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What happens if you disable HV + 12V battery and close everything?

Dolemite

is my name
Sep 19, 2019
1,370
1,715
Seattle, WA
Of course it works lol. That’s how it was designed. Even the manual states this.

The thing is the manual is not always right and doesn't always apply to every version. It's still helpful to test things to verify.

And the question was whether it will still work with the high-voltage battery disconnected, considering it appears there's some amount of "intelligence" in place to recognize a charged vs. discharged 12V battery.
 

android04

Member
Apr 1, 2016
480
486
Southeast Nebraska
Good to know for sure that it works, but I didn't doubt. When the car is asleep or the 12v battery is dead, the HV battery is disconnected from everything by the contractors. That's pretty much the same as unplugging the harness under the rear seat. But in case anybody is ever unsure or doubts, we can link them right to this thread so they can see that Dolemite tested it and it worked.
 
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smatthew

Active Member
Jun 9, 2018
1,292
2,234
CA Bay Area
And the question was whether it will still work with the high-voltage battery disconnected, considering it appears there's some amount of "intelligence" in place to recognize a charged vs. discharged 12V battery.
It's been a while since I stared at the circuit board for vcfront but I seem to recall seeing the parts needed for an aux power supply and watchdog - all Tesla would need to perform/validate a "dead 12V, but 9V present at terminals" situation
 
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