Same thing happened to my 2006, seal rings in the connector leaked out the tranny fluid and it went into permanent limp home mode in 2nd gear. It will go into this mode after the speed sensors determine that the transmission is slipping, there is no way to get it out of this mode without the proper scan tool.
you can ad fluid, if you have the time you could order it from europarts in San Diego and get a dipstick, and connector, call them and they can expedite it to get it to you asap. you would also need a 7mm socket, ratched and extention to change the connector. I would get atleast 6 liters to be on the safe side. there should be about a pint or so of fluid to come out of the connector when you remove it.
If you are lucky there might not be any damage to the transmission but I would be sure that you fill it up to the proper level before trecking to a dealer because without knowing how low or how high the level is it will increase the possibility for more damage.
you will want to have the transmission full to help avoid overheating it too. just my
if not an option just found this for a dipstick and fill with some type of synthetic but that is at your own discretion, if it were me I would call europarts first thing in the morning.
To get you out of a bind for checking trans fluid, they make 48" zip ties. Very heavy duty, can find them in the HVAC dept for the flex duct lines wraped with insulation. The slide down good, you just need the measurement from top of fill tube. On the 07' its 42.5" + 80mm, and you have to find the link here that has the drawing specs for measurements. Only in an emergency of course.