how to fix my Toyota Corolla E170 (2013-2019) brake pedal goes to the floor

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

critical

Severity

3 min read

579 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 diagnostic procedures and repair instructions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always allow the vehicle to cool before working on the brake system.
•Ensure the vehicle is securely lifted if working underneath.
•Avoid contact with brake fluid as it can damage paint and other surfaces.

Symptoms

•Brake pedal feels soft or spongy
•Brake fluid warning light illuminated on the dashboard
•Increased stopping distance
•Brake fluid leaking under the vehicle
•Unresponsive brakes when pressed

Diagnostic Steps

1
Check the brake fluid level in the reservoir; ensure it is at the appropriate level.
2
Inspect for visible brake fluid leaks around the brake lines, calipers, and master cylinder.
3
Use an OBD-II scanner to check for any stored error codes related to the braking system.
4
Perform a visual inspection of the brake lines for any signs of wear or damage.
5
Test the brake master cylinder for proper operation by performing a brake pedal pump test.

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

•Socket set
•Turkey baster or brake fluid siphon
•Brake bleeder kit
•OBD-II scanner

Parts Required

•Brake fluid (DOT 3 or DOT 4)
•Brake line (if damaged)
•Brake caliper or master cylinder (if defective)

Related Faults

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Diagnostic Steps

1
Check the brake fluid level in the reservoir; ensure it is at the appropriate level.
2
Inspect for visible brake fluid leaks around the brake lines, calipers, and master cylinder.
3
Use an OBD-II scanner to check for any stored error codes related to the braking system.
4
Perform a visual inspection of the brake lines for any signs of wear or damage.
5
Test the brake master cylinder for proper operation by performing a brake pedal pump test.

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a level surface and secure it with wheel chocks.
Disconnect the negative terminal of the battery to prevent any electrical issues.

2. Inspect and Replace Brake Fluid

Sub-steps:
1. Remove the brake fluid reservoir cap.
2. Use a turkey baster or brake fluid siphon to remove old fluid from the reservoir.
3. Fill the reservoir with new DOT 3 or DOT 4 brake fluid as specified in the owner's manual.

3. Inspect and Repair or Replace Components

Sub-steps:
1. If leaks are found, replace the damaged brake line or brake caliper. Use a socket set to remove the old part and install the new one.
2. If the master cylinder is defective, remove it by unscrewing the mounting bolts and disconnecting the brake lines. Replace with a new master cylinder and ensure proper torque is applied to the mounting bolts.
3. Bleed the brake system to remove any air. Start from the rear passenger side, then the rear driver side, followed by the front passenger side, and finish with the front driver side. Use a brake bleeder kit or have an assistant pump the brake pedal while you open and close the bleeder valves.

4. Reassemble and Finalize

Sub-steps:
1. Refill the brake fluid reservoir to the appropriate level.
2. Reconnect the negative battery terminal.
3. Test the brake pedal to ensure it feels firm and responsive.