Hi 305Busa, That service price is such a bargain. Did the tech have to drop the catalytic converters/exhaust and then remove the transmission assembly to get to those seals?

 

Honestly can’t say what they did to get the tranny off but I have the tech manual and it does say that the entire exhaust including the manifolds do have to come off. I’m sure they took off or at least loosened the exhaust because there are new gaskets on them.

 

is the rear seal you mention call the output shaft seal?

 

I think 305Busa was talking about crankshaft rear seal. You have to remove transmission and the flex plate to get it replaced. If your transmission is already out it would make sense to replace that seal as a precautionary measure.

 

Thanks BB9.. sigh my Ls460 acting like neutral when i put it in reverse. Will bring it in Lexus dealer to get it diagnostics.

 

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Have you found the cause for the leak and had it fixed? I noticed the same transmission leak on my car (2008 RWD LS460, 148K miles) yesterday when I was replacing the transmission fluid filter on my car.
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Not yet. Currently at 176K now. I do get some transmission clunking noises at lower gears and the typical shudder when at 1200 rpm and 40-45 MPH speed. Tried drain and fill top off myself a couple of times but did not alleviate the issue. I used techstream to monitor the temperature and followed the guides provide here. Am resigned to replace with a rebuilt transmission when the times comes.

@swfla , What was your suggestions regarding motor and transmission mounts? My mounts are still the original. Are you thinking that new mounts could help with sealing the leak, retaining the necessary pressure for normal operations in the transmission, & fixing the shudder?

 

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Thank you for the feedback, jeng9495. Since you have Techstream, before you replace the transmission, you may see if the "reset transmission memory" and "relearn transmission" procedures cure your problem (transmission shudders):
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Reset memory procedure: In Techstream, go to the Powertrain/ETC/Utility screen, click Reset Memory. Then perform the transmission relearn/road test procedure below.
Transmission Relearn/Road Test procedure: Start your engine and wait for the tranmission temperature to reach 50-80C (122-176F) on your Techstream screen, take the following two steps:
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1. On a flat road, put the shift lever to D, gradually accelarate to 31 mph (50km/h) or more over a distance of 426 ft (130m) for a period of approximately 15 seconds. Then, gradually decrease to 19 mph (30 km/h) over a distance of 147 ft (45m) for a period of approxmiately 5 seconds.
2. Put the shift lever to S4 position, gradually accelarate to 19 mph (30km/h) or more over a distance of 132 ft (40m) for a period of approximately 8 seconds. Then, gradually decrease to 6 mph (10 km/h) over a distance of 66 ft (20m) for a period of approxmiately 5 seconds.

Performing these two procedures may solve your transmission shuddering symptom.
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Thanks for suggesting. I did try both of those after the dealer drain/fill and once with my own. Unfortunately I didn't get any improvement. I still have 4 quarts of WS ATF on the shelf and will likely just do another drain and fill later this summer for kicks.

 

what's the status of the leak? Did you do anything?

after having my car up on jacks for two weeks doing starter and alternator now I have the leak as well same spot.

Thanks

 

Found this video for those of us suffering this fate...

 

i had the same leak and a really bad shudder. I replaced the transmission fluids and filter but the shudder didnt go away. I took it in to lexus and they told me i need to replace the transmission. I took the car home and try fill it in with lucas transmission but it didnt work so i drained the tranny fluids and fill it up with new fluids and this time i add on blue devil transmission sealer and the shudder went away. Its been a year now and still no shudder. The additive add on was my last solution because my shudder was really bad and i cant barely drive anymore. I just want to share yall my experience. Dont try it if you’re not comfortable

 

Let me fet this straight. you added the blue devil, then the leak AND shudder went away. you have no more leak?

thanks

 

Or....2 drain n fills fixed your problem, I doubt the blue devil did anything.

 

Would I have to drain any fluid to add the 8oz of blue devil? in the youtube video


The guy runs a tubing to the top of the engine compartment to fill it.

The question is: Is the current level of my tranny fluid below this plug? Can I just pop the fill plug on the side of case and add the blue devil or would I have to pull the bottom plug and drain it all to refill it again?