If, after being in D or R, you find that the gear position reverts to N, such as when turning a corner, replace the shifter assembly. Warranty coverage is 3/36. This excludes 90% of applicable vehicles as of this writing. :rant:
Interesting that it took so long for a TSB to be issued on this subject. This has been a problem for a long time. http://priuschat.com/forums/gen-ii-...ing/65102-how-replace-2g-gearshift-lever.html