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Front Suspension Knocking Noise on My 2021 G80 - What could it be?

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Mike T. · rep 0 · May 24, 3:38 PM · 1 replies · solved · Question

Vehicle: 2021 Genesis G80 3.5T

Hey everyone,

I've been noticing a new, rather annoying knocking sound coming from the front end of my 2021 Genesis G80 3.5T. It's most noticeable when I'm driving over small bumps, potholes, or uneven pavement, especially at lower speeds. It sounds like it's coming from the passenger side front wheel area.

It's not a constant noise, but it's consistent when the suspension is articulating. I'm worried it might be something serious with the suspension or steering components. I haven't hit any major potholes recently, so I'm a bit puzzled.

Has anyone else experienced this with their G80 or a similar Genesis model? What should I be looking for? Any advice on diagnosing this before I take it into the dealership would be greatly appreciated. Thanks!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 24, 3:38 PM

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ClearTheCode admin answer:

A knocking sound from the front suspension of your 2021 Genesis G80 3.5T is a common complaint that can stem from several issues within the 'Brakes & Suspension' system. Addressing this promptly is important for both ride comfort and safety.

Here are the most common causes and diagnostic steps:

  1. Worn Sway Bar End Links: These small links connect the sway bar to the suspension. When their bushings wear out, they can create a clunking or knocking sound, especially over uneven surfaces or when turning. This is one of the most frequent culprits.
  2. Damaged Control Arm Bushings: The control arms connect the wheel hub to the vehicle's frame. If the rubber bushings within these arms degrade or crack, they can allow excessive movement and produce a knocking noise.
  3. Loose or Worn Strut Mounts/Bearings: The top mount of the strut assembly can wear out, leading to play and noise. The strut bearing, which allows the strut to rotate when steering, can also fail.
  4. Ball Joint Wear: Ball joints are critical pivot points in the suspension. Worn ball joints can cause a knocking sound, especially when the suspension moves up and down.
  5. Loose Caliper Bolts or Brake Components: While less common for a 'knocking' sound, sometimes loose brake caliper bolts or other brake hardware can mimic a suspension noise. A quick check of your brake components is always a good idea.

When to See a Shop:

  • Immediate Inspection: If the knocking sound is accompanied by a change in steering feel, vehicle stability, or braking performance, it's crucial to have it inspected by a professional mechanic immediately. These could indicate a more severe safety issue.
  • DIY Limitations: While a visual inspection can reveal obvious damage, pinpointing the exact source of a suspension knock often requires lifting the vehicle and using specialized tools to put pressure on components to check for play. If you're not comfortable with this, or if a visual inspection doesn't reveal the problem, a qualified Genesis technician can perform a thorough diagnostic.
  • Warranty: Given your vehicle is a 2021 model, it's likely still under warranty. Suspension components are typically covered, so taking it to a Genesis dealership for diagnosis and repair would be the most cost-effective solution.
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