Step-by-step physical removal of the DCM modem and GPS antenna from a 2024 RAV4 Hybrid to permanently stop Toyota telemetry at the hardware level.
Key Takeaways
Removing the DCM (part 86741-06130) kills OTA updates, Toyota cloud services, and SOS but leaves all driving functionality intact.
A $90 DCM Bypass Kit restores the in-car microphone by plugging into the vacated harness; no soldering required.
Bluetooth must be avoided post-removal: the car uses a paired phone as an internet uplink and resumes telemetry transmission over it; wired USB CarPlay does not trigger this.
The built-in GPS must also be disconnected because a residual bad location signal causes CarPlay to misplace position (e.g., San Francisco -> Nevada); process-of-elimination cable identification works without a Toyota TIS subscription.
Magnuson-Moss Warranty Act limits warranty voiding to telematics-related coverage only; unrelated failures like engine problems remain covered.
Hacker News Comment Review
Commenters challenged the Bluetooth-tethering claim, questioning whether phones expose internet to arbitrary Bluetooth devices; the underlying mechanism was not conclusively explained in the thread.
The data-sharing risk is partly self-inflicted: one commenter noted Toyota’s insurance data sharing is tied to an opt-in program that dealers aggressively enable during setup, not a silent default for all owners.
Easier alternatives exist on other platforms: the 2024 Ford Maverick has a single fuse removal with no error codes, and Kia has a hidden “Massachusetts mode” flag that disables telematics, suggesting manufacturer variance is high.
Notable Comments
@lucisferre: Independently motivated to do the same removal because Toyota denied and refused to fix a documented broken GPS/compass heading bug that breaks CarPlay navigation.
@everdrive: 2024 Ford Maverick telematics disabled via single fuse pull with no error codes thrown, a much lower-effort path than full DCM removal.
