why does my Toyota Highlander Third Generation (2014-2019) make a clunking noise over bumps

Toyota Highlander Third Generation (2014-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

546 words

Problem Statement

Discover how to diagnose and fix clunking noise over bumps in Toyota Highlander (2014-2019). Step-by-step guide with diagnostic steps and repair instructions.

Affected Component

Suspension

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Allow the vehicle to cool before working on suspension components.
•Ensure the vehicle is securely lifted and supported before working underneath.

Symptoms

•Clunking noise heard when driving over bumps
•Noise may vary in intensity based on the size of the bump
•Potential rattling sounds when driving on uneven surfaces
•Feeling of looseness or instability in the suspension
•Increased wear on suspension components over time

Diagnostic Steps

1
Inspect the undercarriage for loose or damaged components.
2
Check the condition of the shock absorbers and struts for leaks or wear.
3
Examine the sway bar links and bushings for signs of play or damage.
4
Verify the condition of the control arm bushings for deterioration.
5
Test drive the vehicle over bumps while listening for the noise and noting any changes in handling.

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

•Socket set
•Torque wrench
•Wrench set
•Pry bar
•Spring compressor

Parts Required

•Shock absorbers/struts
•Sway bar links and bushings
•Control arm bushings

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Diagnostic Steps

1
Inspect the undercarriage for loose or damaged components.
2
Check the condition of the shock absorbers and struts for leaks or wear.
3
Examine the sway bar links and bushings for signs of play or damage.
4
Verify the condition of the control arm bushings for deterioration.
5
Test drive the vehicle over bumps while listening for the noise and noting any changes in handling.

Solution

1. Preparation

Gather tools and parts.
Park the vehicle on a flat surface and engage the parking brake.
Wear safety glasses and gloves for protection.

2. Inspect and Replace Shock Absorbers/Struts

Tools Required: Socket set, torque wrench, spring compressor (if replacing struts).
Use a socket set to remove the bolts securing the shock absorbers or struts.
Carefully detach the shock/strut assembly from the vehicle.
Inspect for leaks or damage and replace if necessary.
Install new shock absorbers or struts, ensuring they are properly oriented.
Torque the mounting bolts to manufacturer specifications (typically around 40-60 ft-lbs).

3. Check and Replace Sway Bar Links and Bushings

Tools Required: Wrench set, socket set.
Locate the sway bar links and bushings.
Use a wrench and socket to remove the sway bar link bolts.
Inspect the links and bushings for wear or damage; replace if necessary.
Install new sway bar links and bushings, torquing to specifications (generally 20-30 ft-lbs).

4. Inspect and Replace Control Arm Bushings

Tools Required: Socket set, pry bar, bushing removal tool.
Use a socket set to remove the control arm from the vehicle.
Inspect the bushings for any signs of cracking or wear.
If damaged, use a bushing removal tool to press out the old bushings and install new ones.
Reattach the control arm and torque bolts to specifications (typically 70-90 ft-lbs).