If your tyre pressure warning light is on, it means one or more tyres may be underinflated or there is a fault in the tyre pressure monitoring system (TPMS). Correct tyre pressure is essential for safe handling, fuel efficiency, and tyre life. Driving with low tyre pressure can increase the risk of blowouts and uneven wear, so the warning should not be ignored.

What does it mean if the tyre pressure warning light is on?

The warning light indicates that tyre pressure has dropped below the recommended level or the TPMS sensors are not functioning correctly. The light may also flash if there is an electronic fault in the system.

Common causes of a tyre pressure warning light

• Underinflated tyres due to normal air loss
• Puncture or slow leak in a tyre
• Faulty TPMS sensor or dead sensor battery
• Incorrect tyre size or mismatched tyres
• Recent tyre change or rotation without system reset

Why do you need to fix this problem quickly?

Driving with incorrect tyre pressure can reduce grip, increase braking distances, and cause uneven wear. Underinflated tyres also increase fuel consumption and risk overheating, which can lead to a blowout.

How do you know when to get it checked?

You should book an inspection if:

• The tyre pressure warning light stays on after inflating tyres
• The light flashes or comes on intermittently
• You notice a tyre losing air more quickly than normal
• The steering feels heavy or the car pulls to one side

What happens during an assessment?

A mechanic will:

1. Check all tyre pressures and inflate to the manufacturer’s specifications
2. Inspect tyres for punctures, leaks, or damage
3. Test the TPMS sensors and reset the system if required
4. Replace faulty sensors or sensor batteries if necessary
5. Confirm correct operation of the warning light and TPMS

How much does it cost to fix?

Reinflating tyres or resetting the system may be free or cost $50–$100. Replacing a faulty TPMS sensor typically costs $120–$300 per sensor, depending on the vehicle.

Is it unsafe to drive with the tyre pressure warning light on?

Yes. Driving with low tyre pressure reduces safety, increases tyre wear, and risks a sudden blowout. If the light is on, you should check your tyres immediately and arrange an inspection if the warning does not clear.