I recently bought a car with Alpine alarm installed. Which model it is
I don't know. It came with two remotes but only one was working. I
opened te broken one, washed it , do some soldering and it started to
lit the small red led on it. But it still doesn't arm/disarm. If I put
the chip inside the remote to that working one it will work. Is there
still something wrong with that remote or is there something other
than that removable chip that tells to the alarm which remote to work
with?

Jyrki,
Finland