What causes simultaneous tire pressure warnings on all four tires?

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Simultaneous tire pressure warnings on all four tires are caused by uneven tire pressure among the tires. The solution is to reinflate all four tires to the same pressure level, then press the tire pressure reset button to clear the warning. Strictly speaking, tire pressure refers to the air pressure inside the tires. Tire pressure is like the blood pressure of a car - it plays a crucial role in vehicle performance and power. Tire pressure serves as an indicator of a car's load capacity. The load a vehicle can carry depends on tire pressure levels. According to the relationship between a tire's load index, pressure, and load capacity: higher tire pressure increases load capacity, while lower pressure reduces it.