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

504 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

•Disconnect the battery before working on electrical systems.
•Ensure the vehicle is securely lifted and supported with jack stands before working underneath it.

Symptoms

•Grinding noise when applying brakes
•Reduced braking efficiency
•Vibration in the brake pedal
•Warning lights on the dashboard (if applicable)
•Increased stopping distance

Diagnostic Steps

1
Inspect the brake pads for wear and damage.
2
Check for debris or contamination on the brake rotors and pads.
3
Examine the brake rotors for scoring or warping.
4
Inspect the brake calipers for proper operation and any leaks.
5
Scan the vehicle for error codes related to the braking system.

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
•Jack and jack stands

Parts Required

•New brake pads
•New brake rotors (if needed)

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Solution

1. Preparation

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

2. Remove Wheel

Use a socket set to loosen the lug nuts slightly before lifting the vehicle.
Raise the vehicle using a jack and secure it with jack stands.
Fully remove the lug nuts and take off the wheel.

3. Inspect and Replace Brake Pads

Inspect the brake pads for thickness. Replace if they are below the manufacturer's recommended minimum thickness (usually around 3mm).
If replacement is necessary:
- Remove the caliper bolts using the appropriate socket.
- Carefully slide the caliper off the brake pads.
- Replace the old pads with new ones, ensuring they are oriented correctly.
- Apply brake grease to the backing of the new pads to reduce noise.

4. Inspect and Replace Brake Rotors (if necessary)

Examine the rotors for grooves, scoring, or warping. If damaged:
- Remove the caliper bracket bolts and lift the caliper assembly away from the rotor.
- Remove the rotor from the hub.
- Install new rotors, ensuring they are seated properly.
- Reassemble the caliper bracket over the new rotor.

5. Reassemble and Test

Reattach the caliper and tighten the bolts to the manufacturer’s specified torque (generally around 25-30 ft-lbs).
Reinstall the wheel and hand-tighten the lug nuts.
Lower the vehicle and fully tighten the lug nuts in a star pattern.

Tools Required:

Socket set
Torque wrench
Brake grease
Jack and jack stands

Parts Required:

New brake pads
New brake rotors (if needed)

Estimated Repair Time: 2-4 hours

Safety Warnings:

Disconnect the battery before working on electrical systems.
Ensure the vehicle is securely lifted and supported with jack stands before working underneath it.