When the weather is cold, you will hear a buzzing sound. What is the reason?

In cold weather, when you hit the direction, you may hear buzzing noise for several reasons:

1. Viscosity increase of lubricant in winter: at low temperature, the viscosity of lubricant will increase, resulting in poor fluidity. This may cause friction when the steering system rotates, resulting in buzzing.

2. Electric power steering system failure: If your car is an electric power steering system, in cold weather, the performance of the battery may be affected, resulting in insufficient or unstable steering power, resulting in abnormal noise.

3. Wear of steering pump or steering gear: Over time, steering pump or steering gear may wear, resulting in increased friction between internal parts, thus generating buzzing noise.

4. Suspension system problem: The rubber bushing or other parts of the suspension system may become stiff in cold weather, resulting in friction during steering, thus generating abnormal noise.

5. Damage to the hub bearing: Damage to the hub bearing may cause abnormal sound when the wheel rotates, especially when turning.

In order to solve this problem, it is suggested to send the vehicle to a professional repair shop for inspection and maintenance as soon as possible.