For online software updates via the communication module: an Internet connection exists via the communication module More.
For online software updates via Wi-Fi: a connection to an external Wi-Fi hotspot exists More.
Your vehicle is linked to a Mercedes me user account More.
Online software updates without Mercedes me user account: The Allow software updates option is activated in the Software update menu.
Depending on the software update, this is started via the 
communication module, 
Wi-Fi or an 
external storage medium.
If the Automatic online update option is active, available software updates are downloaded and installed automatically. Activate the option in order to always keep your vehicle up-to-date and avoid security flaws.
The online software update is downloaded and installed automatically.
If the option is deactivated, you will be informed of new software updates once. The updates are available for downloading for a limited period of time.
The online software update is downloaded and installed automatically.
Some software updates require an additional connection to a Wi-Fi hotspot. The connection to an external hotspot can be established when the software update is started.
The update is downloaded and installed automatically.
For software updates requiring a safe vehicle status: when the last installation step is reached, a message appears on the central display after the vehicle is switched off. Follow the step-by-step instructions on the central display to complete the installation.
There are software updates that can only be installed when the vehicle is safely parked, there are no more people in the vehicle and the vehicle is locked.
Online software updates cannot be performed via external Wi-Fi hotspots that are encrypted using TKIP.
A message about an available map update appears on the central display.
The map update is started.