How do you turn on fuel shut off safety switch back on in a ford focus saloon?

To reset the fuel shut-off safety switch in a Ford Focus saloon, locate the switch, which is typically found in the trunk or near the driver's side footwell. Press the reset button on the switch until you hear a click. After resetting, turn the ignition key to the "On" position without starting the engine to allow the fuel system to pressurize. Finally, start the engine to ensure the system is functioning properly.