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

521 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.
•Allow the brakes to cool down before performing any inspections or repairs.

Symptoms

•Grinding noise during braking
•Vibration felt in the brake pedal
•Reduced braking effectiveness
•Brake warning light illuminated on the dashboard
•Increased stopping distance

Diagnostic Steps

1
Inspect brake pads for wear and damage visually.
2
Check brake rotors for scoring, warping, or uneven wear.
3
Examine brake fluid level and condition.
4
Inspect calipers for proper functioning and any signs of sticking.
5
Scan for error codes using an OBD-II scanner specific 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

•Jack and jack stands
•Lug wrench
•Torque wrench
•Brake cleaner
•OBD-II scanner

Parts Required

•Brake pads
•Brake rotors (if damaged)

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Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface, and the parking brake is engaged.
Disconnect the battery to prevent any electrical issues during repair.

Tools Required:

Jack and jack stands
Lug wrench
Torque wrench
Brake cleaner
OBD-II scanner

2. Remove Wheel

Loosen the lug nuts slightly while the vehicle is on the ground.
Lift the vehicle using a jack and secure it with jack stands.
Remove the lug nuts completely and take off the wheel to access the braking components.

3. Inspect and Replace Brake Pads

Inspect the brake pads for thickness; replace if they are below the minimum thickness (usually 3mm).
If replacement is needed, remove the caliper bolts using the appropriate socket.
Carefully slide the caliper off the rotor and support it with a bungee cord to avoid stressing the brake line.
Remove the old brake pads from the caliper bracket.
Install new brake pads, ensuring they are aligned correctly and fit snugly.

4. Inspect and Replace Brake Rotors (if necessary)

Check the brake rotors for any scoring or warping. If damaged, remove the caliper bracket (if applicable) and rotor.
Use a torque wrench to remove the rotor retaining screws if present.
Install new rotors by reversing the removal process and torqueing to manufacturer specifications.

5. Reassemble and Test

Reattach the caliper and torque bolts to the specified values.
Reinstall the wheel and hand-tighten the lug nuts.
Lower the vehicle and torque the lug nuts to the manufacturer’s recommended specifications.
Reconnect the battery.