why does my Toyota Highlander Third Generation (2014-2019) make a popping noise when hitting bumps

Toyota Highlander Third Generation (2014-2019)

Error Codes

3-5 hours

Time

medium

Difficulty

medium

Severity

3 min read

594 words

Problem Statement

Learn how to diagnose and fix popping noise in Toyota Highlander 2014-2019. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Suspension

Estimated Time

3-5 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always use jack stands when working under the vehicle.
•Allow the vehicle to cool before working on suspension components.

Symptoms

•Popping noise when driving over bumps or uneven surfaces
•Possible vibration felt through the steering wheel
•Diminished ride comfort or handling
•No visible damage to the undercarriage
•Check engine light may be illuminated (if related to suspension sensors)

Diagnostic Steps

1
Inspect suspension components visually for signs of wear or damage.
2
Check for loose or broken sway bar links.
3
Test the struts/shocks for leakage or wear.
4
Verify that the control arm bushings are in good condition.
5
Examine the wheel bearings for play or noise.
6
Look for any excessive play in the steering system.

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
•Spring compressor
•Pry bar
•Jack and jack stands

Parts Required

•Sway bar links
•Struts/shocks
•Control arm bushings (if applicable)
•Wheel bearings (if applicable)

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Diagnostic Steps

1
Inspect suspension components visually for signs of wear or damage.
2
Check for loose or broken sway bar links.
3
Test the struts/shocks for leakage or wear.
4
Verify that the control arm bushings are in good condition.
5
Examine the wheel bearings for play or noise.
6
Look for any excessive play in the steering system.

Solution

1. Preparation

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

2. Inspect and Replace Sway Bar Links

Tools Required: Socket set, torque wrench
Sub-steps:
1. Lift the front of the vehicle using a jack and secure it with jack stands.
2. Locate the sway bar links on both sides of the vehicle.
3. Using a socket, remove the bolts attaching the sway bar links to the sway bar and the control arm.
4. Install new sway bar links in reverse order, tightening to manufacturer specifications (usually around 40-50 ft-lbs).

3. Check and Replace Struts/Shocks

Tools Required: Spring compressor, socket set, torque wrench
Sub-steps:
1. Remove the wheel on the side with the suspected strut issue.
2. Detach the strut from the upper mount by removing the bolts.
3. Remove the lower strut bolts connecting it to the control arm.
4. Use a spring compressor to carefully remove the coil spring from the strut.
5. Replace the strut with a new one, reassembling in reverse order and ensuring all bolts are torqued to specifications (typically 60-80 ft-lbs).

4. Inspect Control Arm Bushings

Tools Required: Socket set, pry bar
Sub-steps:
1. Visually inspect the control arm bushings for cracks or deterioration.
2. Use a pry bar to check for excessive movement in the bushings.
3. If worn, remove the control arm and replace the bushings or the entire control arm assembly, reattaching and torquing bolts to specifications.

5. Check Wheel Bearings

Tools Required: Socket set
Sub-steps:
1. Lift the vehicle and remove the wheel.
2. Grasp the wheel and check for any play or noise while rotating.
3. If play is detected, remove the wheel hub assembly and replace the wheel bearing, ensuring proper reassembly and torque.