my Toyota Highlander Third Generation (2014-2019) has leaking struts, what should I do?

Toyota Highlander Third Generation (2014-2019)

Error Codes

4-8 hours

Time

hard

Difficulty

high

Severity

3 min read

552 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix leaking struts on your 2014-2019 Toyota Highlander. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Suspension

Estimated Time

4-8 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always use jack stands when working under a vehicle.
•Allow the strut assembly to cool before handling if the vehicle has been driven recently.

Symptoms

•Decreased ride comfort and stability
•Excessive bouncing after hitting bumps
•Noticeable fluid on the strut assembly
•Increased stopping distance
•Uneven tire wear

Diagnostic Steps

1
Inspect the struts for signs of oil leakage and physical damage.
2
Check the vehicle's alignment to see if it has been affected by the strut condition.
3
Test the strut compression by pushing down on the vehicle and observing how quickly it rebounds.
4
Verify fluid levels in the strut assembly (if applicable).
5
Examine other suspension components for wear or damage that may be related.

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
•Jack and jack stands
•Strut spring compressor

Parts Required

•New strut assemblies (front and/or rear as needed)
•Sway bar links (if damaged)

Related Faults

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Diagnostic Steps

1
Inspect the struts for signs of oil leakage and physical damage.
2
Check the vehicle's alignment to see if it has been affected by the strut condition.
3
Test the strut compression by pushing down on the vehicle and observing how quickly it rebounds.
4
Verify fluid levels in the strut assembly (if applicable).
5
Examine other suspension components for wear or damage that may be related.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Safety gear: gloves and safety goggles.
Tools Required: Socket set, torque wrench, jack and jack stands, strut spring compressor.

2. Raise the Vehicle

Park the Highlander on a level surface.
Use a jack to lift the vehicle and secure it with jack stands.
Remove the wheels for better access to the struts.

3. Remove Struts

3.1. Disconnect sway bar links: Use a socket to remove the nuts securing the sway bar links to the struts.
3.2. Remove bolts: Unbolt the strut from the lower control arm and the upper mount (usually located under the hood).
3.3. Remove struts: Carefully pull the struts out from the vehicle, ensuring no other components are obstructed.

4. Replace Struts

4.1. Compress springs: Use a strut spring compressor to safely compress the coil spring on the old strut.
4.2. Remove old strut assembly: Unscrew the top mount and remove the strut from the spring.
4.3. Install new strut: Place the new strut into the spring and secure it with the top mount.
4.4. Release spring tension: Carefully release the tension on the spring compressor.

5. Reinstall Struts

5.1. Position struts: Insert the new struts back into the mounting locations on the vehicle.
5.2. Tighten bolts: Use a torque wrench to tighten the upper and lower strut bolts to manufacturer specifications (typically around 50-70 ft-lbs, check the vehicle manual).
5.3. Reconnect sway bar links: Reinstall the sway bar links and tighten the nuts.

6. Final Checks

Replace the wheels and lower the vehicle.
Ensure all tools are removed from the work area.