I am also thinking about installing push start in my Grande. However, I have confusion over one use case between key vs push.
Normally, when we drive with key ignition and stop & leave car momentarily with family in car, we just turn the key to ACC, this kills the engine but your navigation/media unit remains on, WITHOUT a reboot. This is very common scenario.
Whereas using push button to kill the engine also turns off ACC. You have to then push it twice to switch to ACC. This will restart everything. Am I right?