For future reference: When your AWD Subaru Legacy or Outback variant of a Legacy starts to make odd noises that sound like differing video game tones that you absolutely can't pinpoint the source of the noise that has turned your beloved Subaru into a flying saucer......you'll have about 5,000 miles before finding yourself on the interstate driving along at 70 mph when for a brief few seconds you realize the flying saucer just started making a far different noise followed by what you THOUGHT must have been the encounter with an IED only to find out the carrier bearing on the driveshaft from the front to the rear finally had enough of entertaining you musically, and now wants to greet you with the hammer of Thor in rapid succession from the tunnel between the front seats. And it's a full component replacement for the complete driveshaft.
As for
everything Subaru that you'd like to know, such as the keyfob programming, cars101.com is THE reference for Subarus!