This guy is dealing with a similar issue with a new low miles Moab 392. Water in the transmission due to damaged vent tube.
Warranty claim denied.
What should or can be inspected upon delivery? Could there be any visual signs of issues that could cause foreign debris to get in the transmission?
Stellantis will do this kind of tricks to refuse warranty on a brand new vehicle - long story short at 18k kms during normal driving in the city my engine died. Turned out a valve seized, bent and wreaked havoc inside - cracked block, pistons, etc. Stellantis blamed it on a "heavily modified" suspension - aka 2.5inch MetalCloak Game Changer kit. Ended up paying 30% of the cost after a lot of arguments and the "good will" of Stellantis to support their customers.
Then I lost the transmission due to sand ingress - was fully covered under warranty. Go figure.