 9 or : to select
X
sure. sure
Press the a button.
X
The current tyre pressure for each wheel or
the Tyre pressures will be dis‐ Tyre pressures will be dis‐
played after played after a a few few minutes
ing ing message will be displayed in the mul-
tifunction display.
Press the : button.
X
The Use current pressures as new Use current pressures as new
reference values reference values
the multifunction display.
If you wish to confirm the restart:
Press the a button.
X
The Tyre press. monitor restarted 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.
menu.
Tyre pres‐ Tyre pres‐
minutes of of driv‐ driv‐
message appears in