What should you check first in a hydraulic brake system?

• A. Fluid level and fluid type
• B. Fluid color only
• C. Brake pads wear
• D. Wheel alignment

Answer: (A)

In a hydraulic brake system, the ability to transfer your pedal force to the brakes depends on having the right amount of fluid and the correct fluid type. If the fluid level is low, air can enter the system, causing a spongy pedal and reduced stopping power. If the wrong fluid is used, it can degrade seals and rubber components, leading to leaks or poor braking performance. Checking fluid level and ensuring the correct fluid type is the essential first step before assessing other issues. Fluid color alone isn’t reliable, and brake pads wear or wheel alignment matter, but they don’t address the immediate hydraulic integrity of the system.