Yes, they all come with heating and air conditioning.
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2002/2003 subaru outback does not have one!!!!!!!!
http://techinfo.subaru.com/html/downloadFree.jsp?doc_id=139054
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.
I have not tried to install a seat heater. Assuming that you have a seat with heater that you wish to use, Subaru tends to not include the wiring unless that option was ordered from the factory. You will need to install all wiring up to the fuse panel.
Since they no longer make a 2001 Subaru Outback, it depends on whether yours was equipped with one. It was an option so if you are asking if every one had a block heater, the answer is "no".
could be the blower motor, a fuse, or a bad wire.
In Subarus the temp control for the heater does not control the coolant flow, just airflow past the heater core. If you get no heat, there is no coolant in the heater core -- either there is no coolant or it is not circulating.
See "Fuses and Circuits" on page 6 in chapter 12 "Specifications" of your "OWNER'S MANUAL".....
To install a block heater on a 1999 Subaru Outback, first ensure the engine is cool and disconnect the battery. Locate the engine block's freeze plug, usually found on the side of the engine, and remove it using a socket wrench. Then, insert the block heater into the hole, securing it properly, and connect the power cord to an electrical outlet. Finally, reconnect the battery and test the heater by plugging it in for a few hours before starting the vehicle.
To bleed the heater system on a Subaru Outback 3.0, start by ensuring the engine is cool, then remove the radiator cap. Next, run the engine with the heater set to maximum heat and the fan on, allowing air to escape from the system. Monitor the coolant level in the reservoir and add coolant as necessary to maintain the proper level. Finally, check for heat in the cabin to confirm that the system is properly bled.
replace heater core. replace fan.
The light in the switch can not be changed, the whole switch would need to be replaced.