my Toyota RAV4's brake pedal goes to the floor, what does that mean?

Solution

1. Preparation

• Gather tools and parts needed.
• Ensure the vehicle is parked on a flat surface and the parking brake is engaged.
• Wear safety glasses and gloves.

2. Inspect and Refill Brake Fluid

• Tools Required: Brake fluid, funnel.
• Check the brake fluid reservoir; if low, add the appropriate brake fluid (DOT 3 or DOT 4 as specified in the owner's manual).
• Look for any signs of contamination in the fluid.

3. Check for Leaks

• Tools Required: None.
• Inspect brake lines, hoses, and connections for any signs of leaks or wear.
• If leaks are found, mark the locations for repair.

4. Replace Components as Necessary

• Tools Required: Wrench set, socket set, jack, jack stands.
• If the master cylinder is faulty, remove it by loosening the mounting bolts and disconnecting the brake lines.
• Replace it with a new master cylinder and bleed the brake system.
• If brake hoses are cracked, replace them by disconnecting the old hoses and installing new ones.

5. Bleed the Brake System

• Tools Required: Brake bleeder kit or a friend to assist.
• Start at the wheel farthest from the master cylinder, typically the right rear.
• Open the bleeder valve and pump the brake pedal until fluid runs clear; close the valve and repeat for all wheels in the correct order.