Its not repairable,
The full electrohydraulic unit needs to be changed, and using scrapyard part will be a gamble every single time.
I would suggest a brand new part, its about 2000 usd in retail, add 35% duty to that and also shipping charges.
However if you have an issue which shows overnight rather than driving then you need to check other stuff, it maybe a bad module screwing up the powertrain canbus.