why does my Tesla Model S Plaid/Refresh (2021-present) have uneven brake pad wear

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

582 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 uneven brake pad wear in Tesla Model S Plaid. 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 wear safety goggles and gloves when working on the braking system.
•Ensure the vehicle is securely lifted and supported before working underneath.

Symptoms

•Noticeable difference in brake pad thickness between left and right wheels
•Increased brake noise (squealing or grinding) from one side
•Vibration or pulsing sensation when braking
•Warning lights or alerts on the dashboard related to braking system
•Reduced braking performance or 'spongy' brake feel

Diagnostic Steps

1
Inspect brake pads visually for wear patterns on all four wheels.
2
Check brake caliper function to ensure they are retracting properly.
3
Examine the brake rotor surface for uneven wear or warping.
4
Verify brake fluid level and condition in the reservoir.
5
Check suspension components for wear or damage that could affect alignment.
6
Perform a brake system diagnostic scan using Tesla's onboard diagnostics to check 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 cleaner
•Calipers
•Jack and jack stands

Parts Required

•New brake pads (OEM recommended)
•New brake rotors (if necessary)
•Brake grease

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Symptoms

•Noticeable difference in brake pad thickness between left and right wheels

•Increased brake noise (squealing or grinding) from one side

•Vibration or pulsing sensation when braking

•Warning lights or alerts on the dashboard related to braking system

•Reduced braking performance or 'spongy' brake feel

Diagnostic Steps

1
Inspect brake pads visually for wear patterns on all four wheels.
2
Check brake caliper function to ensure they are retracting properly.
3
Examine the brake rotor surface for uneven wear or warping.
4
Verify brake fluid level and condition in the reservoir.
5
Check suspension components for wear or damage that could affect alignment.
6
Perform a brake system diagnostic scan using Tesla's onboard diagnostics to check for error codes related to the braking system.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and set to "Jack Mode."
Disconnect the 12V battery to avoid electrical issues.

2. Wheel Removal

Loosen lug nuts on the affected wheels using a socket set.
Lift the vehicle with a jack and secure with jack stands.
Remove the wheels to access the brake components.

3. Inspect and Replace Brake Pads

Inspect Brake Pads:
- Check for uneven wear. If one side is significantly thinner, it may need replacement.
- Measure thickness using calipers.
Install New Brake Pads:
- Remove the caliper bolts using a socket set.
- Carefully slide the caliper off the rotor.
- Remove old brake pads and clean the caliper bracket with brake cleaner.
- Install new brake pads ensuring they match the specifications for the Tesla Model S.
- Apply brake grease to the backing of the pads to prevent noise.

4. Caliper and Rotor Inspection

Inspect the brake rotors for signs of scoring or warping.
If needed, replace the rotors with OEM parts.
Reinstall the caliper over the new pads and torque the caliper bolts to manufacturer specifications (typically around 25-30 Nm).

5. Reassemble and Test

Reinstall the wheels and hand-tighten the lug nuts.
Lower the vehicle and torque lug nuts to manufacturer specifications (around 130 Nm).
Reconnect the 12V battery and reset any brake system codes if necessary.