to change up a gear, the lever is pushed forward (against a spring pressure) towards the +, and to change down, the lever is pulled rearward towards the −. the dsg transmission can now be operated with the gear changes being (primarily) determined by the driver. this method of operation is commonly called "tiptronic". in the interests of engine preservation, when accelerating in manual/tiptronic mode, the dsg will still automatically change up just before the redline, and when decelerating, it will change down automatically at very low revs, just before the engine idle speed (tickover). furthermore, if the driver calls for a gear when it is not appropriate (e.g., requesting a downshift when engine speed is near the redline) the dsg will not change to the driver's requested gear.