I have a 2005 Forester and have the same problem since replacing the battery in the key.,the key worked remotely, has one button only press once to open car and one more to lock the car, there is no led to light up and show that it is working. It does not come with a separate key fob. The 2005 car manual does not show this key. None of the info that I can find on line covers this key either. Has anyone on this forum got experience of this type of because I am totally beaten by it. And it doesn't come with this key pad that the manual talks about but does not illustrate. Any advice would be much appreciated as I am completely flummoxed.