Went through some water a few months ago and within about 30 seconds every light came on my dash. Every failure possible, hill start assist, pre collision, abs, drive mode select, etc etc. So it was quite annoying to drive for a while but it is my only vehicle so I dealt with it until my dealership had a loaner available to me.
The code it threw was a bad speed sensor, which I did replace myself for $60 but it didn't fix the issue.
Took it to the dealership, ended up being a bad tone ring. Thankfully it was warrantied under the powertrain warranty.
While there we fixed a lot.........
Driver window not opening/closing properly. (Relearn fixed, didn't charge me)
Passenger side mid pipe cracked and rattling (been dealing with that since day 1) (~$530 part and labor)
Rear camera replacement (warrantied)
Rear diff bolt upgrade (warrantied)
Front Axle Disconnect Actuator was leaking (warrantied)
Coolant flush (~$200)
Cabin filter (~$85)
I saw the warranty bill for the FADA replacement that was $4700. I didn't see the other costs but holy smokes if you have a leak up front go get that done asap before your warranty runs out. That would have been an awful pill to swallow.