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Why is my 2020 Toyota Highlander shaking when braking? - Toyota Highlander
Home/Cars/Toyota/Highlander/Fourth Generation (2020-present)/Why is my 2020 Toyota Highlander shaking when braking?

Why is my 2020 Toyota Highlander shaking when braking?

Toyota Highlander Fourth Generation (2020-present)

Error Codes
2-3 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
4 min read
691 words

Problem Statement

Learn how to diagnose and fix the shaking issue when braking in your 2020 Toyota Highlander with this step-by-step guide.

Affected Component
braking system, suspension components
Estimated Time
2-3 hours

Symptoms

  • •Vibration felt through the steering wheel or brake pedal when braking.
  • •Pulsation of the brake pedal.
  • •Noise while braking (squeaking, grinding).
  • •Uneven wear on brake pads or rotors.
  • •Shaking occurs at specific speeds or all speeds.

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

  • •Tire iron
  • •Jack and jack stands
  • •Dial indicator gauge
  • •Torque wrench
  • •Brake cleaner
  • •Wrench set
  • •Screwdriver set
  • •Brake pad spreader
  • •Torque specifications sheet

Additional Information

Affected Component
braking system, suspension components
Estimated Time
2-3 hours
Difficulty
medium
Severity
medium
Tools Required
9 items

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Problem Diagnosis: Shaking When Braking in 2020 Toyota Highlander

When a 2020 Toyota Highlander shakes during braking, it typically indicates issues with the braking system or suspension components. Here’s a step-by-step guide to diagnose and fix the problem.

Tools Required
  • Tire iron
  • Jack and jack stands
  • Dial indicator gauge
  • Torque wrench
  • Brake cleaner
  • Wrench set
  • Screwdriver set
  • Brake pad spreader
  • Torque specifications sheet
Repair Instructions

Step 1: Lift the Vehicle

  1. Park on a Level Surface

    • Engage the parking brake and ensure the vehicle is in "Park" (automatic) or gear (manual).

  2. Raise the Vehicle

    • Use a jack to lift the front of the Highlander and secure it with jack stands.

Step 2: Remove the Front Wheels

  1. Loosen Lug Nuts

    • Use a tire iron to loosen the lug nuts before raising the vehicle.

  2. Remove Wheels

    • Take off the lug nuts completely and remove the front wheels.

Step 3: Inspect and Measure Brake Rotors

  1. Remove Brake Caliper

    • Use a wrench to remove the caliper bolts, then carefully slide the caliper off the rotor. Support it with a hanger or bungee cord to avoid stressing the brake line.

  2. Remove Brake Rotor

    • If necessary, remove the rotor retaining screws and slide the rotor off the hub.

  3. Measure Rotor Runout

    • Use the dial indicator to check for warping. A runout of more than 0.002 inches indicates the rotor should be resurfaced or replaced.

Step 4: Inspect Brake Pads

  1. Check Pad Wear

    • Examine the thickness of the brake pads. If they are worn down to 3mm or less, replace them.

  2. Clean Brake Components

    • Use brake cleaner to clean the caliper, rotor, and pads. Check for any debris or buildup that could affect braking performance.

Step 5: Inspect Suspension and Tires

  1. Check Suspension Components

    • Inspect control arms, bushings, and ball joints for wear. Replace any damaged components.

  2. Inspect Tires

    • Rotate tires if uneven wear is found. Ensure they are balanced and inflated to specifications.

Step 6: Reassemble and Test

  1. Reinstall Brake Rotor

    • Slide the rotor back onto the hub and secure it with screws if applicable.

  2. Reinstall Brake Caliper

    • Place the caliper back over the rotor and tighten the caliper bolts to manufacturer specifications.

  3. Reattach Wheels

    • Place the wheel back on and hand-tighten the lug nuts. Lower the vehicle and then torque the lug nuts to the specified torque.

  4. Test Drive

    • Conduct a test drive to check for any remaining vibrations when braking. Ensure the brakes function smoothly without any shaking.
Conclusion

If the shaking persists after following these steps, further diagnostics may be required, such as checking the ABS system or further inspecting the steering components. If you're not comfortable performing these tasks, it may be advisable to consult a professional mechanic.