Advertisement
392 Wheels and tyres
392
T T yr yre pr
e pressur
essure monit
e monitor oring syst
ing system
em
F F unction of t
unction of the tyr
he tyre pr
e pressur
essure monit
e monitor oring syst
The system checks the tyre pressure and the tyre
temperature of the tyres tted to the vehicle by
means of a tyre pressure sensor.
The tyre pressure and the tyre temperature
appear in the on-board computer (
If there is a substantial pressure loss or if the tyre
temperature is excessive, you will be warned with
display messages (
page 465) or the h
/
warning lamp in the instrument cluster
(
page 486).
/
The tyre pressure monitoring system is only an
aid. It is the driver's responsibility to set the tyre
pressure to the recommended cold tyre pressure
suitable for the operating situation.
In most cases, the tyre pressure monitoring sys-
tem will automatically update the new reference
values a er you have changed the tyre pressure.
You can, however, also update the reference val-
ues by restarting the tyre pressure monitoring
system manually (
page 393).
/
System limits
Syst
em limits
The system may be impaired or may not function
ing system
em
particularly in the following situations:
incorrect reference values were taught in
R
sudden pressure loss caused by a foreign
R
object penetrating the tyre, for example
page 392).
/
there is a malfunction caused by another radio
R
signal source
Chec
Checking t
king the tyr
he tyre pr
monit
monitor oring syst
ing system
R R eq equir uirements:
ements:
The vehicle is switched on.
R
On-board computer:
Service
4
One of the following displays appears:
Current tyre pressure and tyre temperature of
R
the individual wheels:
e pressur
essure wit
e with t h the tyr
he tyre pr
e pressure
essure
em
Tyres
5
Tyre pressures will be displayed after a few
R
minutes of driving
Tyre pressure monitor
active: the teach-in
R
process of the system is not yet complete. The
tyre pressures are already being monitored.
The teach-in process takes longer if you have
engaged the di erential locks. Check the tyre
pressure again later.
Compare the tyre pressure with the recom-
#
mended tyre pressure for the current operat-
ing condition (
page 391). Additionally,
/
observe the notes on cold tyres
(
page 390).
/
Advertisement
