Thanks Ken.. I saw the 9/5 conversion and then -40 in both strings and it didn't make sense at first glance.. Now why do you suppose they did things this way? It doesn't really save any math operations in terms of unit conversions.. Does it perhaps have anything to do with the system being able to start operating in hybrid mode once the engine reaches 40C, as this would give it a zero point... I have trouble believing it has anything to do with the -40F = -40C thing, as the US market is the only one that uses F, everyone else in the world is metric..