my Toyota Corolla E170 (2013-2019) rear brakes are grinding how do I fix it

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

605 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 grinding brakes on your 2013-2019 Toyota Corolla E170. Step-by-step guide with tools, parts, and safety tips.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always disconnect the battery when working on brake components to prevent accidental engagement.
•Allow the brakes to cool before working on them after driving.

Symptoms

•Grinding noise when braking
•Reduced braking performance
•Vibration felt in the brake pedal
•Warning light on the dashboard (if applicable)
•Increased stopping distance

Diagnostic Steps

1
Inspect the rear brake pads for wear; measure thickness and look for uneven wear.
2
Check the rear brake rotors for scoring, warping, or rust.
3
Examine the calipers for proper operation and any signs of leakage or sticking.
4
Inspect the brake hardware (clips, shims) for damage or corrosion.
5
Test the brake fluid level and condition; look for contamination.
6
Use a stethoscope or mechanic's stethoscope to pinpoint the source of the grinding noise.

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

•Jack and jack stands
•Lug wrench
•Socket set
•Torque wrench
•Brake cleaner
•Bungee cord or rope

Parts Required

•Rear brake pads
•Rear brake rotors (if necessary)
•Brake caliper grease

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Diagnostic Steps

1
Inspect the rear brake pads for wear; measure thickness and look for uneven wear.
2
Check the rear brake rotors for scoring, warping, or rust.
3
Examine the calipers for proper operation and any signs of leakage or sticking.
4
Inspect the brake hardware (clips, shims) for damage or corrosion.
5
Test the brake fluid level and condition; look for contamination.
6
Use a stethoscope or mechanic's stethoscope to pinpoint the source of the grinding noise.

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a level surface and the parking brake is engaged.
Wear safety glasses and gloves.

2. Raise the Vehicle

Use a jack to lift the rear of the vehicle.
Secure it with jack stands to ensure safety.

3. Remove Rear Wheels

Use a lug wrench to loosen and remove lug nuts.
Take off the rear wheels to access the brake assembly.

4. Remove Brake Calipers

Use a socket set to remove the caliper mounting bolts.
Carefully slide the caliper off the rotor; support it with a bungee cord to avoid stress on the brake line.

5. Inspect and Replace Brake Pads

Remove the old brake pads from the caliper bracket.
Inspect the brake pad backing for any damage or uneven wear.
Install new brake pads, ensuring they are correctly oriented and seated.

6. Inspect and Replace Brake Rotors (if necessary)

Remove the rotor retaining screws (if applicable) and slide the rotor off the hub.
Inspect the new rotor for any protective coating; clean it with brake cleaner.
Install the new rotor onto the hub.

7. Reassemble Brake Components

Reattach the caliper over the new brake pads and rotor.
Torque the caliper mounting bolts to the manufacturer's specifications (typically around 20-25 ft-lbs).

8. Reinstall Wheels

Place the wheels back on the hub and hand-tighten the lug nuts.
Lower the vehicle back to the ground and torque the lug nuts to the manufacturer's specifications (usually 76-83 ft-lbs).

9. Final Checks

Pump the brake pedal to seat the pads against the rotor.
Check the brake fluid level and top off if necessary.