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February 9, 2023 Service bulletin

Some 2013 ? 2020 model year Lexus vehicles may exhibit a hard start and/or MIL ON condition with one or...

Lexus technical service bulletin LSB000523 for 2018-2020 Lexus ES350, 2017-2020 Lexus RX350 and 2017-2020 Lexus RX Hybrid and others.

Bulletin number
LSB000523
Component
Electrical system: instrument panel: fuel gauge
Summary
TSB: Some 2013 ? 2020 model year Lexus vehicles may exhibit a hard start and/or MIL ON condition with one or more of the following Diagnostic Trouble Codes (DTCs): ?DTC P0171 and/or P0174 (System Too Lean Bank 1/Bank 2) ?DTC P0087 Fuel Rail / System Pressure ? Too Low Techstream data list analysis may reveal positive fuel trims including a no pressure condition verified by a manual fuel pressure gauge. Follow the Repair Procedure in this bulletin to address these conditions.

Owners of these vehicles have filed 35 complaints in the electrical category.

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