how to fix uneven brake pad wear on Tesla Model S Original (2012-2020)

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

615 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 on Tesla Model S (2012-2020). 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

•Ensure the vehicle is securely supported before working underneath it.
•Allow the brake components to cool before handling, as they can become very hot during use.

Symptoms

•Warning light on the dashboard indicating brake issues
•Pulsating brake pedal during braking
•Increased stopping distance
•Noise (squeaking or grinding) when braking
•Uneven thickness of brake pads upon inspection
•Vibration in the steering wheel while braking

Diagnostic Steps

1
Inspect brake pads visually for uneven wear patterns.
2
Check brake rotor condition for warping or scoring.
3
Examine brake calipers for proper operation and any sticking.
4
Measure brake fluid level and condition.
5
Test the brake system for hydraulic pressure discrepancies.
6
Inspect suspension components for wear that may affect braking.

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
•C-clamp
•Protective gloves

Parts Required

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

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Diagnostic Steps

1
Inspect brake pads visually for uneven wear patterns.
2
Check brake rotor condition for warping or scoring.
3
Examine brake calipers for proper operation and any sticking.
4
Measure brake fluid level and condition.
5
Test the brake system for hydraulic pressure discrepancies.
6
Inspect suspension components for wear that may affect braking.

Solution

1. Preparation

Gather tools and safety equipment.
Tools required: jack and jack stands, socket set, torque wrench, brake cleaner, C-clamp, and protective gloves.
Safety warnings: Ensure the car is parked on a flat surface, engage the parking brake, and wear gloves and safety glasses.

2. Remove Wheel

Loosen the lug nuts while the vehicle is on the ground.
Use the jack to lift the vehicle and secure it with jack stands.
Remove the wheel to access the brake assembly.

3. Inspect and Replace Brake Pads

Inspect Brake Pads:
- Check for uneven wear; replace pads that are excessively worn.
Remove Old Brake Pads:
- Using the socket set, remove the caliper bolts.
- Carefully lift the caliper off the rotor and support it with a bungee cord or rope.
- Remove the old brake pads from the caliper bracket.
Install New Brake Pads:
- Apply brake grease to the back of the new pads to prevent noise.
- Slide the new pads into the caliper bracket.

4. Inspect and Service Brake Rotors

Check Rotors:
- Measure rotor thickness and check for warping with a dial gauge.
- If warped or below minimum thickness, replace rotors.
Resurface Rotors:
- If still within specifications, use a brake lathe to resurface rotors if necessary.

5. Reassemble Brake Components

Reinstall Caliper:
- Use the C-clamp to compress the caliper piston if necessary.
- Reposition the caliper over the new brake pads and secure it with the caliper bolts.
- Torque the caliper bolts to manufacturer specifications (typically around 25-30 ft-lbs).
Reattach Wheel:
- Put the wheel back on and hand-tighten the lug nuts.
- Lower the vehicle and then torque the lug nuts to the manufacturer's specifications (typically around 100-110 ft-lbs).

6. Test the Brake System

Pump the brake pedal several times to ensure proper engagement of the pads.
Check for any leaks around the caliper and lines.