What are the symptoms indicating the need for brake fluid replacement?

[PiperFitz]

The symptoms indicating the need for brake fluid replacement are: 1. The brake warning light illuminates or flashes during emergency braking or continuous braking; 2. The braking distance becomes significantly longer than before during emergency braking; 3. The brake pedal feels soft or weak when pressed; 4. The braking force feels inconsistent, sometimes light and sometimes heavy during braking. The steps for brake fluid replacement are: 1. Park the vehicle on a level surface, turn off the engine, open the hood, and drain the fluid from the reservoir; 2. Use a funnel to fill the reservoir with new brake fluid; 3. Use a jack to lift the vehicle and start removing the tires from the rear wheels; 4. Remove the rubber dust cap on the brake caliper; 5. Use a wrench to loosen the bleeder screw, attach a rubber tube to it, and connect it to a drain bottle; 6. Press the brake pedal inside the vehicle while observing the fluid drainage until the fluid level in the reservoir under the hood reaches the lower limit; 7. Start the vehicle and perform a brake test in a relatively safe area.