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Tyre pressure loss warning
Tyre pressure loss warning
When fitted to the vehicle, this system notifies the driver if one or more tyres lose
pressure.
The system can be identified by the 1 label in the vehicle.
Operating principle
This system detects a loss of pressure in one of the tyres by measuring the wheel
speed while driving.
Warning light 
2 comes on steady to alert the driver in the event of insufficient pressure (deflated
wheel, punctured tyre, etc.).
2 comes on steady to alert the driver in the event of insufficient pressure (deflated
wheel, punctured tyre, etc.).
WARNING
This function is an additional driving aid.
The function does not take the place of the driver. It cannot, therefore, under any
circumstances replace the vigilance or the responsibility of the driver. Check the
tyre pressures, including the emergency spare wheel, once a month.
Operating conditions
The system should be reset with a pressure equal to that stated on the tyre pressure
label (refer to the information on "TYRE PRESSURE" in section 4), otherwise it may not give a reliable warning in the event of significant
pressure loss.
Resetting should always be carried out after checking the tyre pressure of all four
tyres when cold.
In the following situations, the system risk coming into action late or not functioning
correctly:
- system not reset after reinflation or any operation on the wheels;
- incorrectly reset system: tyre pressures different from the recommended pressures;
- significant change in load or distribution of load on one side of the vehicle;
- sporty driving with strong acceleration;
- driving on snowy or slippery surface;
- driving with snow chains;
- fitting a single new tyre;
- use of tyres not approved by the network.
Tip
Tyre pressure must be checked before starting the resetting procedure.
The system will not issue a warning if the pressure does not correspond to the recommended
pressure.
Tip
The sudden loss of pressure in a tyre (burst tyre, etc.) cannot be immediately detected
by the system.
Procedure for resetting the standard levels for the tyre pressures
This should be performed:
- after each re-inflation or resetting of tyre pressure;
- after changing a wheel;
- after changing wheels around.
Tyre pressures must correspond to the current usage of the vehicle (empty, carrying
a load, motorway driving, etc.). Respect the tyre pressures (including the emergency
spare wheel). Check them at least once a month and before a long journey (refer to
the label on the edge of the driver’s door)TYRES.
Resetting procedure
On the instrument panel
Ignition on, vehicle stationary: repeatedly tap the 4 switch as many times as necessary to reach the "vehicle" tab 
- tilt the switch 3 up or down to reach page "Tyre pressure init. long press";
- press and hold the 5OK switch to launch the reset.
Hold down the 5 switch until the "Operation completed" message appears. You can now drive.
Tip
If the vehicle is equipped with a navigation system, the reset procedure is initialised
using the multimedia screen: refer to the equipment instructions.
Message display
The table below shows the possible messages related to the tyre resetting procedure.
Steps | Messages | Readings |
- | Tyre pressure init. at stop | The message is displayed during driving. If you want to reset the pressure of the
four tyres, stop the vehicle.
|
1 | Tyre pressure init. long press | To reset the pressure of the four tyres, with the vehicle stopped, press and hold
the 5OK switch to launch resetting until the "If pressure OK [hold on]" message is displayed.
|
2 | If pressure OK [hold on] | The message flashes, reminding you that the pressure must be adjusted to the values
recommended on the tyre TYRE PRESSURE inflation pressure label before resetting the system. Press and hold switch 5OK to confirm the reset request until the message "Operation completed" appears.
|
3 | Operation completed | The resetting procedure has been completed successfully. You can now drive. |
Readjustment of tyre pressures
The pressure of the four tyres must be set when cold (refer to the label located on the edge of the driver's door) TYRE PRESSURE.
If tyre pressures cannot be checked when the tyres are cold, the recommended pressures should be increased by 0.2 to 0.3 bar (3 PSI).
Never deflate a hot tyre.
After each reinflation or readjustment of the tyre pressure, launch the resetting
of the tyre pressure reference value.
Replacing wheels/tyres
Only use equipment approved by the brand network, otherwise the system risks late
activation or incorrect operationTYRES.
After each change of wheel/tyre, readjust the tyre pressure and launch the reset of
the tyre pressure reference value.
Emergency spare wheel
If fitted on the vehicle, readjust the tyre pressure and launch the resetting of the
tyre pressure reference value.
Tyre repair product and inflation kit
Only use equipment approved by the brand network, otherwise the system risks late
activation or incorrect operation. TYRE INFLATION KIT. After using the tyre inflation kit, readjust the tyre pressure and launch the resetting
of the tyre pressure reference value.
Tyre pressure faults
The table on the following page lists the warning messages which appear on the instrument
panel 6 when the system detects a tyre pressure fault.
The information on the instrument panel signals any potential tyre pressure faults
(e.g. deflated or punctured tyre).
Fault message table
Indicator lights | Messages | Readings |
comes on | Inflate tyres and init. | This indicates that tyre under-inflation or puncture has been detected. Check and
adjust the pressure of the four tyres when cold and reset the system.
|
flashes, then stays on | Check tyre press and init. | This indicates that the reset has been unsuccessful. Check and readjust the tyre pressure
before re-launching the resetting procedure.
|
flashes, then stays on, along with the warning light  | Check TPW | This indicates a fault in the system. Consult an approved dealer. |
flashes, then stays on | TPW not available | This indicates that an emergency spare wheel different in size to the other four wheels
has been fitted to the vehicle. The system remains unavailable until a wheel identical
in size to the other wheels has been fitted and the resetting procedure has been carried
out.
|