8
Safety109
C3Picasso_post-it_en_Chap08_securite_ed01-2015
U n d e r - i n fl a t i o n d e t e c t i o n
System which automatically checks the pressures of the tyres while driving.
The system monitors the pressures in the four tyres, once the vehicle is moving. It compares the information given by the four wheel speed sensors with reference values, which must be reinitialised ever y time the tyre pressures are adjusted or a wheel changed . The system triggers an alert as soon as it detects a drop in the inflation pressure of one or more tyres.
The under-inflation detection system 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 impairs road holding, extends braking distances and causes premature tyre wear, particularly under arduous conditions (high loading, high speed, long journey).
The inflation pressures defined for your vehicle can be found on the tyre pressure label. For more information on the identification markings, refer to the corresponding section. Tyre pressures 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 (when hot), add 0.3 bar to the pressures shown on the label.
Driving with under-inflated tyres increases fuel consumption.
Under-inflation alert
This is given by fixed illumination of this warning lamp, accompanied by an audible signal and, depending on equipment, the display of a message.
Reduce speed immediately, avoid excessive steering movements and sudden braking. Stop the vehicle 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 satisfy yourself with just a visual check.
The alert is maintained until the system is reinitialised.
In the event of a puncture, use the temporary puncture repair kit or the spare wheel (depending on equipment), or if you have a compressor, such as the one in the temporary puncture repair kit, check the pressures of the four tyres when cold, or if it is not possible to make this check immediately, drive carefully at reduced speed.
Safety
110
C3Picasso_post-it_en_Chap08_securite_ed01-2015
Reinitialisation
It is necessary to reinitialise the system every time one or more tyre pressures are adjusted, and after changing one or more wheels.
Before reinitialising the system, ensure that the pressures of the four tyres are correct for the use of the vehicle and in line with the recommendations on the tyre pressure label. The under-inflation alert can only be relied on if the reinitialisation of the system has been done with the pressures in the four tyres correctly adjusted. The under-inflation detection system does not give a warning if a pressure is incorrect at the time of reinitialisation.
The system is reinitialised with the ignition on and the vehicle stationary, via the vehicle configuration menu.
Press the MENU button for access to the main menu. Press the " " or " " button to select the Veh conf ig menu, then confirm by pressing the OK button. Press the " " or " " button to select " Reinit inflat ", then confirm by pressing the OK button. Select " yes " or " no " then press OK . A message is displayed asking you to confirm the instruction. Confirm by pressing the OK button. Conform then quit the menu.
Press the MENU button for access to the main. Press the " " or " " button to select the menu, " Personalisation-configuration " then confirm by pressing the button OK . Press the " " or " " button to select the " Define vehicle parameters ", menu, then confirm by pressing the OK button. Press the " " or " " button to select the " Tyre pressures" , menu then the " Reinitialisation " menu, then confirm by pressing the OK button. A message confirms the reinitialisation.
The new pressure settings registered are considered to be reference values by the system.
Vehicles without audio or navigation system Vehicles with audio system
8
Safety111
C3Picasso_post-it_en_Chap08_securite_ed01-2015
Snow chains The system does not have to be reinitialised after fitting or removing snow chains.
Operating fault
The flashing and then fixed illumination of the under-inflation warning lamp accompanied by illumination of the Service warning lamp indicates a fault with the system. A message appears, accompanied by an audible signal.
In this case, under-inflation monitoring of the tyres is no longer assured. Have the system checked by a CITROËN dealer or a qualified workshop.
Before doing anything to the system, the pressures of the four tyres must be checked and the system reinitialised.
