It turns out that the big undocumented change in Tesla update 2024.32 that disables the 12V power and USB ports while Sentry Mode is active is not a bug but an intentional change.
A fan contacted Tesla Service to see if the change was intentional and what the reason behind the change was. Surprisingly, they received a response pretty quickly.
No 12V Power Access
Tesla has decided to restrict 12V power access for safety reasons—namely, to “reduce the likelihood of thermal events” when third-party devices are left powered on without users present. Tesla reached out to the fan in question by phone, and they seemed to be sticking to that line.
It seems that Tesla is resolute that it was due to safety reasons and that the change would not be “fixed” or allowed in a future software update – as this was an intentional change for safety reasons.
Other sources have reported that the change was due to potential misuse of the 12V power access, with people wiring 1200w microwaves and kettles or jury-rigging 240v to 120v adapters, which had apparently been the cause of multiple fires in Tesla vehicles within China.
Future Opportunity?
Update: A reader, bitcoinonymous, has recently talked to a service center rep who conveyed some encouraging news. He first apologized for the inconvenience and while he couldn’t guarantee any changes, he mentioned that there were a rumor going around that Tesla is reconsidering their approach.
Instead of completely disabling 12V power while Sentry Mode is active, Tesla sounds like it may be considering letting users enable the feature through a software option. By default, 12V power will be turned off with Sentry Mode, but you’ll be able to enable it if you need to use it. When you enable the option, you’ll need to agree to a waiver and say you understand the risks.
This sounds a lot like what Tesla does when you enable FSD for the first time. A dialog box comes up that you need to agree to before FSD is enabled.
This approach sounds promising and would please many Tesla owners who have already bought accessories for their cars.
Workarounds
There are a couple workarounds, although neither are ideal. You can tap in to the vehicle’s 12v line directly to power your accessories, or you can use Camp Mode.
If you choose to enable Camp Mode, then you’ll need to manually lock the car from the app since walk-away door locking is disabled with Camp Mode. However, Camp Mode will use extra energy to keep the climate system enabled.
We’re still hoping Tesla considers bringing the Cybertruck’s Power Control menu to the rest of its vehicles and is somehow able to limit the max draw from these outlets to prevent dangerous situations.
