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

What are the common problems with the electronic parking brake in the 2020 Highlander?

Toyota Highlander Fourth Generation (2020-present)

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

Problem Statement

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

Affected Component
Electronic Parking Brake (EPB)

Symptoms

  • •Warning lights on the dashboard indicating a fault in the parking brake system
  • •Inability to engage or disengage the parking brake manually or automatically
  • •Electronic parking brake warning light remains illuminated
  • •Grinding, squeaking, or clicking noises when the parking brake is applied or released
  • •Electronic parking brake works intermittently

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

  • •OBD-II scanner
  • •Multimeter
  • •Basic hand tools (screwdrivers, wrenches)
  • •Torque wrench
  • •Vehicle repair manual

Additional Information

Affected Component
Electronic Parking Brake (EPB)
Difficulty
medium
Severity
medium
Tools Required
5 items

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Common Problems with the Electronic Parking Brake in the 2020 Toyota Highlander

The 2020 Toyota Highlander, equipped with an electronic parking brake (EPB), can experience several issues. Here’s a detailed breakdown of common problems, their symptoms, diagnostic steps, tools required for diagnosis, and potential repair instructions.

Common Problems and Symptoms

  1. EPB Not Engaging or Disengaging

    • Symptoms: Warning lights on the dashboard indicating a fault in the parking brake system, inability to engage or disengage the parking brake manually or automatically.
    • Possible Causes: Faulty EPB switch, malfunctioning actuator, electrical issues, or low brake fluid levels.

  2. EPB Warning Light Illuminated

    • Symptoms: The electronic parking brake warning light remains illuminated on the dashboard even when the parking brake is not engaged.
    • Possible Causes: Faulty sensors, wiring issues, or the need for a system reset.

  3. Unusual Noises During Operation

    • Symptoms: Grinding, squeaking, or clicking noises when the parking brake is applied or released.
    • Possible Causes: Worn brake pads, incorrect installation, or debris in the brake assembly.

  4. EPB System Intermittently Fails

    • Symptoms: The electronic parking brake works intermittently, sometimes engaging or disengaging without input.
    • Possible Causes: Electrical connection issues, software glitches, or sensor malfunctions.
Tools Required
  • OBD-II scanner
  • Multimeter
  • Basic hand tools (screwdrivers, wrenches)
  • Torque wrench
  • Vehicle repair manual (for specific torque specs and procedures)
Repair Instructions

1. Replacing the EPB Switch

  1. Disconnect Battery

    • Disconnect the negative terminal of the battery to avoid electrical shock.

  2. Remove Center Console

    • Use a screwdriver to remove screws securing the center console and carefully lift it to access the EPB switch.

  3. Replace the Switch

    • Disconnect the wiring harness from the old switch and install the new switch.
    • Reconnect the wiring harness and reassemble the center console.

  4. Reconnect Battery

    • Reconnect the negative terminal of the battery and test the new switch.

2. Replacing the EPB Actuator

  1. Disconnect Battery

    • Disconnect the negative terminal of the battery.

  2. Access the Actuator

    • Depending on the vehicle configuration, you may need to remove the rear brake assembly.
    • Remove the wheel and brake caliper to gain access to the actuator.

  3. Remove and Replace Actuator

    • Disconnect the actuator’s electrical connector.
    • Remove bolts securing the actuator and replace it with a new unit.

  4. Reassemble Components

    • Reinstall the brake assembly and wheel, ensuring all bolts are torqued to specifications.

  5. Reconnect Battery

    • Reconnect the negative terminal of the battery.

  6. Perform EPB Calibration

    • Use the OBD-II scanner to reset any error codes and calibrate the EPB system.
Conclusion

The electronic parking brake system in the 2020 Toyota Highlander can present various issues, ranging from engagement problems to warning lights. Through careful diagnostics and the use of appropriate tools, technicians can identify and resolve these issues efficiently. Always refer to the vehicle's repair manual for specific procedures and torque specifications.