why does my Tesla Model S Original (2012-2020) have 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

489 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

•Always allow the vehicle to cool before working on the brakes.
•Ensure the vehicle is securely supported on jack stands before removing any components.

Symptoms

•Grinding noise when applying brakes
•Reduced braking efficiency
•Vibration felt in the brake pedal
•Warning lights may illuminate on the dashboard
•Increased stopping distance

Diagnostic Steps

1
Inspect brake pads for wear or damage using a visual inspection.
2
Check for any debris or foreign objects lodged in the brake components.
3
Measure brake rotor thickness to ensure it is within specifications.
4
Examine brake calipers for sticking or improper operation.
5
Scan for any relevant error codes 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

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

Parts Required

•New brake pads
•Brake rotors (if necessary)

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Diagnostic Steps

1
Inspect brake pads for wear or damage using a visual inspection.
2
Check for any debris or foreign objects lodged in the brake components.
3
Measure brake rotor thickness to ensure it is within specifications.
4
Examine brake calipers for sticking or improper operation.
5
Scan for any relevant error codes using an OBD-II scanner.

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a level surface and engage the parking brake.
Disconnect the negative battery terminal to prevent electrical surges.

2. Remove Wheel

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

3. Inspect and Replace Brake Pads

Inspection:
- Remove the caliper bolts using a socket set.
- Carefully slide the caliper off the rotor and inspect the brake pads for wear.
Replacement:
- If pads are worn below the minimum thickness (usually 3mm), replace them.
- Install new brake pads, ensuring they are seated properly.
- Apply brake grease to the back of the pads to reduce noise.

4. Inspect and Resurface or Replace Rotors

Measure rotor thickness with caliper; if below specifications, replace the rotors.
If rotors are within specifications but have scoring, consider resurfacing.
Clean the rotor surface with brake cleaner before installation.

5. Reassemble Brake Components

Reattach the caliper over the new pads and torque bolts to manufacturer specifications (usually 30-40 ft-lbs).
Reinstall the wheel and tighten lug nuts in a crisscross pattern to ensure even seating.
Lower the vehicle and reconnect the negative battery terminal.