The Toyota Corolla 2021 model may experience parking brake malfunctions, which can be concerning for owners. This issue typically manifests as a "Parking Brake Malfunction" warning message on the Multi-information Display (MID) and may be accompanied by the Diagnostic Trouble Code (DTC) C059746.

Common Causes

Several factors can contribute to parking brake malfunctions in the 2021 Toyota Corolla:

  • Faulty parking brake actuator: The actuators located behind the rear brake calipers can fail or have broken gears, leading to parking brake issues.
  • Weak battery: Insufficient voltage can prevent proper operation of the parking brake actuator or module.
  • Software glitches: The electronic parking brake system is controlled by software, which can sometimes malfunction.
  • Worn brake components: Damaged cables, calipers, or brake pads can affect the parking brake's performance.
  • Lack of maintenance: Regular servicing is crucial for the proper functioning of the parking brake system.

Troubleshooting Steps

If you encounter a parking brake malfunction in your 2021 Toyota Corolla, try these steps:

1. Reset the parking brake system:

- Start the car with the transmission in "Park"

- Press and hold the parking brake switch to engage the brakes

- Turn off the car and wait 5 seconds

- Restart the engine

- Press and hold the brake pedal

- Press the parking brake switch to release the brakes

- Check if the warning light has turned off

2. Check the battery: Ensure your car's battery is fully charged and functioning correctly.

3. Inspect brake components: Look for visible wear or damage to brake cables, calipers, and pads.

4. Use diagnostic tools: A YOUCANIC full system scanner can help read codes from the parking brake control module.

Professional Repair

If the issue persists after attempting these steps, it's best to seek professional help:

  • Visit a Toyota dealer: They can perform necessary software updates or component replacements.
  • Mention TSB-0168-19: This Technical Service Bulletin relates to the Skid Control Computer software update for certain Toyota models.
  • Check for recalls: Visit Toyota.com/recall or nhtsa.gov/recalls to see if your vehicle is involved in any safety recalls related to the parking brake system.

Preventive Measures

To avoid future parking brake malfunctions:

  • Use regularly: Engage and disengage the parking brake often to keep components active.
  • Maintain your vehicle: Follow Toyota's recommended maintenance schedule.
  • Address issues promptly: Don't ignore warning lights or unusual brake behavior.

Remember, driving with a malfunctioning parking brake can be dangerous. Always prioritize safety and seek professional help when needed.

FAQs About Parking Brake Malfunction Toyota Corolla 2021

    • Can I drive my Corolla with a parking brake malfunction?
      It's not recommended. The malfunction could compromise your safety, especially when parking on inclines.
    • How often should I service my Corolla's parking brake system?
      Follow Toyota's maintenance schedule, typically every 30,000 miles or 2 years, whichever comes first.
    • Will a parking brake malfunction affect my regular brakes?
      Generally no, but it's best to have the entire brake system checked to ensure overall safety.