why does my Toyota Camry have a hard brake pedal sometimes

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and engage the parking brake.
• Wear safety gloves and goggles.

2. Inspect and Replace Brake Fluid

• Sub-steps:
  1. Locate the brake master cylinder reservoir.
  2. Remove the cap and check the fluid level; if low, top it up with the recommended brake fluid (DOT 3 or DOT 4).
  3. If fluid is dark or contaminated, perform a brake fluid flush.
  4. Bleed the brake lines to remove any air bubbles.

Tools Required: Brake fluid, funnel, brake bleeder kit

3. Test and Replace Brake Booster

• Sub-steps:
  1. Disconnect the vacuum line from the brake booster.
  2. Use a vacuum gauge to check for sufficient vacuum (should be around 18-22 inHg).
  3. If vacuum is low, inspect the vacuum source for leaks and repair as needed.
  4. If the booster is damaged, remove the mounting bolts and disconnect the brake master cylinder.
  5. Replace the brake booster with a new unit and reassemble.

Tools Required: Socket set, vacuum gauge

4. Inspect Brake Lines and Components

• Sub-steps:
  1. Visually inspect all brake lines for cracks, corrosion, or leaks.
  2. Replace any damaged brake lines with new ones.
  3. Inspect brake calipers for proper function. Replace if they show signs of seizing or wear.

Tools Required: Wrench set, brake line flaring tool (if necessary)