If your Marquis has fuel delivery problems, the issue isn't a reset button. Here's what you should do instead:
1. Check the fuel level: Make sure the car actually has fuel. This sounds obvious, but an empty tank is the most common reason for a car not starting.
2. Listen for the fuel pump: When you turn the ignition key to the "ON" position (but don't crank the engine), you should hear a brief humming sound from the fuel pump in the back of the car. If you don't hear it, the pump itself could be faulty, or there might be a problem with its electrical circuit.
3. Check the fuel pump relay: The fuel pump is controlled by a relay. A faulty relay can prevent the pump from working. You'll need to consult your car's repair manual (or a reliable online resource like a forum dedicated to Mercury Marquis) to find the location and swap the relay with a known good one to test it.
4. Check the fuel pump fuse: Similar to the relay, a blown fuse will prevent the pump from operating. Check your owner's manual or fuse box diagram to locate the appropriate fuse.
5. Consider the fuel pump inertia switch: Some cars have an inertia switch, a safety device that cuts power to the fuel pump in a collision. It's usually located under the dashboard or in the trunk. Check if it's tripped and reset it if needed. (Again, your owner's manual is your best guide.)
6. Have it professionally diagnosed: If none of these steps solve the problem, your fuel pump or related components might require professional diagnosis and repair. Taking it to a mechanic is the safest course of action to prevent further damage.
If you're seeing a little red button somewhere in the car that you think *might* be related, please describe its location more precisely. A picture would be incredibly helpful. But it's highly unlikely that this button is a fuel pump reset.
