That ABS is very unliekly to be capable of hill hold
You'll most likely need an ABS module with an AC suffix or similar. there are others, but some are 4WD (like my AB, in my Touran with 4motion).
FWD, HHC. Possibly Comfort Driving Assist? too.
It's best to swap the whole module, but you need a very clean one, from a reputable source so you don't have crud in the lines. It's important to be meticulously clean, and have a good idea what you are doing, if you swap ABS components. You'll need a decent pressure bleeder and plenty of fresh, decent quality fluid. The hydraulics blocks asharing the same "block" number can be interchanged, so if the new units arrives with the same block as you have, you can keep your hydraulic block. You have to take it out to get the unit apart anyway though. Mine was a "2054" block, and the valve in it jammed, so I swapped the block to another 2054 that I had, but kept my module.
You need to find the PR codes you have on your car, then find the PR codes you want to add (HHC), then find the module that matches using 7zap or realoem EKTA etc.