Sentra L4-2.5L (QR25DE) (2003)
Brake Fluid: Testing and Inspection
Checking Brake Fluid Level and Leaks
Check fluid level in reservoir tank. It should be between MAX and MIN lines on reservoir tank.
If fluid level is extremely low, check brake system for leaks.
Release parking brake lever and see if brake warning lamp goes off. If not, check brake system for leaks.