Here is the email i recieved from Lexus:
You may or may not have recently experienced difficulties related to the navigation display in your Lexus. We apologize for any inconvenience.Errant data broadcast by our traffic and weather data service provider was not handled as expected by the microcomputer in the vehicle navigation head unit (center display) of 2014-16 Model Year Lexus vehicles. In some situations, this issue can cause the head unit to restart repeatedly, affecting operation of the navigation system, audio and climate control features, and the hands-free mobile phone functions. The data suspected to be the source of the error was corrected Tuesday, June 7, at 11:00 pm PST. The correction is a forced reset and clearing of the errant data from the system.
I guess in the future, I will try the reset reboot of the system is I encounter a problem and a dealer is not nearby.
Lee