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Ordered the step edition sliders with kickout (powder coated with bed liner step), they arrived, and due to holiday travel, business travel, and cold weather, they are finally installed after months of sitting in garage! They look and work and work great!

There are 2 sounds being discussed. One is the pedestrian sound which is a speaker, the other is an electronic whine (maybe coming from the inverter)

If you want, download an app like specdroid (or any FFT app), and you can easily 'see' the noise, even if you can't here it (note the location of the green crosshairs)

Ya. I have a recording of it on the first page, and a plot that shows the frequency (to compare to the pedestrian warning sounds). I've also been able to get the noise when the stopped with engine off by releasing a little pressure on the brake. It is as if the inverter is commanding torque...

I know it isn't "the sound hybrids make" because I recently drove a Camry hybrid for a few days and it didn't have this noise.

Full audio file uploaded in zip folder. For this clip, I put my phone on the hood of truck, got in (door close sound), put in gear (parking break noise), you can hear the pulsating whir that is the pedestrian noise as I idled around parking lot getting up to ~10mph, stopped and took phone off...

Sorry for the delay. I have uploaded a clip of the sound (in a zip folder because apparently you cannot upload audio files). The high pitch whistle is very faint and starts about 1.5s into the clip. If you do an FFT on the sound file (I used Audacity), you can see a spike at~4800Hz and a few...

Not sure that the pedestrian noise is the same noise Bcphoto3 is talking about. I have a Trailhunter (since early Oct) and will post some info if same noise @Bcphoto3 , does it sound like the noise is coming from the passenger side of the vehicle?