Inertia Fuel Shutoff (IFS) Switch - Reset Instructions

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2015 Lincoln Navigator, 2015 Lincoln MKZ, 2015 Lincoln MKX, 2015 Lincoln MKT, and 2015 Lincoln MKS. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: IF YOU SEE OR SMELL GASOLINE AT ANY TIME OTHER THAN DURING FUELING, DO NOT RESET THE INERTIA FUEL SHUTOFF (IFS) SWITCH. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.

Key in OFF position.
Check for fuel leaks in the engine compartment.
If no leak is present, reset the IFS switch by pushing the reset button on the top of the switch. Refer to the Owner's Literature, Roadside Emergencies for the location of the IFS switch.
In the closed position, the button can be pressed an additional 1.57 mm (1/16 in) against a spring.
Key ON, engine OFF.
Key in OFF position.
Key ON, engine OFF.
Key in OFF position.
Check for leaking fuel.

Fig 1: Identifying Fuel Pump (FP) Connector
Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
E-Series, Expedition, F-150, Mustang, Navigator, Transit	A	4 3	FPPWR FPRTN
F-650/F-750, F-Series Super Duty, Motorhome/Stripped Chassis/Step Van	B	4 3	FPPWR FPRTN
All other vehicles	C	5 4	FPPWR FPRTN