. Well the interior sound of the Model 3 is clearly wrong judging by the number of people complaining about it. We're simply trying to make some improvements. Thanks for contributing your thoughts to that end.
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Rear deck cutout
- Thread starter Dbregmam
- Start date
Eno Deb
Active Member
Nobody outside of Tesla knows, but my guess is that they are simply trying to do something about the noise that some people have been complaining about. Just one more small change after many others that they have already made.
The vents in the carpet are indeed at the top on each side but the vents to the exterior are low down behind the bumper on each side. Wouldn't make sense to have a vent on the top of the trunk where water could flow in.
It’s is quieter for sure but still too loud in my opinion. I have put noico everywhere that I can without dismantling the car too much (trunk, frunk, front doors, rear shelf), put in rpm wind kit, and added seals to all doors.
It’s now better than an economy car but not as good as a true entry level luxury car. I didn’t do any measurements.
OP here - looking back at the material, it almost, looks like a charcoal filter, so I wonder if it helps with air filtration.
That's my first thought. We could use Charcoal filter material there from Furnace filters. Not sure how much sound absorption Charcoal filter material will do though.
Eno Deb
Active Member
Well, given that the air is pulled in at the front by the HVAC fans and flows out the back, that would clean the air in the trunk. Can't really think of a good reason to do that unless you keep a kitten litter in the trunk cubby.
But another question: is this piece easily removable? If yes, could you check if there is a part number printed on it somewhere?
Chuckie, I found this pic (borrowed from another thread) which shows the left side vent...on the side of the car behind the rear bumper cover.
Thanks!
Looks like the air comes from the top side and down. I covered the floor and sides in the middle tub so should be ok.
I did remove the noico and replaced it with some breathable foam after see this thread.
NeverFollow
Active Member
When I travel with passengers, in general the trunk is often filled to the brim.
So there is no air circulation in the trunk.
IMO, a better location would be on each side of the car cabin
around the area where the top of the rear seat belt are anchored.
StealthP3D
Well-Known Member
That would be a better location only if you didn't want the trunk contents to be climate controlled. Having the cabin air exit through the center of the rear deck has the advantage of having climate controlled cabin air circulate around the trunk contents before exiting to the exit portlets under both ends of the rear bumper cover. In hot weather, the cooled air from the cabin will control solar heat buildup in the top of the trunk helping to protect the contents of the trunk from extreme temperatures. In wet/cold or freezing weather, warmed cabin air similarly keeps the trunk and its contents warmer and drier. If the cabin air exited near the rear pillars it could not naturally flow through the trunk contents before exiting. And the air vent shown in the photo is truly anemic looking, even if there are two of them. Are you sure it's not just a speaker grill? The Model 3 is designed with very nice airflow, something my wife and I demand ever since we had a Subaru with terribly anemic airflow.
As to having a trunk so full that the contents might block the airflow, you will see that even after cramming as much stuff as possible in there, there is still a little room at the top for air circulation. It doesn't take much. The shape of the top of the trunk pretty much ensures there will naturally be little gaps above the load. The only way it could be an issue is if the entire top of the trunk was stuffed with a soft, compressible item like a loose sleeping bag or clothing. I recommend that be avoided anyway for a number of reasons.
NeverFollow
Active Member
This is interesting, but I doubt that any car manufacturer might worry too much about trunk content.
In the case of hot air, if the car is not in motion, which is the majority of the case,
the hot air will accumulate on the top of the trunk, so there would be no air circulation.
I think that providing air circulation in the trunk might be an added safety protection in case someone get abducted
in the trunk. There is now a mandatory emergency release, but if the car is in motion, it would not
be safe to open the trunk, or the person might also be unconscious, or it's just a pet, so the opening would prevent
to not not suffocate, and protect the car maker from liability ?
It was just a picture that I found from the Internet to give a better idea of the location that I was thinking about.
I don't think there was any vent. About the black area, I think that you are right about been a speaker.
I noticed that the Ford Escape hybrid SUV had an opening for the battery on the left side.
I just assume that this was an exit for the hot air when parked, but it could have been the other way around
to get clean fresh air to the battery fan and then using a vent inside the rear bumper to release the hot air?
I wonder then how work then the air re-circulation in a car? If I follow your explanation,
the air should flow from the back of the car, or from the trunk, and then go back to the front,
to pass through the AC to remove the moister, and the heater if needed.
You would need an air duck in this case from the trunk to the front of the cabin?
In the case of the Model 3, I noticed some air vents under the front seats.
I wonder if those vents are not used for the air re-circulation, since there is no foot air control for the air passengers,
only the air vents on the middle console where the two USB plugs are located.
But there must still be a mix of outside fresh air to avoid high concentration of CO2.
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The air does not flow back into the car after exiting the rear vents....vents are nothing new in cars...been around for ages. You simply can't pump air into a sealed box efficiently. The only thing unusual about the Model 3 in this regard is the large deck cut out...I've never seen that before, although I've learned on this thread that Volvo does something similar.
Eno Deb
Active Member
No, in recirc mode the air is simply pulled from the cabin interior. The trunk does not actively participate in the loop (although there will be some passive air exchange through the vent on the rear deck). Also, no air will be sucked in through the exterior air vents in the trunk even if somehow underpressure builds up inside the car, since the vents have flaps that act as a one-way valve.
StealthP3D
Well-Known Member
Recirculate simply draws some air from the cabin and mixes it with some fresh air. So there is still an overall front-to-back movement of air but it's volume is reduced because some of the air is drawn from within the cabin. I don't know the exact location but I imagine it is down low.
Could be, I haven't checked those out.
Uncle Paul
Well-Known Member
Modern vehicles are designed with pressure relief so that if the airbags go off in an accident it does not destroy your eardrums.
Model 3 has lots of airbags.
Block them at your own risk.
Model 3 has lots of airbags.
Block them at your own risk.
NeverFollow
Active Member
I noticed this rear vent in a Toyota Prius Prime, but I think this is used to cool the 8 kWh battery.
Yes, it is. It is there in all-Prius models. There is a blower behind rear seat in the trunk in that area to cool the Hybrid battery. But it runs rarely or very quiet.I noticed this rear vent in a Toyota Prius Prime, but I think this is used to cool the 8 kWh battery.
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