I have a VXDiag VCX Nano Ford for IDS interface and I tested 2 versions of IDS (118.01 and 121) and in both the error below always occurs when I try to start a new session:
There was a problem gathering vehicle data. The vehicle may have entered Battery Saver mode. To correct the problem, make sure the ignition is ON and the battery is fully charged or connected to a charger. To Try again, start a new session.
The problem was solved. I provided a battery charger and kept insisting on the connection until it just plugged in and after that I had no more problems.
I was even able to apply an update to my PCM module.