ASE A5 Study Guide 2026
Everything you need to pass the ASE A5 exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
ASE A5 exam key facts
📋 ASE A5 Exam Format at a Glance
📚 ASE A5 Topics to Study (6)
✍️ Sample ASE A5 Questions & Answers
1. After installing a new front brake hose, what check should be made before returning the vehicle to service?
Steering and suspension movement must not stretch, kink or rub the hose. Turning lock to lock confirms there is enough slack and clearance.
2. A brake pushrod gauge is used when installing a master cylinder on a power booster. What does the technician compare with this tool?
The gauge checks that the booster pushrod length matches the master cylinder piston depth so the piston ends up with the correct clearance.
3. What causes the red brake warning lamp to light through a pressure differential switch?
If one circuit loses pressure, the higher pressure in the other circuit pushes the differential piston toward the low-pressure side. The piston closes the switch and lights the warning lamp.
4. A vehicle with a conventional dual-diagonal split hydraulic system is being bled, and the manufacturer gives no special sequence. Which wheel should be bled first?
Bleeding normally starts at the wheel with the longest line run from the master cylinder, which is usually the right rear. Air is then pushed out of the longest circuits first.
5. On a vehicle with ABS, air remains in the hydraulic control unit after the wheel circuits have been conventionally bled, and the pedal is still soft. What is the best next step?
Many ABS units hold air in internal passages that conventional bleeding cannot reach. A scan tool bleed cycles the valves and pump so the air can be pushed out.
6. A technician is told that a customer previously topped off the reservoir of a vehicle with DOT 5 silicone fluid. The system is now to be serviced with DOT 3. What is the proper procedure?
Silicone DOT 5 does not mix with glycol-based DOT 3, so the system must be completely flushed. Seals that were exposed to the incompatible fluid may need replacement.
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- A timed, full-length ASE A5 mock exam — 55 questions in 75 minutes with a 70% pass mark, modeled on the official exam's question count and time limit, followed by a score report broken down by exam domain.
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How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy
Sources & references
Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy
- ase.com — Eligibility, registration deadline, test dates, test delivery, retake policy, score release, score validity · verified Nov 2026