When Driving on an Up/Down Slope
WARNING: This page is about a different car, the 2008 Infiniti M45 and 2008 Infiniti M35. However, it is still accessible from the selected car via links, so may be relevant.
ASC judges up/down slope according to the angle of accelerator pedal and vehicle speed. Holding gear at the 3rd or 4th on an up-slope prevents shift hunting and controls the vehicle to gain maximum driving force. On a down-slope, automatic shift-down to the 3rd or 4th gear controls to gain maximum engine brake.