why does my Tesla Model S Plaid/Refresh make a grinding noise when I brake

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

550 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 the grinding noise when braking in Tesla Model S Plaid. Step-by-step guide with symptoms, diagnostic steps, 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 supported before working underneath.

Symptoms

•Grinding noise when applying brakes
•Possible vibration in the brake pedal
•Reduced braking efficiency
•Brake warning light illuminated on the dashboard
•Unusual wear on brake pads or rotors
•Increased stopping distance

Diagnostic Steps

1
Inspect brake pads for wear and damage.
2
Check brake rotors for scoring or warping.
3
Examine brake calipers for proper operation and leaks.
4
Verify brake fluid level and condition.
5
Scan for any error codes using an OBD-II scanner.
6
Test drive the vehicle to replicate the noise and assess braking performance.

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
•Jack and jack stands
•Torque wrench
•Brake cleaner
•Bungee cord

Parts Required

•Brake pads
•Brake rotors (if damaged)

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Diagnostic Steps

1
Inspect brake pads for wear and damage.
2
Check brake rotors for scoring or warping.
3
Examine brake calipers for proper operation and leaks.
4
Verify brake fluid level and condition.
5
Scan for any error codes using an OBD-II scanner.
6
Test drive the vehicle to replicate the noise and assess braking performance.

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a level surface and engage the parking brake.
Disconnect the 12V battery to ensure safety during the repair.

2. Remove Wheel Assembly

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

3. Inspect and Replace Brake Components

Inspect Brake Pads:
- Remove the brake caliper by unscrewing the caliper bolts with appropriate socket.
- Slide the caliper off the rotor and secure it using a bungee cord (do not let it hang by the brake line).
- Check the brake pads for uneven wear or thinning. Replace if necessary.
Inspect Brake Rotors:
- Check the rotors for grooves, warping, or scoring. If damaged, replace them.
- If they are within specifications, clean the surface with brake cleaner and a clean cloth.
Install New Components:
- If replacing pads or rotors, install new ones in reverse order, ensuring they are seated properly.

4. Reassemble and Reconnect

Reattach the brake caliper and torque the caliper bolts to the manufacturer’s specifications (typically around 30-40 Nm).
Reinstall the wheel and tighten the wheel nuts in a crisscross pattern to ensure even pressure.
Lower the vehicle and reconnect the battery.

5. Final Checks

Pump the brake pedal to ensure proper seating of the brake pads.
Check the brake fluid level and top off if necessary.