Enabling Pilot Assist and Adaptive Cruise Control

[luka.gunza]

I googled a little and found a forum where people a speaking about OEM retrofit for PA and ACC in Volvo XC40. One man with MY21 XC40 said on that forum he made a retrofit for PA and ACC and dealer didn't change pump - it is also very good sign that what you said is true. But  as you said "the best is  to check with camera, what abs unit do you have".  
By the way, I also googled  for the new OEM pump number for my  MY21 XC40, and the original part number would be not like yours, last three numbers would be 704 (not 774), so probably different for different Volvos, but maybe last number "4" instead of "2" is important.