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

533 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

Fix grinding noise when braking in Tesla Model S (2012-2020). Step-by-step guide with diagnostic steps, tools required, and repair instructions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always disconnect the battery before working on electrical systems.
•Allow the vehicle's brakes to cool before starting any work to avoid burns.

Symptoms

•Grinding noise when applying brakes
•Vibration or pulsation felt through the brake pedal
•Reduced braking effectiveness or longer stopping distances
•Brake warning light illuminated on the dashboard
•Possible metallic debris or dust on the wheels

Diagnostic Steps

1
Inspect the brake pads visually for wear or damage.
2
Check the brake rotors for scoring, warping, or excessive wear.
3
Examine the brake calipers for proper operation and any sticking issues.
4
Inspect the brake fluid level and condition in the master cylinder.
5
Scan for any error codes related to the brake system using an 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

•OBD-II scanner
•Socket set
•Torque wrench
•Brake bleeder tool
•Jack and jack stands

Parts Required

•Brake pads
•Brake rotors
•Brake fluid

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Diagnostic Steps

1
Inspect the brake pads visually for wear or damage.
2
Check the brake rotors for scoring, warping, or excessive wear.
3
Examine the brake calipers for proper operation and any sticking issues.
4
Inspect the brake fluid level and condition in the master cylinder.
5
Scan for any error codes related to the brake system using an OBD-II scanner.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and engage the parking brake.
Disconnect the 12V battery to prevent electrical shorts.

2. Remove Wheel Assembly

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

3. Inspect and Replace Brake Pads

Remove the caliper bolts using a socket set.
Carefully slide the caliper off the rotor without disconnecting the brake line.
Remove the old brake pads from the caliper bracket.
Inspect the caliper slides and lubricate if necessary.
Install new brake pads, ensuring they are oriented correctly.

4. Inspect and Replace Brake Rotors

If rotors are damaged, remove them from the hub by unscrewing the retaining screws (if applicable).
Clean the hub surface with brake cleaner to remove any debris.
Install new rotors, ensuring they are seated properly and secure.

5. Reassemble Brake Components

Reattach the caliper over the new brake pads and secure it with caliper bolts.
Reinstall the wheel and tighten lug nuts in a crisscross pattern to the manufacturer's torque specifications.
Reconnect the battery.

6. Brake System Bleeding

If brake fluid was lost, bleed the brake system using a brake bleeder tool to remove any air from the lines.
Check the brake fluid level and top off if necessary.