DS 3 Manuals

DS 3: Driving / Tyre under-inflation detection

DS 3 2016-2022 Owners Manual

This system alerts the driver when one or more tyres have a drop in pressure.

The alert is raised when the vehicle is moving, not when stationary.

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.

It takes the last values stored during the reinitialisation request into account. It is therefore essential that the tyre pressure is correct during the operation. This operation is the driver’s responsibility.

DS 3. Tyre under-inflation detection The tyre under-inflation detection cannot, in any circumstances, replace the need for vigilance on the part of the driver.

This system does not avoid the need to regularly check the tyre pressures (including the spare wheel), especially before a long journey.

Driving with under-inflated tyres, particularly in adverse conditions (heavy load, high speed, long journey):

  • worsens road-holding.
  • lengthens braking distances.
  • causes premature wear of the tyres.
  • increases energy consumption.

DS 3. Tyre under-inflation detection The inflation pressures defined for the vehicle can be found on the tyre pressure label.

For more information on the Identification markings, refer to the corresponding section.

DS 3. Tyre under-inflation detection Checking tyre pressures

This check should be done monthly when the tyres are "cold" (vehicle stopped for 1 hour or after a journey of less than 6 miles (10 km) at moderate speeds).

Otherwise, add 0.3 bar to the pressures shown on the label.

Under-inflation alert

DS 3. Tyre under-inflation detection 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.

DS 3. Tyre under-inflation detection The loss of pressure detected may not always cause visible deformation 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 all four tyres when cold.
  • If it is not possible to carry out 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).

DS 3. Tyre under-inflation detection Driving too slowly may not ensure optimum monitoring.

The alert is not immediately triggered in the event of a sudden loss of pressure or tyre blowout. This is because analysis of the values read by the wheel's speed sensors can take several minutes.

The alert may be delayed at speeds below 25 mph (40 km/h), or when adopting a sporty driving mode.

DS 3. Tyre under-inflation detection The alert is kept active until the system is reinitialised.


The system must be reinitialised after any adjustment to the pressure of one or more tyres, and after changing one or more wheels.

DS 3. Tyre under-inflation detection 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.

Check the pressures of the four tyres before performing the reinitialisation.

The system does not advise if a pressure is incorrect at the time of reinitialisation.

DS 3. Tyre under-inflation detection With the vehicle stationary, the system is reinitialised via the Driving/Vehicle touch screen menu.

DS 3. Tyre under-inflation detection Snow chains

The system does not have to be reinitialised after fitting or removing snow chains.


DS 3. Tyre under-inflation detection In the event of a malfunction, these warning lamps light up on the instrument panel.

A message appears, accompanied by an audible signal.

In this case, the tyre under-inflation monitoring function is no longer performed.

Have it checked by a dealer or a qualified workshop.

DS 3. Tyre under-inflation detection "Space-saver" type spare wheel

The use of this type of spare wheel may suspend tyre pressure monitoring.

In this case, the fault warning lamp comes on and goes off again once the wheel has been replaced with one of the same size as the others, tyre pressures have been adjusted and the system reinitialised.

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