how can I tell if my Toyota Highlander XU70 (2020-Present) struts are bad

Toyota Highlander XU70 (2020-Present)

Error Codes

3-5 hours

Time

medium

Difficulty

medium

Severity

3 min read

570 words

Problem Statement

Learn how to diagnose and fix bad struts on your Toyota Highlander XU70 (2020-Present). Step-by-step guide with symptoms, diagnostic steps, 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 to prevent collapse.
•Compress springs carefully to avoid injury from sudden release of tension.

Symptoms

•Excessive bouncing after hitting bumps or potholes
•Nose diving during braking
•Uneven tire wear
•Fluid leakage around strut assembly
•A clunking or knocking noise over bumps
•Vehicle leaning to one side during turns

Diagnostic Steps

1
Perform a visual inspection of the struts for any signs of oil leakage or damage.
2
Push down on each corner of the vehicle to test for excessive bounce; observe how quickly the vehicle returns to its normal position.
3
Check tire wear patterns for uneven wear, which can indicate strut problems.
4
Inspect the mounting points and bushings for any signs of wear or damage.
5
Drive the vehicle over a bumpy road and listen for any unusual noises coming from the suspension.

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
•Socket set
•Torque wrench
•Strut spring compressor
•Safety glasses

Parts Required

•Replacement struts
•Strut mounts and bump stops (if necessary)

Related Faults

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Diagnostic Steps

1
Perform a visual inspection of the struts for any signs of oil leakage or damage.
2
Push down on each corner of the vehicle to test for excessive bounce; observe how quickly the vehicle returns to its normal position.
3
Check tire wear patterns for uneven wear, which can indicate strut problems.
4
Inspect the mounting points and bushings for any signs of wear or damage.
5
Drive the vehicle over a bumpy road and listen for any unusual noises coming from the suspension.

Solution

1. Preparation

Tools Required: Jack, jack stands, socket set, torque wrench, strut spring compressor, and safety glasses.
Park the vehicle on a level surface and ensure the engine is off.
Engage the parking brake and allow the vehicle to cool.

2. Lift the Vehicle

Use the jack to lift the front or rear of the vehicle depending on which struts are being replaced.
Secure the vehicle with jack stands to ensure stability.

3. Remove the Wheel

Use the socket set to remove the lug nuts and take off the wheel to access the strut assembly.

4. Remove the Strut Assembly

Disconnect any brake lines or sensors attached to the strut.
Remove the bolts securing the strut to the knuckle and the upper mounting points (refer to vehicle service manual for torque specifications).
Carefully pull the strut assembly out from the vehicle.

5. Replace or Rebuild the Strut

If replacing, install the new strut into position.
If rebuilding, use a strut spring compressor to safely compress the spring and remove the strut from the top mount.
Replace any worn components such as strut mounts or bump stops.

6. Reinstall the Strut Assembly

Reinsert the strut into the vehicle and secure it with the appropriate bolts.
Reattach brake lines or sensors and ensure all connections are secure.

7. Reattach the Wheel

Place the wheel back on the hub and hand-tighten the lug nuts.
Lower the vehicle and torque the lug nuts to the manufacturer’s specifications.