What Are the Possible Reasons for Hearing a Collision Sound While Reversing Without Visible Damage to the Car?

[ArielMarie]

Hearing a collision sound while reversing without visible damage to the car may be due to aging of the steering tie rod ball joint, leaking of the steering gear dust cover, etc. Below are detailed explanations and solutions: 1. Aging of the steering tie rod ball joint Solution: The steering tie rod ball joint needs to be replaced, and a four-wheel alignment is required after replacement. 2. Leaking of the steering gear dust cover Solution: Replace the dust cover and reapply grease to resolve the issue. 3. Dirty power steering fluid: If the power steering fluid is too dirty, it increases the pressure in the power steering system, causing the power steering pump to produce abnormal noises. Solution: Ensure the power steering fluid is clean. 4. Steering wheel noise: When turning the steering wheel smoothly, a clicking sound may occur. Turning the steering wheel one full circle may produce three clicking sounds because the steering column has three automatic return positions per circle, which causes this noise. Solution: Turning off the turn signal will make this sound disappear.