MTH DCS "Engine Not On Track" Message??

If they have weak batteries in them this will happen  Try deleting them from the remote and reading them

WAS THE TRANSFORMER ON?  CHECK THE BATTERIES IN THE DCS HAND HELD UNIT

Maybe Barry B. himself will weigh in but I have found that a this is usually the result of the batteries being drained or a dirty section of track. Try placing the engine directly on a terminal (power supply) section of track and let it sit there for a few minutes before trying to address it. If the battery has completely drained you may need to delete it from the DCS memory and add it again.

Charge the Batteries first, Then delete and add engines. I just went through this with a rebuild. Turned out it was a bad battery. Also since you will have the shell off, make sure all the screws are tight in the trucks 3r pick up and ground. If they are loose most likely the battery is not charging and you may be getting intermittent power.  Easy way to check see if the third rail pick up moves when you touch it. Also put the engines on a curve and try it, If your able to at least turn them on that's another sign that you need to make sure the screws are tight and you need to charge or replace with a fully charge battery.  

Doug

Thanks for all the tips. I will try them one by one. Seems like the consensus says the batteries in the diesels are bad.

Buy a BCR and you won't have a low battery problem again.