how can I tell if the struts on my Toyota Highlander Third Generation (2014-2019) are worn out?

Toyota Highlander Third Generation (2014-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

544 words

Problem Statement

Learn how to diagnose and replace worn 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 use jack stands when working under a vehicle.
•Ensure the vehicle is securely lifted before removing any components.

Symptoms

•Excessive bouncing or swaying during driving
•Uneven tire wear
•Fluid leakage from the struts
•Nose diving during braking
•Increased stopping distance
•Difficulty maintaining steering control

Diagnostic Steps

1
Inspect the struts visually for any signs of physical damage or leakage.
2
Perform a bounce test by pushing down on each corner of the vehicle and observing the rebound.
3
Check tire wear patterns, particularly for uneven tread wear.
4
Test drive the vehicle to assess handling and ride comfort.
5
Measure the ride height from the ground to the fender arch to check for sagging.

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

•Hydraulic jack
•Jack stands
•Lug wrench
•Socket set
•Torque wrench
•Wrench set

Parts Required

•New strut assemblies (pair recommended)
•Sway bar links (if worn)

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Diagnostic Steps

1
Inspect the struts visually for any signs of physical damage or leakage.
2
Perform a bounce test by pushing down on each corner of the vehicle and observing the rebound.
3
Check tire wear patterns, particularly for uneven tread wear.
4
Test drive the vehicle to assess handling and ride comfort.
5
Measure the ride height from the ground to the fender arch to check for sagging.

Solution

1. Preparation

Gather tools and parts required for strut replacement.
Park the vehicle on a flat, level surface and engage the parking brake.
Wear safety glasses and gloves.

2. Lift the Vehicle

Use a hydraulic jack to lift the vehicle at the designated lift points.
Secure with jack stands for safety.

3. Remove the Wheel

Use a lug wrench to remove the wheel nuts.
Take off the wheel to access the strut assembly.

4. Remove the Strut Assembly

Disconnect the sway bar link from the strut using a socket and ratchet.
Remove the bolt securing the strut to the steering knuckle.
Detach any brake line or sensor wires attached to the strut.
Remove the top strut mounting bolts located under the hood using a socket.
Carefully remove the strut assembly from the vehicle.

5. Install New Strut

Position the new strut assembly in place and secure it with the top mounting bolts.
Reattach the sway bar link and tighten the bolts to the manufacturer’s specifications (typically 15-20 ft-lbs).
Reconnect any brake lines or sensor wires.
Secure the strut to the steering knuckle with the bolt and torque it as specified (generally 50-60 ft-lbs).

6. Reinstall the Wheel

Place the wheel back onto the hub and hand tighten the lug nuts.
Lower the vehicle from the jack stands and onto the ground.
Torque the lug nuts to the manufacturer's specifications (usually 76-80 ft-lbs).

7. Final Checks

Recheck all connections and ensure everything is secure.
Dispose of the old struts properly.