Passkey3 light will not come on?

What is your question?

Passkey light on car starts light goes out car stays running. This is good for at least 3 runs that day. Next day passkey light not on. Relearn procedure doesnot work after multiple attempts. After a while of tinkering, taking out fuse/putting back in, disconnect battery, nothing. Buuut then for some reason the light comes back on. I changed the theft control module, thinking that was the problem but the same thing started again.