how can I tell if my Toyota Highlander needs new struts

Toyota Highlander Third Generation (2014-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

552 words

Problem Statement

Learn how to diagnose and replace struts on your 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 on a stable, flat surface when lifting

Symptoms

•Vehicle exhibits excessive bouncing over bumps
•Noticeable swaying or instability during turns
•Uneven tire wear observed on the tires
•Front-end dives when braking
•Loud clunking or knocking noises from the suspension
•Vehicle sits lower than normal or has a 'sunk' appearance

Diagnostic Steps

1
Inspect the struts visually for any signs of oil leakage or physical damage
2
Perform a bounce test by pushing down on each corner of the vehicle and observing how many times it bounces back
3
Check for uneven tire wear patterns which could indicate suspension problems
4
Inspect the mounts and bushings for wear or damage
5
Take the vehicle for a test drive on various road surfaces to assess handling and comfort

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

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

Parts Required

•New struts (front and/or rear as needed)
•Strut mounts (if worn)

Related Faults

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Diagnostic Steps

1
Inspect the struts visually for any signs of oil leakage or physical damage
2
Perform a bounce test by pushing down on each corner of the vehicle and observing how many times it bounces back
3
Check for uneven tire wear patterns which could indicate suspension problems
4
Inspect the mounts and bushings for wear or damage
5
Take the vehicle for a test drive on various road surfaces to assess handling and comfort

Solution

1. Preparation

Gather necessary tools and replacement parts.
Park the vehicle on a level surface and engage the parking brake.
Use wheel chocks to secure the vehicle.

2. Lift the Vehicle

Use a floor jack to lift the front or rear of the vehicle as needed.
Secure it with jack stands to ensure safety.

3. Remove the Struts

Front Strut Removal:
1. Remove the wheel using a lug wrench.
2. Disconnect the brake line bracket and any ABS sensor wiring from the strut.
3. Remove the bolts securing the strut to the steering knuckle.
4. Remove the top strut mount bolts from the engine bay.
Rear Strut Removal:
1. Remove the rear wheel using a lug wrench.
2. Unbolt the lower strut mount from the trailing arm.
3. Remove the upper strut mount bolts from the interior or trunk area.

4. Install New Struts

Front Strut Installation:
1. Position the new strut in place and secure the top mount bolts.
2. Reattach the strut to the steering knuckle and tighten the bolts to manufacturer specifications (typically around 50-60 ft-lbs).
3. Reconnect the brake line and ABS wiring.
Rear Strut Installation:
1. Position the new strut in the lower trailing arm and secure the lower mount.
2. Install the upper strut mount bolts and tighten to manufacturer specifications.

5. Reassemble and Lower the Vehicle

Reinstall the wheels and hand-tighten the lug nuts.
Lower the vehicle from the jack stands.
Torque the lug nuts to the manufacturer's specifications (usually about 80-100 ft-lbs).