why does my Tesla Model S Plaid/Refresh (2021-present) make a grinding noise when braking?

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

483 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 S Plaid (2021-present). 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

•Disconnect the battery before working on electrical components.
•Ensure the vehicle is securely lifted before working under it.

Symptoms

•Grinding noise when applying brakes
•Decreased braking efficiency
•Brake pedal feels spongy or unresponsive
•Vibration or pulsation in the brake pedal
•Warning lights illuminated on the dashboard (e.g., brake system warning)

Diagnostic Steps

1
Inspect the brake pads for wear and damage.
2
Check the brake rotors for scoring, warping, or cracks.
3
Examine the brake calipers for proper function and fluid leaks.
4
Inspect the brake fluid level and condition.
5
Use an OBD-II scanner to check for any relevant error codes related to the braking system.

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
•Socket set
•Torque wrench

Parts Required

•Brake pads
•Brake rotors (if worn or damaged)

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Diagnostic Steps

1
Inspect the brake pads for wear and damage.
2
Check the brake rotors for scoring, warping, or cracks.
3
Examine the brake calipers for proper function and fluid leaks.
4
Inspect the brake fluid level and condition.
5
Use an OBD-II scanner to check for any relevant error codes related to the braking system.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and engage the parking brake.
Disconnect the battery for safety.

2. Remove Wheel Assembly

Tools Required: Jack, jack stands, lug wrench.
Loosen the lug nuts of the rear or front wheel (depending on the grinding noise source).
Lift the vehicle with a jack and secure it on jack stands.
Remove the wheel.

3. Inspect and Replace Brake Pads

Tools Required: Socket set, torque wrench.
Remove the caliper bolts and take off the brake caliper.
Carefully slide out the old brake pads.
Inspect the brake pads for thickness; replace if worn down to the wear indicators.
Install new brake pads ensuring they are correctly positioned.

4. Inspect and Replace Brake Rotors (if necessary)

Check the rotors for any visible damage or excessive wear.
If the rotors are damaged, remove the rotor by unscrewing the retaining screws.
Install new rotors, ensuring they are clean and free from debris.
Torque the rotor screws to the manufacturer’s specifications.

5. Reassemble and Test

Reattach the brake caliper and torque bolts to the manufacturer’s specifications.
Reinstall the wheel and lug nuts, tightening them in a star pattern.
Lower the vehicle and reconnect the battery.