Mist Wipe Mode
WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
When the control knob on the control stalk of the multi-function switch is moved to the Mist position for less than about one-half second, the SCM sends an electronic washer switch message to the FCM, then the FCM energizes the wiper on/off relay for one complete wipe cycle. The FCM de-energizes the relay when the state of the park switch sense changes to ground, parking the wiper blades near the base of the windshield.