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

487 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

•Disconnect the battery before working on electrical systems.
•Allow brake components to cool before handling.

Symptoms

•Grinding noise during braking
•Vibration felt in the brake pedal
•Reduced braking efficiency
•Brake warning light illuminated
•Unusual wear patterns on brake pads or rotors

Diagnostic Steps

1
Inspect brake pads for wear and damage.
2
Check brake rotors for scoring or warping.
3
Verify that brake calipers are functioning properly.
4
Inspect brake fluid level and condition.
5
Scan vehicle for any brake-related fault codes using 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

•Socket set
•Torque wrench
•Brake grease
•OBD-II scanner
•Micrometer

Parts Required

•Brake pads
•Brake rotors
•Brake calipers

Related Faults

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Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and engage the parking brake.
Disconnect the 12V battery for safety.

2. Remove Wheel

Use a socket set to loosen and remove the wheel lug nuts.
Safely lift the vehicle using a jack and secure it with jack stands.
Remove the wheel to access the brake components.

3. Inspect Brake Components

Brake Pads:
- Remove the caliper bolts using a socket wrench.
- Slide the caliper off the rotor and inspect brake pads for thickness; replace if less than 3mm.
Brake Rotors:
- Check the rotor surface for score marks or grooves.
- Measure rotor thickness with a micrometer; replace if below the manufacturer’s minimum specification.
Brake Calipers:
- Inspect for leaks or damage. Ensure the caliper piston moves freely; replace if necessary.

4. Replace Components (if needed)

Brake Pads:
- Clean caliper bracket and apply brake grease to contact points.
- Install new brake pads, ensuring correct orientation.
Brake Rotors:
- If replacing, remove the old rotor and install the new one, ensuring it is properly seated.
Calipers:
- If replacing, install new calipers and reconnect brake lines securely.

5. Reassemble and Test

Reattach the caliper and secure the bolts to the manufacturer’s torque specifications.
Reinstall the wheel and tighten lug nuts in a crisscross pattern.
Lower the vehicle and reconnect the battery.