I’d like to know this too. On the German service I think I accidentally turned them on with the d pad? Anyway, couldn’t work out how to turn the things off!
Maybe dpad left lets you toggle if off, otherwise use the contol in the cab itself. On the Talent 2 (RT) its on the right side near the bottom.
My question was how to turn them on? I scouted all over the place and couldn’t find it. Thanks for letting me know they’re on the bottom right side.
In classic controls it is left d-pad, but just a quick tap, otherwise you end up bringing up the door open/signaller menu.
It's really important to note if you're using classic controls, as the wipers are awkwardly mapped with the door/signal commands (on console anyway). Holding the left d-pad will activate the door menu, but tapping it will activate the wipers. If you end up accidentally activating the wipers, you can usually keep tapping through left d-pad until they shut off again, but on some trains I think you actually have to locate the wiper controls on the dashboard to shut them off.