My car has the Technology Package. This gives the Audi music interface (AMI) in the front centre armrest, the Colour Driver's Information System (DIS), the MMI Navigation Plus including MMI Touch, and Mobile telephone preparation High with online services.
In the slot in the dashboard is a data SIM card. This has always worked fine for the WiFi access point hotspot, the Google Maps send-to-car, the Audi Connect Weather/FuelPrices/etc., the Google Earth Navigation display, etc. However the car has never had Online Traffic Data.
When I scrolled down the list of sources in INFO>SETTINGS, I only got the TMC and TP options. The Online Traffic Data option that should be on the bottom of the list was missing for some reason .

To fix this you need to use VCDS:
[Select]
[5F - Information Electr.]
[Adaptation - 10]
Select Channel 69 and Read
change the value from 8 to 32768 then Test then Save
Reboot the MMI (Press MENU, central MMI knob and top right softkey)

Then when you go into the list of sources in INFO>SETTINGS, you will now have the additional items of “Online Traffic Data” and “Online Traffic Data License”.



Scroll down to “Online Traffic Data License” and select it.



The system will then check your traffic data license.



The system will return to you that a license to use online traffic data is available. Select to active it now.



The system will then ask you to activate online traffic data. Select to activate it.



The system will then activate for you with a license for 36 months. I don’t yet know what happens or how much you need to pay in 3 years time!



When you return to the Navigation Map, you will see that the usual text in the bottom left corner of “TMC” has been replaced with “Online”. In the settings we have still got TMC data enabled, but the car is giving us the icon for Online traffic data as that is a higher priority.


(In this image we're still in the 'standard' option for “Map display” with only the TMC traffic data overlaid onto the map, but now have the different icon in the bottom left corner).

In the Navigation settings, there is now a new option under “Map display” of “traffic”.



If you choose the “traffic” option for “map display”, your map will look like this.


Notice the red and green highlighting of the roads that we didn't use to have with only TMC traffic data.

If you choose the “Google Earth” option for “map display”, your map will look like this.


Notice the red and green highlighting of the roads. Remember that this car has always had Google Earth as a map display option, but previously the roads were not highlighted with traffic colours.

In the Navigation settings, there are now two new options under “Map content” of “Free flow of traffic” and “Traffic obstructions”.


I'm not yet sure whether I like the green highlighting for “Free flow of traffic”, and might leave it only with the red highlighting for “Traffic obstructions”.

That’s it – you now have Online Traffic Data working! Thanks to a thread over in the A7 forum where I read some of the details for this.
I don’t know why this wasn’t already enabled on my car and needed VCDS to enable it. I also don't yet know what happens in three years time... I presume that Audi will want money for it?

I think that this Online Traffic Data is the same feed as used on the Google Maps website, but I haven't yet confirmed it.