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What are the common problems with the electric parking brake in a 2020 Toyota Highlander? - Toyota Highlander
Home/Cars/Toyota/Highlander/Fourth Generation (2020-present)/What are the common problems with the electric parking brake in a 2020 Toyota Highlander?

What are the common problems with the electric parking brake in a 2020 Toyota Highlander?

Toyota Highlander Fourth Generation (2020-present)

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

Problem Statement

Explore common issues with the electric parking brake in the 2020 Toyota Highlander, including symptoms, diagnostic steps, and repair instructions.

Affected Component
Electric Parking Brake (EPB)

Symptoms

  • •EPB Warning Light Illuminated
  • •Parking Brake Not Engaging or Disengaging
  • •Unusual Noises During Operation
  • •Intermittent Faults
  • •Error Codes in the ECU

Diagnostic Steps

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  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

  • •OBD-II Scanner
  • •Multimeter
  • •Torque wrench
  • •Basic hand tools (screwdrivers, ratchet set, etc.)
  • •Brake cleaner
  • •Diagnostic software (if required)

Additional Information

Affected Component
Electric Parking Brake (EPB)
Difficulty
medium
Severity
medium
Tools Required
6 items

Related Faults

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Common Problems with the Electric Parking Brake in a 2020 Toyota Highlander

The electric parking brake (EPB) system in the 2020 Toyota Highlander can exhibit various issues. Here are some common problems, along with their symptoms, diagnostic steps, tools required, and repair instructions.

Common Problems and Symptoms

  1. EPB Warning Light Illuminated

    • Symptoms: The dashboard warning light for the electric parking brake is illuminated.

  2. Parking Brake Not Engaging or Disengaging

    • Symptoms: The parking brake fails to engage when activated or does not release when the vehicle is in gear.

  3. Unusual Noises During Operation

    • Symptoms: Grinding, clicking, or whining noises when the parking brake is applied or released.

  4. Intermittent Faults

    • Symptoms: The parking brake works sporadically, sometimes engaging or disengaging without input.

  5. Error Codes in the ECU

    • Symptoms: Diagnostic trouble codes (DTCs) related to the EPB system can be found using an OBD-II scanner.
Tools Required
  • OBD-II Scanner
  • Multimeter
  • Torque wrench
  • Basic hand tools (screwdrivers, ratchet set, etc.)
  • Brake cleaner
  • Diagnostic software (if required)
Repair Instructions

1. EPB Warning Light Illuminated

  • Step 1: Retrieve and document DTCs using an OBD-II scanner.
  • Step 2: Clear the codes and test the system to see if it returns.
  • Step 3: If the light remains on, further investigate the specific fault codes.

2. Parking Brake Not Engaging or Disengaging

  • Step 1: Inspect the EPB switch for proper operation.
  • Step 2: Check wiring and connections to the EPB module.
  • Step 3: If the switch is faulty, replace it by removing the center console trim.
  • Step 4: If the actuator is faulty, access the actuator located at the rear brake assembly and replace it.

3. Unusual Noises During Operation

  • Step 1: Inspect the brake components (pads and rotors).
  • Step 2: If noise is coming from the actuator, consider lubricating or replacing it.
  • Step 3: If grinding persists, check that brake components are properly installed and torqued.

4. Intermittent Faults

  • Step 1: Check all wiring for damage or short circuits.
  • Step 2: Clean all electrical connectors and ensure a tight connection.
  • Step 3: Conduct a continuity test on the wiring leading to the actuator.

5. Error Codes in the ECU

  • Step 1: Note the specific error codes and refer to the vehicle service manual for diagnosis.
  • Step 2: Follow the troubleshooting steps outlined for the specific DTCs found.
  • Step 3: Repair or replace any affected components as needed.
Conclusion

If you are not comfortable performing these diagnostic and repair steps yourself, it is advisable to consult a professional automotive technician or take your vehicle to a certified Toyota service center. These steps provide a foundation for troubleshooting common issues with the electric parking brake in a 2020 Toyota Highlander, ensuring safety and functionality.