water logged sl500
I hope you got a real good price and an extended warranty.
First thing is to drain all the lubes and check for any signs of water. It's the first few drops out normally.
If there is any 'mayonaise' you need an immediate flush,flush, pray.
Quite possible one or more of the electronic modules got wet.
Tranny control is electronic. Top system is horrendously complex computer controlled system. Good luck.
Dealer diagnosis is the best bet to find out what's bad.