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In most cases, the tire pressure monitor will auto-
matically update the new reference values after
you have changed the tire pressure. You can,
however, also update the reference values by
restarting the tire pressure monitor manually
(
page 381).
/
System limits
The system may be impaired or may not function
particularly in the following situations:
incorrect reference values were taught in
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sudden pressure loss caused by a foreign
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object penetrating the tire, for example
there is a malfunction caused by another radio
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signal source
▌Checking the tire pressure with the tire pres-
sure monitoring system
Requirements
The vehicle is switched on.
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Driver's display:
©
Service
4
5
Press a to confirm.
#
One of the following displays appears:
Current tire pressure of each wheel:
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Tire pressure displayed after driving for a
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few
minutes.: current values are not yet
known to the system. The pressure/tempera-
ture values for each tire will be displayed as
soon as they are known to the system.
Tire Pressure Monitor
Active: the teach-in
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process of the system is not yet complete. The
tire pressures are already being monitored.
Compare the current tire pressure with the
#
recommended tire pressure for the current
operating condition (
page 378). Addition-
/
Wheels and tires 381
ally, observe the notes on cold tires
(
page 377).
/
%
The values displayed in the driver's display
may deviate from those of the tire pressure
gauge as they refer to sea level. At high eleva-
tions, the tire pressure values indicated by a
tire pressure gauge are higher than those
shown in the driver's display.
Bear in mind the following related topic:
Notes on tire pressure (
page 377)
/
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▌Restarting the tire pressure monitoring system
Requirements
The recommended tire pressure is correctly
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set for the respective operating status on each
of the four wheels (
page 377).
/
Restart the tire pressure monitoring system in the
following situations:
The tire pressure has changed.
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The wheels or tires have been changed or
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newly installed.
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