The blower motor is shot, if it doesnt come out of the vents, feet, windshield, anywhere, its the blower motor, take it in and get it fixed before winter comes, your heated leather seats wont keep you warm enough bud.
you have a bad heater core
bypass valve not opening
You might need a new thermostat or heater core.
Check your coolant. Is it thick and gunky?
my heater fan in front of my 2004 chevy venture van wont work
If there are no blown fuses in your Lincoln ls, then there could be a short in the wires causing your power locks to not work.
Lighting control module
replace the turn signal flasher fuse.
i replaced the fuel pump and now my theft system wont work
Low refrigerant charge? Bad compressor?
did your heater switch go out all of a sudden or did some work like high work and low not work? if some worked your blower resister is most likely bad under your glove box
A common problem is that the heater resistor/ circuit board is defective and need to be replaced. The main symptom is that the heater fan with not run on the three low speeds but will run on high.