1 (also labelled "L"): Restricts the transmission to 1st gear only, also known as a "reduced equipment". This is beneficial when a considerable torque is required with the wheels (such as, when accelerating up a steep incline); nevertheless use at greater speeds can operate the engine at an too much https://martinoybef.blogkoo.com/not-known-details-about-gearbox-auto-53523963