my Tesla Model S Original (2012-2020) has uneven brake pad wear, what should I do?

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

514 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 (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 12V battery before working on electric vehicle systems.
•Allow the brakes to cool before starting the inspection or repair.

Symptoms

•Noticeable difference in thickness between front or rear brake pads
•Grinding noise when braking
•Vibration or pulsation in the brake pedal
•Increased stopping distance
•Brake warning light illuminated on the dashboard

Diagnostic Steps

1
Inspect brake pads visually for wear patterns and thickness on all wheels.
2
Check brake rotor condition for warping or scoring.
3
Examine the brake calipers for proper function and signs of sticking.
4
Assess suspension components, including bushings and ball joints, for wear or damage.
5
Verify wheel alignment using a professional alignment system.
6
Check tire condition and pressure for proper inflation and uneven wear.

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
•Caliper gauge
•Jack and jack stands

Parts Required

•New brake pads
•Brake rotor (if needed)

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Diagnostic Steps

1
Inspect brake pads visually for wear patterns and thickness on all wheels.
2
Check brake rotor condition for warping or scoring.
3
Examine the brake calipers for proper function and signs of sticking.
4
Assess suspension components, including bushings and ball joints, for wear or damage.
5
Verify wheel alignment using a professional alignment system.
6
Check tire condition and pressure for proper inflation and uneven wear.

Solution

1. Preparation

Gather necessary tools and safety equipment.
Park the vehicle on a flat surface and engage the parking brake.
Wear safety goggles and gloves.

2. Remove Wheel

Loosen the lug nuts using a socket wrench.
Lift the vehicle with a jack and secure it with jack stands.
Remove the lug nuts entirely and take off the wheel.

3. Inspect and Replace Brake Pads

Inspection:
- Check the brake pads for uneven wear; measure thickness with a caliper.
Replacement:
- If uneven wear is significant, remove the caliper bolts using a socket set.
- Carefully slide the caliper off the rotor, ensuring not to damage the brake line.
- Remove the old brake pads from the caliper bracket.
- Clean the caliper bracket with brake cleaner.
- Install new brake pads in the caliper bracket, ensuring they are seated properly.

4. Reinstall Caliper and Wheel

Slide the caliper back over the new brake pads and rotor.
Tighten the caliper bolts to the manufacturer’s specified torque (usually around 25-30 ft-lbs).
Reinstall the wheel and hand-tighten the lug nuts.
Lower the vehicle and fully tighten the lug nuts in a crisscross pattern to the manufacturer’s specifications.

5. Brake System Check

Pump the brake pedal several times to ensure the pads seat properly.
Check brake fluid levels and add if necessary.