When your car is connected to the internet, it can receive over-the-air1 updates to keep the car's software up to date. The car will tell you when there is an update available to download and install by displaying the update symbol 
in the status bar as well as a notification.
You can also check for new software updates by going to in settings.
Automatic software downloads
You will be asked if you want to enable automatic software downloads when you set up your car for the first time. You can always choose to enable or disable the automatic downloads at a later time in settings. If you decide not to enable them, you will be asked for consent to download software updates whenever they are available.
Installing software updates
When a new software update is available, the car will download the update but it won't install it for you. You need to start the installation yourself, either via a notification in the centre display or in the software update view. You can also choose to postpone the update so that it installs at a later time or cancel the installation after confirming it.
You can't access or use your car while a software update is installing. Therefore, make sure that there is sufficient remaining battery charge and that you don't need to use your car during the installation process. The car will tell you how much battery charge you need to start the installation and give you an estimation for how long it will take to install the update.
Note
Installation issues
There might be updates that you can't install yourself. If this happens, you will see a notification in the centre display telling you what to do next.
Don't use the diagnostic port
Don't use the diagnostic port while a software update is installing. Using the diagnostic port during an installation might affect the car's systems and the software update.