Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Inertia Switch
- In event of a collision, electrical contacts in inertia switch open and fuel pump automatically shuts off. Fuel pump will shut off even if engine does not stop running. Engine will stop due to lack of fuel.CAUTION: DO NOT reset inertia switch until fuel system has been inspected for leaks.
- It is not possible to restart engine until inertia switch is manually reset. To reset inertia switch, depress button on switch.
On Crown Victoria and Grand Marquis station wagon models, switch is located in left rear side storage compartment.
On RWD vehicles (except wagons), inertia switch is located in trunk, on left hinge support or behind trim panel.
On Sable and Taurus, inertia switch is located on left side of trunk (except station wagon).
On Taurus and Sable station wagon models, switch is located behind access door in right rear cargo area.
On all other vehicles, inertia switch is located in trunk, on left hinge support or behind trim panel.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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