* Disconnecting the fuel pump relay: This is the most reliable method to quickly stop fuel delivery. The relay is usually located in the underhood fuse box. You'll need to consult your owner's manual or a wiring diagram to identify the correct relay.
* Disconnecting the fuel pump wiring: Similar to the relay method, disconnecting the wires leading to the fuel pump will also stop fuel flow. This requires accessing the pump, likely located in the fuel tank, which isn't a quick process.
Important Considerations:
* Safety: Always disconnect the negative battery cable as the first step in any significant electrical work to prevent sparks and shocks.
* Owner's Manual: Your owner's manual is the best resource for finding the fuse box location and relay diagrams.
* Professional Assistance: If you're uncomfortable working with automotive electrical systems, seek professional assistance.
In short, there's no single "fuel cutoff switch" to flip. You'll have to interrupt the fuel supply through the electric system by dealing with the fuel pump relay or wiring.