LCS sensor will not program via the Cab2 remote

"The green LED light will stay illuminated until I completely unplug/re-plug everything including my legacy base and then it will go off"

The correct behavior of the sensor track is to light both LEDs for a second or two on initial powerup (plugging in the LCS power jack) and then go out.   You may have a defective sensor track.

Do the ASC2s behave normally?

Is the Legacy Base firmware v1.52 or higher?  You mention the CAB2 rev level but the base requires a separate update.

The ASC2’s behave as the sensortrack does. On initial plug in, the mods will stay illuminated as well until I reset and unplug/replug the system a couple of different times. When I finally get them to the program process they don’t accept the commands. I have 3 of them and all 3 act the same even with different PDI cables. The base and the remote are both running 1.52. I know the instructions say 1.52 or higher, but is it possible that these accessories perform better on the newest version? Lionel has also recommended changing the channel on the base and remote but the accessories do not respond on higher channels and act as they were on lower channels. 

I would plug one LCS component in at a time using just the LCS power supply. See if any of the, work by themselves. If not you may have a Legacy Base issue.  Is anything else plugged into the serial port of the Legacy Base?

Hello, 

I have tried a single LCS device previously in the beginning because I was thinking along those same lines. All 4 of my LCS devices are acting in the same way. Is it possible it is a bad DB9 cable? There is nothing else connected to the serial port currently just the DB9 cable to the LCS device. I have the black modules coming in tomorrow to attempt to just update the software to 1.60. 

Have been playing with my LCS stack and watching the sensor track behavior ... If communications with the Legacy Base have failed, the sensor track green light stays on.  Parts that may have failed:

Legacy Base serial port, or the logic that receives/transmits commands via the serial port.

PDI power adapter's serial cable between the LCS devices and the Legacy Base.