Whistle sound coming from engine compartment under light acceleration

[JustinB]

Here is the sound . The great people of Lexus say it is normal

Thank you. That’s it. It tends to fade in and out like that too.

 

[BLK GX]

the fact that some of you are hearing it probably means that it’s in all trucks and we might have better selective hearing than the rest of. But the question remains as to the root cause

 

[damooji]

Certain I’m hearing the same. Light throttle at any speed, to me sounds more like something metal spinning smoothly at high speed…idk. Will try to get some sound clips tomorrow.