Page 113 of 270

2.21
If the vehicle is equipped with the func-
tion, this system monitors the tyre pres-
sure.
Operating principleEach wheel (except for the emergency
spare wheel) has a sensor in the infla-
tion valve which periodically measures
the tyre pressure. The system informs
the driver via the on-board compu-
ter 1 that the tyres are sufficiently in-
flated and warns if they are underinfla-
ted or leaking. The warning light
comes on to warn the driver if the pres-
sure is too low. It should always be done after checking
the tyre pressure of all four tyres when
cold.
Tyre pressures must correspond to the
current usage of the vehicle (empty,
carrying a load, motorway driving, etc.).
With the ignition on:
– make short presses on the con-
trol 2 to select the tyre pressure
display (please refer to “On-board
Computer” in Section 1);
– press and hold (around three sec- onds) the control 2 to launch initial-
isation. Flashing tyres followed by
the message “Pressure ref ongoing”
means that the request to learn the
reference pressures has been taken
into account;
– reset can take several minutes of dri- ving.
This function is an addi-
tional driving aid.
However, the function does
not take the place of the
driver. It cannot, therefore, under
any circumstances replace the vi-
gilance or the responsibility of the
driver.
Check the tyre pressures, including
the emergency spare wheel, once a
month.
TYRE PRESSURE MONITORING SYSTEM (1/4)
Resetting the standard level
for the tyre pressures
This should be done:
– when the standard tyre pressure needs to be changed to adapt to
usage conditions (empty, carrying a
load, motorway driving, etc.);
– after swapping wheels over (how- ever this practice is not recom-
mended);
– after changing a wheel.
1
2
Page 115 of 270

2.23
Readjustment of tyre
pressures
The tyre pressures must be adjusted
when cold (please refer to the label lo-
cated on the edge of the driver’s door).
If the tyre pressures cannot be checked
when they are cold, the recommended
pressures should be increased by 0.2
to 0.3 bar (3 PSI).
Never deflate a hot tyre.
Tyre repair product and
inflation kit
Because the valves are specially desi-
gned, only use equipment approved by
the approved network.
TYRE PRESSURE MONITORING SYSTEM (3/4)
Interchangeability of wheels
If you want to swap the wheels round,
consult an authorised dealer to reinitia-
lise the system.
Each of the sensors incor-
porated in the valves 5 is
dedicated to a single wheel:
under no circumstances
should you swap the wheels, with-
out resetting the system.
There is a risk of incorrect informa-
tion which could have serious con-
sequences.
5
5
6
Replacing wheels/tyres
This system requires specific equip-
ment (wheels, tyres, hubcaps, etc.).
Contact an approved Dealer to fit new
tyres and to find out about available ac-
cessories compatible with the system
and available from your dealer net-
work: the use of any other accessory
could affect the correct operation of the
system or damage a sensor.
Emergency spare wheel
If the vehicle is equipped with an emer-
gency spare wheel, it will not have a
sensor. When it is fitted to the vehicle,
the message “Check tyre pressure sen-
sors” is displayed on the instrument
panel.
Changing a wheel
The system may take several minutes depending on use for the new
wheel positions and pressures to be recognised; check the tyre pres-
sures after all operations.
Page 116 of 270
2.24
BC
DE
To mark the correct position of the
wheel, note the colour of the ring 6
(after cleaning, if necessary) on each
valve:
B yellow ring
C black ring
D red ring
E green ring
5
5
6
Each of the sensors incor-
porated in the valves 5 is
dedicated to a single wheel:
under no circumstances
should you swap the wheels, with-
out resetting the system.
There is a risk of incorrect informa-
tion which could have serious con-
sequences.
TYRE PRESSURE MONITORING SYSTEM (4/4)