ive been doing a little research and I have a 05 nissan titan stuck in fail safe mode with "AT Check" light on. Tranny is in "D" but is stuck in high gear and will not downshift or upshift and tiptronic stop working.
Problem started right after i jump started the car, it was perfectly fine before that and I did not jump backwards.
I checked for codes, there are none, tried disconnecting the battery to clear but will not.
Question is, how do I fix this problem and how do i get it out of "fail" or "safe mode"
Ive seen few threads with same problem and nobody has answered?