Tesla has started remotely disabling FSD on vehicles using third-party “jailbreak” devices. The CAN bus hacks let owners activate FSD in regions where it isn’t approved. Owners risk losing FSD permanently, voiding warranties, and even criminal penalties. For years, Tesla owners outside North America have been stuck in Full Self-Driving purgatory. They paid thousands for the software, watched Tesla promise rollout after rollout, and then sat there staring at a grayed-out menu while U.S. drivers got all the fun. So some owners decided to stop waiting. According to new reports from around the globe, Tesla is revoking their access. Across Europe, China, Korea, Turkey, and other markets, Tesla drivers have used small CAN bus modules to bypass Tesla’s regional software locks. This allows them to activate Full Self-Driving even though Tesla isn’t allowed to do so. These devices cost around €500 ($550) according to Not A Tesla App. Once plugged into the car’s Controller Area Network, it can trick the car into thinking that it’s physically somewhere that FSD is allowed to function. Over the last few days, owners in Europe and Asia began receiving an ominous message inside their cars. “Your vehicle has detected an unauthorized third-party device. As a precaution, some driver assistance functions have been disabled for safety reasons.” In many cases, Tesla has reportedly stripped the car back to basic Autopilot, removing FSD entirely. From the automaker’s standpoint, it’s easy to see how CAN bus devices introduce security and safety risks. Beyond those potential problems, these owners are sometimes opening themselves up to legal issues. In Korea, the country’s Ministry of Land, Infrastructure and Transport reportedly considers these modifications illegal under the Automobile Management Act. Drivers caught using them could face up to two years in prison or fines of roughly $13,000. That is an extraordinary penalty for what started as a $550 shortcut to unlock a feature. A software update will be available soon pic.twitter.com/ejxkdbLzBt — Whole Mars Catalog (@wholemars) April 9, 2026 The timing is no coincidence. Tesla is evidently on the verge of finally getting FSD approved in Europe, with Dutch regulators rumored to sign off as soon as April 10. If that happens, a broader European rollout could begin shortly afterward. That means some owners may have risked their warranty, their software access, and possibly even legal trouble just weeks before the real thing arrived. On top of all this, the move points to a stark reminder to Tesla owners and, really, those who own any car that can be updated over the air. The registration might have a private citizen’s name on it, but a company with access and power can change that car’s capabilities overnight without consent. You may own the hardware in your driveway, but the software and the power to take it away still belong to the manufacturer. BREAKING 🚨 Tesla has removed FSD from certain vehicles. No update. No warning. Tesla has been reading vehicle logs for a long time and monitoring for abnormal behavior. Today, FSD was fully removed from vehicles with CAN FSD hacks. Cars were remotely woken up, modified,… — Tesla Inside (@TSLA_inside_) April 8, 2026
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