If it's not leaking bad then i would just monitor it. Check the fluid level through the fill plug in the transfer case. Its a little tricky to get a ratchet up in there but not too difficult. There are posts on here that show you exactly where the plug is.

 

That might be more wrenching than I am able to do... I am assuming that the fluid in the transfer case is different from the transmission fluid that you can check through the engine compartment?

And how would I check the level throw the fill hole? Or do you mean pumping more fluid into it until it spills over and then seeing how much volume it took?

 

Those fluid changes are simple drain and fill to drip. You have fill hole that YOU OPEN FIRST. Always first. then you simply pop drain plug and refill from the top, after it drained and plug is back in.For the year, oil had to already been changed at least once.
Keep in mind, your rear diff also had to be already done.
they both use gear oil, not regular oil. So get oil pump that screws on top of the oil bottle, will make your life absolutely easier then.
Also, vehicle has to be perfectly level during this change.
But I do not believe it's t-case leaking. It's more likely one of them valve cover gaskets leaking down ONTO the t-case. Now THAT is much more common than leaking t-case gasket.

 

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Yep I got that part, makes sense, just in case the fill plug does not open and you're left stranded with no oil in your diff.

This car was a company car and serviced like clockwork every 5k, I'll check the records to see if these fluids were all changed in the past.

If it's not the transfer case, that would be excellent news. The tech who changed the oil and commented on the leak said he thought it might be a leak at the axle seal?Honestly aside from a simple slider car jack I don't even have the necessary tools - like stands or wedges. Perhaps I should take it back to Toyota or another Japanese dealer for a diagnostic.

 

I can't tell from pics what is up and what is down. have seen plenty complaints on leaking valve cover gasket though and literally none about t-case.
If it were cover gasket, it is not good news as it's a bitch to do. It's always bank 1, or one covered by cowl.
If you take upon that task, do spark plugs in the rear same time, just because you are THERE. That's another bitch job. Front is easy.
Rear diff, don't forget it.
You need 4 jackstands or 4 ramps or car lift to do it right.

 

. have seen plenty complaints on leaking valve cover gasket though and literally none about t-case.
If it were cover gasket, it is not good news as it's a bitch to do. It's always bank 1, or one covered by cowl.
If you take upon that task, do spark plugs in the rear same time, just because you are THERE. That's another bitch job. Front is easy.
Rear diff, don't forget it.
You need 4 jackstands or 4 ramps or car lift to do it right.

Which one is better news if someone else is going to do it for me? I scheduled an appt with a local Toyota/Lexus specialist.

Wait so why does the rear need to be done first? Also spark plugs were done at 120k.

 

Don't worry about it unless you see puddles. Enjoy the ride!

 

Bank 1 is very hard to get to. Because valve cover is covered by cowl. Lexus will charge arm and leg for the job. They quote close to $600 for spark plugs because of this.
There are several write ups floating around about that job. You might be better off finding a buddy with tools and good mechanic skill and DIY. Not hard, just tedious.
But before you go through all this... buy contrast dye kit from any parts store. Wash back of the engine and under as much as you can. To clean all those stains.
then, do dye test. If it indeed leaks from the top - I bet 80% on that - well, you got it.

 

I have a hunch the OP does not wrench on the car. Therefore may not be willing/able to get underneath to inspect/determine the actual location of the leak. Just a hunch.

 

The dealership would be the last place I would take a out of warranty vehicle to. Find a good independent mechanic to check out the problem, unless you like paying a lot of bucks.

 

I also have a 2013 with the V6 but it is not a Hybrid. The transmission fluid in my vehicle has a dip stick. Standing in front of the car, it is to the right of the engine directly behind the radiator. You should check the level after the engine is fully warmed up with the engine RUNNING.

If you have this option, you may want to consider adding a good grade of seal/gasket conditioner such as TransX assuming you find the level to be low. I would not add more than 1/2 quart. If you never changed your fluid, I would have it changed and add this. If the fluid is not low, the leak is probably not the transmission.

I am not sure if you have the conventional transmission which is in the non-hybrid cars. If you do you may want to consider switching to the high mileage synthetic Valvoline transmission fluid as a lot of others on this forum including myself have done. I believe this has a seal conditioner in it.

 

Hybrid? transfer case? Post some pictures of the prop shaft!!!!!