I guess the DIY fear is real?

This is a very easy DIY job . Suggest a scanner to monitor transmission temp. The fill plug is unlikely to need replacing. Have gaskets for the bottom plugs.

I used a Motive Products pump to fill.

I used a torque wrench to tighten things up.

It seems like a more difficult job than it really is. But once you take a little time to understand the system , it is really a simple process ( albeit perhaps a little messy).

Ordered the plug 90341-18059 from Toyotapartsdeal.com and it was correct.
Just for future reference if anyone has to order a new fill plug on their website the first pic they have is wrong!
The first pic is the check plug and the second pic is the transmission fill plug with WS on it.
I rolled the dice and they sent the right one.
If y'all want an affordable scanner that reads the transmission temperature, I bought the Ancel fx2000 for $140ish.
Hope this helps.

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Where’s my apology?

Now, do the job and don’t be a monkey, use the correct tool, have patience, and you can put that replacement plug in your parts bin for the next 20 years or until you’ve sold the car or forgot about it.

LoL. The new version of the Toyota parts website sucks. It’s hard enough to find the part number then you’ve gotta deal with ridiculous descriptions or images. Googling sometimes makes it worse, like in this case.
The Lexus website is still the old version, it’s sometimes more helpful.
https://parts.lexus.com/p/Lexus_2010...034118059.html

The transmission drain plug is soft metal.

Last week I removed it, and although it was torqued to exact specs, it was hard to turn. I got it out, but the 6 side socket rounded the plug surface.

When I saw that , I picked up a replacement plug. I have no interest in taking the risk for $4.

I have been doing all my vehicle maintenance since the 1980's and this is not common. The tranny drain plug as designed is 1) soft metal /aluminum and 2) the socket surface area is narrow.

As many have stated , ALWAYS remove the drain plug before you drain a drop fluid.

Isn't it crazy, I rounded mine pretty good with a socket just like you, since it sits so flush. Called the dealer and asked 3 times, "it's the FILL BOLT, 24mm with a ws on it, not the drain or overflow, you have it right?" both dealers said yes yes this is it, even checked my VIN. When I show up they have the ****in hex overflow bolt sitting on the desk." I had the last dealer grab e mechnic and try to find it on their diagram.
I told him I need the new fill bolt, there are 3 bolts. he jsut gave me a stare with his mouth open, the flouride stare. Seriously feels like I'm in some twilight zone shit.

I've heard from some many parts guys, "it's a sealed transmission, lfielong fluid, we pump it in. But no one even knows the part number for the ****in fill bolt and gasket.
Hate people so much