Lexus LS Hybrid 2016–2018 — technical service bulletin
Bulletin L-SB-0022-18 · NHTSA communication 10142886 · issued Jun 20, 2018
Technical service bulletin
communication type
Equipment
component
2016–2018
model years
4
vehicle entries
Official summary
TSB: Some 2016 ? 2018 model year RX 350 and RX 450h vehicles may exhibit decreased front windshield defroster performance at extremely low ambient temperatures. This condition may be the result of the fresh/recirculation servo actuator separating from the servo, causing the HVAC system to become stuck in recirculation. This condition does not affect the airflow of the defroster. Follow the Repair Procedure in this bulletin to address this condition.
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.