how to fix my Tesla Model S Original (2012-2020) grinding brakes that squeal

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

500 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 brakes on Tesla Model S (2012-2020). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always wear safety goggles and gloves when working on brakes.
•Ensure the vehicle is securely lifted before working underneath it.
•Disconnect the battery to prevent electrical shock or short circuits.

Symptoms

•Grinding noise when applying brakes
•Squealing sound during braking
•Reduced braking efficiency
•Vibration in the brake pedal
•Warning light for brake system (if applicable)

Diagnostic Steps

1
Inspect the brake pads for wear and thickness using a visual inspection or a brake pad gauge.
2
Check brake rotors for damage, scoring, or warping.
3
Examine brake calipers for proper operation and any signs of leaks.
4
Verify brake fluid level and condition in the master cylinder reservoir.
5
Use an OBD-II scanner to check for any brake system-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

•Socket set
•Torque wrench
•Brake pad gauge
•Brake fluid
•Brake grease
•Jack and jack stands

Parts Required

•New brake pads
•New brake rotors (if required)
•Brake fluid (if needed)

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Diagnostic Steps

1
Inspect the brake pads for wear and thickness using a visual inspection or a brake pad gauge.
2
Check brake rotors for damage, scoring, or warping.
3
Examine brake calipers for proper operation and any signs of leaks.
4
Verify brake fluid level and condition in the master cylinder reservoir.
5
Use an OBD-II scanner to check for any brake system-related error codes.

Solution

1. Preparation

Gather all required tools and parts.
Ensure the vehicle is parked on a level surface and engage the parking brake.
Safety warning: Disconnect the battery to prevent electrical shock or short circuits.

2. Remove Wheel

Use a jack to lift the vehicle and secure it on jack stands.
Remove the lug nuts using a socket set and take off the wheel to access the brake components.

3. Inspect and Replace Brake Pads

Inspect Pads:
- Remove the caliper bolts using a torque wrench.
- Carefully slide the caliper off the rotor and hang it using a bungee cord to avoid straining the brake line.
- Check the thickness of the brake pads; if they are worn below 3mm, they should be replaced.
Replace Pads:
- Remove old brake pads from the caliper bracket.
- Apply brake grease to the back of the new pads to reduce noise.
- Install the new brake pads in the caliper bracket.

4. Inspect and Replace Brake Rotors (if necessary)

Check Rotors:
- Measure rotor thickness with a micrometer; if below manufacturer specifications, replace them.
- Inspect for signs of scoring or warping.
Replace Rotors:
- Remove the caliper bracket bolts and detach the bracket.
- Slide the old rotor off the hub and replace it with a new rotor.
- Reinstall the caliper bracket and torque the bolts to manufacturer specifications.

5. Reassemble Components

Reattach the caliper over the new pads and rotor.
Tighten caliper bolts to the specified torque.
Reinstall the wheel and lug nuts, then lower the vehicle back to the ground.

6. Check Brake Fluid

Refill brake fluid if necessary and ensure there are no leaks.
Bleed the brake system if air is suspected in the lines.

Tools Required:

Socket set
Torque wrench
Brake pad gauge
Brake fluid
Brake grease
Jack and jack stands

Parts Required:

New brake pads
New brake rotors (if required)
Brake fluid (if needed)

Estimated Repair Time: 2-4 hours

Safety Warnings:

Always wear safety goggles and gloves when working on brakes.
Ensure the vehicle is securely lifted before working underneath it.