That little tyre warning light on your dashboard — what does it mean and what should you do when it comes on?
Since November 2014, all new cars sold in the EU and UK must be fitted with a Tyre Pressure Monitoring System (TPMS). This system alerts you when one or more tyres drop below their recommended pressure, helping to prevent blowouts and improve fuel efficiency.
Direct vs Indirect TPMS
Direct TPMS uses pressure sensors mounted inside each wheel to measure actual tyre pressure in real-time. Indirect TPMS uses the ABS wheel speed sensors to detect pressure loss — a deflated tyre rotates at a different speed. Direct systems are more precise; indirect systems are lower cost.
What to Do When the TPMS Light Comes On
- Check all four tyres for visible damage or deflation
- Inflate any under-pressure tyres to the correct level
- Drive gently until you've had the tyres checked
- If all pressures are correct but light remains, the sensor may need resetting or replacing
TPMS and Tyre Replacement
When fitting new tyres, TPMS sensors must be handled carefully — they can be damaged during tyre removal. We reset and relearn TPMS sensors as part of our standard mobile tyre fitting service at no extra charge.
TPMS light on? We diagnose and reset sensors as part of our mobile tyre service. Call 020 3910 1898.
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