ASE Brakes Certification Practice Exam 2025 – Complete Study Resource

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What action is often necessary if brake fluid is found to be discolored?

Add more brake fluid

Flush and replace the brake fluid

When brake fluid is found to be discolored, flushing and replacing the brake fluid is the appropriate action to take. Discolored brake fluid can indicate contamination, which may include moisture, dirt, or other impurities. These contaminants can significantly affect the performance of the braking system, leading to reduced braking efficiency or even brake failure.

Flushing the brake fluid not only removes the old, contaminated fluid but also ensures that fresh fluid is introduced into the system, helping to restore optimal braking performance. It is also important because brake fluid is hygroscopic, meaning it absorbs moisture over time; retained moisture can lower the boiling point of the fluid, contributing to brake fade during high-stress situations. Therefore, a full replacement of the brake fluid is critical for maintaining the integrity and safety of the braking system.

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Inspect the brake lines

Drive the vehicle immediately

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