58
Under-inflation detection
System which continuously and automatically
checks the pressures of the four tyres after
switching on the ignition.
A pressure sensor is located in the valve of
each tyre.
The system triggers an alert if a drop in
pressure is detected in one or more tyres,
compared to the reference pressure registered
in the system. This reference pressure must be
reinitialised every time the tyre pressures are
adjusted or a wheel changed.
The system operates on condition that sensor
identifiers have first been memorised in the
system by a CITROËN dealer or a qualified
workshop.
You can memorise two sets of tyres
(for example: wheels with "standard" tyres and
wheels with "winter" tyres).The tyre under-inflation detection
system is an aid to driving which does
not replace the need for vigilance on
the part of the driver. This system does not avoid the need to
check the tyre pressures regularly and
before a long journey.
Driving with under-inflated tyres
adversely affects road holding,
extends braking distances and causes
premature tyre wear, particularly under
arduous conditions (vehicle loaded,
high speed, long journey).
Driving with under-inflated tyres
increases fuel consumption. The tyre pressures for your vehicle can
be found on the tyre pressure label (see
the "Identification markings" section).
The tyre pressures must be checked
when the tyres cold (vehicle stopped
for 1 hour or after driving for less then
6 miles (10 km) at moderate speed).
Other wise, add 0.3 bar to the values
indicated on the label.
Safety
61
Managing sets of wheels
and tyres
Selection of the other set of wheels and tyres
is is done via the instrument panel screen, with
the ignition on and the vehicle stationary.
After fitting the new set of wheels and
tyres, you should check and adjust the
tyre pressures to the values specified
on the tyre pressure label (see the
"Identification markings" section). The system automatically reinitialises
the reference pressure based on the
pressure in the new set (the under-
inflation detection warning lamp flashes
during the operation).
If you have had a second set of wheels and
tyres registered by a CITROËN dealer or a
qualified workshop, every time you change the
set of wheels (fitting a set of winter tyres, for
example), you must select the set you have just
fitted in the configuration menu.
F
P
ress button A to select the function.
F
P
ress and hold button A button for more
than 10 seconds to change successively
from set of wheels and tyres 1 to set of
wheels and tyres 2 or the other way round.
6
Safety
