What is the procedure for replacing brake fluid?
2 Answers
Turn off the vehicle and open the cap of the brake fluid reservoir. Use a syringe to extract all the brake fluid inside until the reservoir is empty. Pour new brake fluid into the reservoir (1-2 liters), depending on the reservoir's capacity.
I've changed the brake fluid several times myself, and each time it went smoothly. First, prepare new fluid like DOT4, then gather the tools: a brake fluid wrench, a suction tube or suction gun, a small container, gloves, etc. Park the car on level ground and engage the handbrake, open the hood and locate the brake fluid reservoir. Use the suction tube to extract the old fluid into the container to avoid contaminating the ground. Then pour in new fluid up to the full line. At this point, you'll need a friend's help: you sit in the car and press the brake pedal four or five times, while I loosen each wheel's bleed valve one by one to release the old fluid and air until new fluid flows out without bubbles, then tighten the valve. Don't forget to check that the fluid level is between MAX and MIN, and test the brake pedal before driving to ensure it feels firm and steady. Change it regularly every two years, as brake fluid absorbs moisture and becomes sticky, affecting brake response time. Don't skimp on this expense—safety comes first.
