Do you have any pictures of what your display looks like right now?
Do you have a manual transmission? The indicator is for DSG.
not true, my 6MT has this
If you can locate a VAGCOM (or buy one) this might be able to be put on there for you. Your display looks a bit different from mine so if the options you can enable on there don't permit you to enable that your next option is to try VAGCOM.