What causes the humming sound when turning the steering wheel?
2 Answers
Reasons for the humming sound when turning the steering wheel are introduced as follows: Friction between plastic components: In this case, you can go to a 4S shop to replace the power steering fluid. Friction between the steering column and floor mat: The solution is to adjust the belt tension or replace the belt. Faulty airbag clock spring inside the steering wheel: Aging of the steering tie rod end with play, leaking of the steering gear dust cover, in this case, you may consider replacing the steering wheel. Steering gear failure: The solution is to replace the steering gear, replace the dust cover, or reapply grease. Faulty plane bearing or top rubber: The solution is to replace the steering tie rod end and perform a wheel alignment.
As a veteran driver with over 20 years of experience, I've encountered steering wheel humming issues quite often, mostly caused by power steering system problems. For hydraulic power steering vehicles, the most common culprit is the power steering pump – especially in older cars where pump wear or contaminated fluid causes that humming sound. With electric power steering, it could be damaged gears inside the steering motor. My advice: first check if the power steering fluid level is adequate, and replace it immediately if it's dirty or low. Also, leaking power steering hoses can cause this too. Pay attention to the sound source – if it's coming from underneath, it might indicate loose tie rod ends or failing wheel bearings. Safety first buddy, get these components checked ASAP. Losing steering control while driving is no joke.
