my Toyota Highlander makes a clunking sound when I go over bumps

Toyota Highlander Third Generation (2014-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

517 words

Problem Statement

Learn how to diagnose and fix clunking sounds in the suspension of your Toyota Highlander. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Suspension

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always ensure the vehicle is securely supported on jack stands before working underneath.
•Allow the vehicle to cool before working on heated components.

Symptoms

•Clunking noise when traversing bumps or uneven surfaces
•Possible rattling sounds during driving
•Increased body roll while turning
•Vibration felt in the steering wheel
•Uneven tire wear

Diagnostic Steps

1
Inspect the suspension components visually for wear or damage.
2
Perform a bounce test on each corner of the vehicle to check for proper shock absorber functionality.
3
Check for loose or damaged mounting hardware in the suspension system.
4
Inspect the sway bar links and bushings for signs of wear or failure.
5
Examine the struts and shocks for leakage or physical damage.

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

•Floor jack
•Jack stands
•Socket set
•Torque wrench
•Pry bar
•Safety glasses

Parts Required

•New struts/shocks (if worn)
•Sway bar links
•Sway bar bushings

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Diagnostic Steps

1
Inspect the suspension components visually for wear or damage.
2
Perform a bounce test on each corner of the vehicle to check for proper shock absorber functionality.
3
Check for loose or damaged mounting hardware in the suspension system.
4
Inspect the sway bar links and bushings for signs of wear or failure.
5
Examine the struts and shocks for leakage or physical damage.

Solution

1. Preparation

Tools Required: Floor jack, jack stands, socket set, torque wrench, pry bar, and safety glasses.
Lift the vehicle using a floor jack and secure it with jack stands. Ensure the vehicle is on a flat surface.

2. Inspect and Replace Suspension Components

Step 1: Inspect Struts/Shocks
- Remove the wheel to access the suspension components.
- Check the struts and shocks for any oil leakage, dents, or physical damage.
Step 2: Replace Struts/Shocks (if necessary)
- Remove the strut assembly by loosening the top mounting bolts in the engine compartment and the bottom bolts at the knuckle.
- Replace with new struts/shocks, ensuring they are torqued to manufacturer specifications (typically around 50-60 ft-lbs for lower bolts).

3. Replace Sway Bar Links and Bushings

Step 1: Remove Old Links
- Disconnect the sway bar from the links using a socket set.
- Inspect the sway bar bushings for wear; replace if cracked or degraded.
Step 2: Install New Links and Bushings
- Install new sway bar links, ensuring they are tightened to the manufacturer’s torque specifications.
- Replace the sway bar bushings if necessary, ensuring the sway bar is properly aligned.

4. Reassemble and Test

Reattach the wheel and lower the vehicle.
Perform a bounce test to ensure the suspension is functioning correctly.
Test drive the vehicle over bumps to confirm that the clunking sound has been resolved.