ES350 possible transmission leak?

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07-31-23 | 02:50 PM

#31

June1978

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Joined: Sep 2019

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From: MD

Quote:

Originally Posted by Wilson2000

Your drain fill plug leak is uncommon. It was likely not tightened after a previous service. As long as you are removing the plug to replace the gasket, it might be a good time to do a drain and fill on your tranny fluid. There's lots of good DIY info on doing this job on both CL and YouTube.

It's the o-ring for the sensor on top of the transmission. not the drain plug. I did a drain and fill service 2 years/6000 miles ago (genuine toyota fluid)

the below is the same exact symptoms I;m experiencing. going to get this done tomorrow.

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08-02-23 | 06:19 AM

#32

June1978

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Joined: Sep 2019

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From: MD

so this did not resolve my problem. I woke up to a small puddle this morning. I have bigger issues. I think the seal is bad which probably requires intense labor to replace.....fml

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08-02-23 | 08:20 AM

#33

ESh

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Joined: Jun 2014

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From: MI

Where the oil is coming from? Is it engine or transmission oil?

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08-02-23 | 09:08 AM

#34

June1978

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From: MD

Quote:

Originally Posted by ESh

Where the oil is coming from? Is it engine or transmission oil?

It's transmission oil. I'm at the shop now- they showed me the issue. My transmission pan is leaking. Going to replace the gasket and do a drain and fill

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ESh (08-02-23)

10-03-24 | 05:14 PM

#35

JRA2000TL

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Joined: May 2012

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From: Alabama

Quote:

Originally Posted by AA2016

It shouldn’t take more than 25 minutes for someone who knows what they are doing. The labor is mainly removing a few things out of the way to have access to the speedometer cover assembly. I think as far as properly adjusting for the transmission fluid loss ( if that is indeed your issue), you probably have to do a fluid change and get the level right that way. I didn't want to go that route.

I found a helpful video that talks about this issue

https://www.youtube.com/watch?v=idRJiRySISc

I'm resurrecting an old thread, but it seems as though I have the same issue. I'm ordering the o-ring. This video has been taken down but would've been helpful. Is there anything else involved? Remove the air box and the 1 bolt? No need for the sensor if everything is working properly. I'm guessing it just pops right in and out and there's not much else to it?