Defroster/defogger/hvac System Condensor/evaporator problems of the 2020 Hyundai Santa Fe

The contact owns a 2020 Hyundai Santa Fe. The contact stated that occasionally while driving at various speeds in hot climate, the air conditioning failed to blow cold air. No warning light was illuminated. The vehicle was taken to a local dealer however, the failure could not be replicated. The vehicle was taken to a local independent mechanic for a second opinion, where it was diagnosed with an evaporator temperature sensor failure. The contact was informed that the evaporator temperature sensor needed to be replaced. The vehicle was not repaired. Upon further investigation, the contact related the failure to technical service bulletin: 21-ha-001h; however, the VIN was not included. The manufacturer was made aware of the failure. The failure mileage was approximately 29,000.