10 exam-style questions with answers and explanations, straight from our 1,030-question bank. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.
The ASE A5 exam has 55 questions and runs 1 hour 15 minutes.
These 10 free ASE A5 questions are organized by exam domain, so you can see how each part of the ASE A5 Brakes blueprint is tested. Reveal the answer and explanation under each question.
A driver reports that the brake pedal slowly sinks toward the floor when held under steady pressure at a stoplight. The fluid level is normal and no external leaks are found anywhere in the system. What is the MOST LIKELY cause?
Correct answer: A - Internal seal bypass in the master cylinder
On a vehicle with a vacuum power brake booster, the pedal is pumped several times with the engine off until it feels hard and high, then held under steady pressure while the engine is started. The pedal drops slightly under the driver's foot. Technician A says this indicates a leaking master cylinder. Technician B says this indicates a ruptured booster diaphragm. Who is right?
Correct answer: D - Neither Technician A nor Technician B
A vehicle's master cylinder cap specifies DOT 4 brake fluid. Which statement about brake fluid selection for this vehicle is correct?
Correct answer: C - DOT 5.1 is glycol-based and is compatible with DOT 4 fluid
Shortly after a brake job, the right front brake drags and that wheel is far hotter than the others. When the technician opens the right front caliper bleeder screw, fluid escapes under pressure and the brake immediately releases. What is the MOST LIKELY cause?
Correct answer: D - Internal deterioration of the flexible brake hose
A vehicle with front disc and rear drum brakes noses down sharply and the front brakes grab during very light pedal application on a wet road. A defect in which component is MOST LIKELY responsible?
Correct answer: B - The metering valve
A diesel pickup equipped with a hydro-boost power brake system has a hard brake pedal and requires very high effort to stop. Technician A says a leaking vacuum booster check valve is a likely cause. Technician B says the power steering fluid level and pump output should be checked. Who is right?
Correct answer: B - Technician B only
All of the following conditions can illuminate the red BRAKE warning lamp EXCEPT:
Correct answer: D - brake pads worn to their mechanical wear indicators.
A small amount of engine oil is accidentally poured into the master cylinder reservoir, and the brakes are then applied several times before the mistake is noticed. What repair is required?
Correct answer: C - Replace all rubber hydraulic components and flush the entire system
A technician is replacing the rear brake pads on a vehicle with a motor-on-caliper electric parking brake (EPB). What must be done before the caliper piston is retracted?
Correct answer: A - Place the EPB system in service (maintenance) mode with a scan tool
A vehicle with rear duo-servo drum brakes has a low brake pedal that rises when pumped, and the rear brakes are found to be badly out of adjustment. Technician A says the self-adjusters on this design are actuated when the brakes are applied while the vehicle is backing up. Technician B says the self-adjusters are actuated each time the parking brake is applied. Who is right?
Correct answer: A - Technician A only
The ASE A5 exam also covers these domains. Drill them in the full free practice test:
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