Lexus RX350 navigation system not functioning despite new SD card installation on Lexus RX350

Some Lexus RX350 owners report experiencing issues with their navigation system rebooting, which may be linked to erroneous data from Toyota's traffic and weather data service provider. Despite installing a new SD card, some owners find that the navigation system requires proper updates, which can be completed via SD card, USB, or DVD, highlighting the importance of following the correct update procedures. In certain cases, assistance from a Lexus dealer technician may be necessary, as they utilize a "Master USB" service tool and a one-time use code for updates, a process not typically handled by vehicle owners. Additionally, many Lexus owners across different models report similar navigational system problems, indicating a potential manufacturer-wide issue. Lastly, acquiring updated maps for the navigation system can be challenging, as reliable sources for these updates are essential to avoid compatibility issues.