Your car is watching you. Modern vehicles continuously transmit telemetry — location, speed, fuel levels, hard braking events, interior camera footage, even microphone recordings — back to manufacturers, who then monetize this data through brokers like LexisNexis and Verisk. On May 13, a technical blogger published a viral guide on how to physically disable this surveillance apparatus in a 2024 Toyota RAV4 Hybrid, earning 529 points and 322 comments on Hacker News within 24 hours.

The Privacy Black Hole of Modern Cars

The author compiled a damning dossier of industry practices: Subaru had a 2025 vulnerability allowing remote unlock and real-time GPS access; Tesla employees internally shared sensitive camera footage of customers in 2023; a Mozilla investigation found 25 car manufacturers scored "abysmally" on privacy, collecting data on "sexual activity, immigration status, race, facial expressions, weight, and genetic information." All of this is enabled by default with meaningless opt-outs.

Physical Removal: A Medium-Difficulty DIY

The solution: physically remove the DCM (Data Communication Module) and built-in GPS. The project requires a trim removal kit, 10mm and 8mm socket wrenches, and a $90 DCM bypass kit to restore microphone functionality. After removing the shifter cover, center console panels, radio, and seat warmer controls, the author accessed the DCM — held by three 8mm bolts deep in the dashboard.

Critical caveat: Even with the modem removed, connecting your phone via Bluetooth allows the car to use it as an internet connection and resume telemetry transmission. The author switched exclusively to wired USB CarPlay to close this loophole.

A Bigger Signal

The post resonated because it highlights a systemic loss of consumer control. As one commenter put it: "Strong federal privacy laws would make posts like this unnecessary — that's the world I'd rather live in." But the author's concluding warning is sobering: it's likely only a matter of time before modems and GPS become so deeply integrated that physical removal becomes infeasible. In the absence of meaningful privacy legislation, a 10mm socket wrench may be the most practical data protection tool available.

📎 Source: Removing the Modem and GPS from my 2024 RAV4 Hybrid | 💬 HN Discussion: news.ycombinator.com