It comes programmed with a default TMCC Train setting of 9, engine is #1 and tender #2. I have stuck with that; haven’t tried double heading mine as the older one is in the shops being slowly attended to (by me).
What Ted describes sounds like a software issue with the smoke units going back to slow speed operation even though the sound is at the higher speed setting. That’s why I thought of reset first. If all else fails most of the internal electronic components for these models were still available from Lionel last time I looked.
