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

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

critical

Severity

3 min read

571 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 2013-2019 Toyota Corolla E170. Step-by-step guide with symptoms and solutions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on the brake system
•Allow the brake components to cool before inspection or repair

Symptoms

•Brake pedal sinks to the floor with minimal pressure
•Warning light illuminated on the dashboard (brake warning light)
•Reduced braking power or spongy brake feel
•Fluid leakage observed near the brake components
•Increased stopping distance

Diagnostic Steps

1
Inspect the brake fluid reservoir for low fluid levels
2
Check the brake lines and hoses for visible leaks or damage
3
Examine the brake calipers and wheel cylinders for signs of fluid leakage
4
Use a brake bleed kit to check for air in the brake lines
5
Inspect the brake master cylinder for internal leaks or failure

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
•Socket set
•Brake bleed kit
•Safety goggles

Parts Required

•Brake fluid (DOT 3 or DOT 4)
•Brake lines (if damaged)
•Brake calipers or wheel cylinders (if leaking)
•Master cylinder (if faulty)

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Diagnostic Steps

1
Inspect the brake fluid reservoir for low fluid levels
2
Check the brake lines and hoses for visible leaks or damage
3
Examine the brake calipers and wheel cylinders for signs of fluid leakage
4
Use a brake bleed kit to check for air in the brake lines
5
Inspect the brake master cylinder for internal leaks or failure

Solution

1. Preparation

Gather tools and parts: OBD-II scanner, socket set, brake fluid, brake bleed kit, and safety goggles.
Park the vehicle on a level surface and engage the parking brake.
Disconnect the battery for safety.

2. Inspect and Repair Leaks

a. Check Brake Lines:
- Visually inspect all brake lines and fittings for signs of fluid leakage or corrosion.
- Replace any damaged lines or fittings.
b. Inspect Calipers and Wheel Cylinders:
- Remove the wheel to access the brake calipers and wheel cylinders.
- Look for fluid leaks; if found, replace the affected caliper or wheel cylinder.

3. Refill and Bleed Brake System

a. Refill Brake Fluid:
- Open the brake fluid reservoir cap and refill it with the manufacturer-recommended brake fluid (DOT 3 or DOT 4).
b. Bleed the Brakes:
- Use a brake bleed kit to bleed each brake line:
  - Start with the brake furthest from the master cylinder (usually the right rear wheel).
  - Attach the bleed hose to the bleeder valve on the caliper.
  - Have an assistant pump the brake pedal several times and hold it down.
  - Open the bleeder valve to release air and fluid, then close it before the assistant releases the brake pedal.
  - Repeat for all wheels in the correct order (right rear, left rear, right front, left front).

4. Inspect and Replace Master Cylinder (if necessary)

If the brake pedal still goes to the floor after bleeding, check the master cylinder:
- Remove the master cylinder from the brake booster.
- Inspect for internal leaks; if found, replace the master cylinder and bleed the system again.