Hey GeneralDisorder!Heated Transparent Armor is 24v.
Under the passenger kick-panel is where you will find the control module and the circuit breaker module for the system. Remove the panel and the repair manual states the first step is to try resetting circuit breakers CB10X (position 10) and CB19X (position 19). Then check for operation of the heater.
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You are awesome! I am pretty sure that it is what we are looking for. My relative has not answered me yet if he revised this button but I think it is the roots of issue with windshield heater.
Thank you very very much for this help!