Which part of an electric vehicle typically carries the high-voltage warning label?

• A. 12-volt auxiliary battery
• B. Cargo area
• C. Traction battery
• D. Windshield wiper motor

Answer: (C)

High-voltage warning labels are placed on the part that actually carries or stores the high voltage in the vehicle. In an electric vehicle, that energy reservoir is the traction battery—the large battery pack that powers the motor and power electronics. Because it holds the high voltage, it’s the component most likely to display the warning to alert anyone working near it to take proper safety precautions.

The 12-volt auxiliary battery runs at a much lower voltage and powers basic accessories, not the drivetrain, so it doesn’t typically bear high-voltage warnings. The cargo area and the windshield wiper motor aren’t high-voltage components in most EVs, so they don’t carry those labels either.