2000 Mercury Grand Marquis service reset

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Mercury Grand Marquis 2000  Owners Manuals Remember to turn the ignition OFF when refueling your vehicle.
Otherwise, the display will not show the addition of fuel for a few miles.
At least four gallons of fuel must be added for the fuel gauge

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Mercury Grand Marquis 2000  Owners Manuals If the vehicles powertrain system or its battery has just been serviced,
the on-board diagnostics system is reset to a ªnot ready for I/M testº
condition. To ready the on-board diagnostics system f