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 collision, electrical contacts in inertia switch will open. This will automatically shut off fuel pump. Fuel pump will shut off even if engine does not stop running. Engine will stop shortly due to lack of fuel. It will not be possible to restart engine until inertia switch is manually reset. To reset inertia switch, depress button on top of switch.
Inertia switch is located in trunk on left hinge support on Town Car, Crown Victoria and Grand Marquis sedan models. On Crown Victoria and Grand Marquis station wagon models, switch is located in left rear side storage compartment. It is located near left taillight on 3-door Mustang and Capri models. On Taurus and Sable sedan models, switch is located behind trim panel in left side of trunk. On Taurus and Sable station wagon models, switch is located behind access door in right rear cargo area.
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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.