For 1990-2009 cars

1. Inspect for master cylinder housing cracks.
2. If the master cylinder is cracked, replace the master cylinder. Refer to Master Cylinder Reservoir Replacement .

Important: A damp condition around the master cylinder is considered normal.

3. Inspect for brake fluid leaks around the master cylinder.

If the brake fluid has accumulated to form a drop of BRAKE fluid on the bottom of the master cylinder, repair or replace the master cylinder. Refer to Master Cylinder Overhaul or Master Cylinder Reservoir Replacement .

4. Inspect the brake fluid reservoir cap seal. If the brake fluid reservoir cap seal is swollen, perform the following steps:

4.1. | Flush the hydraulic brake system. Refer to Hydraulic Brake System Flushing .

| Important: Replace all of the brake system components that have internal rubber components that cannot be serviced.

4.2. | Replace all of the brake system rubber components.

4.3. | Flush the hydraulic brake system again. Refer to Hydraulic Brake System Flushing .