Originally Posted by StephensNC
We just returned from a short trip to the outer banks where we had to drive through high water on NC 12. During this "adventure" our Interstate was constantly sending us an audible signal when we were hitting particularly deep water. Does anyone know if there is a sensor for this or was it perhaps some other sensor going haywire under the circumstances? Just curious.
vehicle should be driven in standing water high enough to come up higher than the bottom edge of the tire rims. Nevertheless I do it sometimes because in the New Orleans metro area street flooding during and after a thunderstorm is a fact of life. But it should always be done at a crawling pace, slow enough to not kick up a wake. Manually downshift to "1" before entering the standing water, and keep it that way until you get out of the water. This will keep your speed down.
My best guess as to the beeping you heard was the alarm for the retractable step and awning (which share an alarm). The wiring connections for this alarm are not necessarily waterproof, so if you get the junction box wet the alarm could go off.