Brake Fluid Level

Check that the fluid level in the reservoir tank is within the specified range (MAX - MIN lines).
Visually check for any brake fluid leakage around the reservoir tank.
Check the brake system for any leakage if the fluid level is extremely low (lower than MIN).
Check the brake system for fluid leakage if the warning lamp remains illuminated even after the parking brake is released.
Check the reservoir tank for the mixing of foreign matter (e.g. dust) and oils other than brake fluid.