Just on the key thing, a number of manufacturers are going the "smart-key" route, and they are very nice to use. Not fumbling for keys etc. and proximity detection for door opening is nice.

For the other features like which doors to unlock, you need to go through the settings in the car. There are usually a bunch of configuration things, including which door gets opened when you press the button! One car I hadyou could set the steering sensitivity through the configuration.

If you don't like the default behaviour of the car, ring the sales centre and ask them how you change it!