What causes the hissing sound when turning the steering wheel?
4 Answers
The reasons for abnormal noise when turning the steering wheel are as follows: Friction sound between the steering column and floor mat: If the abnormal noise is heard from below the steering wheel when turning, check the steering column and car floor mat. An oversized aftermarket floor mat may directly contact the steering column, causing friction during rotation. Lack of lubrication will produce friction noise. Solution: Apply lubricant. Clock spring malfunction: If the sound comes from inside the steering wheel, it's caused by interference from the clock spring inside. Solution: Remove the steering wheel clock spring, apply grease, and observe for abnormal noise. If the noise persists, the clock spring is damaged and needs replacement.
I've been in auto repair for twenty years and have seen countless cases of steering wheels making squeaking noises, usually indicating an issue with the steering system. The most common cause is insufficient power steering fluid—especially in older cars, where leaks or contaminated fluid can create friction and noise. Another frequent issue is a loose or slipping belt, which squeaks when turning the wheel, particularly noticeable during cold starts. Sometimes, the linkage mechanism under the steering wheel lacks lubrication, such as when the steering column bearings rust or ball joints wear out, causing metal-on-metal friction noises. For hydraulic power steering systems, an aging pump could also be the culprit. Don’t underestimate these sounds—they signal component wear, and neglecting repairs can increase steering resistance or even compromise safety. I recommend checking the power steering fluid level and belt tension immediately, replacing parts or applying lubricant if necessary. It’s best to have a professional shop conduct a thorough diagnosis to prevent minor issues from escalating into major problems.
Last time I drove, I also encountered a squeaky steering wheel, which gave me quite a scare, so I looked into it immediately. Checking the manual revealed that the steering fluid was too thick, causing abnormal pump pressure, and low fluid levels can easily lead to overheating and friction noises. Additionally, if the belt has aged and hardened, it can't tighten properly and slips, making noise—especially when turning, as the load increases, the noise becomes more noticeable. From my own experience, even new cars with electric power steering systems can sometimes make noise, possibly due to dust accumulation in the motor needing cleaning. Worn internal components of the steering gear are another cause, such as rusted universal joints or stuck spool valves. Listening to the location of the noise helps diagnose—squeaking near the lower part of the steering wheel is often a power steering system issue. Don’t delay addressing it; squeaking isn’t just annoying but can also lead to sudden changes in steering force, affecting driving. A simple approach is to first check the fluid reservoir and belt condition—DIY fluid changes or adjusting tension might solve it. Otherwise, get it repaired promptly—don’t skimp on small costs.
Steering wheel squeaking is common when I'm driving hard, mostly due to belt issues. Worn-out or oil-contaminated belts slip and make noise, especially during forceful turns. Low power steering fluid causing pump dry-rotation also creates friction sounds. Sometimes it's lack of lubrication or rust in steering mechanism components like clips or linkages that generate noise when twisted. Novices often overlook this, but I advise against DIY disassembly. First check fluid levels and belt condition, then refill with proper power steering fluid. Relatedly, such noises affect driving comfort and increase energy consumption/fuel usage. Regular maintenance and lubricating critical components can prevent this.
