What causes the humming sound when the XC60 is driving at low speed?

[OAlessandra]

The reasons for the humming sound when the XC60 is driving at low speed are: 1. Damaged wheel bearing: This phenomenon occurs when a wheel bearing of the vehicle is damaged. Long-distance driving places high demands on the wheel bearings. Bearings that are of poor quality or have been used for a long time may fatigue and become damaged under prolonged high-speed operation, resulting in abnormal noise. 2. Inaccurate four-wheel alignment: A rhythmic humming noise occurs at low speeds, and the noise weakens at high speeds. The cause of the fault: The vehicle's four-wheel alignment is inaccurate. Long-distance driving causes significant wear on the tires, leading to uneven tire wear and abnormal noise.