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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 detection system does not give a warning if a pressure is incorrect at the time of reinitialisation.
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.
Under-inflation alert
This is given by fixed illumination of this warning lamp, accompanied by an audible signal and 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.
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 In the event of a puncture, use the temporary puncture repair kit or the spare wheel (depending on equipment),
Reinitialisation
It is necessary to reinitialise the system every time one or more tyre pressure is adjusted, and after changing one or more wheels. A label attached to the middle pillar, driver's side, gives a reminder of this.
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Operating fault
The under-inflation alert is only dependable if the system has been reinitialised with all four tyres inflated to the correct pressures.
Snow chains
The system does not have to be reinitialised after fitting or removing snow chains.
Before doing anything to the system, the pressures of the four tyres must be checked and the system reinitialised.
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. 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.
