Try pressing down on the back of the seat, in the center, as you turn the key. That may take enough pressure off the mechanism to allow it to unlatch. If that doesn't do it, check out http://burgmanusa.com/bkb/400+b+Seats and scroll down to "stuck seat."
If a broken cable seems to be your problem (unlikely, but...), you're still under warranty, right?
after you get it open check the screws to make sure everything is tight its a simple cable system and there is a latch / wire hangey out the side thing lots of people use on this site somewhere you might want to check out
welcome to the site and lets hope this is the worst problem you ever have :thumbup:
My 2007 400 closed just fine if I simply sat on the seat. The 2008 400 doesn't. I physically have to push it down. It's not a big enough deal to worry about adjusting the seat latch, but that's the answer.
Regarding the dead battery issue, unless something has changed, it is a simple cable operated latch. Many of us have installed an emergency release in case we lock our keys in the trunk.
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