The selection lever can be used to adapt automatic switching to a special operating mode.
P – parking lock – an additional measure when leaving the car, possible only when the car is parked.
R – reverse gear – set only when the vehicle is stationary.
N – idle. There is no power supply from the engine to the rear axle.
When the brakes are released, the car is mobile: it can be pushed, towed, pushed. Do not set to N while driving (otherwise the car may skid. For example, on icy roads).
[Article was borrowed from the website mercedesman.ru]
D – movement. All gears are available. In normal mode, D provides optimal driving conditions.
Z – shifting only up to 3rd gear. Suitable for driving on long, medium-steep gradients. Since the gearbox does not shift beyond 3rd gear, the brakes can also be used here.
2 – shifting only to 2nd gear. For driving on steep mountains, in mountains with a trailer, in difficult working conditions, and for engine braking.