2025 AGT Crosswind Knocking Noise

Smitzer

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I just finished a 3100’ish mile road trip along I-80 in my 2025 AGT, including travel through Wyoming and Nebraska and Iowa. Really good experience with comfort and charging.

One consistent problem, too:

Whilst driving at freeway speeds (or a little faster, maybe up to 85mph or so), a strong crosswind produced a constant knocking noise that seemed to emanate from the front corners of the dashboard, mostly on the passenger side, but occasionally also on the driver side.

I am certain it was not coming from inside the glovebox or from anything we were carrying in the cabin, and not from the visors. I’m also quite confident that it was not coming out of material I was carrying in the frunk. I had a companion in the passenger seat, seatbelt fastened. My roof is the metal variety. (These are all things I thought might produce noise and I think I’ve ruled out).

Anyone else here experience that? Any tips or suggestions on how to investigate or remediate?
 
Are we talking a fast-paced noise like something flapping in the wind, or a slow beat? Metallic sounding or rubbery/plastic-y?
 
Fast-paced. Sounds more plastic-y. If it’s metal, there’s no ringing to it.
Open your frunk and front door(s). Where they meet you'll see two flexible rubbery pieces that are supposed to notch together. If they aren't overlapping, you'll get a flapping sound from the wind.

Here's mine on the quiet side:
1729198512922.webp


And on the flappy side:
1729198555011.webp


Duct tape there was the start of an attempt to lock the pieces down to ensure that's what was causing it. Currently I have some residue-free duct tape and foam holding the two pieces steady and it has fixed the problem enough that I'm waiting for something else to pop up before having service take a look.
 
Open your frunk and front door(s). Where they meet you'll see two flexible rubbery pieces that are supposed to notch together. If they aren't overlapping, you'll get a flapping sound from the wind.

Here's mine on the quiet side:
View attachment 23988

And on the flappy side:
View attachment 23989

Duct tape there was the start of an attempt to lock the pieces down to ensure that's what was causing it. Currently I have some residue-free duct tape and foam holding the two pieces steady and it has fixed the problem enough that I'm waiting for something else to pop up before having service take a look.
Thank you. I’ll take a look and follow-up here.
 
I see nearly the same thing, with less gap on the flappy side, but it’s not tightly overlapped. This photo is after I tried to fit the flappy side back together, but it won’t hold (without tape or something).

Flappy (and re-tucked by hand)
IMG_5920.webp


Tight:
IMG_5920.webp
 
Shoot. Those were both the same photo (flappy, passenger side), and I don’t see a feature to edit my post. Here’s the proper “non-flappy” photo.
 

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I'm about to tape this up...will share feedback shortly..!
 
I look forward to hearing about your results. Also interested to know what kind of tape you used and how you applied it.
Gorilla All Weather Outdoor Waterproof Duct Tape, UV and Temperature Resistant, 1.88" x 25 yd, Black, (Pack of 1) https://a.co/d/1NJuqjh

I'm using gorilla tape ..this link is for black, but I'm using white but the product is the same. I cut a strip of about 3 inches long, held the overlap tight by applying pressure on the black piece that sits between the frunk and the door, and as they overlapped, I stuck my cut piece of gorilla tape to the joint. I had to wiggle the tape in via chopsticks as it's a tight fit for my hands and then used the second chopstick to apply pressure on the tape so it stocks nicely. Hope that makes sense I just did this at 1.30am so will take it for a spin tomorrow after I wake up and report back! Will also add some pics of what it looks like now.

Some other post was also talking about the foam piece under the hood vent fluttering but I didn't touch it yet cos I want to first see if the duct tape fixed the issue first.
 
I look forward to hearing about your results. Also interested to know what kind of tape you used and how you applied it.
Unfortunately this also did not do it...the flutter remains..I taped both sides of the flappy thingy on driver and passenger side. Around 50 mph the flutter starts .. sad this didn't work ..I was hopeful...

Next I wish to try working the foam on the hood vents but don't know what exactly to do ..any ideas?
 
Unfortunately this also did not do it...the flutter remains..I taped both sides of the flappy thingy on driver and passenger side. Around 50 mph the flutter starts .. sad this didn't work ..I was hopeful...

Next I wish to try working the foam on the hood vents but don't know what exactly to do ..any ideas?
None. I sent an email to Lucid Customer Care for this a couple of days ago. I have not seen a response yet.
 
Open your frunk and front door(s). Where they meet you'll see two flexible rubbery pieces that are supposed to notch together. If they aren't overlapping, you'll get a flapping sound from the wind.

Here's mine on the quiet side:
View attachment 23988

And on the flappy side:
View attachment 23989

Duct tape there was the start of an attempt to lock the pieces down to ensure that's what was causing it. Currently I have some residue-free duct tape and foam holding the two pieces steady and it has fixed the problem enough that I'm waiting for something else to pop up before having service take a look.
@segbrk — Have you had service take a look yet?

Customer Care never replied to my email to them, so I bumped the message thread with them today.

I also included a link to this thread, in my email.
 
@segbrk — Have you had service take a look yet?

Customer Care never replied to my email to them, so I bumped the message thread with them today.

I also included a link to this thread, in my email.
Not yet, still putting it off :)
This is a service issue, so I'd just call your service center directly to set up an appointment.
 
sorry to come back to this thread so late! something i thought about the other week, have you checked if the trim clips exist/properly fastened to the wheel well area? i’ll try to take a picture asap to specify where exactly i’m talking about.

now… potentially may not solve your problem because i’m not hearing similar noises but also maybe… you may have more clips missing? i am throwing it out there though because you mention: 1) plasticy sound, 2) front corner areas of the dashboard (which is where wheel well area noise transfers into the cabin), 3) related to speed (the trim is vented to help cool the wheels)
 
sorry to come back to this thread so late! something i thought about the other week, have you checked if the trim clips exist/properly fastened to the wheel well area? i’ll try to take a picture asap to specify where exactly i’m talking about.

now… potentially may not solve your problem because i’m not hearing similar noises but also maybe… you may have more clips missing? i am throwing it out there though because you mention: 1) plasticy sound, 2) front corner areas of the dashboard (which is where wheel well area noise transfers into the cabin), 3) related to speed (the trim is vented to help cool the wheels)
Thank you for the suggestion. I will bring this up with the service technicians at my visit, if they don’t find the source as part of their process.
 
I dropped my AGT off today for service teams to take a look. I imagine they will take it out for road testing in / around the canyons around here, and I hope for plenty of wind.

I'm bumping this thread in case anyone else has encountered this lately, and learned anything further. I intend to keep sharing updates as I get them.
 
Update: I just went on a test drive with a Lucid technician to isolate the sound. We had no crosswinds, but were able to replicate the noise on some open freeway by getting up well over 100 mph (about 130, in one case—that was fun… especially with cops around—while I was driving :-) ), and then just letting off the throttle… as speed dropped into the low 90’s / high 80’s mph, the sound emerged prominently.

The technician I worked with seems to think it’s a drape under the hood (has video recorded through the windshield showing it moving rapidly to correspond with the sound), and when he detached it, he found further cause with the drape’s shape and flexibility (there was some unexpected flexing and warpage on parts of it) to support this idea. He plans to replace the drape and see if that resolves the problem.

Hope to have a fix or at least a solid update by Monday the 9th.
 
I have my car back, and took a photo of the culprit element. It was replaced and everything sounds good so far. Photo attached, with my finger over the replaced part. It’s only part of the whole drape assembly. I (poorly) traced a yellow line along the edges.

On the underside, there are thin rib / filaments that run across which were bent / warped, and the technician also though the whole component had too much flex in the plastic.

Hope that helps, in case anyone else is facing a similar problem.
IMG_6217.webp


Sidebar: Separately, the technicians applied sound dampening butyl tape to improve car audio. I thought I’d read in a few places here that this was a pre-requisite to firmware upgrade I’ve already received. I asked my Lucid Service contact, and she said tape was not a pre-requisite, and they just apply as needed on service calls. Based upon other people’s reports here, it appears to me like some vehicles must have the tape before the upgrade, and others can be upgraded without it. I’m not sure what sets the distinction.

Tagging: @vav493 @segbrk @lucidtouringman
 
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