how to tell if struts are bad on Toyota Highlander Third Generation (2014-2019)

Toyota Highlander Third Generation (2014-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

569 words

Problem Statement

Learn how to diagnose and fix bad struts on a 2014-2019 Toyota Highlander. Step-by-step guide with symptoms, diagnostic steps, 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 it.
•Use caution when working with compressed springs to avoid injury.

Symptoms

•Excessive bouncing or swaying during driving
•Uneven tire wear
•Difficulty maintaining control on uneven surfaces
•Noise from the suspension (clunking or knocking sounds)
•Vehicle feels stiff or harsh over bumps
•Increased stopping distance

Diagnostic Steps

1
Inspect for visual signs of damage or leakage around the struts.
2
Perform a bounce test by pushing down on the front or rear corners of the vehicle and observing how many times it bounces before settling.
3
Check for uneven tire wear patterns that may indicate suspension issues.
4
Test drive the vehicle over bumps and listen for any unusual noises from the strut assembly.
5
Examine the vehicle's ride height to ensure it is even on both sides.
6
Inspect the strut mounts for wear or 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

•Jack and jack stands
•Lug wrench
•Socket set
•Torque wrench
•Strut spring compressor

Parts Required

•New struts (front/rear as needed)
•Strut mounts (if required)

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Diagnostic Steps

1
Inspect for visual signs of damage or leakage around the struts.
2
Perform a bounce test by pushing down on the front or rear corners of the vehicle and observing how many times it bounces before settling.
3
Check for uneven tire wear patterns that may indicate suspension issues.
4
Test drive the vehicle over bumps and listen for any unusual noises from the strut assembly.
5
Examine the vehicle's ride height to ensure it is even on both sides.
6
Inspect the strut mounts for wear or damage.

Solution

1. Preparation

Tools Required:
- Jack and jack stands
- Lug wrench
- Socket set
- Torque wrench
- Strut spring compressor (if replacing struts)
Park the vehicle on a level surface and ensure it is in 'Park' or gear.
Disconnect the battery to avoid any electrical issues.

2. Lift Vehicle

Use the jack to lift the vehicle and secure it with jack stands.
Remove the wheel using the lug wrench.

3. Remove Strut

Remove the bolts securing the strut at the bottom (typically two or three bolts).
Locate the strut assembly at the top of the wheel well; remove the nuts securing it to the strut tower.
Carefully maneuver the strut out of its position; note how it is arranged to ensure proper installation of the new strut.

4. Inspect and Replace Components

Inspect the strut for signs of wear such as oil leakage or physical damage.
If necessary, use a strut spring compressor to safely compress the spring and remove it from the strut assembly.
Replace worn struts with new ones, ensuring that any rubber bushings or mounts are also replaced if damaged.

5. Reassemble

Reattach the strut into its position, securing it first at the top and then at the bottom.
Torque all bolts to the manufacturer's specifications (check the service manual for specific torque values).
Reinstall the wheel and lower the vehicle back to the ground.

6. Final Check

Reconnect the battery.
Ensure all tools are removed from the work area.