Knowledge of Electric and Hydrogen Vehicle Operation, Hazard Awareness and Safety Precautions
This element provides essential knowledge for safely working with electric, hybrid, and hydrogen vehicles in an automotive care setting. Learners will understand the operational principles of high-voltage systems and hydrogen fuel cells, recognize associated hazards such as electric shock and fire, and apply critical safety precautions including isolation procedures and appropriate use of personal protective equipment. This knowledge underpins safe routine maintenance, repair, and handling of these increasingly common vehicle types.
Assessment criteria
Topic Overview
The IMI Level 2 Technical Occupational Entry in Automotive Care (Diploma) is your gateway to a career in the motor vehicle industry. This qualification covers the essential skills and knowledge needed to perform routine maintenance, inspection, and repair tasks on light vehicles. You'll learn about vehicle systems, tools, and workplace practices, preparing you for roles such as a service technician or MOT tester. The diploma is recognised by the Institute of the Motor Industry (IMI) and aligns with industry standards, making it a solid foundation for further study or apprenticeship.
This qualification is structured around practical, hands-on learning combined with theoretical understanding. You'll cover key areas like engine systems, braking systems, steering and suspension, electrical systems, and vehicle health checks. The emphasis is on safe working practices, using diagnostic equipment, and interpreting technical data. By the end, you'll be able to carry out tasks such as oil changes, brake pad replacements, and basic electrical fault finding, all while adhering to health and safety regulations.
In the wider context of motor vehicle studies, this diploma sits at Level 2, meaning it's suitable for beginners or those with some basic knowledge. It bridges the gap between introductory courses and advanced apprenticeships or Level 3 qualifications. The automotive industry is constantly evolving with new technologies like electric vehicles, so this course also introduces you to modern diagnostic techniques and environmental considerations. Mastering these fundamentals will give you confidence and a competitive edge in the job market.
Key Concepts
Core ideas you must understand for this topic
- →Vehicle Health Checks: Systematic inspection of fluid levels, tyres, lights, brakes, and steering components to ensure roadworthiness and safety.
- →Braking Systems: Understanding hydraulic principles, disc and drum brake components, pad wear limits, and bleeding procedures.
- →Engine Systems: Four-stroke cycle, cooling and lubrication systems, belt and chain drives, and basic fault diagnosis.
- →Electrical Systems: Battery testing, starting and charging circuits, lighting, and use of multimeters for voltage, current, and resistance measurements.
- →Suspension and Steering: MacPherson strut, wishbone, anti-roll bar, steering rack, and wheel alignment principles.
Learning Objectives
What you need to know and understand
- 1. Know about electric/hybrid and hydrogen vehicle operation 2. Understand the hazards around motor vehicle high voltage electrical systems3. Know how to work safely around electric/hybrid vehicles
Assessment Criteria
Key criteria assessors look for in your portfolio
- Award credit for accurately describing the functional differences between battery electric vehicles (BEVs), hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (PHEVs), and hydrogen fuel cell vehicles (FCEVs), including energy storage and propulsion methods.
- Award credit for correctly identifying key high-voltage components (e.g., traction battery, inverter, motor/generator) and explaining their roles in vehicle operation.
- Award credit for demonstrating a systematic approach to hazard identification, such as assessing risks of electric shock, thermal runaway, and chemical exposure from damaged components.
- Award credit for outlining the correct lock-out/tag-out and isolation procedures for high-voltage systems prior to any maintenance or inspection activity.
- Award credit for specifying the required personal protective equipment (PPE) and insulated tools when working on or near high-voltage components, with justification based on voltage levels and risk assessment.
Assessment Guidance
Guidance for achieving higher grades
- 💡Always reference specific safety protocols such as the IMI TechSafe professional development framework or manufacturer guidelines when describing safe working practices.
- 💡Use correct terminology consistently: e.g., 'high-voltage' (above 60V DC) not 'high current', and 'isolation' rather than 'disconnection' for the safety process.
- 💡In written assessments, structure answers to hazard scenarios by first identifying the hazard, then the associated risk, and finally the control measure.
- 💡For practical assessments, verbalise your actions as you perform isolations and checks to demonstrate your understanding to the assessor.
- 💡When answering questions on health checks, always mention the legal requirements (e.g., minimum tread depth, brake efficiency) and reference the relevant MOT test criteria. This shows you understand real-world application.
- 💡For practical assessments, demonstrate your methodical approach: start with visual inspections, then use tools correctly, and finally record findings. Examiners award marks for safety awareness and systematic working.
- 💡In written exams, use technical terminology accurately (e.g., 'calliper' not 'caliper', 'disc' not 'disk') and explain the 'why' behind procedures, not just the 'how'. This distinguishes higher-level answers.
Common Mistakes
Common errors to avoid in your coursework
- Assuming that hybrid vehicles are completely safe once the engine is off, without recognising that the high-voltage battery may still be live.
- Confusing the roles of the auxiliary 12V battery and the high-voltage traction battery, leading to misunderstanding of which systems remain energised.
- Using standard uninsulated tools for high-voltage tasks, or wearing inappropriate PPE, increasing the risk of electric shock.
- Neglecting to perform a dead-verification test with a calibrated multimeter after isolation, relying only on visual or dashboard indicators.
- Misidentifying hydrogen fuel cell vehicles as purely electric with no high-voltage hazards, ignoring the high-voltage battery present in most FCEVs.
- Misconception: 'You can reuse brake fluid that has been drained.' Correction: Brake fluid is hygroscopic and absorbs moisture, which lowers its boiling point and can cause brake fade. Always use fresh, sealed fluid.
- Misconception: 'Tyre tread depth is the only thing that matters.' Correction: While tread depth (minimum 1.6mm) is crucial, tyre age, sidewall cracks, and uneven wear patterns also affect safety and performance.
- Misconception: 'Jump starting a car is always safe.' Correction: Modern vehicles have sensitive electronics. Incorrect jump starting (e.g., reversing polarity) can damage ECUs. Always follow manufacturer guidelines.
Frequently Asked Questions
Common questions students ask about this topic
Pass / Merit / Distinction Evidence Checklist
How your portfolio evidence is graded for THE INSTITUTE OF THE MOTOR INDUSTRY Knowledge of Electric and Hydrogen Vehicle Operation, Hazard Awareness and Safety Precautions
Every vocational unit is marked against named criteria rather than an exam percentage. Your tutor's brief lists the exact codes for this unit — here is what each band is asking you to do.
Demonstrate baseline knowledge, accurate terminology, and core practical application.
Provide detailed analysis, structured explanations, and clear workplace reasoning.
Deliver thorough evaluation, original problem solving, and fully justified recommendations.
Before You Start
Prior knowledge that will help with this topic
- •Basic understanding of vehicle components (e.g., wheels, engine, brakes) from everyday experience or introductory courses.
- •Familiarity with hand tools (spanners, screwdrivers, jacks) and basic workshop safety (fire extinguishers, PPE).
- •Elementary maths and science (e.g., measuring, interpreting graphs, understanding forces) to grasp technical concepts.
Coursework AI Review
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Key Terminology
Essential terms to know
- 1. Know about electric/hybrid and hydrogen vehicle operation 2. Understand the hazards around motor vehicle high voltage electrical systems3. Know how to work safely around electric/hybrid vehicles
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