Do you have an FI indicator showing on the dash?
So how did you remedy the problem and how much water was in the CVT etc ? In other words , the rest of the story .I've experienced this problem on an '08 B650 with a flooded CVT. The floodwaters caused the Primary Pulley Position sensor to burn out and give very erratic readings back to the ECM resulting in the dash display showing changing numbers and not responding to either the auto/manual mode button or the UP/DOWN buttons.