my Toyota Corolla E170 (2013-2019) rear brakes are grinding, what should I do

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

476 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 rear brakes on 2013-2019 Toyota Corolla E170. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always allow the brakes to cool before working on them.
•Ensure the vehicle is securely lifted before working underneath.

Symptoms

•Grinding noise from the rear brakes during braking
•Pulsation felt in the brake pedal
•Reduced braking performance
•Visual wear on brake pads or rotors
•Possible warning light on the dashboard

Diagnostic Steps

1
Inspect rear brake pads for wear, ensuring they are not below the minimum thickness.
2
Check rear brake rotors for scoring or damage.
3
Examine brake calipers for proper function and signs of leakage.
4
Assess brake fluid level and condition.
5
Test brake performance by applying brakes at low speed.

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
•Torque wrench
•Jack and jack stands
•Brake cleaner
•Anti-squeal lubricant

Parts Required

•New brake pads
•New brake rotors (if necessary)
•Brake fluid (if needed)

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Solution

1. Preparation

Gather tools and parts needed for the repair.
Ensure the vehicle is parked on a flat surface and engage the parking brake.
Disconnect the battery to prevent any electrical issues during repair.

2. Raise the Vehicle

Use a jack to lift the rear of the vehicle and secure it with jack stands.
Remove the rear wheels using a socket set.

3. Remove Brake Components

Remove the caliper bolts with a socket and ratchet.
Carefully slide the caliper off the rotor and suspend it using a bungee cord or suitable wire to avoid stress on the brake line.
Remove the brake pads from the caliper bracket.

4. Inspect and Replace

Inspect the rotor for wear; if scored or damaged, replace the rotor.
If the brake pads are worn, replace them with new ones. Ensure they match OEM specifications.
If necessary, clean the caliper bracket and apply anti-squeal lubricant to the back of the new pads.

5. Reassemble and Test

Reinstall the caliper over the new pads and rotor, tightening the caliper bolts to the manufacturer’s specified torque (typically around 25-30 ft-lbs).
Reattach the rear wheels and lower the vehicle.
Reconnect the battery and check the brake fluid level, adding fluid if necessary.