Hey, good find. Very interesting read, but the last post there was in 2018, with no answers. But at least there's hope we could change the seatback with some FORScan programming changes... but wouldn't know where to start. And we can't just start messing with it blindly, since we could cause damage.
The seats have their own electric cooling units (TED) inside the seats. They are not just blowing cold air inside the cabin through the seat. Based on many posts in this long thread, there isn't enough air flow through the seat back to get the hot air created by the TED operation, and it overheats the TED unit and then the cooling performance falls on it's face on the seat back. The seat bottom seems to have adequate flow to get rid of the TED heat and stays cool.
That's what I do anyways.
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Well, there's no TSB on my 2019 Bullitt seats, so at least that's different from your 2015 ones. I think they changed in 2018, but not sure what. At any rate, what's the TSB all about? And what's that 2nd mod you mentioned? I already use bi-level A/C since day 1, due to too much air volume just from the dash vents, so that's done. The back seat cover modification looks interesting, but not going to remove the seats for that. Too many possible issues with the airbags, for what I've read.
The TSB was to add the air sock thing and I think a revised fan unit. Those changes were standard in later model Mustangs so no TSB for them...the Darko mod was a former user on the forum that molded fan shrouds that allowed 3 1 inch tube to connect to it, those tubes were routed under the seat to the front to pull in cool air from footwell. The Swiss cheese mod does not require pulling the seat, it I recall, from the back seat, you unclip the retaining straps under the seat that keep the seat back cover tight. Then you pull it up slightly and reach in and pull out the plastic sheet. It’s sort of captured in an envelope type fabric contraption. The plastic is roughly credit car thickness, I used a drill press and really large drill bits to make the additional holes...it slides back in easily...what is a big problem is the unit creates heat as a byproduct of blowing cold, the heat is supposed to escape the perforated holes in the back of the seat, many of which are in the map pocket, so if you force the map pocket open, it doubles the space heat can escape....
Would you mind reposting your detailed information because the links are no longer working or available. Thanks.. Ford says they can’t find anything wrong with my seat coolers but most of us unlucky ones know that they are very poor in performance. I would definitely try to use anyone’s suggestions and methods to improve them on my Bullitt.The TSB was to add the air sock thing and I think a revised fan unit. Those changes were standard in later model Mustangs so no TSB for them...the Darko mod was a former user on the forum that molded fan shrouds that allowed 3 1 inch tube to connect to it, those tubes were routed under the seat to the front to pull in cool air from footwell. The Swiss cheese mod does not require pulling the seat, it I recall, from the back seat, you unclip the retaining straps under the seat that keep the seat back cover tight. Then you pull it up slightly and reach in and pull out the plastic sheet. It’s sort of captured in an envelope type fabric contraption. The plastic is roughly credit car thickness, I used a drill press and really large drill bits to make the additional holes...it slides back in easily...what is a big problem is the unit creates heat as a byproduct of blowing cold, the heat is supposed to escape the perforated holes in the back of the seat, many of which are in the map pocket, so if you force the map pocket open, it doubles the space heat can escape....
so in the pics attached, the shiny part is the black plastic sheet in a thin fabric retainer. I believe the large round holes are supposed to be for air flow, but you can see only a few small holes are in the plastic( Blue arrows...). The blue square is the mesh above the map pocket, the red area is the thin fabric inside the map pocket....the fabric is thin enough to allow airflow. Half of the plastic sheet is at a level inside the map pocket. So I Swiss cheesed it, and got a bird suet food holder from Walmart and dropped it In The map Pocket.($3). With the added holes and the map pocket allowing airflow That affectively multiplied my exiting airflow about 5x, allowing the cooling unit to actually function....try the $3 thing from Walmart first!
I went 6 months before marking my territory when mine was new. It made no difference, seats were still not cooling that well.
I can tell mine are cooling efficiently after eating cheese, chicken and sausage enchiladas with rice and beans for lunch .............. Washed down with a cold Quavo.
There's also a warning statement about turning on the electric cooler that can spark off a methane gas explosion.
