Can't find an MTH Engine on DCS Remote 'Engine Not On Track' when on track

I'd first put it on 3 feet of track on a bench and connect a TIU channel just to that track and see if you can find it.  There are many reasons why finding it on the layout might fail, time to start eliminating variables.

I’m assuming you have more than one DCS engine if you have the system. Do your other engines respond and start up ?  If they do. Do a track signal test.

Take every other locomotive off of the track.  Sometimes multiple DCS or TMCC/Legacy locomotives being on the track will cause weird problems.  Also, if there are any accessory cars on the tracks, take those off too and try again.  You have moved it already.  Also try to unseat and re-seat the wireless drawbar.  

HTH.  MTH makes great locomotives but DCS can be a pain in the rear.  Reminds me of the old Windows 95.  Works pretty well most of the time, and once in a while could be a real pain.

Good luck.

Okay, so: Tried it again with no other engines on the track. Still nothing. Tried it on a test track, nada. Track signal test run off another engine showed great signal in spots, poor in others. I am of course attempting to program the Berkshire back in on the strongest signal zones. (This is a new layout, I am still sorting the signal issue)

Another oddity, may or may not be related? All the Lionel Legacy engines on the track lost all sound function all at once earlier (Still responded to all other commands and functions). Regained it with a reboot.

I usually can add an engine from anywhere on the layout. But I have noticed on some engines. As the search is on to find the engine to add. Sometimes you have to go by the saying. Wait for it. Many times I get the No Engine On Track. Rather than exit or shut the power down. Try waiting a bit. Eventually mine always add. I’m guessing that message must come on after a certain amount of time. But it seems the system keeps looking.

Still if you follow John’s advice in creating a programming track. With just a piece of track and no other tracks powered on. It should add. Just make sure unless you have an auxiliary  power supply. That Fixed One has power going in if your using another channel for the programming track.

Make sure the DCS/DCC switch did not get moved to DCC.  Since it runs in conventional, on a test track as stated true to add it, but delete the engine from the remote first.  If that does not work, go it engine setting and scroll down to recover engine and try that.

Maybe what ever glitch your layout had cause engine ID to go out of range.  G

Recover engine worked - thanks for the input! About 13 years of having DCS, and Ive never once used that functuon or needed to. Helped a lot, thanks again.