oh shoot, my bad, no I don't mean the engine. I see how this can be confusing.

What I do is, I put the gear in park, (foot off the pedal) press the button once (that shuts the engine but not radio, etc), get out and lock the door by touch (and that kills all the electronics) then walk away.

worked well for me since day 1.

__________________
2007 4.8i Space Grey, 20", black nevada interior
All options with no 3rd row, rear entertainment,
handling pkg.