Treat the warning as a prompt to check every tyre with a pressure gauge. A steady warning often indicates one or more low tyres; a flashing sequence may indicate a system or sensor fault.
TPMS warning light explained is easier to understand when you separate the immediate decision from the checks behind it. Treat the warning as a prompt to check every tyre with a pressure gauge.
Tyre symptoms rarely diagnose themselves. The same vibration, noise or pressure loss can have more than one cause, and continuing to drive can turn a repairable issue into a replacement—or conceal a wheel or suspension fault.
Short answer: Treat the warning as a prompt to check every tyre with a pressure gauge.
What you need to know
The important detail
A steady warning often indicates one or more low tyres; a flashing sequence may indicate a system or sensor fault.
Look for a pattern: when it happens, which corner appears affected and whether pressure or speed changes it.
What it means in practice
Temperature changes can alter pressure, but repeated warnings still need investigation.
A symptom can originate in the tyre, wheel, steering or suspension, so avoid buying parts before the cause is established.
What drivers often miss
TPMS does not replace visual condition, tread-depth and manual pressure checks.
Comparing all four corners often reveals whether the issue is isolated or part of a wider wear pattern.
If handling feels abnormal or a tyre appears low, stop somewhere safe rather than relying on the warning system.
A sensible check, step by step
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Note when the symptom started and whether speed, steering or weather changes it.
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Compare all four tyres for pressure, damage and uneven wear.
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Ask a fitter to identify the cause before authorising replacement work.
Common mistakes to avoid
- Relying on a single quick glance instead of checking the whole tyre and its inner edge.
- Using a generic number or internet tip when the vehicle handbook gives a specific requirement.
- Assuming a tyre is safe because no dashboard warning is showing.
What to do next
Check the complete tyre specification and condition in good light. Write down anything that differs between the four corners of the car. If the tyre may be unsafe, avoid unnecessary driving and arrange an inspection by a competent tyre professional.
Quick questions
Can I rely on a visual check?
No. A visual check is useful for obvious damage, but pressure, tread depth and internal condition may need the correct gauge or a professional inspection.
Should I check only before an MOT?
No. Tyres change between tests. Regular checks and a check before long journeys are a better routine.
What if I am still unsure?
Treat uncertainty about damage, fitment or pressure as a reason to ask a competent tyre professional before continuing a journey.
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