Hearing a rattle noise at low gear acceleration.

[Vision83]

I haven’t seen anything about the short block replacement of bearings being redesigned except from you here. Can you provide some backup for those statements?

This has already been reported by multiple people in this thread. Once more of these work there way through Toyota more information may come out. But we are limited to what Toyota releases and it's not in their interest to release much. Short block replacements on a brand new vehicle is not normal practice. If you go by previous history and how the engine recall was handled for the Tundra's, we can probably expect the same. But only time will tell.

I finally got some info on this after repeatedly mentioning the noise to SF Toyota - they are now recommending an engine swap - saying there is an issue with the short block. They logged an issue with Toyota directly long ago. No charge, but obviously concerning + disappointing. 2024 1st Edition, otherwise I might push for / request a full vehicle swap.

My Blackstone report was disappointing as well. My aluminum PPM was high which my indicates more bearing wear then I would like to see, Ill be following up with another sample in a few months. Attached report for reference.

 

[Impatient]

This has already been reported by multiple people in this thread. Once more of these work there way through Toyota more information may come out. But we are limited to what Toyota releases and it's not in their interest to release much. Short block replacements on a brand new vehicle is not normal practice. If you go by previous history and how the engine recall was handled for the Tundra's, we can probably expect the same. But only time will tell.

So you’re basing your categorical statement on a single incidence from this thread. That’s all I was wondering.

There are going to be single vehicles with issues from any manufacturer. Engine failures on a systemic level are something else. You continue to imply that it’s the latter when it appears to be the former.

Aluminum in the oil doesn’t mean bearings are being redesigned model wide. Where does that come from?

 

[Vision83]

So you’re basing your categorical statement on a single incidence from this thread. That’s all I was wondering.

There are going to be single vehicles with issues from any manufacturer. Engine failures on a systemic level are something else. You continue to imply that it’s the latter when it appears to be the former.

Aluminum in the oil doesn’t mean bearings are being redesigned model wide. Where does that come from

I think people in this thread would disagree and they can share their experiences as well. Like I said in the previous post I am not going to speculate on the direct cause and we may never know. I am just sharing my experience since dealing with this from July 2024. I stand by statements.

 

[Impatient]

I think people in this thread would disagree and they can share their experiences as well. Like I said in the previous post I am not going to speculate on the direct cause and we may never know. I am just sharing my experience since dealing with this from July 2024. I stand by statements.

Your experience is fine to share and appropriate. Extrapolating from it and inventing the idea that bearings are being redesigned model-wide (which only you have said) and that engine failures are endemic (doesn’t appear to be true) is sort of weird and irresponsible. Several people on this thread have noted that had loose materials causing noise issues that needed to be addressed - that’s an actual problem that is hopefully being addressed. Fear mongering at length really isn’t helpful.

 

[KyLandcruiser]

Your experience is fine to share and appropriate. Extrapolating from it and inventing the idea that bearings are being redesigned model-wide (which only you have said) and that engine failures are endemic (doesn’t appear to be true) is sort of weird and irresponsible. Several people on this thread have noted that had loose materials causing noise issues that needed to be addressed - that’s an actual problem that is hopefully being addressed. Fear mongering at length really isn’t helpful.

I read the V35A had a bearing re-design but nothing about the T24A. This engine goes in many vehicles and only the LC makes the noise. This makes me believe the noise isn’t the engine itself.

 

[Vision83]

Your experience is fine to share and appropriate. Extrapolating from it and inventing the idea that bearings are being redesigned model-wide (which only you have said) and that engine failures are endemic (doesn’t appear to be true) is sort of weird and irresponsible. Several people on this thread have noted that had loose materials causing noise issues that needed to be addressed - that’s an actual problem that is hopefully being addressed. Fear mongering at length really isn’t helpful.

Feel free to contact Toyota directly and ask them. 1-800-331-4331. Again I standby my statements and I know fully what they imply.

 

[Impatient]

Feel free to contact Toyota directly and ask them. 1-800-331-4331. Again I standby my statements and I know fully what they imply.

So are you saying that someone from Toyota told you they are redesigning the bearings and replacing the LC250 shortblock engines on a wider scale?

 

[Vision83]

So are you saying that someone from Toyota told you they are redesigning the bearings and replacing the LC250 shortblock engines on a wider scale?

I was told directly that my vehicle was approved for a short block replacement and there was a redesign to the main bearings. I do not know the scale.. but others have mentioned in this thread they were told the same thing (issue with the short block). If they would have pushed more and asked the exact cause they would more than likely get the same answer.

 

[Vision83]

Took mine to local dealer who reproduced the rattling noise after keeping it overnight. They compared it to the same model on their lot which also made the noise. Because of this, they deemed it "normal".

I was given a tip that their service techs are aware of this noise and said it happens on about half of the LC 250s. But they aren't allowed to disclose the cause. Very disappointing.

This is also the same experience we had and didn't get an explanation until we asked multiple times.

 

[BattleBorn]

Please post the video if possible.

I am disappointed to hear this is happening on a 2025 as well. Keep us updated.

It is difficult to reproduce in park and generally the engine must be under load.

yes, mine too

 

[kblc24]

For those following along I pressed the service dept tech for addtl info and he wasn’t able to share much. They reiterated that replacing the short block may resolve the noise, which may (or may not be) caused by an issue with something in the crank/oiling passage/main bearings.

There are other threads where piston slap has been mentioned for this same specific noise. It seems there is just still not consensus on what’s going on here.

Tech was not able to confirm that replacing short block would resolve the issue so I am going to hold off. This service dept has not performed this repair on any other vehicle as of yet.

Don’t want to take apart a brand new engine until I get crystal clear info on what’s wrong, and confirmation that recommended work will solve the issue.

 

[solagbmw]

Thanks @kblc24 - I also just took mine in for it's 5K service and pressed on the service techs to re-create the noise and they were able to hear it. They contacted Toyota corporate, and corporate told them "we're aware of this noise/concern, but as of now they don't think it is causing any harm to the vehicle, and there is no fix at the moment". My dealership was able to hear the same noise on a new LC250 they had on the lot. But essentially they just said it's now documented with Toyota corporate and they've recognized the issue, are aware of it, but were not able to say what's causing it and essentially just said to live with it. So no consensus or answers yet.

 

[Vision83]

For those following along I pressed the service dept tech for addtl info and he wasn’t able to share much. They reiterated that replacing the short block may resolve the noise, which may (or may not be) caused by an issue with something in the crank/oiling passage/main bearings.

There are other threads where piston slap has been mentioned for this same specific noise. It seems there is just still not consensus on what’s going on here.

Tech was not able to confirm that replacing short block would resolve the issue so I am going to hold off. This service dept has not performed this repair on any other vehicle as of yet.

Don’t want to take apart a brand new engine until I get crystal clear info on what’s wrong, and confirmation that recommended work will solve the issue.

Thanks for posting. This process will go better for all of us by sharing information. I would also have your oil analyzed by Blackstone. If possible. I agree there is no consensus on the root cause or even what the noise is. I don't think Toyota really knows as well or maybe they do. They will send the short block back to engineering and it will be studied. With the level of aluminum found in mine it is concerning. Also I agree 100% Toyota needs to be transparent and confirm that a engine replacement is even going to fix the root cause. Also know many parts are transferred with a short block replacement, a long block would be the better route to go if some parts have been exposed to high metal content.

 

[Vision83]

Thanks @kblc24 - I also just took mine in for it's 5K service and pressed on the service techs to re-create the noise and they were able to hear it. They contacted Toyota corporate, and corporate told them "we're aware of this noise/concern, but as of now they don't think it is causing any harm to the vehicle, and there is no fix at the moment". My dealership was able to hear the same noise on a new LC250 they had on the lot. But essentially they just said it's now documented with Toyota corporate and they've recognized the issue, are aware of it, but were not able to say what's causing it and essentially just said to live with it. So no consensus or answers yet.

This is what I was told in October/November 2024. Fast forward to toady and full engine replacement. They really like to use the terms "as of now" or "at this point in time".

 

[EOD Guy]

Thanks for posting. This process will go better for all of us by sharing information. I would also have your oil analyzed by Blackstone. If possible. I agree there is no consensus on the root cause or even what the noise is. I don't think Toyota really knows as well or maybe they do. They will send the short block back to engineering and it will be studied. With the level of aluminum found in mine it is concerning. Also I agree 100% Toyota needs to be transparent and confirm that a engine replacement is even going to fix the root cause. Also know many parts are transferred with a short block replacement, a long block would be the better route to go if some parts have been exposed to high metal content.

A "short block" is normally the lower part of the engine..... Block, rods, pistons, camshaft...... sometimes the water pump/cover if it's incorporated into the block/oil pan. The heads and any bolt ons are not usually included.

 

[Vision83]

A "short block" is normally the lower part of the engine..... Block, rods, pistons, camshaft...... sometimes the water pump/cover if it's incorporated into the block/oil pan. The heads and any bolt ons are not usually included.

I agree. My issue with a short block replacement is what about all the parts transferred from the old engine. Have those parts been compromised by having high levels of metal in the oil? Do they just clean them out and call it a day?

 

[EOD Guy]

I agree. My issue with a short block replacement is what about all the parts transferred from the old engine. Have those parts been compromised by having high levels of metal in the oil? Do they just clean them out and call it a day?

All the rotating parts would be replaced and the only parts (not being replaced) that I can think of would be affected by oil, would be the heads (and head parts) and those would be cleaned before reassembly. Basically you'd have a brand new engine with used heads (however many miles were on them).

 

[arash]

This issue sure escalated quickly. I’m hoping the sound is something less critical than an internal engine problem, but going to watch this closely. I do wonder if there are multiple kinds of rattles being talked about around this thread, some of which may be more benign.

This engine is supposedly shared with multiple other Toyota and Lexus vehicles including high volume ones like the Highlander. Maybe they messed up somewhere when tweaking it to suit the Land Cruiser.

 

[shwazz714]

Excuse me for the ignorance as I’m not a big car guy - but if there really is a systematic issue and Toyota will fix/replace engines, is that really the end of the world? To me if this issue is real and you get an engine replacement, that could be a net benefit (except for the time you are out of the car) and assuming it’s not like your full engine blows. Would this issue cause problems to other part of the car that wouldn’t be solved by an engine replacement? If so, wouldn’t Toyota also work to fix/replace those parts?

I have a 10yr 125k platinum warranty so I imagine if this is a systemic issue it’ll be covered in this range…

 

[shwazz714]

Also… i definitely had the rattle early on. I’m at 13.5k miles on a first edition and this morning I didn’t hear the rattle. I’ll keep monitoring as I’ve kind of forgotten about it (assumed it was normal) until I read this dooms day thread yesterday