I have a 2019 Jetta S (US version), and find VW's Hill Hold Assist just awful. I'm an experienced manual-gearbox user, and would much prefer that the brakes release when I take my foot off the brake pedal, and not ~3 seconds later. The dealer says it's a "safety feature" and won't disable it.
Some web pages describe turning off Hill Hold by using VAG-COM software by Ross-Tech. The car described on this page is a Golf Mk.6, a bit older and not the same as mine, but carrying a very similar electrical system and feature set. Here's a similar thread where another owner struggles with Hill Hold on a 2018 Audi A5. On both the Golf and the Audi, the Hill Hold function is in the same place, within the CPU's ABS block. Having driven and worked on VWs for decades I observe that many of the cars' systems stay the same for many years. Thus, I think it's likely that the Hill Hold function on my car will also be found in the same place, within the ABS block, as on these two VW products.
Have any of you disabled this system? If I go in and just look, am I apt to erase everything and brick the CPU?