Do you or any others here claim to know the specs. the cable was manufactured to.
Suppliers and materials used?
So far, people can only know what happens under certain conditions for some models, not understood why its not happening in other models in similar conditions with the same part, the Prime for example...
Used to work in high teach, and solar industries as an equipment tech for companies that manufactured capital equipment used in making semi conductors or solar cells.
different suppliers of parts, can and do make the same parts meeting the spec, sometimes using either a different build method or materials...that can change expected performance in certain conditions unknown at the time because the initial manufacturing specs were met.
Could be a number of different things...
with out knowing more information
One might ask
Why was not a blanket notice sent out to all in the model years affected
instead of using vin numbers
Why have not all those within the model yrs received a notice..yet..
The 2023 models appear to have no changes in cable design...
Are you saying Toyota Excluded certain VINs for 2019-2021 Model years for warranty extension? My understanding is all 2019-2022 Models are covered under extended warranty.
FYI, there are different Part numbers released for this cable, like you said, based on source, and other factors part number changes. I searched based on my VIN number, and the same part numbers is used for 2020,2021 RAV4 and Venza. Since Venza is made in Japan, all Japanese RAV4 also sourced the same cable. But for North American Market Cable part number seems different.
2nd question for you, if material changes is true for new part/cable and would not rust, why not issue extended warranty?
You may have not seen my previous post and my fix, its already started rusting in 1 year old Venza in a non-rust belt, like Seattle(we hardly have snow, we don't salt our roads here). I don't think its a some magic revised version on Venza. I don't want to wait for it to completely rustout and fight with Toyota about the issue when my car is disabled, thats why I took precautionary measures.
Please forget the notion that these companies are all knowing gods and know exactly what is correct material to use, and they always gets things right. If they are all knowing we would not be in this situation to start with.
Also forget the notion that they are noble and always take care if customer. For them Balance sheet/stock price is more important, not what is right. Once upon a time, Japanese companies were better in that regard (having worked for Japanese company), but those are not applicable anymore.