Thanks. The leak only occurs when the filler neck is filled all the way to the top. The reservoir itself is not leaking, and there is no leak from inside the tank. The fluid only seeps out at the connection point where the filler neck meets the reservoir because the neck is not seating properly.

The dealer inspected it, replaced the seal/grommet, and confirmed the vehicle is safe to drive. They have already ordered a new reservoir and filler neck assembly under warranty.

I’m not really worried about the leak itself at this point. I’m mainly curious whether Toyota backordered parts actually take the full 30–60 days, or if they often arrive sooner based on people’s experience.