Mine has the same problem, I have pushed it all the way down and it will automatically pop up, it wont stay in the same position. I noticed there is a shock looking mechanism under the seat, could that be the problem?
The shock mechanism is operated via a metal cable that connects near the front of the seat... you could always lift the seat to see if it is disconnected... to lift the seat you need an E12 socket... four screws each corner of the rails. When removed the entire seat will lift as far as the seat belt cable will reach until you detach that. (Don't detach it tough with the in the ignition or you will have to have your airbag light reset)...
Hybrid Mode
