If your 1999 Mercury Villager won't start and you suspect a fuel pump problem, here's what to consider:
* Fuel Pump Relay: This is a more likely point of failure that might be mistaken for a reset switch. The relay is an electrical component that switches power to the fuel pump. It can fail and need replacement. The location of the fuel pump relay varies slightly by year and trim level, so consult your owner's manual or an online repair manual specific to your vehicle's year and model to locate it. You can try swapping the relay with a known good one from another circuit (if you're comfortable with this level of DIY) to see if that solves the problem.
* Fuel Pump Fuse: Check the fuse related to the fuel pump. Again, your owner's manual will show you the fuse box location and which fuse is for the fuel pump.
* Inertia Switch: Some vehicles have an inertia switch that cuts power to the fuel pump in the event of a collision. This switch often needs to be manually reset. Consult your owner's manual for its location; it's usually under the dash or in the engine compartment.
* Fuel Pump Itself: The fuel pump may be failing, requiring replacement. This is a more complex repair often requiring specialized tools.
* Other Electrical Issues: A no-start condition isn't *always* a fuel pump problem. Other electrical components like the ignition system, crankshaft position sensor, or computer module could be at fault. A diagnostic scan tool is recommended to accurately pinpoint electrical issues.
In short: Forget about finding a "reset switch". Focus on checking the fuses, relay, and inertia switch. If the problem persists, professional diagnostics are needed. Attempting repairs beyond your skill level could be dangerous.
