LS - 4th Gen (2007-2017) Discussion topics related to the current flagship models LS460, LS460L and LS600H

Trans Fluid Change? "NO"

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Old 08-25-14 | 04:13 AM
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Default Service Schedule Tool on Lexus Drivers website

I like to tool on Lexus Drivers website where. After you register your vehicle and enter your current milage, they give you a custom service schedule...but it ends at 150,000 miles.
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Old 08-26-14 | 04:24 AM
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That's because after the 150,000 mileage level, you simply repeat the whole schedule.
Old 09-02-14 | 05:26 AM
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WOW!

Was reviewing my Lexus Service History on the Lexus website and saw that my Transmission Fluid was changed before I purchased in at 58,000 miles, just before I bought in at 59,000 miles Certified. What does that mean as far as don't replace because it's permanent? Does it now need to be changed on a regular schedule?
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Old 09-02-14 | 07:28 AM
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Originally Posted by GregoryNP
WOW!

Was reviewing my Lexus Service History on the Lexus website and saw that my Transmission Fluid was changed before I purchased in at 58,000 miles, just before I bought in at 59,000 miles Certified. What does that mean as far as don't replace because it's permanent? Does it now need to be changed on a regular schedule?
Yes it needs to be changed on a schedule. According to my manual, every 96k kms (60k miles or so) or 6 years.

I had mine done last week. Shifts beautifully and smooth. Cost was 148 dollars and took about 90 mins to complete at my Toyota dealer.
Old 11-30-20 | 09:41 AM
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Originally Posted by Devh
There are more people that have had shortened transmission life after a transmission fluid flush then those that don't. The reason is the new fluid will dislodge whatever oxidation and varnish and it will clog up the tight passages leading to failure. Transmission fluid flushes can be disaster for the transmission and it's better to be left alone and allowed to complete it's life cycle.

My old BMW had 92k miles with lifetime fluids and had no problems however if someone were to change the lifetime fluid on that car there is an unusual procedure for it that requires you to pump the fluid wile it is running and hot otherwise you may risk failure down the road.
Most owners that have lifetime fills that had a transmission failure problem was not due to the fluid.
The fluid will look bad but it doesn't mean that it is bad.
Lifetime fluid. Yes, the lifetime of your tranny :-)))) in general. Then the dealer offers you to swap the broken tranny for a new one for 10k ;-) - so, sot true or partially true. I got two beemers, both done two drain and refill, NOT FLUSH. What came out of the tranny was the color of mud after over 100k miles. one of the beemers is 50k into new fluid, super smooth shifting. Review the bimmerfest forums about drain and refill, everybody with older cars doing it. lexus gx forums - same thing. people do drain and refill on 30k miles cars. Its a myth that old worn fluid will do any good at 200k miles.

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Old 11-30-20 | 09:51 AM
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best thing to do is not flush,

have a indy tech drain a quarter of the fluid or half leave the other half or quarter and add in some new fluid

that's safe and will not harm it..

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Old 09-29-21 | 10:15 PM
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My rig has 65k miles, and the dealer advised that transmission fluid appears to be contaminated/burnt and it's time to exchange the fluid.
Can the dealer actually see the fluid given that it's a sealed system or are they just recommending it for the sake of making money (helping prolong the transmission)?
Old 09-29-21 | 11:16 PM
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Originally Posted by HedgeFund
My rig has 65k miles, and the dealer advised that transmission fluid appears to be contaminated/burnt and it's time to exchange the fluid.
Can the dealer actually see the fluid given that it's a sealed system or are they just recommending it for the sake of making money (helping prolong the transmission)?
it’s not sealed you can open the filler hole and exit hole plug to check the fluid. Did they do that…hard to say.. you probably should only do a few drain and fills. Toyota atf isn’t the best, try valvoline max atf they have a higher temperature rating.

flushing is a no no since you are already at 65k, don’t want to risk that. Either way if they really do change the fluid then it’s something good to do.
Old 09-30-21 | 05:55 AM
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Originally Posted by HedgeFund
My rig has 65k miles, and the dealer advised that transmission fluid appears to be contaminated/burnt and it's time to exchange the fluid.
Can the dealer actually see the fluid given that it's a sealed system or are they just recommending it for the sake of making money (helping prolong the transmission)?
it appears that dealers are really hungry these days... you know why..
i performed drain & fill at maybe 80k miles, the fluid was a little dark but still clear. its good to perform drain & fill, and its not hard.
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Old 09-30-21 | 06:04 AM
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Originally Posted by texas008
it appears that dealers are really hungry these days... you know why..
i performed drain & fill at maybe 80k miles, the fluid was a little dark but still clear. its good to perform drain & fill, and its not hard.
second that.
Old 09-30-21 | 07:00 PM
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I flushed the fluid on my 430 at 150k. It looked like mud. I had my 460 flushed at a Toyota dealer 150k same mud cost $300. 10k later no problems. Will flush again at 200k.
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Old 10-01-21 | 03:28 AM
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Originally Posted by Cavedog
I flushed the fluid on my 430 at 150k. It looked like mud. I had my 460 flushed at a Toyota dealer 150k same mud cost $300. 10k later no problems. Will flush again at 200k.
just wonder how much do they charge for the service, thanks
Old 10-01-21 | 04:47 AM
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Originally Posted by texas008
just wonder how much do they charge for the service, thanks

I paid about $160.00 a couple of years ago. Hardly worth doing yourself.
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Old 10-01-21 | 01:42 PM
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My dealer back flushes
Old 10-02-21 | 08:36 AM
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Changing the transmission fluid and filter won't "dislodge" or "dissolve" varnish, because there isn't any varnish in a transmission. The fluid does oxidize and degrade with heat exposure - it does NOT last forever.

Any debris (clutch and steel material) is already stuck in the filter, which gets restricted with that debris - so it should be changed to reduce inlet restriction & make the transmission pump less likely to cavitate.
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