I want to retrofit lane assist to my car. i have bought the camera 3Q0 980 654 G. i have bought the steering wheel column which supports lane assist and acc. (ACC will be future upgrade) for all these upgrades i have agreed with a local vag center. they are really the best in Turkey. they installed everything but the tech guy could not able to complete the codding. the system, i mean my car does not allows lane assist activation. after adaptation ODIS cant find any errors. btw they did it before. i saw those cars in garage. but none of them was cabriolet. can you help me to find what is missing and resolve this codding. do anyone owns A3 cabriolet with lane assist or anyone has any full scan log for car which is a3 8v cabriolet which has an lane assist system? previously, they installed mmi nav plus and Bang & Olufsen system to my car and both of them are working well.