how to fix the brake pedal going to the floor in Toyota Corolla E170 (2013-2019)

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

critical

Severity

3 min read

592 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix the brake pedal going to the floor in a Toyota Corolla E170 (2013-2019). Step-by-step guide with tools and procedures.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always allow the vehicle to cool before starting repairs.
•Disconnect the battery if working with electrical components.

Symptoms

•Brake pedal feels spongy or goes to the floor without resistance
•Brake warning light illuminated on the dashboard
•Uneven braking or loss of braking power
•Fluid leak observed near the wheels or under the vehicle
•Low brake fluid level in the master cylinder reservoir

Diagnostic Steps

1
Check the brake fluid level in the master cylinder reservoir.
2
Inspect brake lines and hoses for any visible leaks or damage.
3
Examine brake calipers and wheel cylinders for signs of leaking brake fluid.
4
Test the master cylinder for internal failure by performing a pedal test.
5
Use an OBD-II scanner to check for any related warning codes.

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

•Wrench set
•Brake line flaring tool
•Brake fluid
•Socket set
•Brake cleaner
•Brake bleeder kit
•Jack and jack stands
•Hose

Parts Required

•Brake fluid
•Brake lines (if damaged)
•Brake calipers (if leaking)
•Wheel cylinders (if leaking)

Related Faults

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Diagnostic Steps

1
Check the brake fluid level in the master cylinder reservoir.
2
Inspect brake lines and hoses for any visible leaks or damage.
3
Examine brake calipers and wheel cylinders for signs of leaking brake fluid.
4
Test the master cylinder for internal failure by performing a pedal test.
5
Use an OBD-II scanner to check for any related warning codes.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Park the vehicle on a level surface and engage the parking brake.
Gather protective gear (gloves, safety goggles).

2. Inspect and Repair Brake Lines

Tools Required: Wrench set, brake line flaring tool, brake fluid.
Instructions:
1. Raise the vehicle using a jack and secure it with jack stands.
2. Visually inspect the brake lines for corrosion, cracks, or leaks.
3. Tighten any loose fittings with the appropriate wrench.
4. If a leak is found, replace the damaged section of the brake line using a flaring tool to create new ends.

3. Replace Brake Calipers or Wheel Cylinders (if necessary)

Tools Required: Socket set, brake cleaner, new brake calipers or wheel cylinders, brake fluid.
Instructions:
1. Remove the wheel to access the brake components.
2. Disconnect the brake line from the caliper or cylinder.
3. Unbolt the caliper or cylinder from its mounting bracket.
4. Install the new caliper or cylinder, ensuring to torque the bolts to manufacturer specifications.
5. Reconnect the brake line and bleed the system.

4. Test and Bleed the Brake System

Tools Required: Brake bleeder kit, hose, container.
Instructions:
1. Begin bleeding the brakes at the wheel furthest from the master cylinder (usually the right rear).
2. Attach the hose to the bleeder valve and place the other end in a container.
3. Open the bleeder valve and have an assistant press the brake pedal slowly.
4. Close the valve before releasing the brake pedal. Repeat until no air bubbles are present.
5. Repeat the process for the remaining wheels in order (right rear, left rear, right front, left front).