To switch transmission to adjacent highest transfer (rather current transfer), press the lever back (+).

If the car moves slowly, transmission can not switch to the highest transfers. At the included manual mode, transmission will not switch to the highest transfers automatically. It is forbidden to exceed admissible turns of a bent shaft of the engine: the arrow of a tachometer should not come into the RED ZONE of a scale. If it occurred, you can feel braking by the engine as supply of fuel in the engine stops. It is provided for protection of the engine against damages, but it does not testify to any malfunction of the car.