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

530 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. 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 engage the parking brake and use jack stands when working under the vehicle.
•Allow the brakes to cool before inspecting or working on them to avoid burns.

Symptoms

•Grinding noise when applying brakes
•Pulsation in the brake pedal
•Reduced braking effectiveness
•Vibration felt through the steering wheel
•Brake warning light may illuminate

Diagnostic Steps

1
Inspect brake pads for wear and proper installation.
2
Check brake rotors for damage or warping.
3
Examine brake calipers for proper operation and any sticking.
4
Inspect brake fluid levels and condition.
5
Use an OBD-II scanner to check for any related error codes.

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
•Brake cleaner
•Torque wrench
•Rubber gloves
•Micrometer

Parts Required

•Brake pads (if worn)
•Brake rotors (if damaged)
•Brake caliper grease (if calipers need lubrication)

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Solution

1. Preparation

Tools Required: Jack and jack stands, lug wrench, brake cleaner, torque wrench, rubber gloves.
Park the vehicle on a level surface and engage the parking brake.
Allow the vehicle to cool down if it has been driven recently.

2. Remove Wheel

Loosen the lug nuts slightly while the car is still on the ground.
Use the jack to lift the vehicle and place jack stands for safety.
Fully remove the lug nuts and take off the wheel to access the brake components.

3. Inspect Brake Components

Brake Pads:
- Check the thickness of the brake pads. If they are worn down to the wear indicators or below the minimum thickness (generally 3mm), replace them.
- Ensure that the pads are properly seated and not misaligned.
Brake Rotors:
- Inspect the rotors for any visible damage, such as scoring or warping.
- Use a micrometer to measure rotor thickness. If they are below the manufacturer's specifications or show signs of excessive wear, they need resurfacing or replacing.

4. Check Calipers

Ensure the brake calipers are functioning properly by checking for any signs of sticking or corrosion.
If the caliper slides are not moving freely, clean and lubricate them with appropriate brake grease.

5. Reassemble and Test

Reinstall the wheel and torque the lug nuts to the manufacturer’s specifications (typically around 100 lb-ft for Model S).
Lower the vehicle and remove the jack stands.
Perform a test drive to check for the grinding noise and ensure proper braking performance.