Okay, confirmed on my 6000NEX that only the following steps are required....
Step 2 turn power on push main menu button (bottom center)
Step 3 push AV icon (bottom center)
Step 4 on AV icon screen push off button (towards bottom)
Step 5 touch quadrant 4 (half inch in and half inch up from left lower corner of touch screen) hold your finger there for about 10-12 seconds. "set on" icon will appear that means you are done.
No need to ground the parking brake... Yeah.... TY OP....