2024 GX 550 hood ripple at highway speed.

[Yrag57]

When I spoke with my Service Manager earlier this week, he told me they have all the parts to fix the flutter problem except for some special clips. Once those clips arrive they will schedule the fix. Every dealer is probably a little different in their preparedness on this.
I also tried another workaround on my 2024, suggested by another forum contributor in a similar thread. There are two hard rubber or plastic ribbed stops affixed to holes in the frame on each side under the front portion of the hood. They contact the hood when closed. If you unscrew them (counterclockwise) they get taller. Make certain to keep them even with each other. If you go too high, the hood won’t close. But turning mine to where the hood just takes a firm thump to close took the flutter out of the front half of the hood. It still flutters from midway back though and those front contact points are the only ones that are adjustable.
There are two rubber grommets at near halfway back, but they don’t adjust. I have contemplated placing some sticky pads (like those felt things for chair legs, etc.), but haven’t had time to experiment yet. I don’t want to do anything that might warp the hood. It’s a big wide hood that we already know is flimsy, so be careful with any mods you try. I just cannot help worrying about how long this beautiful black metal flake paint can last with all that movement. And although not noticeable below 60 mph, that doesn’t mean it’s not flexing to some extent at much slower speeds.
Get on it, Lexus. Folks should be on forums to learn the finer points or exchange ideas about their purchases, not to try troubleshooting issues that should have been caught by engineers before production. We’re talking either one or two mils thicker metal, a center crease for strength, or underside bracing. It ain’t rocket science. I can’t speak for anyone else on this forum, but I bought my Lexus because I’ve consecutively owned and driven five Toyota vehicles since 1988. I’m retired and love to travel. Spending so much time on the road, my bride and I thought we would travel a bit more luxuriously in a Lexus (and overall we’re very impressed), but a flopping hood is poor doings. That’s all I have to say about that…

 

[incognito.gx]

When I spoke with my Service Manager earlier this week, he told me they have all the parts to fix the flutter problem except for some special clips. Once those clips arrive they will schedule the fix. Every dealer is probably a little different in their preparedness on this.
I also tried another workaround on my 2024, suggested by another forum contributor in a similar thread. There are two hard rubber or plastic ribbed stops affixed to holes in the frame on each side under the front portion of the hood. They contact the hood when closed. If you unscrew them (counterclockwise) they get taller. Make certain to keep them even with each other. If you go too high, the hood won’t close. But turning mine to where the hood just takes a firm thump to close took the flutter out of the front half of the hood. It still flutters from midway back though and those front contact points are the only ones that are adjustable.
There are two rubber grommets at near halfway back, but they don’t adjust. I have contemplated placing some sticky pads (like those felt things for chair legs, etc.), but haven’t had time to experiment yet. I don’t want to do anything that might warp the hood. It’s a big wide hood that we already know is flimsy, so be careful with any mods you try. I just cannot help worrying about how long this beautiful black metal flake paint can last with all that movement. And although not noticeable below 60 mph, that doesn’t mean it’s not flexing to some extent at much slower speeds.
Get on it, Lexus. Folks should be on forums to learn the finer points or exchange ideas about their purchases, not to try troubleshooting issues that should have been caught by engineers before production. We’re talking either one or two mils thicker metal, a center crease for strength, or underside bracing. It ain’t rocket science. I can’t speak for anyone else on this forum, but I bought my Lexus because I’ve consecutively owned and driven five Toyota vehicles since 1988. I’m retired and love to travel. Spending so much time on the road, my bride and I thought we would travel a bit more luxuriously in a Lexus (and overall we’re very impressed), but a flopping hood is poor doings. That’s all I have to say about that…

Thought it had to do with the adhesive not bonding? Engineers likely wouldn’t have experienced these issues pre-production

 

[DJ’s Sled]

I added my 2 cents in another thread, but to summarize:
My OT VIN is past the stated TSB range. VA dealership actually inspected mine, then did the same with a new 2025 on their lot. The production line ‘fix’ was same on both. Nothing was de-bonded on mine. Mine still flutters, beginning by 35mph. Pretty ridiculous.

 

[BETN]

@RickBullotta - the service bulletin indicates a Production Change Effective VIN of JTJTBCDX#R5020717. So theoretically, yeah it was addressed starting with that VIN, and anything later doesn't qualify for this fix. However, whatever they did obviously didn't eliminate the issue entirely according to @wlfkfgkwlak. Unless some 2025s are in that VIN range, i'm not sure.


If your service manager doesn't know about the flutter fix, ask them to lookup bulletin L-SB-0013-25 by number, or show them the PDF I posted above. They may not have got the memo, but it is out there.

My VIN fits in that range. I haven’t noticed any hood flutter. I got mine at Thanksgiving and have 10k miles on it, tons of highway driving.