NHTSA Complaint #11516035 — 2020 HYUNDAI PALISADE

I am having 2 issues with my 2020 Palisade. First off, for the last 7 months I can feel some sort of slip in my transmission when I am between 40-60 mph. I took in in back in November to the dealership and they claim they didn’t find any issues that I could reschedule and drive it with one of the techs at another appointment. Fast forward, took it to a different dealership this week for a second opinion because it’s still happening and more frequent. They told me they felt it happen once. My car is still under warranty. They suggest a transmission flush, but it wasn’t covered under warranty. My second problem is I’ve been caught in heavy downpour storms. Two times my car check engine light comes on and my car goes in limp mode. Basically puts me stranded because the car won’t run. After a day of letting it sit and dry out, it will run and check engine light goes off. They suggest that moisture is getting into the coil and I need a new coil pack and spark plugs. While at the dealership I ask if between the two suggested repairs will it fix the issue. They told me they can’t guarantee me that it will fix the problem. They want to charge me $1700 for something not guarantee when my car is under warranty. Has anyone had these issues? I contacted Hyundai Corporate and my case is suppose to be escalated.