Nissan Terrano diesel automatic. How and when can you change High to Low ratio?
High to low /low to high ratio, you will need to be stopped and the transmission in neutral for this to be changed. The 2wd – Auto – Lock switch can be switched at any time, as it operates an electromagnetic clutch – 2wd is rear wheels driving only – Auto – is to automatically engage 4wd when wheel slippage is detected (this also happens when turning at intersections, due to the inside wheels having a shorter path to the outside wheels, and can give a binding effect on sealed roads (I don’t drive with it in auto on sealed roads) auto is excellent if you get, or expect wheel spin from an intersection when wet, just flick it on before or when you have wheel spin, also on gravel roads, having it on auto will greatly reduce the sliding of the back end, and make the car noticeably more stable. Lock – this locks the differential, which further reduces wheel spin, when in mud / snow, but this will also make the car not want to turn corners, due to it resisting the different distances traveled
