What to Do About Abnormal Noise from Electric Power Steering on Rough Roads?

[Lopez]

Solutions for abnormal noise from electric power steering on rough roads include: 1. Faulty electric power servo motor, which needs replacement; 2. Aging or damaged seals in the universal joint or internal bearings of the steering gear, requiring replacement; 3. Sticking power assist motor, where pressing the steering wheel manually can eliminate the noise. Electric power steering mainly consists of a torque sensor, speed sensor, motor, reduction mechanism, and electronic control unit. The power steering systems equipped in vehicles are generally categorized into mechanical hydraulic power steering systems, electro-hydraulic power steering systems, and electric power steering systems. Features of electric power steering: 1. High adaptability; 2. Compact structure, easy installation; 3. High reliability, maintenance-free; 4. Equipped with self-diagnosis and safety control functions.

[LaMargaret]

The electric power steering system is making strange noises on rough roads, and I reckon there could be multiple reasons. For instance, components in the steering system might have loosened, or the motor bracket or bolts might not be properly secured, causing friction sounds when driving on bumpy roads. It could also be due to dust or dirt clogging around the steering column, generating noise through friction. More serious issues might involve faults in the control module or sensors, where unstable signals during bumps lead to abnormal sounds. I suggest first parking in a quiet place, opening the hood, and carefully listening to locate the source of the noise to roughly identify the problem area. Then, inspect visible components like the steering shield for any signs of looseness, and manually shake them to check for stability. If there's noticeable wobbling, try tightening them with tools—but avoid forcing it to prevent damaging electronic components. For safety, avoid driving too fast on rough roads to prevent further damage. It’s best to take the car to a professional repair shop as soon as possible for a comprehensive diagnostic check. They can test for electrical issues or determine if parts need replacement, ensuring safe and reliable driving. To prevent such problems, always avoid hard impacts on steering system components and slow down when driving on rough terrain.