How often should the brake fluid of a Vios be replaced?

[RobertRose]

Toyota Vios brake fluid should be replaced every 2 years or 40,000 kilometers. However, if driving conditions are harsh, it is recommended to replace it every 1 year or 20,000 kilometers. Brake fluid can easily deteriorate over time, so timely replacement is necessary. When the brake fluid deteriorates, its water content becomes extremely high (exceeding 5%), which directly affects the dry and wet boiling points of the brake fluid. This not only makes it prone to vaporization, causing vapor lock and resulting in noticeably softer brake pedal feel, making the driver feel like the brakes are ineffective, but also affects the stability of the braking system, posing risks during continuous braking. Do not mix different types or brands of brake fluid. Due to differing formulations, mixing brake fluids can lead to a decline in brake fluid performance. If the brake fluid absorbs moisture or contains impurities, it should be replaced or filtered immediately. Otherwise, it may cause insufficient braking pressure and affect braking performance.