1A, 1B: Shift lever
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2005 Porsche 911, 2004 Porsche 911, 2003 Porsche 911, 2002 Porsche 911, and 2001 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.
The ParkAssistent is activated by moving the shift lever into reverse (shift lever position R) with the ignition switched on. The shift lever must be in reverse gear during diagnosis on this system, as otherwise the control module of the PST 2 cannot be read out.