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How to Reset the Tyre Pressure Warning Light

Model: (Various brands) Various
Part: Tire pressure warning light

Video tutorial

The low pressure warning light (horseshoe symbol with an exclamation mark) illuminates when one or more tyres are under-inflated. The main causes are as follows: 1) Actually low pressure: tyres naturally lose air (1-2 psi per month); even the spare wheel, if monitored, can keep the light on. 2) Faulty TPMS sensor: if damaged or worn, it may signal a problem even with correct pressure. 3) Sensor not reset after inflation: some cars require a manual reset via button, menu, or specific sequence. 4) Temperature fluctuations: in cold weather, pressure drops and may fall below the recommended level. 5) Slow leak: puncture from a nail, damaged valve, or compromised bead can cause gradual drops. 6) TPMS malfunction: faults in wiring, control module, or software can keep the light on. The solution therefore depends on the cause: inflate, reset, repair, or replace the sensor.


Posted on 12 September 2026 by ScegliAuto


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