When servicing or approaching high-voltage components on hybrid/electric emergency vehicles, what safety precautions must be observed?

• A. Turn off ignition only.
• B. No safety precautions.
• C. De-energize high-voltage systems via service disconnect, follow manufacturer isolation steps, wear PPE rated for HV, maintain a safe perimeter, use insulated tools, and verify absence of voltage before work.
• D. Only use non-insulated tools.

Answer: (C)