1. Gather the necessary materials. You will need:
* Brake fluid (check your vehicle's owner's manual for the correct type)
* A funnel
* A wrench
* A turkey baster or suction gun (optional)
2. Park your vehicle on a level surface. Turn off the engine and allow it to cool down completely.
3. Locate the brake fluid reservoir. It is usually located under the hood, near the firewall. The reservoir is typically made of clear plastic and has a cap that says "Brake Fluid" or "DOT 3" or "DOT 4."
4. Remove the cap from the brake fluid reservoir. Be careful not to spill any brake fluid.
5. Inspect the brake fluid. The brake fluid should be clear and free of bubbles. If it is dark or cloudy, it should be replaced.
6. Add brake fluid if necessary. If the brake fluid level is low, add enough brake fluid to bring it up to the "Full" line. Do not overfill the reservoir.
7. Replace the cap on the brake fluid reservoir. Tighten the cap until it is snug.
8. Start the engine. Allow the engine to run for a few minutes to circulate the brake fluid.
9. Test the brakes. Apply the brakes gently to make sure they are working properly. If the brakes feel spongy or weak, you may need to add more brake fluid.
Adding brake fluid is a relatively simple process, but it is important to do it correctly. If you are uncomfortable doing it yourself, you can take your vehicle to a qualified mechanic.
