The washer pump has probably failed or is plugged with dirt.
Take off the washer fluid bottle.
The washer fluid for the rear liftgate is supplied by the same reservoir as the windshield in a 2000 Mercury Villager
On a 2000 Mercury Villager : The washer fluid for the rear liftgate is supplied by the same reservoir as the windshield ( located in the engine compartment )
The 2001 Villager washer fluid level sensor is inside of the washer fluid reservoir. The sensor can be access through the bottom of the washer fluid reservoir.
Your washer fluid is low, or the indicator is stuck. The washer bottle would have to be removed and checked.
undo the hoses and should only be a few screws to loosen to take it off, should be very easy
In the 1997 Mercury Villager, the Transmission fluid dipstick is located on the driver's side of the engine just in front of and below the master cylinder/brake fluid check. The 97 Villager has a bulbous knob on top with no indication that it is the Transmission fluid.
The washer fluid for the liftgate is supplied by the same reservoir as the windshield
Just normal DOT3 brake fluid.
Transmission fluid is added through the dipstick tube.
Transmission fluid is added through the dipstick tube.
Don't ever !!!!!