what causes my Tesla Model S Plaid/Refresh (2021-present) brake pedal to feel soft

Solution

1. Preparation

• Tools Required: Jack, jack stands, brake fluid, wrench set, multimeter, brake cleaner.
• Ensure the vehicle is parked on a level surface and the parking brake is engaged.
• Disconnect the vehicle's battery to prevent any electrical issues.

2. Check Brake Fluid Level

• Locate the brake fluid reservoir under the hood.
• If the fluid level is low, add the manufacturer-recommended brake fluid until it reaches the proper level.
• Inspect for any signs of contamination or discoloration and replace if necessary.

3. Inspect Brake Lines and Components

• Raise the vehicle using a jack and secure it with jack stands.
• Visually inspect all brake lines for leaks, cracks, or damage.
• Check the brake calipers and brake pads for proper installation and wear. Replace pads if they are worn down to the indicators.

4. Bleed the Brake System

• Attach a brake bleeder kit to the brake caliper.
• Open the bleeder valve and have an assistant pump the brake pedal several times until no air bubbles are present in the fluid.
• Close the bleeder valve and repeat for all calipers, starting from the furthest from the master cylinder.
• Recheck the brake fluid level and top up if necessary.

5. Reassemble and Test

• Reconnect the battery and lower the vehicle.
• Test the brake pedal by pressing it several times to ensure it feels firm.
• Perform a test drive at low speeds to ensure proper braking function.