save your time, a dealer will not be able to do this upgrade. and it's a lot more than just enabling something, it's different programming with new strategies from what i've heard. one of those things where it would've been better off ordering it with it
You would need to add the CCM (cruise control module) and both front side obstacle detection modules into the existing module network, calibrate the CCM and then enable the features in the IPMA and other relevant modules for everything to work. It can be done, but it is no easy task. The dealer for sure cannot do it.