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Does anyone have a RX400h service manual in PDF or hard copy?

Based on my experience with my GX470 and the ATF-WS fluid it expands when heated. So there is a chance you may have changed it when the vechicle was warm or hot. The GX470 requires you to use a scantool to read the transmission fluid temperature to get a accurate reading on the fluid level. You need to becareful that you dont have to do something similar before checking the fluid level on your RX400h. There is a alternative way to read the ATF temperature so you can set the correct level. Do you have the service manual for the RX400h in a hard copy or PDF? I would like to get the instructions to change my dads ATF on his RX400h. Can you help?

Well I changed the ATF in the CVT yesterday. According to the service manual, it's supposed to take 4.2 litres when it's changed (if the vehicle has the tranny cooler, which mine does). Anyhow, before removing the drain bolt, I removed the fill bolt (to make sure it would come out and I would be able to refill). When the fill bolt came out, tranny fluid shot out (almost over to the passenger tire, completely missing the drain pain, doh) and a fair amount of fluid drained out of the fill hole.

Per the service manual, the fluid level is supposed to be between 0 and 0.5 mm of the bottom of the fill hole. Would it be safe to assume the tranny was slightly overfilled based on what came out of the fill hole?

After draining the tranny, I measured the amount that came out and filled 4 one litre bottles.

When I refilled the tranny, it only took about 3 and 3/4 litres before it was at the bottom of the fill hole. Drove the car with no problems and no change in the level.

Thinking the fluid might expand when hot, I left the car overnight and checked the level cold this morning and it was still just at the top of the fill hole.

My next thought was that maybe the tranny cooler was empty and that would take the extra 1/4 litre. Thinking the tranny cooler might have some sort of thermostatic control, I drove the car for quite a while (highway and city) and checked the level when I got home. It was still at the bottom of the fill hole.

Anyway, everything is working fine, I just have an extra 1/4 litre of fluid laying around.

Has anyone else changed the fluid in the CVT and had something like this happen?

Um, I would be afraid that now the car is undriveable. It sounds like the plug you removed is not the fill plug. I would get confirmation of that from a dealer before I drove the car with only that much fluid in the CVT. Burning that baby up woudl be very expensive.

Does anyone know what size wrench I need to remove the automatic transmission fluid fill plug?

Could somebody tell me if at all anybody used non standard ( Mobil/Penzoil) ATF fluids has been ever used on GX model from Non dealers

if so your suggestion the brand, I had gone to the dealer and he suggest All toyota & lexus engines

should mandatory used the Transmission Fluid Type IV sold by the dealers in order for the transmission

warranty, Is it true, your advise !!!!

I have 30,000 miles on Royal Purple Multi Spec. Automatic Transmission Fluid without any problems. I am about to do a fluid change again. Please note you need a scan tool to read ATF temperature for correct fluid level check. I can send you the manual you could follow if you need it. I use their products for every fluid my vechicle requires.

I order it from here. Stock up on all fluids at once since they charge $9.00 fee on all orders.

http://www.jegs.com/i/Royal+Purple/831/01320/10002/-1

You can call Royal Purple technical support at phone: 281-354-8600 with any questions.