my Honda Accord makes a grinding noise when I brake what's causing it

Honda Accord 10th Generation (2018-2022)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

533 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 noise when braking in Honda Accord. 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 brakes to cool down before working on them.
•Ensure the vehicle is securely elevated and supported before working underneath.

Symptoms

•Grinding noise when applying brakes
•Reduced braking performance
•Vibration in the brake pedal
•Brake warning light illuminated
•Increased pedal travel before resistance is felt

Diagnostic Steps

1
Inspect brake pads for wear and damage.
2
Check brake rotors for scoring or warping.
3
Examine brake calipers for proper function and any sticking.
4
Inspect brake lines for leaks or damage.
5
Verify brake fluid level and condition.
6
Scan for any error codes related to the braking system using an OBD-II scanner.

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

•Lug wrench
•Socket set
•Torque wrench
•Jack and jack stands
•Bungee cord

Parts Required

•Brake pads
•Brake rotors
•Brake fluid

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Diagnostic Steps

1
Inspect brake pads for wear and damage.
2
Check brake rotors for scoring or warping.
3
Examine brake calipers for proper function and any sticking.
4
Inspect brake lines for leaks or damage.
5
Verify brake fluid level and condition.
6
Scan for any error codes related to the braking system using an OBD-II scanner.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative battery terminal for safety.
Elevate the vehicle using a jack and secure it on jack stands.

2. Remove Wheel

Use a lug wrench to loosen and remove the wheel nuts.
Carefully remove the wheel to access the brake components.

3. Inspect and Replace Brake Pads

Inspection: Check the thickness of the brake pads. If they are below 3mm, they need to be replaced.
Replacement:
- Remove the caliper bolts using a socket set.
- Carefully slide the caliper off the rotor and support it with a bungee cord (do not let it hang by the brake line).
- Remove the old brake pads from the caliper bracket.
- Install new brake pads in the caliper bracket, ensuring they are properly seated.

4. Inspect and Replace Brake Rotors (if necessary)

Inspection: Look for signs of scoring or warping on the rotors.
Replacement:
- If rotors are damaged, remove the caliper bracket bolts and slide the caliper bracket off.
- Remove the rotor from the hub. If stuck, gently tap with a rubber mallet.
- Install new rotors, ensuring they are clean and properly seated on the hub.

5. Reassemble Components

Reinstall the caliper bracket over the new rotor.
Reattach the caliper and tighten the bolts to the manufacturer’s specified torque (usually around 25-35 ft-lbs).
Reinstall the wheel and tighten the lug nuts in a crisscross pattern.

6. Final Checks

Reconnect the negative battery terminal.
Check the brake fluid level and top off if necessary.