Check the Brake Master Cylinder

The brake master cylinder plays a crucial role in a vehicle's stopping ability. The master cylinder is where brake fluid is stored, and brake fluid helps activate the brakes When the master cylinder begins to fail it will cause the brake pedal to feel squishy. This could lead to a failure in the brake system. Check the brake master cylinder at least once every three months for damage, wear and brake fluid level.

Procedure:
1. Clean the outside of the master cylinder with a lint-free rag. You can find the location of the master cylinder in the vehicle's owner's manual, but it is typically located in the engine compartment near the driver's side. If there is a residue of grease on the master cylinder, put some degreaser on the rag and wipe the master cylinder clean with it. Do not put the degreaser on the master cylinder directly to avoid contaminating the brake fluid.
2. Inspect the exterior of the master cylinder for leaks, cracks or holes. Pay close attention to where the hoses attach and inspect the ends of the brake lines for cracking and wear.
3. Pull the cap off of the master cylinder and clean it thoroughly with a rag. Check the level of the brake fluid. Most master cylinders will have an indicator on the side of the cylinder that marks where the fluid should reach. If there is no indicator, the fluid should be about 1/2-inch from the top of the cylinder.
4. Replace the missing brake fluid. Consult the owner's manual for instructions on what kind of brake fluid is required for the vehicle.