Hi,
There didn't seem to be clear instructions on this thread on how to enable the Adaptive Lane Guidance. Instructions below are for OBDEleven owners:
1) Go to Front Sensors Driver Assistance System in the Control Units (Module A5)
2) Security Access - code is 20103
3) Coding - Point of intervention - Set this to early (setting via menu)
You should then see the option in the driver assistance settings of the car menu. Works perfectly for me by keeping the car centre in the lane. But this only works above 65km/h. So there are two more changes missing to make this into a TJA function:
1) Allow Adaptive Lane Guidance to work below 65km/h
2) Allow the ACC to stop and start without the 3 second limit
Hope this helps!