New to the X5 family but Bimmer owner for years

[Jabet01x5]

Hi Everyone,

2001 X5 4.4 -Sport, 232k and climbing.

Thanks for being such a great source of details. My question has to do with the ultimate Transmission of the X5.
I have read MANY threads this weekend but I can't seem to find the answer to my challenge.
When I purchased the X5, I drove it twice and even shifted through the steptronic with ease. The trifecta of lights did come on but then off but now are on full-time, which I do believe is the ABS module and will have it rebuilt. Now I can't shift out of 4 up or down, its stuck in 4th when in steptronic but regular "D" mode all is fine, I do have the small thump when starting from the stoplights but if I roll a little there's no thump.
So why can't I get out of 4th, will this happen if the Trifecta lights are on?? I am having my Trans fluid checked today but I'm just stumped on this one, any thoughts would be greatly appreciated.

Jeff