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What are the common issues with the rear suspension in the 2021 Toyota Highlander? - Toyota Highlander
Home/Cars/Toyota/Highlander/Fourth Generation (2020-present)/What are the common issues with the rear suspension in the 2021 Toyota Highlander?

What are the common issues with the rear suspension in the 2021 Toyota Highlander?

Toyota Highlander Fourth Generation (2020-present)

Error Codes
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
4 min read
684 words

Problem Statement

Discover common issues with the rear suspension of the 2021 Toyota Highlander, including symptoms, diagnostic steps, tools required, and repair instructions.

Affected Component
rear suspension

Symptoms

  • •Unusual Noises
  • •Poor Ride Quality
  • •Uneven Tire Wear
  • •Vehicle Leaning
  • •Warning Lights

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

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
  • •Socket Set and Wrenches
  • •Torque Wrench
  • •Pry Bar
  • •Diagnostic Scan Tool (OBD-II Scanner)
  • •Tire Pressure Gauge
  • •Inspection Mirror
  • •Flashlight

Additional Information

Affected Component
rear suspension
Difficulty
medium
Severity
medium
Tools Required
9 items

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Back to Generation
Common Issues with the Rear Suspension in the 2021 Toyota Highlander

The rear suspension of the 2021 Toyota Highlander, part of the fourth generation (XU70), can experience several common issues. While the vehicle is generally reliable, certain symptoms may indicate potential problems. Below are the symptoms, diagnostic steps, tools required, and repair instructions for the common rear suspension issues.

Common Symptoms

  1. Unusual Noises

    • Clunking or rattling sounds from the rear when driving over bumps.

  2. Poor Ride Quality

    • Excessive bouncing or harshness over bumps, leading to a less comfortable ride.

  3. Uneven Tire Wear

    • Tires showing uneven wear patterns, especially on the inside or outside edges.

  4. Vehicle Leaning

    • The rear of the vehicle may lean to one side, indicating a potential issue with the suspension components.

  5. Warning Lights

    • Dashboard warning lights related to the stability control system may appear.
Tools Required
  • Hydraulic Jack
  • Jack Stands
  • Socket Set and Wrenches
  • Torque Wrench
  • Pry Bar
  • Diagnostic Scan Tool (OBD-II Scanner)
  • Tire Pressure Gauge
  • Inspection Mirror
  • Flashlight
Repair Instructions

1. Worn Shock Absorbers/Struts

Symptoms: Excessive bouncing, clunking noises.

Repair Steps:

  • Remove the Wheel:

    1. Loosen the lug nuts and remove the rear wheel.

  • Remove the Shock Absorber:

    1. Locate the top and bottom mounting bolts of the shock absorber.
    2. Use the socket set to remove the top bolt first, followed by the bottom bolt.

  • Install New Shock Absorber:

    1. Position the new shock absorber in place.
    2. Tighten the bottom bolt, then the top bolt to the manufacturer’s specifications (consult the repair manual for torque values).

  • Reinstall the Wheel:

    1. Place the wheel back on and hand-tighten the lug nuts.
    2. Lower the vehicle and torque the lug nuts to the specified value.

2. Broken or Worn Springs

Symptoms: Vehicle leaning, rough ride.

Repair Steps:

  • Remove Wheel (same as above).

  • Inspect Springs:

    1. Check for cracks or breaks in the coil springs.

  • Remove the Spring:

    1. Use a spring compressor to safely compress the spring.
    2. Remove the top and bottom mounts (similar to shocks) to free the spring.

  • Install New Spring:

    1. Place the new spring in position and reassemble the mounts.
    2. Carefully release the spring compressor.

  • Reinstall Wheel (same as above).

3. Control Arm Replacement

Symptoms: Clunking noises, uneven tire wear.

Repair Steps:

  • Remove Wheel (same as above).

  • Remove Control Arm:

    1. Locate the bolts connecting the control arm to the chassis and to the rear axle.
    2. Use a socket set to remove these bolts.
    3. Disconnect any associated components (like sway bar links) if necessary.

  • Install New Control Arm:

    1. Position the new control arm and secure it with the bolts.
    2. Torque the bolts to the specified values.

  • Reinstall Wheel (same as above).

Conclusion

Regular inspection and maintenance of the rear suspension components of the 2021 Toyota Highlander can prevent further issues and ensure a smooth ride. If any of the symptoms are present, follow the diagnostic steps outlined to determine the issue and proceed with the recommended repairs. If unsure, always consult a professional technician for assistance.