Assuming you have set a memory position for one of the numbered positions. Open drivers door, press and hold the particular memory button you wish to associate with the key you opened the car with. within 3 secs push the "open" button on the key. a beep will sound to confirm position is saved. Each time you open the drivers door the seat should move to the saved position. if you unlock the car but jump into the passenger seat the drivers seat will not move. it moves to position only when drivers door is opened, that's assuming an other user has moved it to their position. hope this helps. its all in the manual page 128. Sometimes I've seen it loose the setting but its easy to repeat the above by pressing the appropriate button (1, 2 etc) and the unlock button on the key.