What is a sign of a potential issue with the brake system during inspection?

Squeaking or grinding noises when applying brakes are clear indicators of potential issues within the brake system. These sounds often suggest that the brake pads may be worn down to the metal, which can lead to damage to the rotors or decreased braking efficiency. If brake pads are not replaced in a timely manner, it could result in more extensive repairs or even complete brake failure, posing a serious safety risk. Thus, during an inspection, the presence of these sounds should prompt further investigation into the condition of the brake components to ensure they are functioning properly.

The other options, while they may suggest different mechanical problems, are not directly indicative of a brake system issue. For example, dashboard warning lights could relate to various systems in the vehicle, and vibrations in the steering wheel typically point to issues with wheel alignment or suspension, rather than the brakes. Engine hiccups during acceleration generally indicate problems with the engine itself or fuel system, and do not generally affect brake performance directly. Therefore, while all these symptoms may require attention, only the squeaking or grinding noises specifically signal potential brake problems.