Well, first, no, I didn't get it fixed. Fuck it. I'm getting a new car, refer to the General Automotive Section for that.....
For me, they said that it was slipping gears. Whether or not they just wanted my money for a new tranny, I don't know. I do know, however, that the computer in my car is not original, in fact, its for the wrong model. I get ALOT of false indications. Lights, check engine, transmission? etc.
When I turned off my engine after that gear symbol appeared, and I restarted it, it was still there, however, when I left the car off for 15 min (same as a cold boot on a computer) then it went away. Hence why I mentioned my car not having the original computer. I am no mechanic by far, but, it could just be that my car specifically is registering that transmission error because the computer is fucked up, plain and simple. For you, it may be the same, but I do not know.
I'm sorry that I really didin't answer your question, perhaps someone with more knowledge can.
PS, I am getting rid of this fucker REAL soon.... and at this point, I don't care how much I get for her, I just want it out of my life. Fuckin POS Bimmer.