In this Autos, Motorcycles & Planes video tutorial you will learn how to check your brake fluid. There are two things that you need to check; the quantity and the quality of the brake fluid. Locate the reservoir for the brake fluid and check the level of the brake fluid inside the reservoir. The level should not be low. If it is low, fill in more fluid to bring it up to the max level. It also has a sensor that will tell you when the fluid level is getting low. To check the quality of the fluid, check its color. It should be clear; somewhat like cooking oil. If it is not then you need to change it.