Citroen C5 Aircross Quiz
Underinflation

Underinflation function

In this manual: Underinflation
AAS - Parking Aid — 8Owner's Manual Citroën C5 II — 139Citroen C5 Aircross (2017- 2024) - Owner's Manual — 143Audio system — 14Overspeed control — 7Multifunction display — 4Driver information instrument cluster — 20Navigation assistance — 8Intruder alarm — 7Mechanical specifications — 9Power supply — 8Electrical equipment — 13Lighting and electrical equipment — 3Immobiliser — 4Sunroof — 10Exterior lighting / signalling — 38Multiplexing — 7Air conditioning — 7Body — 6General specifications — 9Automatic gearbox control — 3Exterior mirrors — 10Airbags — 5Defrost — 6Underinflation — 6Interior lighting — 4Wipers / Washers — 6Window lifters — 11Cooling — 8Opening management — 7Cruise control — 5Suspension — 4Grip management — 1Paint — 2Exterior lighting control — 1Indicators (turn signals) — 1Automatic lighting systems - General recommendations — 1Wiper control — 1Special position of the front wipers — 1
~1min read

Performance

The underinflation function provides information on the tyre status (puncture or underinflation) by measuring tyre pressure using a transmitter module (one per wheel to be monitored).

The RF receiver, located in the steering wheel switch module, retransmits the information sent to the BSI, which determines the tyre position and pressure status.

Functional description

STEP

DETAILS
1 The transmitter module measures the pressure inside the tyre and sends it as an RF signal to the RF receiver located in the steering wheel switch module.
2 The steering wheel switch module receives the tyre pressure values and transmits them to the BSI via the VAN CAR 1 network.
3 The BSI determines the tyre position and pressure status. If the measured pressure is below the permitted thresholds, the BSI activates the warning lamps on the instrument cluster and the buzzer integrated into the steering wheel switch module, and informs the driver of the tyre pressure status on the multifunction display.

Note: The spare tyre is not fitted with a transmitter module.

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