If Tesla uses the ST TDA7576B amp, it does create a half VCC reference (12V from local 24V supply) with the other terminals handling the audio.
https://www.st.com/en/automotive-infotainment-and-telematics/tda7576b.html
Pins 8/9 are audio to the passive (no internal electronics) tweeter. They aren't DC power sources.
Any voltage there is because the audio amp in the left control module is biased to that potential.
The amp can put out 12V on both 8 and 9 resulting in 0 volts across the tweeter when idle.
Same...
Sticker consumption is energy from the wall so includes charging losses. In vehicle is based on energy used driving.
373.4 Wh/mile (391.6 - 18.2) is 329 mile range. AWD with Core wheels is rated at 325 or ~378Wh/mile.
I think the article overextrapolated.
They could have a road illumination light source and a separate matrix of lower power UV LEDs that modify the film.
Or just use one of the types of shutter in the claims.
The Cybertruck system is better (when it works) because each module can handle three phase lines plus neutral. So it's Europe/Australia / CCS-2 ready three phase ready (with a different ACJB).
The other vehicles have three two-line input modules so that they can be wired for three phase or single.
I think the article went a bridge too far in extrapolation.
The shutter effect would allow separating the illumination function from the segment function. However, matrix lights still need the optical path to create the pixels. Adding a film to the front lens would be akin to a big bug...
That code means the PCS couldn't talk to the battery management system . The left controller also had comm issues to the battery.
None of the DCAC codes, more likely a battery, DCA, or harness issue.
OP said the cells are new, but pack is refurbished .
Sounds like new case and cells with less than new ancillary components. Pyro fuses, PCS, DCA, busbars, harnesses ...