Your car is equipped with COMAND Online NTG4.5.
As of mid-2013, TomTom Live traffic subscription was added, and if your car has that then you'll have option 'B54 MBCONNECT - REAL-TIME TRAFFIC DATA' on your datacard. Otherwise the Navigation will use the free TMC traffic service, which is a bit basic and only covers motorways and main roads.
The COMAND unit can also connect to the Internet via Bluetooth tethering to your mobile phone, but support for iPhone was only added in mid-2013 so earlier units can only connect to the Internet via Android or Nokia phones.
You can choose to upgrade the firmware on COMAND, but it requires STAR so it's a job for the dealer or specialist. You can update the maps though, the current version is V19.0, released in November 2019.