Why is My Car Making a Humming Noise?

June 26, 2024


Why is Your Car Making a Humming Noise?

Have you ever wondered why your car is making a strange humming noise? If so, you’re not alone. Many drivers experience this issue, and it can be concerning. At Wayside Garage, we recently had a client come in with a similar problem on her 2002 Mercedes. Let's dive into what might be causing that humming noise and how to address it.


Common Causes of Humming Noises


Wheel Bearings

  • Symptoms: A loose wheel bearing can cause a humming or growling noise, especially noticeable when driving and turning.
  • Inspection: During our inspection, we found significant play in the wheel bearing, which is a clear indicator of wear. A wheel should be tight and not wiggle when checked.


Brake Components

  • Impact on Brakes: If the wheel bearing issue is severe, it can affect your brake rotors, causing uneven wear and reducing braking efficiency. This can also lead to a pulsating feeling in the brake pedal.


Other Potential Causes

  • Tire Issues: Uneven tire wear or improperly balanced tires can also create a humming sound.
  • Transmission or Differential Problems: These can sometimes be the source of the noise if they are worn or need servicing.


Inspection and Maintenance Tips

Regular Inspections: It’s crucial to have your vehicle inspected regularly. At Wayside Garage, we recommend checking the wheel bearings at least every six months as part of our comprehensive inspection service.

Maintenance Plan: Adhering to a maintenance plan can prevent such issues. For example, we suggest repacking wheel bearings every 30,000 miles or every 30 months for optimal performance.


What We Did for Our Client

Our ASE-certified technician, Jonathan, discovered that the wheel bearings on the client's Mercedes were beyond repair and needed replacement. We replaced the bearings and hubs, ensuring the vehicle is safe to drive.


Hearing a humming noise from your car can be alarming, but it often points to common issues like wheel bearings or tire problems. Regular maintenance and inspections are key to catching these problems early. If you’re experiencing similar issues, don't hesitate to bring your car to Wayside Garage. Our experienced technicians are here to help keep your vehicle running smoothly and safely.


Stay safe on the road by scheduling a comprehensive inspection with us. Call (831)-899-2425 or visit Wayside Garage to book your appointment today!

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