What Causes the Squeaking Sound When the Rear of the Car is Pressed Down?
2 Answers
Introduction to the causes of squeaking when the rear of the car is pressed down: 1. Damaged shock absorber: When the vehicle's shock absorber is damaged, the coordination between its components is compromised, causing a creaking noise when operating on bumpy roads. 2. Damaged suspension spring: The front shock absorber top mount, made of rubber material, primarily assists the shock absorber and suspension spring in providing damping and cushioning effects. When the shock absorber top mount is damaged due to excessive wear, it not only produces abnormal noises during operation but also generates sounds when turning the steering wheel while stationary, even if the shock absorber is not in use.
As a seasoned driver with years of experience, I've encountered quite a few cases of squeaking noises when the rear of the car compresses. This is usually caused by aging or damaged rubber bushings in the rear suspension system. These rubber bushings are located between the suspension arms and the axle, serving as buffers. Over time, they can dry out, crack, and harden, causing squeaking sounds when rubbing against metal components. Shock absorbers may also leak oil or springs may rust, leading to similar noises. If the sound is particularly noticeable after driving on bumpy roads, I recommend performing a simple check first: find a flat surface and firmly press down on the rear trunk to see if the noise reappears. Don't delay too long, as this could potentially escalate suspension issues, affecting driving stability and safety. Especially during long-distance highway driving, increased vibrations can loosen bolts and heighten risks. I suggest visiting a professional repair shop for diagnosis and replacement of new bushings. The cost isn't high but can prevent major overhauls. Regular maintenance should pay extra attention to suspension conditions.
