What is your light doing?
It came on and stays on steady
Usually a tyre is low. Check all four pressures against the sticker in the driver’s door frame and pump them up. If the light is still on after a short drive, it is likely a fault.
It flashes when I start the car, then stays on
That is how most cars show a system fault, very often a sensor with a flat battery. Pumping the tyres up will not clear it. It will also fail an MOT on cars first used from 2012.
It came on after new tyres or a wheel swap
A sensor may have been damaged, or the car has not learned the sensors in the other wheels. Programming often fixes it; a damaged sensor needs replacing.
Check your pressures first
Check all four tyres when they are cold and set them to the pressure in your handbook or on the sticker in the door frame. A cold night can drop the pressure enough to trigger the light. Some cars need a short drive, or a reset in the settings menu, before the light goes out.
Why a TPMS fault happens
- A sensor battery has run flat, which is the most common cause.
- A sensor or valve is damaged or corroded.
- Winter wheels or a spare without sensors, or with sensors the car has not learned.
- New tyres or a wheel swap where the sensors were not set up again.
What the £25 diagnosis covers
We read each sensor and the car’s system to find which wheel is at fault and why. Then you get a clear answer: a sensor to replace, a relearn, or a tyre problem. If it is a sensor, replacing one costs £75, with the sensor, fitting and programming included.
Send us a photo of the light
A photo of the dashboard and your registration is often enough for us to tell you what it is likely to be.