Some time ago I mentioned that, after complaining to a Lexus service advisor about my ongoing trans hesitation (well it really became a trans jerking-while-finding-a-gear problem after last software upgrade) that he mentioned that Lexus had issued a TSB that stated the need for premium fuel after the upgrade. I doubted it and he couldn't find the TSB. I later found it online however, and he was right - it did state that. I still had my doubts about fuel being involved.
Some here said that it was possible for the octane level to affect the trans performance. I finally gave in, and have been using premium fuel for the past few thousand miles, and I have to say there is a big improvement. Yesterday I felt the jerkiness again though - but it was a minor episode compared to previous ones, and it was the first and only time since I started using premium.
Now, it's kind of academic though, because I've been looking into getting an '04 LS430. In doing my research on that vehicle, however, I learn that they had a recall on those 430s made in '03 whereby the trans is replaced ! I thought the worst thing on those cars was the air suspension. Now I have to worry about the trans on the LS430 I might buy !
Does anyone have any info on the 04 LS430 (6-speed) trans problem ?
(I suppose I should have started a new topic for this LS question.)