How to Determine if Brake Fluid Needs Replacement?

[VanGia]

Commonly, a brake fluid tester is used. Brake fluid needs replacement if its water content exceeds 3%. Here are methods to determine if brake fluid needs replacement: 1. During maintenance, the technician will use a tester to check your brake fluid. A green light indicates a water content of 0.1%-1%, a yellow light indicates 1.5%-2.5%, the first red light indicates 3%, and the second red light indicates >4%. Generally, a green light means the brake fluid's water content is acceptable, a yellow light means it's still okay, while a red light means the water content exceeds the limit, indicating the need for replacement. 2. You can also judge based on your driving experience. For example, if you notice the following three phenomena after braking: First, the braking force feels uneven, sometimes light and sometimes heavy. Second, when driving at speeds over 50km/h, try braking sharply; if you notice a significantly longer braking distance. Third, check if the braking force feels soft, especially after several consecutive brake applications, where this softness becomes more noticeable. If you experience any of these three situations while driving, they serve as reminders that the 'brake fluid' needs replacement.