TJA needs to be coded on any US model, it was never offered as an option.
I concur w/ SuperPoly re: the difference in traction control. Beginning w/ the 2018 refresh the new system is 50x more responsive, and having switched from a 2017 to a 2021 (both non-S BEVs), the difference is unmistakable. High-G cloverleaf ramps were always a surprise waiting in the wings with the old system!
https://www.press.bmwgroup.com/global/a ... T0277603EN
"Key factors here are not only the increased output of the motor in the new BMW i3s, but also the innovative traction control system adapted specifically to the instantaneous power deliver of the BMW eDrive system. Presented for the first time in the new BMW i3s, the system improves traction and driving stability in adverse weather and road conditions when pulling away, in active Brake Energy Regeneration phases and when accelerating out of tight corners. At the heart of this innovation is the control system’s 50-times-faster routine, made possible because – unlike conventional driving stability systems – the control process is now calculated directly in the powertrain
instead of in a remote unit requiring long signal paths. This development provides further evidence of BMW i as a pioneer of innovative technology within the BMW Group."