Correct. The hydra is a "17 position chip", however only 15 are programmable. The "0" position essentially turns the chip off and you are running off the pcm like the chip is not even installed. The "nS" position is the no start feature. When you switch to this mode the truck will stay in the last tune it was in as long as it is on. Once you turn it off, it will go into no start mode. To restart, turn key to on position and switch to a driving tune and then the truck should start like normal. People use this feature to its full advantage by hiding or removing the digital selector when leaving their truck for long distances or in bad areas.