| 摘要 |
The invention relates to a method for operating an automatic transmission apparatus (1) with a parking lock device (2), wherein the parking lock device (2) has a hydraulic apparatus (3) with a hydraulic cylinder (4) and a hydraulic piston (5) which is arranged therein and can be secured in at least two positions by means of a locking apparatus (7), and an emergency unlocking apparatus (12), wherein the hydraulic piston (5) is operatively connected to a switching shaft (6) of the parking lock device (2), and a pressure can be set in the hydraulic cylinder (4) by means of a hydraulic valve (9), and wherein the switching shaft (6) can be moved within an operating position range by means of the hydraulic apparatus (3). In this context there is provision that when the emergency unlocking apparatus (12) is actuated, the switching shaft (6) is moved into a position which lies outside the operating position range, and that an operating state of the emergency unlocking apparatus (12) is checked, wherein an activated emergency unlocking apparatus (12) is detected if, over a specific time period, a position sensor detects a position of the switching shaft (6) which lies outside the operating position range and/or if a distance travelled by the switching shaft (6) and detected by means of the position sensor exceeds a limiting value. The invention further relates to an automatic transmission apparatus (1). |
