This cable allows you to resolve your own Tesla Roadster GPS Firmware corruption issues.
Since the summer of 2019, the Garmin GPS firmware has had a week number overflow firmware bug that causes the GPS to roll back to the year 2000.
Although this does not affect overall vehicle functionality, it does cause the timestamps in the log files and battery health logs to be recorded incorrectly leading to difficulty diagnosing faults.
Access to accurate log file information continuously being recorded in a Roadster is crucial in isolating faults, and establishing timelines for errors. It can also be useful in determining patterns and trend analysis for ESS Battery Pack condition and degradation.
For Roadsters in our Service Center, we developed this custom cable which allows you to reprogram and update the Garmin firmware to resolve this software bug.
With this cable plugged into the VMS harness, using the Garmin patch software, you can now resolve this yourself.
