What causes the steering wheel noise in Audi A3?

[MacLillian]

Main causes of steering wheel noise during turning: lack of lubrication in the steering column resulting in high friction, insufficient power steering fluid, universal joint failure, aging and hardening of the rubber bushings in the suspension stabilizer bar links, or damaged plain bearings. During subsequent driving, pay attention to the following points: Avoid turning the steering wheel while stationary: Avoid turning the steering wheel when the vehicle is stationary; try to steer only after the vehicle starts moving. After the vehicle comes to a complete stop, return the steering wheel to the central position to prevent the suspension system and tires from bearing unnecessary load. Avoid full-lock steering: When making a U-turn, try to avoid turning the steering wheel to its full-lock position.