One (also labelled "L"): Restricts the transmission to 1st gear only, generally known as a "minimal gear". This is beneficial when a sizable torque is necessary with the wheels (for instance, when accelerating up a steep incline); however use at better speeds can operate the engine at an too much https://gearboxauto65184.blogoscience.com/40423050/the-definitive-guide-to-gearbox-auto