Citroen C3: Under-inflation detection / Under-inflation alert

Citroen C3 2016-2025 Owners Manual / Driving / Under-inflation detection / Under-inflation alert

Citroen C3. Under-inflation alert This is signalled by the 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 avoid sudden braking.
Stop the vehicle as soon as it is safe to do so.

Citroen C3. Under-inflation alert The loss of pressure detected does not always cause visible bulging of the tyre. Do not rely on just a visual check.

Using 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 make this check immediately, drive carefully at reduced speed.
In the event of a puncture, use the temporary puncture repair kit or the spare wheel (depending on equipment).

The alert is kept active until the system is reinitialised.

Under-inflation detection

This system automatically checks the pressures of the tyres while driving. It compares the information given by the wheel speed sensors with reference values, which must be reinitialised every time the tyre pressures are adjusted or a wheel changed...

Reinitialisation. Malfunction

Reinitialisation The system must be reinitialised after any adjustment to the pressure of one or more tyres, and after changing one or more wheels. Before reinitialising the system, make sure that the pressures of the four tyres are correct for the conditions of use of the vehicle and conform to the values written on the tyre pressure label...

Other information:

Citroen C3 2016-2025 Owners Manual: Reinitialising the remote control

Following replacement of the battery or in the event of a fault, it may be necessary to reinitialise the remote control. Without Keyless Entry and Starting Switch off the ignition. Return the key to position 2 (Ignition on). Immediately press the closed padlock button for a few seconds...

Citroen C3 2016-2025 Owners Manual: Misfuel prevention (Diesel)