Hello guys,

Since a couple of days when I start my car during cold days (it's winter here) I always hear a small "buzzing" sound after 30 seconds and it last no more than a second ?

The sound get "louder" if the temperature is really cold.
I can't hear it from the outside of the car, only while I'm inside.

Also, if it's not that cold outside the car won't do that weird sound.
I was thinking it's something like the AC compressor but I'm really bad with cars in general

My questions is : Is it a normal sound ? Have you ever heard that kind of noise while starting a car in a cold weather ?

Here is the video : https://photos.app.goo.gl/4fkFVfbjZJLNx21n9

Thank you in advance for your help and time guys !
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Never heard that before!

For those trying to listen, the sound is later in the videos and sounds kind of like a slight engine rev mixed with a rattle/vibration.

 

Thank you for listening the videos and trying ScytheDC !

Unfortunately Lexus dealer isn't able to tell me what makes this sound too....

All I can remember is the first time I've heard this sound it was after the first lexus service. (The personalisation of the car and settings)

Do you guys think it could be possible ?

On my opinion it doesn't sound like something is "broken". I just want to know what is making that sound ahahah :')