What you might be seeing
- Horseshoe-with-! symbol lit
- One tyre visibly lower
- Light returns days after inflating
The likely causes, honestly ranked
- Slow puncture (nail, screw)
- Corroded valve or rim seal leak
- Temperature drop (pressure falls in cold snaps)
- Sensor battery or fault (light flashes then stays on many systems)
Do this now
- Inflate all tyres to the placard figures and reset per the handbook
- Mark which tyre was low; if it drops again, book a puncture check
- Before long journeys, check pressures cold — including the spare if you have one
What to avoid
- Re-inflating the same tyre weekly as a lifestyle
- Ignoring it because "the tyres look fine" — modern profiles hide serious pressure loss
Who fixes this
Related problems
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Frequently asked questions
Can I drive with the TPMS light on?
Check pressures at the first safe opportunity. A little low: inflate and monitor. Visibly flat or rapidly losing: stop and get tyre help to the car.
Why is the light on in cold weather?
Pressure drops with temperature. A cold snap can light TPMS on all-round-slightly-low tyres — set them to spec and it should clear.
The light flashes then stays on — what is that?
On many cars that pattern means a sensor fault rather than low pressure. Still check pressures manually, then have the sensor read.
Written and reviewed by the Escargo team · Updated 9 August 2026 · Escargo shows real local businesses only — where none is listed yet, the page says so honestly.