Cabin Vent inlets - is there a 2nd input vent?

From

what I've seen of the battery exhaust vent, it does not blow directly to the outside. There is a small gap between the battery exhaust vent and the actual outside vent hole with the rubber flaps on it. This means that the hot battery exhaust may not actually make it outside, but may vent into your 12v battery area and the rear cargo area. I have noticed in my car that when I have the cargo cover deployed, that area gets extremely hot.

I believe Toyota designed that gap between the battery exhaust vent and the outside vent specifically for the reason you mentioned, to prevent a pressure differential inside the car caused by the battery exhaust vent.

Basically, on recirculate, battery exhaust remains in the car. On normal outside air intake mode, some is exhausted outside.

 

there's only one vent, and it works perfectly fine, no matter the front vent setting. there is no such thing as a sealed vacuum in the car. otherwise, we would suffocate.

if your vent grille and fan are clean, and you run the a/c when it's hot, you won't have overheating issues. this has been proven out over 12 years.

coincidentally, the pip has two inlets, and two cooling fans.

 

does anyone know how to access this rear vent to the outside? I am getting some fumes in the cabin from my exhaust and I think it might be because the rubber flap is not sealing correctly anymore.