What Causes the Steering Wheel Squeaking in Mercedes-Benz?

[VonSimon]

Mercedes-Benz steering wheel squeaking can be caused by friction between the steering column and floor mats, insufficient lubrication in the shock absorber top mount bearings, or loose stabilizer bar bushings. Detailed causes and solutions are as follows: Friction between the steering column and floor mats: If the squeaking noise comes from below the steering wheel when turning, inspect the steering column and car floor mats. Oversized aftermarket floor mats may directly contact the steering column, causing friction during rotation. Lack of lubrication can lead to squeaking. Solution: Apply lubricant. Insufficient lubrication in shock absorber top mount bearings: If the noise comes from outside the vehicle when turning, it might be due to dry shock absorber top mount bearings. Solution: Open the hood and check if the noise originates from the shock absorber top mount area. If confirmed, applying grease should help. If the noise persists after lubrication, replacement is necessary. Loose stabilizer bar bushings: Inspect the stabilizer bar bushings for looseness or damage. Loose or damaged bushings can cause noises not only when turning but also on uneven roads. Loose bushings can be fixed by adding shims, while damaged ones require replacement.

[Elizabeth]

I also heard strange noises when turning my Mercedes before, like small stones rolling inside the steering wheel. Later, when I took it to the repair shop for inspection, the mechanic said it might be due to insufficient lubrication in the steering column or excessive gear clearance in the steering gear. Another possibility is an issue with the clock spring under the steering wheel, which connects the horn and multifunction buttons—if it becomes loose, it can produce a clicking sound. By the way, sometimes worn tie rod ends can also cause noises, especially when turning, making the sound more noticeable. I suggest you first check if the dust boot on the steering column is damaged, as dust ingress can cause friction and strange noises. Don’t delay addressing this issue—the steering system is crucial for driving safety. It’s best to have a professional locate the exact source of the noise using a stethoscope as soon as possible. Disassembling the steering wheel yourself is too risky.

[LaLily]

It's quite common for Mercedes-Benz vehicles to develop steering wheel noises after prolonged use. My car used to make creaking sounds when turning. Later, I found out it was due to aging of the top mount bearing in the shock absorber. This bearing connects the body to the suspension, and when it rusts or lacks lubrication, it creates friction noise during steering. Additionally, if foreign objects enter the gear mechanism of the electric power steering system, it can produce subtle noises, especially noticeable during low-speed U-turns. I recommend testing on a quiet road: if there's no noise when driving straight but sounds appear during turns, it's likely an issue with the tie rods. If noises occur even when turning the wheel while stationary, it might be a problem with the clock spring or column bearing. If it's been raining frequently recently, also check if the steering column waterproof boot has aged and allowed water ingress, as this can cause metal parts to rust and create noise.

[PrestonLynn]

I've had firsthand experience with steering wheel noises, especially during cold winter starts. In luxury cars like Mercedes-Benz, the precision steering systems amplify even the slightest gaps. The most common cause is friction from plastic parts expanding/contracting with temperature - like where the steering wheel cover meets the dashboard. Loose steering system bolts are another culprit; my friend's car had a loose bottom mounting bolt that caused rattling on bumpy roads. For DIY troubleshooting: test at different turning speeds - if noise disappears during quick turns, it's often the clock spring; persistent low-speed noises may indicate gear lubrication issues. Never spray lubricant directly into the steering column as it could damage electrical components.