Engine adds, then not found

    Don't use the SHUT DOWN button on the remote to check the battery as the sounds will always continue until the engine shuts down. Let the engine run with the sounds and cut off the 'track power' and see if the sounds continue for at least 7 seconds.

Is there a different TIU on the layout...  If so you have to associate the layout TIU and the engine...  Try doing a READ command after placing the engine on the layout and see if it comes up in the active list...

Only 1 TIU. I disconnected it from the layout and connected it to the program track, then reconnected it to the layout. Hitting read does nothing, its not finding it. When you turn on the power, it "clicks" like it should, but its not being recognized unless you add it.

I've had it charging on the track for an hour now and its still not working, so I'll just leave it for another hour or 2 to see if that gets it going. If not, I guess I'll have to give MTH a call tomorrow.

An hour is no way near good enough if the battery was near dead. More like 12-16 hours to charge it fully. Was this brand new or a purchase from someone? Just trying to rule out other areas like a possible BCR installed

Brand new... it was "in stock at mth", basically just middlemanned through the dealer to my doorstep.

 Which version of DCS are you running in both TIU and remote? How's the track signal strength? How did it do when you cut the power?

 I don't think the polarity switch matters when run in three rail.

Either let the battery charge sufficiently (12 hours or so) or just replace it. The engine's fine.