Yep we probably were talking about two different, but similiar things
As for the radio codes: I swapped out the hunk of junk last year(best thing I have done to date). You will need your code. It only takes about 10 or 15 minutes, but I always let it off for an hour or even overnight.
Let me reiterate this. This operation is almost free and almost foolproof. As long as you don't short out the sensor when you take it out, no harm can come from this and it really needs to be done from time to time, Heck I would do it Yearly or Bi-yearly.