how to replace a faulty caliper in Tesla Model S Original (2012-2020)

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

critical

Severity

4 min read

636 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

Step-by-step guide to replace a faulty brake caliper on Tesla Model S (2012-2020). Learn symptoms, diagnostic steps, and repair instructions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always disconnect the battery before working on any electrical components.
•Allow brake components to cool before handling to avoid burns.

Symptoms

•Brake warning light illuminated on the dashboard
•Uneven wear on brake pads
•Vehicle pulling to one side during braking
•Brake fluid leakage around the wheel assembly
•Increased brake noise (squeaking or grinding)

Diagnostic Steps

1
Inspect the brake system visually for any signs of leaks or damage.
2
Check brake pad wear using a caliper gauge or visual inspection.
3
Use an OBD-II scanner to check for any related error codes.
4
Verify if the brake pedal feels spongy or if there is any unusual resistance.
5
Test the braking performance in a safe environment to confirm issues.

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
•Lug wrench
•Socket set
•Brake caliper tool
•Brake cleaner
•Torque wrench

Parts Required

•New brake caliper
•Brake line washers (if necessary)
•Brake fluid

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Diagnostic Steps

1
Inspect the brake system visually for any signs of leaks or damage.
2
Check brake pad wear using a caliper gauge or visual inspection.
3
Use an OBD-II scanner to check for any related error codes.
4
Verify if the brake pedal feels spongy or if there is any unusual resistance.
5
Test the braking performance in a safe environment to confirm issues.

Solution

1. Preparation

Tools Required: Jack and jack stands, lug wrench, socket set, brake caliper tool, brake cleaner, torque wrench.
Raise the vehicle using the jack and support it securely with jack stands.
Remove the wheel to access the brake caliper.

2. Remove the Caliper

Sub-steps:
1. Locate the caliper mounting bolts (usually two) on the caliper bracket.
2. Use the appropriate socket to remove the caliper mounting bolts.
3. Carefully slide the caliper off the brake rotor.
4. Support the caliper using a bungee cord or rope to prevent stress on the brake line.

3. Disconnect Brake Line

Sub-steps:
1. Place a drain pan under the caliper to catch any leaking brake fluid.
2. Using a flare nut wrench, carefully loosen the brake line from the caliper.
3. Remove the brake line and ensure that the banjo bolt and washers are kept for reuse or replacement if necessary.

4. Install New Caliper

Sub-steps:
1. Position the new caliper onto the brake rotor and align it with the mounting bracket.
2. Reconnect the brake line to the new caliper, ensuring that any washers are properly placed.
3. Tighten the brake line with the flare nut wrench to the manufacturer's torque specifications.

5. Reattach Caliper and Wheel

Sub-steps:
1. Reinstall the caliper mounting bolts and tighten them to the specified torque.
2. Clean the brake rotor surface with brake cleaner to remove any contaminants.
3. Reinstall the wheel and hand-tighten the lug nuts.
4. Lower the vehicle and then torque the lug nuts to the manufacturer's specifications.

6. Bleed the Brakes

Sub-steps:
1. Fill the brake fluid reservoir with the appropriate brake fluid.
2. Use a brake bleeder kit or have an assistant pump the brake pedal while you open the bleeder valve on the caliper to remove air from the system.
3. Continue until no air bubbles are present and fluid flows steadily.
4. Close the bleeder valve and ensure that the brake fluid level is adequate.