my Ford Mustang S650 (2024-Present) has a persistent brake warning light, what’s wrong?

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is parked on a level surface and secure with wheel chocks.
• Disconnect the battery to prevent any electrical issues.

2. Inspect Brake Fluid Level

• Sub-steps:
  1. Open the hood and locate the brake fluid reservoir.
  2. Remove the cap and check the fluid level; it should be between the "MIN" and "MAX" marks.
  3. If low, add the recommended brake fluid (DOT 3 or DOT 4, as specified in the owner’s manual).

3. Check for Leaks

• Sub-steps:
  1. Inspect the brake lines from the master cylinder to the calipers for any signs of leaks or damage.
  2. Examine the brake calipers for fluid seepage.
  3. Clean any spilled fluid as it can damage the vehicle's paint.

4. Replace Brake Pads or Rotors (if worn)

• Sub-steps:
  1. Lift the vehicle using a jack and secure it with jack stands.
  2. Remove the wheel to access the brake assembly.
  3. Measure the thickness of the brake pads; if below specifications, replace them.
  4. Inspect the rotors for scoring or warping; replace if necessary.
  5. Reassemble the brake components and wheel.

5. Inspect and Replace Master Cylinder (if faulty)

• Sub-steps:
  1. Locate the master cylinder, typically near the brake fluid reservoir.
  2. Check for signs of wear or leaks; if found, remove the master cylinder.
  3. Install a new master cylinder using the manufacturer’s specifications for torque.
  4. Bleed the brake system to remove any air.