Investigate soonamber light
Tyre Pressure Monitoring (TPMS)
One or more tyres are under-pressure — check them today.
What it means
An amber horseshoe-shaped tyre cross-section with an exclamation mark. The TPMS sensors have detected that at least one tyre is significantly under the recommended pressure. Under-inflated tyres wear faster, use more fuel, handle worse and can fail at speed.
What to do
- 1Check pressures on all four tyres (and the spare) — ideally cold.
- 2Inflate to the figures on the door-pillar sticker or in the handbook.
- 3If a tyre keeps going down, it has a puncture or valve fault — get it checked.
- 4After inflating, the light may need a short drive (and sometimes a reset) to clear.
Likely causes
- •Slow puncture
- •Natural air loss in cold weather (around 1 PSI per 10 °C drop)
- •Faulty TPMS sensor (typically inside the valve)
- •Recently changed wheels without resetting the system
Rough UK cost
Air: free. Puncture repair: £20–£40. TPMS sensor: £60–£120 per wheel.
Prices are a guide only — always get a written quote before any work.
Heads up: Carautonomy is for general guidance only. If your car is behaving oddly or any red light is on, get it inspected by a qualified mechanic.