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Why does my 2020 Highlander make a thumping noise when driving over bumps? - Toyota Highlander
Home/Cars/Toyota/Highlander/Fourth Generation (2020-present)/Why does my 2020 Highlander make a thumping noise when driving over bumps?

Why does my 2020 Highlander make a thumping noise when driving over bumps?

Toyota Highlander Fourth Generation (2020-present)

Error Codes
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
4 min read
601 words

Problem Statement

Learn how to diagnose and fix thumping noises in your 2020 Toyota Highlander with our detailed guide on symptoms, causes, and repair steps.

Affected Component
suspension, exhaust system, heat shield, tires, body mounts

Symptoms

  • •A noticeable thumping or clunking noise when driving over bumps or uneven surfaces.
  • •The noise may vary in intensity depending on the severity of the bump.
  • •Potential vibrations or rattles accompanying the thumping noise.

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

  • ✓Test the affected component to ensure it functions correctly
  • ✓Check for any error codes or warning lights
  • ✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • •Flashlight
  • •jack
  • •jack stands
  • •basic hand tools
  • •wrench set or socket set
  • •tire pressure gauge

Additional Information

Affected Component
suspension, exhaust system, heat shield, tires, body mounts
Difficulty
medium
Severity
medium
Tools Required
6 items

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Diagnosing Thumping Noise in a 2020 Toyota Highlander

Possible Causes
  1. Worn Suspension Components: Bushings, struts, or shocks that are worn can cause noise when the suspension travels.
  2. Loose or Damaged Exhaust System: A loose exhaust component can hit the undercarriage or frame.
  3. Loose Heat Shield: A heat shield that is not properly secured can rattle or thump over bumps.
  4. Tire Issues: Improperly mounted or damaged tires can create noises when they flex over bumps.
  5. Body Mounts: Worn or damaged body mounts can lead to noise as the body shifts over bumps.
Step 1: Visual Inspection

Tools Required: Flashlight, jack, jack stands, and basic hand tools.

  1. Lift the Vehicle: Safely lift the vehicle using a jack and secure it with jack stands.
  2. Inspect Suspension Components:
    • Check for any visible wear or damage in control arms, struts, shocks, and anti-roll bar links.
    • Look for any torn or cracked bushings.
Step 2: Shake Test

Tools Required: None.

  1. Shake the Suspension: With the vehicle lifted, manually shake the suspension components by pushing and pulling on them to check for excessive play or noise.
  2. Listen for Noise: Note any sounds that occur during this test.
Step 3: Check Exhaust and Heat Shields

Tools Required: Wrench set or socket set.

  1. Inspect the Exhaust System: Look for any loose connections, hangers, or damage.
  2. Check Heat Shields: Ensure that all heat shields are properly secured and not contacting any other components.
Step 4: Tire Inspection

Tools Required: Tire pressure gauge, basic hand tools.

  1. Check Tire Pressure: Ensure all tires are inflated to the manufacturer’s recommended specifications.
  2. Inspect for Damage: Look for any bulges, cuts, or uneven wear on the tires.
Step 5: Check Body Mounts

Tools Required: Basic hand tools.

  1. Inspect Body Mounts: Look for any signs of wear or damage in the body mounts that connect the vehicle body to the frame.
Repair Instructions
If Worn Suspension Components are Found
  1. Replace Worn Parts:
    • Remove the affected components (e.g., strut assembly, control arms).
    • Install new parts according to manufacturer specifications.
    • Torque all fasteners to the manufacturer’s specifications.
If Exhaust System is Loose
  1. Secure Exhaust Components:
    • Tighten any loose bolts or nuts in the exhaust system.
    • Replace any damaged hangers if necessary.
If Heat Shields are Loose
  1. Re-secure or Replace Heat Shields:
    • Tighten bolts or fasteners for the heat shield.
    • If damaged, replace the heat shield.
If Tires are the Issue
  1. Replace or Repair Tires:
    • If tires are damaged, replace them with new ones.
    • If they are merely unbalanced, take them for a rebalancing.
If Body Mounts are Worn
  1. Replace Body Mounts:
    • Remove the old body mounts using appropriate tools.
    • Install new mounts and torque to specifications.
Final Steps
  1. Test Drive: After repairs, take the vehicle for a test drive to confirm that the thumping noise has been resolved.
  2. Final Inspection: Check all repairs for tightness and integrity after the test drive.
Conclusion

By following these diagnostic and repair steps, you can effectively identify and resolve the thumping noise issue in your 2020 Toyota Highlander. If the problem persists despite these efforts, consult a professional technician for further assessment.