Hi. 2003 CVT automatic wont shift into 5th either with regular or Steptronic. Seems to drive perfectly up to 45+ mph, but when used to shift to 5th, just is high rpm’s and no shift. Is there anyway this is a non-CVT part like the ECU or programming issue. Was wondering how common a bad tranny would manifest with a single high gear issue, but otherwise be perfect. Thanks much.