Getting a high pitched ringing / buzzing noise after turning off the engine.

[02SilverSiHB]

I get it all the time...sounds like the LEDs...I get the same noise on my other car with LEDs.

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[MonkeyBoost]

Probably fuel pump or something. Mine does it as well and my 370z used to make very similar noises as well before it got completely silent. All normal.

 

[mrcivictyper]

My turn. I hear a buzz too but goes away when the headlights auto shut off.

 

[02SilverSiHB]

My turn. I hear a buzz too but goes away when the headlights auto shut off.

yeah, pretty sure that's all it is. At least for me. My Sorento is way freaking loud. My Sorento's LEDs, have those internal fans that make a lot of noise while their on.

 

[Gansan]

That's so weird because I hear the noise turn on and off without any lights being on.

 

[bobafettm]

I believe I've heard it without the lights etc and this sound hangs for quite some time after the car is turned off... I do not believe it's the lighting. I know like others my LED lighting has fans and you can hear them running while the lights are on.

 

[MonkeyConQueso]

It's definitely a motor of some sort (pump, fan, etc...). To my ears it sounds like a pump motor, but I have no idea specifically what. It's piquing my interest enough to try to figure it out at some point, just out of sheer curiosity.

 

[02SilverSiHB]

it will remain a mystery

 

[Chee_hu]

I'd have to say it's the LEDs as well as I've sat in the garage until they turned off and the noise went away the same time.

Could it also be the electronic parking brake? I know it's manually turned off/on, so you should be aware, but I was a bit concerned the first time I heard it.

 

[Vishnuns]

I have the same sound in little more high pitch in my honda civic turbo.
More like a resonating sound. The sound is greatly audible and you can't avoid that sound once you detect the sound. Second gear tightness during cold, oil dilution and then this issue and the dealership experiences, feeling scared purchasing Honda. Still hoping for the best. Will update further details here.

 

[Fc3_Si]

Wastegate is making that hight pitch noise when turning off the car or if its on/engine off

 

[CTRnFun]

Wastegate is making that hight pitch noise when turning off the car or if its on/engine off

Yep. If you key on engine off you will hear this. The Wastegate for sure.

 

[wildbilly32]

Yep. If you key on engine off you will hear this. The Wastegate for sure.

I always thought it was aliens...

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