Lexus RX350 2010–2011 — technical service bulletin
Bulletin L-SB-0177-09 Rev · NHTSA communication 10132779 · issued Jun 16, 2014
Technical service bulletin
communication type
Back Over Prevention
component
2010–2011
model years
2
vehicle entries
Official summary
TSB: Some RX 350 vehicles may exhibit a condition where the HVAC system intermittently blows warm air from the vents with the A/C ON. When this condition occurs, Diagnostic Trouble Code (DTC) B1479 (Flow Sensor Circuit) may also be stored in the A/C system as either a Current or History DTC. A malfunctioning A/C compressor flow sensor may cause this condition.
Vehicles covered
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.