Did you have your high beams on at the same time? As far as I am aware, there is no inter-connection between the operation
of the wipers (either manual or auto rain-sensing) and the fog lights.
From the 2012 Owners Manual, page 184:
The fog lights will operate only when the parking lights
are on or when the vehicle headlights are on low beam.
An indicator light located in the instrument cluster will
illuminate when the fog lights are on. The fog lights will
turn off when the switch is pushed a second time, when
the headlight switch is rotated to the off position, or the
high beam is selected.