Help! Stuck in 4hi

The computer won’t allow the shift in or out of low without being in neutral likely some water killed the actuator/s. Either the breather tube had a crack or you just got a water in through the top of the breather in the engine bay. They sit pretty low in the engine bay common issue sadly

 

So I did notice the tube was off and cracked. With it being replaced I’m gonna tape the tube and put a clamp or zip tie to secure it more, however when I got home and tested 4lo (I honestly didn’t know you had to go into 4hi first) I went into 4lo and it got stuck in gear and the dealership had to fix it, and when I called IF it happens again what can I do and they ignored the question just saying, if I do it right it won’t happened.