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Tyre pressure
212
If a substantial loss of pressure occurs or high
temperature, a warning is issued:
by display messages (
R
by a warning lamp h in the instrument
R
cluster (
page 254)
Y
It is the driver's responsibility to set the tyre
pressure to the recommended cold tyre pres-
sure suitable for the operating situation. Adjust
the tyre pressure when the tyres are cold using
a tyre pressure gauge.
The tyre pressure monitor will not automatically
detect the reference values after you have
changed the tyre pressure. Update the refer-
ence values manually by restarting the tyre pres-
sure monitor (
Y
System limitations
The tyre pressure monitor will not issue a warn-
ing:
if the tyre pressure is set incorrectly
R
if there is a sudden loss of pressure, e.g. if the
R
tyre is penetrated by a foreign object
if there is interference caused by another
R
source of radio waves
Be sure to observe the following further related
subjects:
Notes on tyre pressure (
R
Checking the tyre pressure using the
tyre pressure monitor
Requirements:
the ignition is switched on.
R
On-board computer:
+
Service
Service
X
One of the following displays appears:
the current tyre pressure for each wheel
R
Tyre pressures will be displayed
Tyre pressures will be displayed
R
after a few minutes of driving
after a few minutes of driving
Tyre pressure monitor
Tyre pressure monitor active
R
teach-in procedure of the system is not yet
complete. The tyre pressures are already
being monitored.
Compare the tyre pressure with the recom-
X
mended tyre pressure for the current operat-
ing conditions (
notes on tyre temperature (
page 241)
Y
page 212).
page 210)
Y
*
Tyre pressure
Tyre pressure
active: the
page 211). Observe the
Y
page 210).
Y
i
The values displayed in the multifunction
display may differ from those of the tyre pres-
sure gauge, as they refer to sea level. At high
altitudes, the tyre pressure values indicated
by a tyre pressure checker are higher than
those shown by the multifunction display. In
this case, do not reduce the tyre pressures.
Be sure to observe the following further related
subjects:
Notes on tyre pressure (
R
Restarting the tyre pressure monitor
Requirements:
the recommended tyre pressure on all four
R
wheels is correct for the current operating
conditions (
page 210).
Y
Restart the tyre pressure monitor in the follow-
ing situations:
the tyre pressure has changed.
R
wheels or tyres have been changed or newly
R
fitted.
On-board computer:
+Service
Service
*
X
Press button :.
X
The
Use current
Use
current pressures
pressures as as new
erence values
erence values
message is shown on the
multifunction display.
Press the a button to confirm restart.
X
The current warning messages are deleted
and the h yellow warning lamp goes out.
After you have driven for a few minutes, the
system checks whether the current tyre pres-
sure levels are within the specified range. The
new tyre pressures are then accepted as ref-
erence values and monitored.
Be sure to observe the following further related
subjects:
Notes on tyre pressure (
R
page 210)
Y
Tyre pressure
Tyre pressure
new ref‐
ref‐
page 210)
Y
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