It's intermittent and I haven't been able to notice a definite pattern just yet. In the video, you'll have to turn up the volume to hear it. It can be heard from both inside (under the dash on the driver's side) and outside the vehicle (somewhere between or in the steering rack and steering knuckle). With the engine running, you can't hear it outside, but you can inside with the volume and fan low or off. Even driving slowly through an unlevel parking lot that puts steering forces on the front wheels will provoke it. It doesn't do it when the front wheels are lifted off the ground - only under load, which makes me think maybe the bolts that hold the steering rack need re-torqued.