I have been wondering about this since I got 17.26.96 or what it was called, because of the excessive swerving in any minor undulation or crest. Even when myself can see the lanes clear, the car does not. Enough speculations, I tried. Second picture, 1830, did not work. Gave only a weak and short left lane marker in display, TACC available, autosteer not possible to activate. https://teslamotorsclub.com/tmc/attachments/dsc_1830-jpg.244001/ First pic, 1829, worked fine with autosteer and TACC. No problems. https://teslamotorsclub.com/tmc/attachments/dsc_1829-jpg.244000/ I am on 2017.32.6 ca28227 Can anyone please try also and confirm my findings? Why are they going backwards?