ASE xEV Level 1 Safety Training Practice Test

Labeling guidelines for technicians on an electric vehicle are set by the Original Equipment Manufacturer because they design and know the exact components, layouts, and safety hazards of their specific vehicle. The manufacturer creates the precise labels for high-voltage systems, battery handling, emergency disconnects, braking systems, and maintenance procedures, and these labels appear on the car and in the service manuals. While government regulators establish broad safety requirements and independent standards bodies provide general guidelines, the detailed, model-specific labeling—the symbols, color codes, wording, and placement—must reflect the actual equipment in that vehicle. The vehicle owner does not determine these labels, and relying on generic standards could misrepresent the hazard or the correct procedure. Following the OEM’s labeling ensures technicians have accurate, up-to-date instructions that align with the vehicle’s design, warranty, and safety features.