my Tesla Model S Original (2012-2020) is making 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

544 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 (2012-2020). 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 on a flat surface, and engage the parking brake.
•Allow the vehicle to cool before working on the brakes.
•Always disconnect the battery before working on electrical systems related to the brakes.

Symptoms

•Grinding noise during braking
•Reduced braking efficiency
•Vibration in the brake pedal or steering wheel
•Warning lights related to braking system may illuminate
•Increased stopping distance

Diagnostic Steps

1
Inspect brake pads for wear and tear using a visual inspection.
2
Check brake rotors for scoring or damage.
3
Verify brake fluid levels and condition.
4
Scan for any error codes related to the braking system using an OBD-II scanner.
5
Examine brake calipers for sticking or malfunction.
6
Test the brake system by applying brakes at low speeds to replicate the noise.

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
•Torque wrench
•OBD-II scanner

Parts Required

•Brake pads
•Brake rotors (if necessary)
•Anti-squeal lubricant

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Diagnostic Steps

1
Inspect brake pads for wear and tear using a visual inspection.
2
Check brake rotors for scoring or damage.
3
Verify brake fluid levels and condition.
4
Scan for any error codes related to the braking system using an OBD-II scanner.
5
Examine brake calipers for sticking or malfunction.
6
Test the brake system by applying brakes at low speeds to replicate the noise.

Solution

1. Preparation

Tools Required: Jack, jack stands, lug wrench, torque wrench, OBD-II scanner.
Safety Warning: Ensure the vehicle is on a flat surface, and engage the parking brake. Allow the vehicle to cool before working on the brakes.

2. Brake Pad Replacement

Lift the Vehicle:
- Use a jack to elevate the vehicle and secure it with jack stands.
Remove Wheel:
- Use a lug wrench to remove the lug nuts and take off the wheel.
Remove Brake Caliper:
- Unbolt the caliper using the appropriate socket size and hang it securely without stressing the brake line.
Remove Old Brake Pads:
- Slide the old brake pads out of the caliper bracket.
Inspect Components:
- Check the caliper, bracket, and rotor for damage or wear.
Install New Brake Pads:
- Apply anti-squeal lubricant to the backing of the new brake pads and install them in the caliper bracket.
Reattach Brake Caliper:
- Position the caliper over the new pads and secure it with the bolts. Torque to manufacturer specifications.
Reinstall Wheel:
- Place the wheel back on and hand-tighten the lug nuts. Lower the vehicle and torque the lug nuts to the manufacturer's specifications.

3. Brake Rotor Replacement (if necessary)

Remove Brake Rotor:
- If the rotors are damaged, unbolt them from the hub and slide them off.
Install New Brake Rotor:
- Position the new rotor onto the hub and secure it with bolts as per manufacturer specifications.
Reassemble Braking System:
- Follow the previous steps to reinstall the caliper and wheel.