According to user accounts and experiences shared online, the knocking noise typically occurs at low speeds, particularly during tight turns or when the steering wheel is turned to its maximum position. Some users have also reported feeling vibrations in the steering wheel or a slight loss of control while turning.
Citroen, the manufacturer of the Xsara Picasso, has acknowledged this issue and has released repair guidelines to address the faulty steering rack. If your Xsara Picasso is experiencing this knocking noise, it's recommended to take it to an authorized Citroen dealership or a trusted mechanic to have the steering rack inspected and repaired as necessary. Timely repair and maintenance of the steering system are essential to ensure your safety and the car's performance on the road.