We bought our Subaru in Hudson in 2010. Received 2 keys and a valet key. We've used the 2 keys for 10 years, but the valet key stayed stored in a box on the shelf until last week.
We needed to give a key to someone who would be moving our car. Called parts dept to get a new key made, and they told us "USE YOUR VALET KEY", it came with the car! Well, we found it and it didn't work. [it actually set the alarm as we put it into the door, and then it turned off the car when we tried it in the ignition....and turned off the car so that our other key couldn't be used!]
Managed to get the car to Granite Subaru, where they reprogrammed the valet key and checked our other keys, and all is well!! We now have original 3 keys that work!! Thanks, Granite State.