
To clean the evaporator core in a 2019 Lexus ES 300h, you'll need to access the HVAC system, likely by removing the dashboard's lower trim panels. This process involves using the Toyota Genuine A/C Evaporator Foam Cleaner Kit to apply foam through either the evaporator drain tube or by direct coil access, allowing it to expand and remove contaminants before reassembling the vehicle.


