ASE Brakes Certification Practice Exam 2026 – Complete Study Resource

The question asks about the critical components to check in the event of experiencing brake instability. When diagnosing brake system issues, all listed components play important roles in overall brake performance.

Brake lines should be examined because they are responsible for transporting brake fluid from the master cylinder to the calipers. If the lines are damaged or leaking, it can lead to a loss of hydraulic pressure, which directly affects braking capability and can cause instability.

Caliper piston seals are essential for maintaining pressure within the caliper. If these seals are worn or damaged, it can lead to fluid leaks or variations in clamping force on the brake pads, interfering with consistent braking pressure and causing instability.

Disc rotors are also critical components, as they provide the surface for the brake pads to create friction. Warped or unevenly worn rotors can lead to pulsation, reduced contact surface, and inconsistent braking action, all of which can contribute to feelings of brake instability.

Since all these components have significant impacts on brake performance and stability, it is crucial to check each of them when experiencing any instability in the braking system. This holistic approach ensures that no potential issue is overlooked, allowing for a comprehensive diagnosis and resolution of the braking problem. Therefore, considering the importance of each component, the