Tesla is preparing to roll out a software update that will re-enable power to its 12V sockets and USB ports even when no one is inside the vehicle. The feature, called “Accessory Power,” offers a more flexible way to keep devices like portable fridges and electronics running without requiring the vehicle to be in Camp Mode or Sentry Mode, or actively occupied.
Last year, Tesla quietly removed the ability for 12V power outlets and USB ports to remain active when a vehicle was parked and unoccupied. This change, introduced in software version 2024.32, affected all Tesla models and was not noted in the official release notes. Only upon checking updated owner manuals did we learn that the outlets were now only active when someone was in the driver’s seat or interacting with the touchscreen.
Tesla’s rationale for the change centered around safety and battery preservation. The company sought to prevent possible overheating or fire hazards from high-power third-party accessories left plugged in indefinitely. Additionally, Tesla aimed to avoid customer complaints related to excessive low-voltage battery drain.
However, the move frustrated many owners who rely on their vehicles to power devices while off hiking, camping, or simply away from their car.
Tesla has heard this feedback and, like they have done many times before, are preparing to reintroduce the feature, but with added safety controls and limitations. The new “Keep Accessory Power On” setting will be accessible under Controls > Charging and will allow users to power all 12V sockets and USB ports, including high-power 12V plugs found in the rear of some models, even when no one is in the vehicle, according to Not A Tesla App.
Unlike one of the previous workarounds—activating Camp Mode—this new toggle won’t force the climate control system to stay on or disable walk-away locking. It provides a targeted solution for accessory power needs, allowing owners to leave a fridge or charging station running without unnecessary battery drain from other systems, like Sentry Mode.
Tesla has also made it clear that this setting will only keep power flowing if the vehicle’s battery is above 20%, like other battery-intensive features. Once that threshold is reached, the system will shut off to prevent deep discharges that could impact long-term battery health. Tesla warns that even if no devices are plugged in, the system will still consume a small amount of standby energy, so users are encouraged to toggle it on only when needed.
For many Tesla drivers—especially those who enjoy road trips, van-life camping, or simply keeping drinks cold while out and about—this feature is more than just a convenience. It restores key functionality that was heavily relied upon by owners with trunk-mounted fridges, air pumps, or other accessories designed for long periods of unattended use.
While the feature is not yet live, it is expected to launch in a future version of the 2025.8 update or as part of Tesla’s broader Spring Update, which traditionally includes a slate of new features, and is expected to roll out in the next month or so.
