at roof
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.
The window washer pump should be located in the bottom of the washer reservoir for the 1998 Sable. The reservoir may have to be removed to replace it.
Remove the wiring harness from the back of your 1993 Mercury Villager windshield washer motor pump. Remove the windshield washer pump hoses. Remove the windshield washer pump retaining bolts. Reverse the process to install your new windshield washer motor pump.
The washer pump has probably failed or is plugged with dirt.
Take off the washer fluid bottle.
On ours, it is behind an access panel in front of the RH tire.
The washer fluid for the liftgate is supplied by the same reservoir as the windshield
I believe you have to remove the battery, battery tray and then the washer fluid reservoir, now you can remove the pump from the reservoir.
Your washer fluid is low, or the indicator is stuck. The washer bottle would have to be removed and checked.