I never ever used to bother to use the "hill hold" or "auto handbrake" on my 2011 Audi S4, until I read that there are just too many early life failure of the electric handbrake units, and the either official line from VW Group or "forum speak" line was - "when and/or if possible always enable the auto handbrake to hold the car instead of operating the electric handbrake, as this reduced the number of uses of the electric handbrake" - use the electric handbrake as a parking brake only - now that did not give me much confidence that these electric handbrake modules are fit for purpose long term.
So, typically I've started to enable the auto handbrake function and use that to hold the car while on the move, or if it interferes with my progress, I disable it, for those who do not know about this at all, on some VW Group cars the hill hold or auto handbrake function works by closing hydraulic fluid valves so that the brakes remain ON on all 4 wheels by virtue of the trapped hydraulic fluid, the electric handbrake is just an electric motor in both rear wheels, if you doing anything that risks your life, like taking the seat belt off or opening the driver's door, the electric handbrake automatically replaces the hill hold function, similarly when the engine is switched off, the hill hold automatically gets replaced by the electric handbrake function. Some cars ignore the driver's seat belt being removed and some
lower level cars with mechanical handbrakes, have hiil hold lite which can not be disabled and only holds the car for many 3 seconds after the footbrake is released, good enough though once you are used to it.