2024 GX Engine Recall? (4 Viewers)

[S SUBERI]

So are we to assume that all GX 550's produced after 4/10/2024 (if I recall the cutoff correctly) have the new bearing? or are some of us still driving around with the old bearing and no recall?

 

[bart]

Yes, my understanding is that Tahara build cars after the cutoff from 25V-767 were produced with new #1 main bearing design.

Also note that the bench testing Toyota describes in the new (26V-320) RMISC was performed on the old bearing, not the new, improved one. They are describing the nature / progression of the failure, and why the engines need to be recalled. Not why the improved bearing is the fix. I understand it as additional evidence of why the failure is binary - if the debris either adheres to the bearing or it doesn't. Once the debris adheres though, it doesn't matter if more is introduced or not, the bearing and the engine will fail all the same. They don't say if they've done similar study on the new bearing, and what were the results. Although, presumably, they've done exactly that, and the test showed that the new bearing is resilient enough to resist debris adhesion in the first place. Otherwise why would they replace the bearing and issue the long block replacement as the remedy?