Tesla is taking a hard stance against a growing trend of "jailbreaking" its vehicles to enable Full Self-Driving (Supervised) in regions where it isn’t available. Over the last few months, a gray market has surfaced for unauthorized USB-like devices that can unlock FSD in countries where the software isn't officially supported. Now, Tesla is fighting back with a wave of warnings to owners, starting with a major crackdown in South Korea.
According to Tesla watcher @tslachan, the automaker has begun mass-emailing owners regarding the use of unauthorized devices to make changes to the FSD software. These messages, which are also appearing as in-app notifications, clarify that Tesla is well aware of the workarounds and is prepared to pull the plug on anyone caught using them.
How These "Jailbreak" Devices Work
The gadgets in question — often priced around 500 euros — typically plug directly into the vehicle's Controller Area Network (CAN) bus. The CAN bus is essentially the central nervous system of the car, controlling everything from the windows to the steering. By intercepting these signals, the devices can bypass Tesla's geofencing and software locks.
This is particularly tempting in South Korea, where FSD (Supervised) launched last fall but is currently exclusive to U.S.-built Model S, Model X, and Cybertruck units. Owners of China-made Model 3 and Model Y vehicles, many of whom paid over $6,000 for the FSD package, are legally blocked from using it due to local certification delays. These "jailbreak" tools exploit that frustration, but they come with a massive catch.
Tesla and Government Crackdowns
Tesla’s official warning is clear: if you use these devices, you are 100% liable for any accident that occurs. The company also noted it reserves the right to refuse warranty repairs regardless of whether the device actually caused the damage. However, the situation in South Korea has escalated beyond just a company warning.
The South Korean Ministry of Land, Infrastructure and Transport (MOLIT) has issued its own warning, classifying the use of these hacking tools as a criminal offense. Violating the Automobile Management Act by arbitrarily modifying vehicle software can lead to up to two years in prison or fines of 20 million won (~$13,200 USD). Tesla has also flagged these devices as a "cybersecurity threat," meaning they may create vulnerabilities in the car’s software that hackers could exploit.
Official FSD Expansion is Coming
While the wait is frustrating, the legitimate path for FSD is expanding. Tesla is currently working through the "red tape" to bring FSD to more regions officially. The company expects to receive its first European approval in the Netherlands this April, which will likely trigger a rollout across the EU. And with the software already available on many South Korean Teslas, it likely won’t be long before the rest of the Hardware 4 (HW4) fleet in the country gets access to it.
As Tesla works toward its goal of "unsupervised" FSD, the software is becoming more competent with every update. For a full look at which regions are next in line, check out our global FSD roadmap. Using an unauthorized device might seem like a quick fix, but with the risk of bricking your car, losing your warranty, or facing jail time, the "flick of a switch" just isn't worth it.
