California DMV Permit Test (Class C)Vehicle Operation and MaintenanceHard
A motorist is preparing for a long drive and notices that their vehicle's brake pedal feels spongy and goes nearly to the floor before engaging. What is the most appropriate action to take before starting the journey?
- APump the brake pedal several times to build pressure.
- BHave the brake system inspected and repaired by a qualified mechanic.
- CAdd more brake fluid and re-test the pedal feel.
- DDrive cautiously and apply the parking brake for additional stopping power if needed.
Show answer & explanationAnswer & explanation
Correct answer: B. Have the brake system inspected and repaired by a qualified mechanic.
A spongy brake pedal indicates a serious issue within the hydraulic brake system, such as air in the lines, a fluid leak, or a failing master cylinder. These issues compromise braking effectiveness and safety, requiring professional diagnosis and repair.
Why the other options are wrong
- A. Pumping the pedal might temporarily build some pressure but does not resolve the underlying problem and is not a safe long-term solution.
- C. Adding fluid without addressing a leak or other system issue is a temporary fix and does not guarantee safe braking performance.
- D. Driving with compromised brakes is extremely dangerous and could lead to an accident; the parking brake is not designed for primary stopping power during driving.
Brake System Malfunction
A spongy brake pedal indicates a potential failure in the hydraulic brake system, which is critical for vehicle safety and requires immediate professional attention.
- Spongy pedal often means air in lines or fluid leak.
- Compromises stopping power and driver control.
- Requires professional inspection and repair.
Memory trick: Spongy Brakes signal danger, seek a Pro's repair.