L-SB-0009-22

TSB: Some 2018 ? 2020 model year LC 500 and LC 500h vehicles may exhibit one of the following HVAC conditions: ?Uneven temperature or air flow between the vents. ?Little or no air flow from the vent(s). ?Improper MODE control function. Additionally, some vehicles may store one or more of the following HVAC servo Diagnostic Trouble Codes (DTCs): ?B144A ? Air Outlet DEF Damper Control Servo Motor Circuit ?B1441 ? Air Mix Damper Control Servo Motor Circuit (Passenger Side) ?B1442 ? Air Inlet Damper Control Servo Motor Circuit ?B1443 ? Air Outlet Damper Control Servo Motor Circuit ?B1446 ? Air Mix Damper Control Servo Motor Circuit (Driver Side) ?B1453 ? Air Outlet Damper Cool Control Servo Motor Circuit (Driver Side) ?B1454 ? Air Outlet Damper Cool Control Servo Motor Circuit (Passenger Side) ?B1455 ? Air Outlet Damper FOOT/DEF Control Servo Motor Circuit (Driver Side) Follow the procedures in this bulletin to address this condition