how to know if my Toyota Highlander struts are worn out or leaking?

Toyota Highlander Fourth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

531 words

Problem Statement

Learn how to identify worn or leaking struts on your Toyota Highlander. Step-by-step diagnostic and repair instructions for better vehicle handling.

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.
•Wear safety glasses to protect eyes from debris when working.

Symptoms

•Vehicle exhibits excessive bouncing after hitting bumps
•Noticeable body roll during turns
•Uneven tire wear
•Oil or fluid leakage around the strut assembly
•Clunking or knocking noises when going over bumps
•Difficulty in maintaining control during braking

Diagnostic Steps

1
Inspect visually for any signs of fluid leakage around the strut assembly.
2
Perform a bounce test by pushing down on the front or rear of the vehicle and observing how many times it rebounds.
3
Check for uneven tire wear patterns that could indicate suspension issues.
4
Listen for any unusual noises while driving over bumps or during turns.
5
Use a flashlight to inspect the strut boots for cracks or damage.
6
Check the strut mount for any signs of wear or looseness.

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
•Jack stands
•Lug wrench
•Socket set
•Torque wrench

Parts Required

•Replacement struts (front and/or rear)
•New strut mounts (if necessary)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Inspect visually for any signs of fluid leakage around the strut assembly.
2
Perform a bounce test by pushing down on the front or rear of the vehicle and observing how many times it rebounds.
3
Check for uneven tire wear patterns that could indicate suspension issues.
4
Listen for any unusual noises while driving over bumps or during turns.
5
Use a flashlight to inspect the strut boots for cracks or damage.
6
Check the strut mount for any signs of wear or looseness.

Solution

1. Preparation

Gather tools and parts needed for replacement.
Park the vehicle on a level surface and engage the parking brake.
Place wheel chocks behind the rear wheels for safety.

2. Lift the Vehicle

Using a jack, lift the front or rear of the Highlander depending on which struts are being inspected.
Secure the vehicle with jack stands to ensure stability.

3. Remove the Wheel

Loosen the lug nuts with a lug wrench and remove them.
Take off the wheel to expose the strut assembly.

4. Inspect and Remove Struts

Check for any visible damage to the struts and surrounding components.
If replacement is needed, locate the upper strut mount under the hood or inside the vehicle, remove the fasteners using a socket set.
Remove the lower strut bolts at the knuckle using the appropriate socket size.
Carefully pull the strut out of its mount.

5. Install New Struts

Position the new strut into the strut mount and align it with the lower knuckle.
Insert and tighten the lower strut bolts to the manufacturer’s specified torque.
Reattach the upper strut mount, ensuring all fasteners are securely tightened.

6. Reassemble and Lower Vehicle

Reinstall the wheel and hand-tighten the lug nuts.
Lower the vehicle from the jack stands and remove the jack.
Finally, torque the lug nuts to the specified value.