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454 Wheels and tyres
454
The tyre pressure table shows the recommended
tyre pressure for all tyres approved for this vehi-
cle. The recommended tyre pressures apply for
cold tyres under various operating conditions, i.e.
loading and/or speed of the vehicle.
If one or more tyre sizes precede a tyre pressure,
the following tyre pressure information is only
valid for those tyre sizes and their respective load
condition.
If the preceding tyre sizes are complemented by
the + symbol, the tyre pressure information
following shows alternative tyre pressures. Fuel
consumption may then increase slightly.
The load conditions "partially laden" and "fully
laden" are de ned in the table for di erent num-
bers of passengers and amounts of luggage. The
actual number of seats may di er from this.
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 driver's display.
If there is a substantial pressure loss or if the tyre
temperature is excessive, you will be warned with
display messages (
warning lamp in the driver's display
(
page 579).
/
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 (
System limits
Syst
em limits
The system may be impaired or may not function
particularly in the following situations:
ing system
em
incorrect reference values were taught in
R
sudden pressure loss caused by a foreign
R
object penetrating the tyre, for example
page 552) or the h
/
page 455).
/
there is a malfunction caused by another radio
R
signal source
Chec
Checking t
king the tyr
he tyre pr
e pressur
essure wit
e with t h the tyr
monitor oring syst
monit
ing system
em
R R eq equir uirements:
ements:
The vehicle is switched on.
R
Driver's display:
©
Service
4
5
Press a to con rm.
#
One of the following displays appears:
Current tyre pressure of each wheel:
R
he tyre pr
e pressure
essure
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