What should I do if the tyre-pressure warning stays on after inflating the tyres?

Confirm all tyres are set correctly when cold, reset or recalibrate the system as the handbook requires and investigate a leak or sensor fault if the warning returns.

In relation to “What should I do if the tyre-pressure warning stays on after inflating the tyres?”, a warning light or new driving symptom is most useful when you record when it appears, what the car is doing at the time and whether any other warning or smell appears with it.

For “What should I do if the tyre-pressure warning stays on after inflating the tyres?”, after setting all tyres correctly, use the vehicle’s reset or relearn procedure if required. If the warning returns, check for a slow puncture, damaged valve or sensor fault rather than repeatedly adding air.

For “What should I do if the tyre-pressure warning stays on after inflating the tyres?”, the mechanical principles here are not unique to Northern Ireland, but the roadworthiness consequence is relevant to an NI driver. Use the vehicle handbook for model-specific instructions and the attached official sources — nidirect - The Highway Code for Northern Ireland, nidirect - MOT and vehicle testing, and GOV.UK - Vehicle recalls and faults — for legal or testing context. A dashboard symbol can mean different things between manufacturers, so the exact symbol and behaviour matter.

Practical next step for “What should I do if the tyre-pressure warning stays on after inflating the tyres?”: record the warning or symptom, check the handbook and basic safe-to-check items, and arrange diagnosis if the cause is not obvious. Stop driving if there is a red warning, loss of braking/steering, severe overheating, heavy smoke, major fluid loss or any other sign the car may be unsafe.