Brake system diagnosis should begin with a road test. Before taking the vehicle on any public roads, check the:

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Multiple Choice

Brake system diagnosis should begin with a road test. Before taking the vehicle on any public roads, check the:

Before taking the vehicle on public roads, ensure the brake system is safely ready by checking the master cylinder fluid level and its condition, the brake pedal travel and how it feels, and performing a few controlled, very low-speed stops. The fluid level shows whether there’s a leak or a fluid breakdown, and contamination can compromise braking performance. Pedal travel and feel reveal the hydraulic condition—spongy,软, or sinking pedals can indicate air in the lines, worn seals, or other issues. A few low-speed stops let you observe how the brakes respond in real life: whether they engage smoothly, require excessive effort, pull to one side, or fade, all of which point to specific problems that need addressing before a road test. Tire condition matters for overall safety but doesn’t diagnose the brake system itself. Rotor warp is something you’d assess after confirming the hydraulic system is sound, and parking brake function is important but not sufficient alone for a safe initial road test.

Before taking the vehicle on public roads, ensure the brake system is safely ready by checking the master cylinder fluid level and its condition, the brake pedal travel and how it feels, and performing a few controlled, very low-speed stops. The fluid level shows whether there’s a leak or a fluid breakdown, and contamination can compromise braking performance. Pedal travel and feel reveal the hydraulic condition—spongy,软, or sinking pedals can indicate air in the lines, worn seals, or other issues. A few low-speed stops let you observe how the brakes respond in real life: whether they engage smoothly, require excessive effort, pull to one side, or fade, all of which point to specific problems that need addressing before a road test.

Tire condition matters for overall safety but doesn’t diagnose the brake system itself. Rotor warp is something you’d assess after confirming the hydraulic system is sound, and parking brake function is important but not sufficient alone for a safe initial road test.

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