why does my Highlander make a loud noise when I go over bumps?

Toyota Highlander Third Generation (2014-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

615 words

Problem Statement

Learn how to diagnose and fix loud noise over bumps in 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 use jack stands to secure the vehicle when lifted.
•Wear safety goggles to protect your eyes from debris.

Symptoms

•Loud clunking or banging noise over bumps
•Possible rattling noises when driving on uneven surfaces
•Decreased ride comfort or handling
•Signs of excessive body roll during turns
•Potential vibrations felt through the floor or steering wheel

Diagnostic Steps

1
Inspect the suspension components visually for any signs of damage or wear.
2
Check for loose or damaged bolts on the suspension system.
3
Perform a bounce test on each corner of the vehicle to assess shock absorber function.
4
Examine the control arms and bushings for deterioration or play.
5
Inspect the sway bar links for any signs of breakage or looseness.
6
Look for any signs of damage to the undercarriage that might be causing noise.

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
•Wrench set
•Torque wrench
•Lug wrench
•Bushing tool

Parts Required

•Shock absorbers
•Sway bar links
•Control arm bushings

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Inspect the suspension components visually for any signs of damage or wear.
2
Check for loose or damaged bolts on the suspension system.
3
Perform a bounce test on each corner of the vehicle to assess shock absorber function.
4
Examine the control arms and bushings for deterioration or play.
5
Inspect the sway bar links for any signs of breakage or looseness.
6
Look for any signs of damage to the undercarriage that might be causing noise.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface, and engage the parking brake.
Use jack stands to safely lift the vehicle if necessary.

2. Inspect and Replace Shock Absorbers

Remove the wheel:
- Use a lug wrench to loosen the lug nuts and remove the wheel.
Remove the shock absorber:
- Locate the bolts securing the shock to the upper and lower mounts.
- Use a socket set to remove these bolts.
- Carefully take out the shock absorber from its mounting location.
Inspect the new shock absorber:
- Ensure the replacement shock is the correct model and in good condition.
Install the new shock absorber:
- Position the new shock in place and tighten the bolts to the manufacturer’s specified torque settings.
Reinstall the wheel:
- Place the wheel back, hand-tighten the lug nuts, and lower the vehicle to the ground.
- Torque the lug nuts to the manufacturer’s specifications.

3. Check and Replace Sway Bar Links

Locate the sway bar links:
- Identify the connection points of the sway bar links to the sway bar and control arm.
Remove the sway bar link:
- Use a wrench to hold the link steady while loosening and removing the nuts.
Install new sway bar links:
- Position the new link and tighten the nuts securely to the manufacturer’s specification.

4. Inspect and Replace Control Arm Bushings

Remove the control arm:
- Disconnect the ball joint and any bolts securing the control arm.
- Remove the control arm from the vehicle.
Replace bushings:
- Press out the old bushings and install new ones using a bushing tool or appropriate press.
Reinstall the control arm:
- Position the control arm back in place and secure it with bolts, torquing them to the specified settings.