Volkswagen Golf Seventh Generation (2013-2020) brake pedal goes to the floor what should I do

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the parking brake is engaged.
• Place wheel chocks behind the rear wheels for safety.

2. Inspect and Replace Brake Fluid

• Tools Required: Brake fluid, funnel, clean rag
  • Check the brake fluid level; if low, top off with the manufacturer-recommended brake fluid (usually DOT 3 or DOT 4).
  • If the fluid is contaminated or old, consider flushing the brake system.

3. Check for Leaks

• Tools Required: Wrench set, brake cleaner
  • Visually inspect all brake lines and connections for leaks. Pay attention to the master cylinder, brake calipers, and ABS module.
  • If leaks are found, replace the damaged lines or components as necessary.

4. Bleed the Brake System

• Tools Required: Brake bleeder kit, wrench, clean container
  • Start with the wheel furthest from the master cylinder (usually rear passenger side).
  • Open the bleeder valve on the caliper, and have an assistant press the brake pedal several times, then hold it down.
  • Close the bleeder valve and release the brake pedal. Repeat until clear fluid flows without air bubbles.
  • Move to the next wheel and repeat the process until all brakes have been bled.

5. Inspect and Replace Master Cylinder if Necessary

• Tools Required: Wrench set, socket set, torque wrench
  • If the brake pedal still goes to the floor after bleeding, the master cylinder may be faulty.
  • Disconnect the brake lines from the master cylinder and remove it from the brake booster.
  • Install the new master cylinder, tightening the mounting bolts to the manufacturer's torque specifications.
  • Reattach the brake lines and bleed the system again.