2020 NISSAN LEAF Visibilitywiper Problems

The defrost in my Nissan Leaf with does not function at all when the temperature is below around 10 degrees Fahrenheit. I found this out by having my windshield rapidly frost over while driving down the highway at over 65 MPH, almost causing a multi-vehicle accident because I could not see out of any of my windows. When I departed for my trip the vehicle had defrost functionality, but the ambient temperature must have dropped during my trip to the point where I can only assume the heat pump became disabled by the vehicle control systems, leaving only the Positive Temperature Coefficient (PTC) heater to supply defrost functionality. I assume that my PTC heater is somehow inoperative and thus resulted in the rapid frosting without any warning or indication to the driver. I see this as a critical safety concern as it affects vehicle visibility and defrost performance to where...

Nissan claims that a previous recall for Federal Motor Vehicle Safety Standard (FMVSS) number 111, Rear Visibility could be fixed with a system update (recall 20V412000). This does not appear to be the case. I had the system update run already in December 2022 and it didn't fix the problem. The rear backup camera still goes pink and is not visible. I believe this is a hardware issue and should be fixed because it is a major safety problem.

Defroster is not working at all. Spoke to dealer, needs new part and Nissan corporate. Nothing moving. Live in denver, having a working defroster is extremely important.