TPMS Warning Light On? Causes, Reset & UK Mobile Diagnosis
What does TPMS mean and how to reset TPMS — pressure first, then sensor faults in Birmingham, Manchester, Glasgow and London traffic.
The TPMS warning does not always mean a puncture — it means the system thinks pressure is wrong or a sensor is not reporting. In UK stop-start traffic (London, Leeds inner ring, Edinburgh), temperature swings can move pressures slightly, but persistent lights after inflation usually mean a dead sensor battery or damaged sensor. People also ask: Can I pass MOT with TPMS light on? — usually not where TPMS is part of the test.
What to do first
- Check and adjust all four pressures to the placard value when cold.
- Drive a few miles above the reset threshold speed (often ~15 mph).
- If the light remains, book TPMS diagnosis.
MOT relevance
TPMS faults on post-2012 cars can fail MOT — do not ignore a permanent warning before a test in Enfield, Coventry or Portsmouth.
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