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Service bulletin L-SB-0010-22

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10211803
Published by NHTSA2022-05-16
Manufacturer's numberL-SB-0010-22
Manufacturer's date2022-04-08
NHTSA componentENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; EQUIPMENT:APPLIANCE:AIR CONDITIONER

NHTSA's summary

TSB: Some 2018 ? 2019 model year LS 500 and LS 500h vehicles may exhibit one or more 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) ?B1448 ? Passenger Side FACE Servo Motor Circuit ?B1453 ? Air Outlet Damper Cool Control Servo Motor Circuit (Driver Side) ?B1454 ? Outlet Damper Cool Control Servo Motor Circuit (Passenger Side) ?B1455 ? Air Outlet Damper FOOT/DEF Control Servo Motor Circuit (Driver Side) ?B1456 ? Air Outlet Damper FOOT/DEF Control Servo Motor Circuit (Passenger Side) ?B1457 ? Driver Side Air Outlet Damper Control Servo Motor Circuit ?B1458 ? Air Outlet Damper Control Servo Motor Circuit (Passenger Side Front A/C Rear Air Flow) ?B148A ? Air Outlet Rear FOOT Damper Control Servo Motor Circuit (Driver Side) ?B148B ? Air Outlet Rear FOOT Damper Control Servo Motor Circuit (Passenger Side) ?B1486 ? Driver Side Air Outlet Damper Control Servo Motor Circuit ?B1487 ? Air Outlet Damper Control Servo Motor Circuit (Passenger Side Front A/C Air Flow)

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Engine, Equipment and accessories, Heating and air conditioning

Trouble codes named

B1441, B1442, B1443, B1446, B1448, B144A, B1453, B1454, B1455, B1456, B1457, B1458, B1486, B1487, B148A, B148B

Vehicles listed
LEXUS LS HYBRID2018 to 2019
LEXUS LS5002018 to 2019

Listing a model year does not mean every vehicle of it is concerned: the document says which.