Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2002 Kia Optima L4-2.4LFACTORY OEM SERVICE PROCEDURE
Brake Fluid: Service and Repair
CHANGING BRAKE FLUID
1. Refer to Brakes for air-bleeding procedures.
2. Connect a vinyl tube to the bleeder screw of each wheel cylinder. Put the other end of the vinyl tube into a container to receive the brake fluid.
3. With a vehicle equipped ABS (Anti-lock Brake System), refer to Brakes.
4. Depress the brake pedal a few times. Then loosen the bleeder (with the brake pedal still depressed), and tighten it after the brake fluid stops flowing.
5. Repeat the above operation until to air bubbles are in the brake fluid.
6. Repeat these steps for the other cylinders.
7. Add fresh brake fluid up to the "MAX" level in the reserve tank.
Brake fluid: DOT 3 or equivalent.
1. Refer to Brakes for air-bleeding procedures.
2. Connect a vinyl tube to the bleeder screw of each wheel cylinder. Put the other end of the vinyl tube into a container to receive the brake fluid.
3. With a vehicle equipped ABS (Anti-lock Brake System), refer to Brakes.
4. Depress the brake pedal a few times. Then loosen the bleeder (with the brake pedal still depressed), and tighten it after the brake fluid stops flowing.
5. Repeat the above operation until to air bubbles are in the brake fluid.
6. Repeat these steps for the other cylinders.
7. Add fresh brake fluid up to the "MAX" level in the reserve tank.
Brake fluid: DOT 3 or equivalent.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.