Hi, I'm a new S100D owner, with 2000 miles so far. I have used the autosteer a lot on the highway, and the lane change was working great. Yesterday, I drove 75 miles the morning and 75 miles the afternoon, mostly on the highway. The autosteer was working well, but lane change never had any sign of doing anything. This was on a clean 4 lane highway (2 lane each way), autosteer on, set on the speed limit (not more), the hands on the wheel (I know auto lane change does not work if your hands are not on the wheel). When switching the turn lights, nothing happened. And I tried a lot of times. Any idea?