I have the Toto Drake w/ soft close lid. The seat stays up just fine. The "lid" slowly closes if you start closing it a bit. If you don't start pushing the lid downward, it also will stay up just fine. Maybe yours is defective, unless Toto makes more than one type of soft close.

BTW, I've had mine about 11 months and have experienced no problems.

Mine stays up too, till you push it down. I'd say it's defective (or maybe not "adjusted" right??)

Have you checked the levelness of the toilet- is it canted front to back? I am not sure how the slow close is initiated, but mine stays where it is supposed to.

Yes, it should stay up.

If you got this from your local plumbing store give them a call my experiance with both the walk in stores and the internet delivery stores is they will swap it out for you. Your right it should not be working like this.

Ok, I checked and it's level. If anything the tip is slightly higher that the back which should have an opposite effect. So when when everyone puts up the bottom half, it just locks in place? And when you go to close it, does it close softly like the top? Thanks!

The seat stays up just like a regular toilet when you lift it up and yes, it slowly closes like the lid.
Monica

We have 2 of these.
There are adjustment screws to make it tighter or looser which affects how easy the lid will go down. Sounds like yours is just not tight enough.