This is great info. His vids are my guide to maintaining my LS460.

 

not sure. most people have said to completely avoid doing a flush in a high mileage car

 

i like his vids but dont agree with his opinion that you shouldn't change the fluid if your car is over 100k miles. from personal experience the improvement was huge when i changed mine at 120k. also multiple people are reporting the same with their high mileage lexus

 

"Most people"? Who is that?

If you can't flush transmission, you can't do drain and refill.

 

Mandela effect.

 

1) The file you attached, was it for the LS460 specifically or was it for the Lexus AT in general?

2) Does our transmission come with an overflow tube inside the drain hole?

 

That pdf is for a 460 awd, the procedure is the same for all. There may be a small difference in fluid capacity but the level check would take care of that. There is a short metal non adjustable tube inside the pan, if you're thinking about the type that can be adjusted for checking the level at different temps yours doesn't do that, also it's not in the drain plug hole there is a pic of the overflow in the pdf.
The tube is about the same height as the mating surface of the pan or a small amount higher, I've never paid much attention to that as long as the tube is there.

If you plan on using the method in the pdf and you haven't done it before it wouldn't hurt to go through the steps a couple times before you do the actual drain n fill so you get comfortable with it and you will see how long it takes to get to temp and how long it stays in range.I don't like to use TS for the temp because the live info seems to be erratic at times.

 

My wife's Golf AT was made by Aisen(same company that made Lexus transmission), when I drained the fluid, there is an inner overflow tube behind the drain plug. If you just removed the drain plug, there is not much coming out.

But few months ago when I drained the ATF on the LS460, 3.7Q came out so I didn't bother to check to see if there was a tube which I didn't think it has it.

 

That is not how the AA80 is setup, it has a dedicated drain and dedicated check plug. Fill can be done from the divers side 24mm plug labeled "WS" or if a RWD car from the rear 17mm hex inspection plug.

 

My notes from his vids state that you should change the ATF at the mfg recommended intervals. If this has not been done and your car has high milage, then you will risk having gear slip.

I hope you get this resolved and share what you did for the rest of us to know what to do. Appreciate you sharing your experience, Trey, and best wishes for a quick and low cost resolution.

 

thanks for your wishes and thanks to the advice i got here i replaced all seals from engine to diveshaft(they had minor seepage), and the transmission filter and gasket. after another drain and fill along with a bottle of lubegard red atf protectant i am glad to say the slipping has completely resolved except for a minor jerk when shifting to reverse on an initial cold start. i have driven about 400 miles now and the gear changes are exceptionally smooth.hope it stays the same for the next couple of years

Again thanks for the advice from this forum

 

Nice, did you do that yourself? Is the leaking stopped?

 

no i did it at a local garage who had experience working on a lot of ls460. Its a major repair work though since the entire transmission had to come out so its something i could not do at home. The leakage has completely stopped but it was very minor initially itself, maybe one or two drops in a day

 

Aisin.

 

Nearly everything in this video is wrong. Old clutch particles do not improve grip in the slightest, this is like saying brake dust improves braking grip. Flushing a vehicle using the internal pump or an external pump at the right pressure will never cause an issue, I've done it on every vehicle I've owned as well as GFs and acquaintances. He's a good mechanic but he needs to stay in his lane, which is not transmissions. This is just a Youtuber repeating old wives tales and extrapolating his sampling bias, for vehicles brought in for transmission service, onto the general population.

Level is critical. I'd recommend getting a bootleg copy of Techstream 35*c to 42*c but have have luck using the indicators in other vehicles. Torque app also lets you enter custom formulas but none of the ones for other vehicles that I've tried work on the LS460. Tacoma is closest but still 30-40*F off. If you want to do the full flush it's very simple, takes less than an hour, as long as you don't drop the pan which can get involved. Just pump the fluid into the driver's side hose and you don't even have to crawl under the vehicle. https://www.tacomaworld.com/threads/...mission.68462/ Transmission outlet hose is the one on passenger side of the radiator

If you have an AWD also read the bulletin on the transfer case issues and consider changing that oil.