Many connected services and apps need to be able to send and receive information and data. The data sharing function is deactivated by default. To use your connected services and apps in the car, you must manually activate data sharing for them.
CarPlay makes it possible to control many of the functions available in your iPhone via the car's center display. Here you can read about CarPlay and what you ought to know before using the function.
When your car is connected to the Internet, you can easily download and update apps directly from the car's center display. You also have the option to uninstall apps.