Accidental spill of water into gear shift selector of my E320 - Vehicle won't display gear selection/shift from park to drive. Dealer diagnosed on SDS tester & replaced floor shift assembly for about $1000. As I was waiting to pick up vehicle at dealership, lot attendant could not drive car past 2nd gear. They tell me they have to retest on SDS as new part may not be communicating with on board computer in engine or may have do some electronic resetting. What could be the problem? My bottle of water turned out to be very expensive.