For example, when driving with a heavy load or at high speed above 160 km/h (100 mph), the tyre pressure should be adjusted in accordance with Volvo's recommended tyre pressure values. Following which, the system must be recalibrated.
Switch off the car.
Inflate the tyres to the desired pressure in accordance with the tyre pressure label on the door pillar on the driver's side.
Start the car.
Open the Car status app in the app view.
The car must be stationary when calibration is started.
Tap on OK to confirm that the tyre pressure in all four tyres has been checked and adjusted.
Run the car until calibration is complete.
Calibration is performed when the car is driven at a speed above 35 km/h(22 mph).
When sufficient data has been collected to enable the system to detect low tyre pressure, the tyres in the centre display change colour from grey to green. The system provides no additional confirmation that the calibration is complete.
If the car's ignition is switched off before calibration is complete, the tyres in the centre display change colour from grey to green upon next start-up, even if calibration is not complete. Perform calibration again and allow it to complete within the same operating cycle to ensure that the calibration is carried out correctly.
If start-up of calibration fails, the following message appears: Calibration unsuccessful. Try again..
Remember to always calibrate the tyre pressure monitoring system when you have changed a wheel or if the tyre pressure has been changed according to the tyre pressure label or tyre pressure table.
If correct reference values have not been set, the system may not warn correctly about low tyre pressure.
The car must be stationary with the engine running for you to have access to the calibration button and start the calibration process.
The exhaust gases contain carbon monoxide, which is invisible and odourless, but highly toxic. For this reason, calibration must always be performed outside or in a workshop with exhaust extraction.