[2006 Impreza won't enter Key Fob Programming Mode]

I can get the car to beep once going through the whole 10 time +
opening and closing driver's door and three times at the end of the
"programming," but I can't get the horn to beep twice (the in between
step) when I push the key fob to program the remote.  The battery is
brand new and the + is lined up with where it's supposed to go.  When I
do push a button there is no "beep twice", but when I take the keys out
of the ignition there is a "beep three times".  The remote doesn't
work.  When I push a button the red light on the remote stays on longer
than I feel like it should.

 

Why is it not programming?

Why
will it beep the one time with the "10 turns" and three times when I
take the key out, but it won't beep twice to program my remote?

Could it be that at one time, I believe, this key was programmed to a Subaru Outback 02 instead of my Subaru Forester 03?

 

I'm using the "orange and blue" key fob for my Subaru Forester 03.

[Reprogramming a keyfob?]

I can get the car to beep once going through the whole 10 time + opening and closing driver's door and three times at the end of the "programming," but I can't get the horn to beep twice (the in between step) when I push the key fob to program the remote.  The battery is brand new and the + is lined up with where it's supposed to go.  When I do push a button there is no "beep twice", but when I take the keys out of the ignition there is a "beep three times".  The remote doesn't work.  When I push a button the red light on the remote stays on longer than I feel like it should.

 

Why is it not programming?

Why will it beep the one time with the "10 turns" and three times when I take the key out, but it won't beep twice to program my remote?

Could it be that at one time, I believe, this key was programmed to a Subaru Outback 02 instead of my Subaru Forester 03?

 

I'm using the "orange and blue" key fob for my Subaru Forester 03.