Whistle sound

[Tmoney]

Has anyone experienced a whistle sound coming from the engine area during a cold start under 25 degrees
It only does this when its cold outside. Dealer is a joke for finding this
They had my car for three days still couldn't hear the sound.

 

[elp_jc]

Record it, and post it, so we know what you're talking about. These engines are pretty noisy for the first several seconds after a cold start. If what you're talking about is a different sound, owners need to hear it to tell you if they also have it or not.

 

[Alan_F]

Has anyone experienced a whistle sound coming from the engine area during a cold start under 25 degrees
It only does this when its cold outside. Dealer is a joke for finding this
They had my car for three days still couldn't hear the sound.

A sound that disappears after the engine warms up is unlikely to be considered a problem by a dealer. GDI engines in particular are noisy when cold started. Also, when the tech starts the car and drives it from the parking lot into the garage area, it is already starting to get warmed up by the time he looks at it.

If you really want to know where the sound is coming from, use a vacuum cleaner extension tube with one end held to your ear and move the other end around in the engine bay to find out where the noise is the loudest.

 

[G-864921]

Has anyone experienced a whistle sound coming from the engine area during a cold start under 25 degrees
It only does this when its cold outside. Dealer is a joke for finding this
They had my car for three days still couldn't hear the sound.

I have a 2020 xc90 they replaced the oil trap box. The whistle is still there ( a lot milder but it still happens ) so it’s back to the dealer. Make sure you record it on the cold start under 40 degrees in my case .

 

[BOBNARIZONA]

I have a 2021 and it still has a whistling noise coming from the area of the side view mirrors. Dealer did part of an update but that didn't help. I noticed last week that when I really get tired of the noise that if I just barely lift or start to open the sunroof the whistling stops. But then I have the noise from the sun roof to deal with. Love the car so far but hate the whistling. Starts making the noise at about 75 mph and worse when there is a cross wind on the freeway. Dealer said they and Hyundai have given up trying to fix this know problem.

 

[Alan_F]

I have a 2021 and it still has a whistling noise coming from the area of the side view mirrors. Dealer did part of an update but that didn't help. I noticed last week that when I really get tired of the noise that if I just barely lift or start to open the sunroof the whistling stops. But then I have the noise from the sun roof to deal with. Love the car so far but hate the whistling. Starts making the noise at about 75 mph and worse when there is a cross wind on the freeway. Dealer said they and Hyundai have given up trying to fix this know problem.

If you are willing to spend some money on this, I would find a high-end custom auto stereo shop and ask them what it would cost to add some sound deadening material around the mirrors and/or door. They usually have a lot of experience taking apart door panels and adding sound deadening material. There are also some wind deflectors that can be added, as mentioned in some other posts.

 

[BOBNARIZONA]

I appreciate the suggestion but my son is actually a stereo / alarm installer. We have looked this over and are sure it is the wind hitting a small opening and creating the sound. Like blowing over the top of an empty bottle. Now the fun part will be finding that opening and sealing it off. I have tried tape around the base of the mirrors and a couple of other spots but no luck yet. And have mounted a 'wing' deflector in a couple of spots by the mirror and in front of the mirror. Still no luck. I'll let everyone know if and when I finally find the spot.