162
Tyre under-inflation
d
etection
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 (including the
spare wheel) every month as well as
before a long journey.
Driving with under-inflated tyres worsens
road-holding, lengthens braking distances,
causes premature wear of the tyres,
particularly in adverse conditions (heavy
loads, high speeds, long journeys).
Driving with under-inflated tyres
increases fuel consumption.
The inflation pressures defined for your
vehicle can be found on the tyre pressure
label.
Tyre pressure should be checked when
the tyres are "cold" (vehicle stopped for
1 hour or after a journey of less than
6 miles (10 km) at moderate speeds).
Other wise, add 0.3 bar to the values
indicated on the label.
For more information on Identification
markings , including the tyre pressure
label, refer to the corresponding section.
Under-inflation alert
System which automatically checks the
pressures of the tyres while driving.
The system continuously monitors the
pressures of the four tyres, as soon as the
vehicle is moving.
A pressure sensor is located in the valve of
each tyre (except the spare wheel).
The system triggers an alert as soon as it
detects a drop in the inflation pressure of one
or more tyres. This warning is indicated by
continuous illumination of the lamp,
an audible signal and, depending on
the equipment installed, a message
displayed on the screen.
In the event of a problem on one of the tyres,
the symbol or the message appears, according
to equipment, to identify it.
F
R
educe speed immediately, avoid excessive
steering movements and sudden braking.
F
S
top as soon as it is safe to do so.
The loss of pressure detected does not
always cause visible bulging of the tyre.
Do not rely on just a visual check.
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Driving
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F If you have a compressor (such as the one in the temporary puncture repair kit) check
the pressures of the four tyres when cold.
If it is not possible to carry out this check
straight away, drive carefully at reduced
speed.
or
F
I
n the event of a puncture, use the
temporary puncture repair kit or the spare
wheel (depending on equipment).
The alert is maintained until the tyre or
tyres concerned is reinflated, repaired or
replaced.
The spare wheel (space-saver type or a
steel rim) does not have a sensor.
Operating fault
The flashing and then fixed
illumination of the under-inflation
warning lamp accompanied by the
illumination of the Ser vice warning
lamp indicates a fault with the
system.
In this case, the pressure in the tyres is no
longer monitored. This alert is also displayed when one or
more wheels is not fitted with a sensor
(for example, a space-saver or steel spare
wheel).
Go to a member of the dealer network
or a qualified workshop
to have the
system checked or, following the repair
of a puncture, to have the original wheel,
equipped with a sensor, refitted.
Any tyre repair or replacement on a wheel
fitted with this system must be carried
out by the dealer network or a qualified
workshop.
If after changing a tyre, a wheel is not
detected by your vehicle (fitting snow tyres
for example), you must have the system
reinitialised in the dealer network or by a
qualified workshop.
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Driving
