What action reduces the risk of ignition from hot components after a crash?

• A. Disconnecting the battery, turning off the ignition, and avoiding sparks near fuel.
• B. Leaving the battery connected to preserve electrical systems.
• C. Starting the engine to cool components.
• D. Using a metal tool near components.

Answer: (C)

Heat and fuel vapors after a crash create a real ignition risk, so eliminating ignition sources is essential. The safest action is to cut electrical power by turning off the ignition and disconnecting the battery if it can be done safely, since this stops the fuel pump and other electrical systems from running and reduces the chance of sparks or heat igniting vapors. Starting the engine would actually introduce ignition risks from the starter motor, electrical circuits, and fuel system, possibly re-igniting or fueling a fire. Leaving the battery connected keeps power to systems that could spark, and using a metal tool near components can create sparks. In short, power down and avoid ignition sources to minimize ignition risk after a crash.