why does my Renault Clio V (2019-Present) brake pedal feel spongy

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and secure it with wheel chocks.
• Wear safety gloves and goggles for protection.

2. Inspect and Top Off Brake Fluid

• Locate the brake master cylinder reservoir.
• Remove the cap and check the fluid level; it should be between the minimum and maximum marks.
• If low, top off with the appropriate brake fluid type (DOT 4).

3. Check for Leaks and Damaged Components

• Visually inspect all brake lines, hoses, and calipers for signs of leaking fluid or damage.
• Repair or replace any damaged components found during the inspection.

4. Bleed the Brake Lines

• Connect a brake bleeder kit to the brake caliper.
• Start with the brake caliper furthest from the master cylinder (usually the rear passenger side).
• Open the bleeder valve and have an assistant pump the brake pedal several times.
• Close the bleeder valve when fluid flows without air bubbles, then repeat for the remaining calipers in the following order: rear driver side, front passenger side, and front driver side.
• Check fluid level in the master cylinder and top off as necessary.

5. Test Brake Booster

• With the engine running, press the brake pedal several times to deplete vacuum.
• Hold the pedal down and start the engine; the pedal should drop slightly indicating the booster is functioning correctly.
• If it does not drop, inspect the vacuum hose and brake booster for issues.