Brake Fluid Level

WARNING: This page is about a different car, the 2008 Infiniti EX35. However, it is still accessible from the selected car via links, so may be relevant.

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.

Fig 1: Identifying Brake Fluid Level

Courtesy of NISSAN MOTOR CO., U.S.A.