AC stops working and blowing warm air when car is not moving, even for short time during red light stop. Someone said car may shutoff engine automatically and that may turn off AC? Sometimes even going on highway will not get AC going, need to pull-off and restart the car. But if AC is going, it will work very well for the entire trip, until next stop. This is a 2022 model.

 

Do you have the drive mode in ECO, or do you have the Climate system set to ECO. These are the only things I'm aware of that will limit the function of the AC system without there being a system fault.

 

Is it NX 300h or 350h?

 

you are right, 350h

 

Under settings in your center navigation screen there is a setting for ECO under HAVC settings. If that is on then the car will turn off the AC to reduce fuel consumption.