2016 Chrysler Town & Country shuts off

2016 Chrysler town and country shuts off after rain or washing. Have had in garage 3 times and they cannot find anything wrong. Purchased new and have extended warranty. Can someone give me any info as what to do.

Take a spray bottle with water. while running, start at each plug and work your way back, it is probably ignition wire related.

allpar.com is all about Chrysler. They have a minivan/Pacifica forum that has helped me with my Voyager and Town and Country minivans several times over the years. You may find some specific expertise there. Good luck.