What should be done if the brake pedal sinks to the floor?

When the brake pedal sinks to the floor, it typically indicates a problem within the brake system, often associated with the hydraulic components. Inspecting for a hydraulic leak is crucial because such leaks can lead to a loss of brake fluid, which directly impacts braking performance. If there is a leak in the brake lines, master cylinder, or brake calipers, it can cause the brake pedal to feel soft or to sink all the way to the floor when pressed.

Addressing hydraulic leaks is essential for the safe operation of the vehicle. If a leak is found, it needs to be repaired, and the brake fluid level should be replenished before testing the brakes again.

Other options, such as adjusting the brake pedal height or simply checking the fluid level, may not resolve the fundamental issue causing the pedal to sink. Replacing brake pads immediately would be inappropriate as this does not directly address the hydraulic problem that is causing the brake pedal issue.