What are the causes of BMW steering system failure?
1 Answers
BMW steering system failures are primarily caused by excessive air in the power steering system, leading to abnormal vehicle steering; foreign objects in the steering hydraulic lines causing the steering pump flow control valve to stick; and loose connections in the power steering system resulting in steering fluid leakage. Below are specific causes: Unusual noises during steering: The cause of unusual noises when turning the steering wheel is generally due to damage to the kingpin and bushing or failure of the column thrust bearing. In such cases, turning the steering wheel left and right can help identify the source of the noise for disassembly and inspection. Steering gear oil leakage: Oil leakage in the steering gear typically occurs at three locations: the upper cover of the steering gear, the connection between the steering shaft and the pitman arm, and the side end cover. This is usually caused by prolonged vehicle use leading to seal failures. Since these areas are equipped with sealing rings, replacing the oil seals and sealing rings can resolve the issue. Difficulty in steering wheel return: Most vehicles have an automatic return function for the steering wheel. If the same amount of force is required to return the steering wheel as when turning it, this indicates a malfunction in the return function. Such issues are usually found in the mechanical parts of the steering system, such as insufficient lubrication causing wear between the steering knuckle kingpin and bushing, lack of lubrication in the universal joint connecting the steering wheel to the steering gear, or rust in the tie rod end due to insufficient lubrication. These problems can be addressed by visiting the appropriate repair facility.
