why does my Tesla Model 3 Original (2017-2023) make a grinding noise when braking

Tesla Model 3 Highland (2024-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

562 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 Tesla Model 3 (2017-2023). 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

•Ensure the vehicle is securely supported on jack stands before working underneath.
•Allow the brakes to cool before inspection to avoid burns.

Symptoms

•Grinding noise when applying brakes
•Reduced braking efficiency
•Vibration in the brake pedal
•Brake warning light illuminated on the dashboard
•Increased stopping distance

Diagnostic Steps

1
Inspect brake pads for wear and tear using visual inspection.
2
Check brake rotors for scoring or warping.
3
Inspect brake calipers for proper function and alignment.
4
Examine brake fluid level and condition.
5
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

•Jack
•Jack stands
•Lug wrench
•OBD-II scanner
•Flashlight
•Torque wrench
•Brake cleaner
•Safety glasses
•Gloves

Parts Required

•Brake pads
•Brake rotors (if worn)
•Brake fluid (if needed)

Related Faults

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Solution

1. Preparation

Tools Required: Jack, jack stands, lug wrench, OBD-II scanner, flashlight, torque wrench, brake cleaner, safety glasses, gloves.
Ensure the vehicle is on a flat surface and engage the parking brake.

2. Lift the Vehicle

Use the jack to lift the front or rear of the vehicle (depending on the affected brakes).
Secure the vehicle with jack stands to prevent movement.

3. Remove Wheels

Using the lug wrench, loosen and remove the lug nuts.
Take off the wheels to access the brake components.

4. Inspect Brake Components

Brake Pads:
- Remove the brake caliper by unscrewing the caliper bolts.
- Take out the brake pads and inspect them for thickness and uneven wear.
Brake Rotors:
- Check the rotors for grooves or excessive wear. Use a micrometer to measure rotor thickness.
- If scoring or excessive wear is present, proceed to replace the rotors.

5. Replace Brake Pads and Rotors (if necessary)

If brake pads are worn below the manufacturer's minimum thickness, replace them:
- Install new brake pads, ensuring they are properly aligned.
If rotors are scored or below the minimum thickness, replace them:
- Remove the old rotor and install the new rotor, ensuring it is properly seated.

6. Reassemble Components

Reattach the brake caliper over the new pads and rotors. Torque the caliper bolts to the manufacturer's specifications.
Reinstall the wheel and tighten the lug nuts in a star pattern to ensure even pressure.

7. Lower the Vehicle

Carefully remove the jack stands and lower the vehicle back to the ground.

8. Test Brakes

Press the brake pedal a few times to seat the new pads against the rotors, then check for any unusual noises.