It went back to him twice, he thought it was a defective radar unit. So I had that checked by a local specialist that I know & trust, he confirmed it, so new one sourced, Swapped, coded & seperate re-aligned. Still doesn’t play full time. Audi retrofits only works Tues - Thurs most weeks & he’s 120 miles away from me, so a full day, early start & £50 return trip in fuel to get it to him! I am cross to say the least! he professes to fit the Adaptive cruise as a retrofit but it seems his skill & knowledge doesn’t extend to fault finding! But he’s messed this up completely. Went to him on a recommend too. I’m pretty certain the issue is in the wiring loom close to the RH unit, I’m just after any insights into any other connector in the engine bay that side for the radar unit. It’s only 3 cores, so once I get the air filter etc out the way & can get at the entire loom, I can just break into it & do a continuity check on the loom to the pins in the radar unit connector. I’m certain there’s a ‘stretch’ break in it somewhere close to the unit connector, where he disconnected it to remove the number, I just need to prove it then find it, replacing, repairing &/or extending those 3 cores is a simple job once I can get in there.