Tyre pressure monitoring uses sensors located inside the air valve in each wheel. When the car is driven at about 30 km/h the system detects the tyre pressure. If the pressure is too low then a warning lamp 
illuminates in the combined instrument panel and one of the following messages is shown:
- Tyre pressure low Check front right tyre
- Tyre pressure low Check front left tyre
- Tyre pressure low Check rear right tyre
- Tyre pressure low Check rear left tyre
- Tyre needs air now Check front right tyre
- Tyre needs air now Check front left tyre
- Tyre needs air now Check rear right tyre
- Tyre needs air now Check rear left tyre
- Tyre pressure system Service required
If wheels without TPMS sensors are used or if a sensor has failed then Tyre pressure system 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 occurs in the TPMS system the warning lamp 
in the combined instrument panel will flash for approx. 1 minute and then illuminate with a constant glow. A message is also shown in the combined instrument panel.
in the combined instrument panel will flash for approx. 1 minute and then illuminate with a constant glow. A message is also shown in the combined instrument panel.