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Discussion Starter #1
Hello,

Recently bought a 2019 GC Trailhawk. I have noticed since new that both front mirrors will whistle between 45 and 75MPH. If I retract the mirrors, the sound goes away. I have an appointment next week to have it looked at, but I have very low expectations from them and am assuming they are going to use the lazy excuse "they all do that" to get out of fixing anything. Thus, I wanted to gauge experience from others.

Thanks!
 

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I just bought the same exact vehicle a week ago and I'm having the same issues. The whistle is coming from where the clam shells come together on the side facing the windows. Very poor design. Taking my car in on September 28 2019 to see what they can do. Plus the car has other issues including wind noise coming through the seals at the top of the doors.
 

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Discussion Starter #3
I actually have the wind noise through the door seal issue as well. Are the mirrors a different design from 2018 or older models? They looked the same as the one on the 2017 I test drove. Seems like Jeep didn't do any NVH testing of the mirrors. I expect that of Chrysler/Fiat, I suppose. Cheapest possible solution, throw it out the door and play the deny game with customers. I do have an appointment next week for them to look at it, but as I said before I am expecting them to blow me off.
 

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Hello,

Recently bought a 2019 GC Trailhawk. I have noticed since new that both front mirrors will whistle between 45 and 75MPH. If I retract the mirrors, the sound goes away. I have an appointment next week to have it looked at, but I have very low expectations from them and am assuming they are going to use the lazy excuse "they all do that" to get out of fixing anything. Thus, I wanted to gauge experience from others.

Thanks!
I just bought the same exact vehicle a week ago and I'm having the same issues. The whistle is coming from where the clam shells come together on the side facing the windows. Very poor design. Taking my car in on September 28 2019 to see what they can do. Plus the car has other issues including wind noise coming through the seals at the top of the doors.
Hi WildBTK & WineTraveler,

We certainly understand why this would be concerning. If it would be of interest, we would be happy to have your concerns documented and connect you with case specialists for an additional layer of assistance as you work with your dealers. Please follow up with us via private message to proceed in this manner.

Mark
Jeep Social Care Specialist
 

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Discussion Starter #5
I just bought the same exact vehicle a week ago and I'm having the same issues. The whistle is coming from where the clam shells come together on the side facing the windows. Very poor design. Taking my car in on September 28 2019 to see what they can do. Plus the car has other issues including wind noise coming through the seals at the top of the doors.
Utilizing your response, I confirmed the whistling goes away with taping about a 2 inch section of the mirror where the two halves meet. I could probably come up with a clean solution for this myself, but would prefer the dealer fix it...or perhaps they'll make it worse.
 

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UPDATE
NW Jeep [dealer] took the car in for service. Found that the door seals and window seals were defective. Replaced. Wind noise problem resolved.
Dealer service was unable to replicate the side view mirror whistle. It was raining those days - so no, it will not whistle then as the moisture bridges/fill-in the gap. Not their fault - but the problem persist on nice days sigh
Now my jeep has a nasty rattle in the panoramic roof, passenger side near the rail. So... Back to the dealer it goes - again.
 

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Discussion Starter #8
UPDATE
NW Jeep [dealer] took the car in for service. Found that the door seals and window seals were defective. Replaced. Wind noise problem resolved.
Dealer service was unable to replicate the side view mirror whistle. It was raining those days - so no, it will not whistle then as the moisture bridges/fill-in the gap. Not their fault - but the problem persist on nice days sigh
Now my jeep has a nasty rattle in the panoramic roof, passenger side near the rail. So... Back to the dealer it goes - again.
Interesting. The dealer applied some silicone to the gap on the driver's mirror and that solved the problem. They then used seam sealer on the passenger side one and it came out looking like crap. After another visit, the dealer replaced the passenger side mirror entirely. They did not bother to fill the gap on the passenger mirror and, of course, it whistles. I am just going to fill the gap myself. No other wind noise issues for me. Sorry to hear a new rattle has formed for you in the sunroof. I am guessing the brakes in your JGC work perfectly fine; mine don't (the vehicle pulls to the left), so I guess we each have our own problem paths we are following.
 

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Interesting. The dealer applied some silicone to the gap on the driver's mirror and that solved the problem. They then used seam sealer on the passenger side one and it came out looking like crap. After another visit, the dealer replaced the passenger side mirror entirely. They did not bother to fill the gap on the passenger mirror and, of course, it whistles. I am just going to fill the gap myself. No other wind noise issues for me. Sorry to hear a new rattle has formed for you in the sunroof. I am guessing the brakes in your JGC work perfectly fine; mine don't (the vehicle pulls to the left), so I guess we each have our own problem paths we are following.
Thanks for the reply. I was thinking to seal the gap with silicone as well - ideally from the inside of the mirror shell. Seems Jeep does not have a good fix for this.
If the seam was straight [where the two halves come together] - this issue would not exist. The issue seems to occur where the seam curves - making a perfect whistle by design. Most auto makers use a solid shell or design it with seams that are straight and not in the wind path. It is just a bad design for these black-n-grey two piece side view mirror housings.
 

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Discussion Starter #10
Thanks for the reply. I was thinking to seal the gap with silicone as well - ideally from the inside of the mirror shell. Seems Jeep does not have a good fix for this.
If the seam was straight [where the two halves come together] - this issue would not exist. The issue seems to occur where the seam curves - making a perfect whistle by design. Most auto makers use a solid shell or design it with seams that are straight and not in the wind path. It is just a bad design for these black-n-grey two piece side view mirror housings.
I have said it before: Jeep did not do much NVH work on the WK2 platform and this particular issue with whistling is the type of stuff that any rookie engineer worth their salt would've caught if given the opportunity. I am assuming the bean counters run everything at FCA and so "CHEAPER! CHEAPER! CHEAPER!" is the mantra and it shows in basic problems like this. I recently filled out my car-purchase feedback from Jeep and made sure to mention this whistling sound and they even gave me a graphic to mark where the sound was coming from. I am sure my feedback was just thrown in the bit-bucket so it won't matter.

That being said, at least it's a problem we can solve on our own, even though it shouldn't be one we need to deal with.
 

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UPDATE
NW Jeep [dealer] took the car in for service. Found that the door seals and window seals were defective. Replaced. Wind noise problem resolved.
Dealer service was unable to replicate the side view mirror whistle. It was raining those days - so no, it will not whistle then as the moisture bridges/fill-in the gap. Not their fault - but the problem persist on nice days sigh
Now my jeep has a nasty rattle in the panoramic roof, passenger side near the rail. So... Back to the dealer it goes - again.
Hello WineTraveler,
Please keep us updated on your dealer visit. If you need additional assistance please reach out to us privately.
Laura
JeepCares
 
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