Tyre pressure monitoring*
Tyre pressure monitoring (TPMS) (Tyre Pressure Monitoring System)1 warns the driver when the pressure is too low in one or more of the car's tyres.
Tyre pressure monitoring uses sensors located inside the air valve in each wheel. When the car is driven at about 40 km/h the system detects the tyre pressure. If the pressure is too low then a warning lamp 
in the combined instrument panel illuminates and a message is shown in the information display.
Both factory-fitted and optional wheels can be fitted with TPMS sensors in the valves.
If wheels without TPMS sensors are used or if a sensor has failed then Tyre press. syst Service required will be shown.
Always check the system after changing a wheel in order to ensure that replacement wheels work with the system.
For information on the correct tyre pressure, see Tyres - air pressure.
The system does not replace normal tyre maintenance.
Important
If a fault should arise in the tyre pressure system a warning lamp in the combined instrument panel will illuminate and a message will be shown. This can be for various reasons, e.g. fitting a wheel not equipped with a sensor adapted for Volvo's tyre pressure monitoring system.
in the combined instrument panel will illuminate and a message will be shown. This can be for various reasons, e.g. fitting a wheel not equipped with a sensor adapted for Volvo's tyre pressure monitoring system.