erm you dont have to remove anything!
the ashtray is held in by two metal clips and just pops out of the console
i had a look at it and discovered that one of the gears had snapped and about 1/4 of it was missing, because of that the gear had slipped and lost the spring tension required to push it open, and the broken bit was jamming on the rail when it tried to move.
i wound the cog back a few turns to put some tension back on it and carefully reinserted the ashtray so that the broken part of the gear didnt actually get used (it doesnt do a full rotation) so now it works nicely.
Not that i smoke, but it was annoying me!
The next annoying job is my stereo ignition live, ie the loom doesnt have one. I had planned on taking a tap off the ignition switch and feeding a relay to switch the live into the headunit, however it seems to do that i need to remove the steering wheel and airbag etc to get into it. So after scouring the haynes wiring diagram ive discovered the heated rear window switch has a (BIG) ignition live running to the rear of it.
I think it will probably be the easiest place to take the feed from but does anyone have another point thats better/easier that that?
Also siena, whats this double din fascia and RNS-E?