Red Seal Automotive Service Technician (310S) Official Timed Mock Exam Simulator
Prepare for your Certificate of Qualification (C of Q) exam with our authentic 125-question 4-hour simulation. Built precisely to the National Occupational Standard blueprint with 70% pass threshold verification.
📝 125 Exam Questions
⏱️ 4 Hours (240 Mins)
🎯 70.0% Pass Standard
📊 MWA Diagnostic Scorecard
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2026 RSOS Blueprint Distribution for Automotive Service Technician (310S)
Major Work Activity (MWA)
Target Questions
Exam Weight
MWA A: Occupational Skills & Diagnostics (진단기·안전)
13 Qs
10%
MWA B: Engine Systems (엔진기구·연료분사·배출가스)
25 Qs
20%
MWA C: Electrical & Electronics (배터리·시동·센서·CAN)
27 Qs
22%
MWA D: Drivetrain (변속기·클러치·디퍼렌셜·4WD)
22 Qs
18%
MWA E: Steering, Suspension & Brakes (조향·현가·ABS/ESP)
25 Qs
20%
MWA F: HVAC & Restraints (공조에어컨·에어백·ADAS)
13 Qs
10%
Total Red Seal Exam Length
125 Questions
100%
Sample Diagnostic Practice Questions
Try these sample questions from our Automotive Service Technician (310S) question bank. Select an answer to see instant feedback and explanation.
Q1. A journeyperson automotive technician is consulting a Safety Data Sheet (SDS) for a new transmission fluid additive before handling it. In which section of the SDS would the technician find specific information regarding the product's flash point, autoignition temperature, and upper/lower flammability limits?
Worked Explanation: Section 9 of an SDS, 'Physical and Chemical Properties,' is where a technician would find detailed information about a substance's inherent physical and chemical characteristics, including its flash point, autoignition temperature, and flammability limits. Section 2 describes the *types* of hazards, Section 5 outlines *measures* to fight fires involving the product, and Section 14 relates to safe transportation.
Q2. A customer subscribed to a telematics service reports that remote functions (e.g., remote start, door unlock/lock via smartphone app) are no longer working. The SOS emergency call button, however, still connects to the service provider, and hands-free cellular calls through the system function normally. Which of the following is the MOST probable cause of the remote function failure?
Worked Explanation: If the SOS emergency call button and hands-free cellular calls are working, it indicates that the Telematics Control Unit (TCU) has functional cellular communication with the service provider's network and can transmit voice data. Remote functions, however, often rely on specific data services that might be part of a separate subscription package or could be temporarily affected by issues on the telematics service provider's servers. An expired subscription or a temporary service outage is the most probable cause when basic cellular communication remains active.
Q3. A vehicle presents with a 'feathered' tire wear pattern across the treads of the front tires. This pattern is characterized by the tread blocks being smooth on one side and sharp on the other, when felt across the tread. All other alignment angles (camber, caster) are within specification. What alignment angle is the MOST likely cause of this feathering wear?
Worked Explanation: Tire feathering, where tread blocks are worn smooth on one side and sharp on the other, is a classic symptom of incorrect toe settings, either excessive toe-in or toe-out. This condition causes the tires to constantly scrub sideways as they roll, leading to the characteristic feathered pattern. While other alignment issues can cause tire wear, feathering is uniquely indicative of a toe problem.