why does my Tesla Model Y Current (2020-present) have inconsistent braking response

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, brake fluid tester, torque wrench.
• Ensure the vehicle is parked on a level surface and engage the parking brake.
• Disconnect the negative terminal of the battery to avoid electrical shorts.

2. Brake Fluid Inspection and Replacement

• Sub-steps:
  1. Remove the cap from the brake fluid reservoir and check the fluid level.
  2. Use a brake fluid tester to check for moisture content. If it is above 3%, replace the fluid.
  3. To replace, siphon out old fluid using a brake bleeder kit.
  4. Refill with manufacturer-recommended brake fluid (typically DOT 3 or DOT 4).
  5. Bleed the brakes to remove air bubbles: Start from the furthest wheel from the master cylinder.

3. Brake Component Inspection and Replacement

• Sub-steps:
  1. Remove the wheel to access the brake components.
  2. Inspect brake pads for thickness; replace if they are worn down (less than 3mm).
  3. Check rotors for scoring or warping; machine or replace if damaged.
  4. Reassemble all components, ensuring proper torque specifications (e.g., caliper bolts to 25-30 ft-lbs).
  5. Reattach the wheel and torque the lug nuts to manufacturer specifications.

4. ABS System Check

• Sub-steps:
  1. Reconnect the negative battery terminal.
  2. Use the OBD-II scanner to check for ABS codes; follow manufacturer procedures to clear codes.
  3. Test drive the vehicle to ensure the ABS engages properly during hard braking.