Maintaining your 2020 Mazda3’s brake system is crucial for safety, and performing a brake fluid flush regularly can help ensure optimal braking performance. Brake fluid absorbs moisture over time, which can reduce braking efficiency and cause corrosion.

Tools and Materials Needed

  • New brake fluid (check your owner’s manual for the recommended type)
  • Brake bleeder kit or clear tubing
  • Wrench set
  • Jack and jack stands
  • Container for old fluid
  • Safety gloves and goggles

Step-by-Step Brake Fluid Flush

  1. Prepare your vehicle: Park on a level surface, engage the parking brake, and lift the car using a jack and jack stands.
  2. Locate the brake fluid reservoir: Open the hood and find the brake fluid reservoir near the firewall. Clean the cap before opening to avoid contamination.
  3. Remove old fluid: Using a turkey baster or similar tool, remove as much old fluid from the reservoir as possible.
  4. Refill with new brake fluid: Fill the reservoir with fresh brake fluid to the recommended level.
  5. Bleed the brakes: Starting with the wheel farthest from the master cylinder (usually the rear passenger side), attach the clear tubing to the bleeder valve and place the other end into the container. Have a helper pump the brake pedal several times and hold it down.
  6. Open the bleeder valve: Use the wrench to open the valve slightly to release old fluid and air. Close the valve before your helper releases the brake pedal.
  7. Repeat the process: Continue this procedure for each wheel, moving closer to the master cylinder. Keep the reservoir topped up during the process to avoid introducing air.
  8. Check and finish: Once all wheels are flushed, ensure the brake fluid is at the proper level and securely close the reservoir.

After completing the flush, test your brakes carefully before driving normally. If you notice any sponginess or issues, it’s advisable to consult a professional mechanic. Regular brake fluid maintenance helps keep your Mazda3’s braking system responsive and safe.