Inside Drivers Rear Quarter Panel?

[cvaxsurf]

Does anyone have any idea of the function of the black plastic box, mounted on the inside bottom of the rear, drivers side, quarter panel?

[Abejohnson]

If it's what I think your talking about, I believe its a vent.

[Mark Rogers]

I looks like a vent, but it doesn't seem to be part of the rear climate control system.  (The return vent for the rear climate control is under the second row.)  I wonder if it provides an exhaust to the outside for air that blows in from the front.  Just a guess.

[andy_george]

I think it’s the cabin vent for when a door closes, as on most vehicles. That’s a guess, but it was always my belief that was it’s purpose.

[Breuby]

I removed mine and patched over the opening. My guess is the inverter is mounted just above it at floor level in that same cavity. The inverter has a fan and creates heat when it operates hence a vent to allow air movement and heat dissipation.