Can you feel the brake pedal pulsing or your brakes squealing when you press the brake pedal on your Ford Focus? If the answer is yes, then your brake pads are probably worn down and need to be replaced. Modern auto brake systems have come a long way, and no matter whether your Focus has an older, mechanically-operated brake drum and shoe system or a newer computer-controlled ABS system, you'll probably need to replace most of your brake components.