Lexus RX350 2018–2021 — technical service bulletin
Bulletin L-SB-0008-21 Rev · NHTSA communication 10198143 · issued May 20, 2021
Technical service bulletin
communication type
Equipment
component
2018–2021
model years
4
vehicle entries
Official summary
TSB: Some 2018 ? 2021 model year RX 350 vehicles may exhibit a MIL ON condition with one or more of the following companion cylinder misfire Diagnostic Trouble Code (DTC) combinations: ?P030100 and P030400 (Cylinders 1 and 4 Misfires Detected). ?P030200 and P030500 (Cylinders 2 and 5 Misfires Detected). ?P030300 and P030600 (Cylinders 3 and 6 Misfires Detected). One or more of the following ancillary DTCs may also be present: ?P030027 (Random/Multiple Cylinder Misfire Detected [Emission] Signal Rate of Change Above Threshold). ?P030085 (Random/Multiple Cylinder Misfire Detected [Over Temperatu
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.