BRAKE FLUID LEVEL AND LEAKS: Checking Brake Fluid Level and Leaks

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

Check the brake fluid level in the reservoir tank. It should be between the "MAX" and "MIN" lines on the reservoir tank.
Visually check around reservoir tank for fluid leaks.
If the fluid level is extremely low, check the brake system.
If the brake warning lamp comes on when the fluid is at the correct level, check the brake fluid level switch and the parking brake switch.

Fig 1: Identifying MAX And MIN Brake Fluid Level

Courtesy of NISSAN NORTH AMERICA, INC.