One (also labelled "L"): Restricts the transmission to 1st gear only, often called a "very low equipment". This is beneficial when a significant torque is required for the wheels (as an example, when accelerating up a steep incline); on the other hand use at larger speeds can run the engine https://trentonnwaef.ampedpages.com/not-known-details-about-gearbox-auto-61093916