Same engine, different turbos. Happening to LX600 too.

Should we be concerned?

 

I watched these videos last night. I remember 2022 Tundras having an issue with the wastegate but Toyota seemed to fix it.

2024 LX 600's and 2024 Tundras etc are having main bearing/spun bearing issues.

I love the way the GX 550 looks and would definitely consider one but Toyota HAS to fix these issues.

 

It's so hard to say what is causing this because the numbers aren't very large by all accounts on the internet. I read somewhere they thought on a Tundra batch of motors being put together, something with the single piece of metal that holds all the bearings down wasn't being cleaned properly or something to that effect. Also read it could be an actual design issue being one piece instead of individual pieces like traditionally done. Something to do with the possible one large piece being heated and cooled at different temps leads to a slight warping and that is causing it.

Think it's safe to say Toyota hasn't exam enough failures to draw any definitive conclusion yet. This issue dates back to 2022, one would think by now they'd track it down.

Personally, if it was a design flaw common sense would say they'd figure that out very quickly and I think the failure rate would be much higher. I'm thinking it's more of an assembly issue and that is why it's so hit or miss out there. They have sold a lot of vehicles with this motor. By far Tundra's seem to have the most issues. Maybe our saving grace is the GX is assembled in the Tahara plant opposed to the Texas plant like the Tundra. Time will tell.

 

It's earlier than that, Toyota has been using this engine in the Lexus LS500 sedan since 2018 MY:

https://www.clublexus.com/forums/ls-...own-motor.html

https://www.reddit.com/r/Justrolledi...r_replacement/

It's not surprising that Toyota would test this engine out in a much more limited production model (~8000 a year), but the presumption was that any issues they found in those limited production runs would be fixed before scaling up to putting this engine in the Tundra.

I'm looking to buy a new GX550 to offroad but this engine issue (along with the floppy hood at highway speeds) has me holding off a year or two.

 

I have been reading about this floppy hood at highway speeds issues here but haven't experienced this issue at all. Been driving at highways speeds for few days now and didn't noticed any thing like that.

 

I've only had my 550 for less than a week and noticed it at 55mph... It's towards the middle area. Doesn't bother me though, I was in a Civic for the past 7 years. lol

 

Toyota recalls that Twin Turbo v6.

https://www.clublexus.com/forums/gx-3rd-gen-2024-present/1023744-toyota-recalling-some-v35a-22-23-tundra-and-lexus-lx-vehicles.html

https://youtu.be/JQv8Y10mhSM

 

If there is concern of engine issues that have been identified in the V6 turbo I would just get a Blackstone Lab oil analysis done at each oil change. Should show if something is going on. They keep a pretty good database for comparisons issues.

 

Unless the manufacturing debris came from a supplier which shipped to both plants, I am trying to gain an understanding of how the issue is occurring with both the Tundra and LX600. Tundra is made in San Antonio TX while the LX600 is made in Tahara. Debris issues at two plants seems a bit surprising for Toyota/Lexus.

 

It's an issue because both US and Japan plants follow the exact same process. There was an inherit issue with the machining and block cleaning process which is why we both vehicles implicated.

 

***** happens, no one or thing is perfect, it is what it is. Fact is the internet doesn't know *****, only the engineers and manufacturers know what the real story is and 99% of videos and articles are created by people trying to attract attention and generate income. I'm an engineer and have worked in manufacturing for the last 20 years, so I rarely give any weight to data I cannot verify and am very skeptical of information from disgruntled customers or from a 3rd or 4th party. It pisses people off, but sample size and failure rate are really all that matter. Toyota has proven test methods, but as they enter new era's of technology and manufacturing those test methods will have to be refined.

My guess is that Toyota is working hard to resolve the issue, and will take care of it's customers.

 

Yep - but hard to decompose/de-confound early manufacturing issues and possible design flaws. My IS250's engine, being direct injection only, has a bit of a design flaw since that engine will always be prone to carbon buildup - so I guess it is fair for folks to be a bit concerned, or at least feel like they are buying into a higher risk/variance experience than they might have with an the last gen.