How often should the brake fluid in a Corolla be changed?

[KateMarie]

The brake fluid in a Corolla should be changed every 40,000 kilometers, but this interval can vary depending on usage. The replacement cycle of brake fluid is related to the brand of the brake fluid and the vehicle model, and the brake fluid will gradually deteriorate over time. You can determine whether the brake fluid needs to be changed based on the following phenomena: 1. When driving at a speed of over 40 KM/h, if you slam on the brakes and the braking distance becomes significantly longer, and after ruling out issues with the brake pads, it can basically be concluded that there is a problem with the brake fluid. 2. If the braking force is inconsistent, sometimes light and sometimes heavy, it may indicate that the brake fluid has deteriorated, with a water content exceeding 2.5%. Frequent braking generates high temperatures, turning the water in the brake fluid into steam and creating a large number of bubbles, leading to unstable braking force. 3. If the brake pedal feels soft when pressed, even when fully depressed, it may indicate that the brake fluid has deteriorated. Especially after continuous and frequent braking, the brake pedal will feel much softer and more elastic compared to before.