Correct, if you use the outside buttons you can lock keys in car....

 

My wife has a 2013 Explorer Limited with pushbutton start and we are able to lock the key fob inside while the engine is running and when it is not. I had to turn off the auto locks on the productivity screen to be able to do it. You just push the 7-8 and 9-0 at the same time on the door keypad to lock the fob inside. I assume the new F150 will be the same.

 

When my Hyundai fob is in my possession or otherwise in the vehicle and the doors are locked EITHER manually OR with the fob from inside, they remained locked until unlocked manually or with the fob. Conversely, the vehicle cannot be locked when departing if the fob is in the vehicle. I love the system.

 

Incorrect. Push button start is just fine.

 

I have mixed feelings on push button starts. I see the benefits, but there are also problems. My wife has push button start on her Toyota, which is great for her. The key fob is buried somewhere in her bag of crap they call a purse. So she runs into the drug store in the summertime leaving me and the small kids in the car while its running and she takes said bag of crap with her. Car beeps and shuts down, too late though as she is already on her way in. Windows up and hot. No choice but to open up the doors and sweat it out, or else unbuckle the kids from their car seats and chase her in. Before I had remote start, I always open the passenger side door in the morning as its the side closest to my front door. I put all my stuff I take to work on the passenger side, reach over and start the truck with the key. Then I get the kids loaded in to take to the babysitter and so on while the truck warms up/cools down. Keyless start requires you to press the brake pedal to start.

Another benefit of having a real key, is there is this awesome place just behind the steering wheel on your right to store the key...a special slot if you will. And everyone knows where this key is while the vehicle is running. It's a great idea. If you're a dude and don't want a bulky key in your pocket while you drive (in the summer, lets say...no coat) where do you put it? Some vehicles don't really have much non-cupholder storage spaces.

 

Ford's do not shut themselves off if the key leaves the vehicle, a warning is displayed if the key is out of range however.

In my fairly extensive experience with keyless start/entry, there are NO drawbacks to the technology.

 

I would agree with this, my kia optima doesn't shut down either. It does display warning but doesn't turn the car off. I really like push to start option!

 

Do they lock the vehicle in park when the key is missing?

 

Not entirely sure what you are referring to. If you drive the vehicle away without the key (obviously the key was available to start it) you can keep driving it. You just won't be able to restart it once it is turned off (a warning is displayed). It doesn't go into Park unless you put it there.

 

I had a Altima rental a while back that had push button start and I LOVED not having to dig for the keys. Very nice option IMO.