Noise from under vehicle after turning off the engine

Lexus GX / Lexus GX Owners Manual / For your information / Noise from under vehicle after turning off the engine

Approximately five hours after the engine is turned off, you may hear sound coming from under the vehicle for several minutes. This is the sound of a fuel evaporation leakage check and, it does not indicate a malfunction.

    See also:

    Horn
    To sound the horn, press on or close to the mark. ...

    Adjusting sound quality and volume balance
     - Changing sound quality modes Press the “TUNE/SEL” knob. Pressing the button changes sound modes in the following order: “BAS” → “MID” → “TRE” → “FAD” & ...

    Operating an iPod
    Connecting an iPod enables you to enjoy music from the vehicle speakers.  - Connecting an iPod Slide the auxiliary box lid. Open the cover and connect an iPod using an iPod cable. Turn on ...