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Fuel leak Published 14 Feb 2018 Ref JP-1141980

Lexus: Fuel Pump

Translated from Japanese · machine translation

Safety-critical recall — fuel leak. If your vehicle is affected, contact your dealer before driving.
Country
Japan
Published
14 Feb 2018
Units affected
4937
Reference
JP-1141980

Affected vehicles

Lexus GS F 2014–2017 Lexus LC 500 2014–2017 Lexus RC F 2014–2017

Hazard

In high-pressure fuel pumps positioned on the left and right cylinder banks of V-type engines, resonance generated during alternating pump injection causes fuel pressure fluctuations to exceed design specifications. This causes the pulsation damper (fuel pressure fluctuation damper) mounting section to slide and wear. Consequently, the damper may be damaged, generating abnormal noise and vibration. If operation continues in this condition, fuel leakage may occur in the worst case.
Show original (日本語)
V型エンジンの左右シリンダバンクに配置された高圧燃料ポンプにおいて、ポンプが交互に噴射する際に発生する共振により、燃圧変動が想定外に大きくなり、パルセーションダンパ(燃圧変動減衰器)の固定部が摺動して摩耗することがある。そのため、当該ダンパが損傷して異音や振動が発生し、そのままの状態で使用を続けると、最悪の場合、燃料漏れに至るおそれがある。

Remedy

Replace the high-pressure fuel pump with a corrected component on all vehicles.
Show original (日本語)
全車両、高圧燃料ポンプを対策品と交換する。

Official source

View the official recall notice