Well I'm asking if the SD40 even have an alerter is because it's not only Q not doing anything. As far as I see, there aren't even any physical buttons for alerter acknowledgement. Or did you manage to find any?
Yes. The foot pedal? (modeled/not interactive). Like I said, just reporting. You can turn the system and watch to appear on the HUD (!) but you can not interact with or to acknowledge. BR o7 either doesn't work or half-inplemented I don't know how it is IRL in UP SD40s. The one in the game is partialy fictional.
Strange, because it has always worked just fine on the CSX SD40. (There's a big yellow mushroom button to your left to acknowledge)