I just had my transmission serviced at the Toyota Dealer. It was a drain/fill. In the end, I had a conversation with him about leaving the dealership and if it does not shift right. His comments were as follows: "If it slips, you need a new transmission" They were not being rude though. They were protecting themselves. Luckily, I drove the vehicle for over 1 hour and it shifts fine.
There definitely is a new washer at the drain bolt, but I could not tell if they removed the fill plug (as there is no washer), even after removing the splash guard. The probability is they cleaned up any excess fluid.
The receipt states 3 Qts. WS Fluid on a Toyota Vehicle. The receipt also states "No Guarantee to remedy any issue with the vehicle", and "Fluid Service was requested by the customer". Clearly, I requested it, because it is recommended. Now, the dealer is recommending every 30,000 miles. I spoke to them about the 20,000-mile mark and said that this is fine.
The only shameful part of all of this is that I never saw the fluid come out, could not tell the condition of the fluid, or see the fluid come back in. The service advisor stated that the tech would stop the drain if the fluid was really dark and it smelled funny before all the fluid left the pan. Given the transmission was shiting fine prior to the service, I would suspect there would be no issues. This is one of the main reasons why I took mine to the dealer, as I feel they would not play games. We all hear these horror stories. The cost was not too high either. About one hour of labor, the fluid, and some miscellaneous shop supplies. I even took off the splash guard, but could not see any residual fluid. The drain plug has a new washer and based on the videos I have seen, there really is not a mess created by draining the fluid. Not sure about the filling procedure. I did smell a little bit of fluid on the way out, but because of the rain, the whole underneath was covered with rainwater.
The most ironic part to all of this is when the car had about 50,000-60,000 miles and I would bring this up to the dealer. The dealer would shy away and say it is "lifetime fluid". But once you reach over 100,000 and are out of warranty, it is all fair game. Luckily, it is driving perfectly fine. I guess by getting the fluid to the correct 103 - 113 F, the fluid will drip out, to a trickle and can be plugged back in. The engine temperature was warm as well, almost to the normal temperature when I left the dealer. Too bad that Toyota can not create a nice fill tube to fill the fluid after removing the tire, but once in a while one must use and pay a mechanic. Overall, I am happy with the service and will be back at the 120,000 mark for sure.