Lexus RX400h overheating issue with smoke from radiator in stop-and-go traffic on Lexus RX400h

Some Lexus RX400h owners report experiencing overheating issues, particularly in stop-and-go traffic, due to several potential causes. These include radiator blockage from debris like dust and dirt, which can lead to both overheating and intermittent A/C performance. Additionally, some owners have encountered coolant leaks, commonly from the radiator, resulting in overheating and dashboard warnings about water temperature. Another reported issue is radiator hose leaks, often indicated by smoke from the hood and pink fluid near the radiator. Furthermore, trapped air in the cooling system has been noted as a factor contributing to engine overheating. Lastly, insufficient airflow through the radiator caused by clogged fins from leaves and mud can further exacerbate overheating problems. It is crucial for owners to address these issues promptly to maintain optimal cooling performance and prevent further complications.