Want this question answered?
For the heater core. All cars have them.
With difficulty. Tried to remove the one in my 1997 and found that you really do have to remove the entire dash to access it. If you have it out already, try to get your hands on a new heater box, saves the hassle.
Heater inlet hose on a 99 subaru legacy is on the passenger side coming out of the fire wall. One of only 2 hoses coming out of the fire wall.
failed Heater core
Usually take the car to the nearest Subaru dealer and have then fix it. They invented it, they should fix it.
The rear defroster (demister) on a Subaru Legacy is built into the window. The lines going across the back window are actually the defrosters. If the vehicle is equipped with a rear wiper, the switch for this should be located below the radio and heater controls.
take the 2 screws out of the bottom of the clove box and its right there
replace heater core. replace fan.
check your thermostat, if that isn't it you might need a new heater core. had one put in my f150 for about $150. With my car, it was Heater matrix clogged with radiator sealant. The workshop cleaned it and it's start working fine!
Some will, most wont. The A/C button should, but the others you'll need to learn in the light and remember for night driving.
2002/2003 subaru outback does not have one!!!!!!!!
The most common fault with any blower motors not working is usally the resistor switch which is located in the heater box its self. Richard @ Allander motors