The brake fluid is located in the brake master fluid reservoir. You may need to check your car’s owner’s manual to see where it is located. However, it is usually toward the back of the engine compartment and may be marked by a symbol that looks like a stop sign with a circle surrounded by parentheses inside it. To check the fluid level, here’s what you need to do:
1. Open the hood.
2. Locate the cap to the brake master fluid reservoir.
3. Thoroughly wipe of the cap and top of the reservoir to prevent any contaminates from falling into the brake fluid.
4. Look into the reservoir to see if the fluid looks low.
Although you can top off brake fluid if it is low, you should be more concerned as to why it is low. Low brake fluid is an indication that you need to replace the pads or shoes, or that you have a leak in the system. Have your car checked out by a certified mechanic as soon as possible. If for some reason you do need to add brake fluid, make sure that you only add fluid that is recommended by the manufacturer and take care not to overfill.