Tire pressure monitoring light

Tire pressure monitoring light  - Instrument panel - Instruments and controls - Volvo XC90 Owners Manual - Volvo XC90

system uses sensorsThe tire pressure monitoring system uses sensors mounted in the tire valves to check inflation pressure levels. When the vehicle is moving at a speed of approximately 20 mph (30 km/h) or faster, these sensors transmit inflation pressure data to a receiver located in the vehicle.

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