Thoughts on recent dealership transmission fluid change?

I’m trying to get my 3rd gen Prius (2012) back in shape after finding out about this form. Since I don’t have a very level area to work on I decided to take my Prius to the dealership to get my transmission fluid changed. I specifically told the advisor I wanted a simple drain and fill of 4 quarts ATF-WS. After waiting for 10 minutes he came back to me to tell me that the service techs are recommending me to not do this since it’s a “lifetime fluid” I told him that I understand what Toyota assumes is “lifetime” but I’m keeping this car for a long time so I wanted it done. Well after I paid my bill and left, I realized something that didn’t make sense. I was charged for 6 quarts of ATF-WS but the Prius only needs 4. The whole service ended up costing me $200 which I think is pretty crazy. Anyway I finally got the courage from this group to change my coolants. The clips for the splash guard were extremely hard to take off and when I checked out the drain and fill plug for the transmission, it was very clean like there was no evidence that it was ever taken off. I could be wrong but the 6 quarts plus the clips looking original to the car made me think that they didn’t do the service. Is there a way to check their work or should I just assume that they completed the work. I haven’t had issues before but just for basic oil changes.

 

My Prius has 140k miles and it has never had a transmission fluid change so I’d imagine it to be very dirty. I’ll probably go out and buy some jack stands and see for myself how dirty it looks like. I called the dealership yesterday and still waiting to hear back from the service manager as to why I was charged 2 extra quarts of fluid. Thanks for posting that manual as I will send that to them if they try to tell me my car takes 6 quarts.

 

Just got word back from the dealership. They apologized about charging me for 6 and said it was an error on the parts since they come in packs of six and didn’t adjust the amount used. Credited me back $35 and he did confirm with me that the job was completed. So I feel much better about it!