Brera / Spider Seat Tilt Release Mechanism 'Fix'
A little a late in replying, but hopefully helpful to others, who like me search on this topic.
Literally just bought the car yesterday and, hey presto, my driver's seat tilt release mechanism was stuck.
After a little investigation, it seemed that the tilt release lever at the base of the seat had moved out along it's hinge post and therefore wasn't able to move freely. Pushed the lever back in towards seat with the tip of the screwdriver and handle and lever move freely again allowing the seat to tilt forward.
See photo attached...
Push the driver's seat as far forward as possible and raise it's height using the adjustment lever: this provides best access to the seat trim and tilt release mechanism.
Remove the circular plastic cover at the rear of the driver's side plastic side trim. There are three push in slots at 1, 5 and 9 o'clock that hold the cover in. Prise open with a thin, wide flat bladed screwdriver to avoid damaging the plastic trim: I found the 9 o'clock easiest to get access to. Simply pop off the other two with your fingers.
The tilt release mechanism is at 12 o'clock and partly obscured by one of the cover retaining arms, but is not an issue. Place screwdriver on raised part of the lever around the hinge post (fulcrum if I remember my 'O' level physics?) and push until the whole lever arm back.
Lever and handle should now move freely.
I'm no engineer, but it seems that there is nothing to stop the release lever moving towards the outside of the seat, so I suspect that it will be a repeated operation. Given that I don't envisage having to pull the seats forward too often on the Spider, it's probably not much of an issue, but can understand why it would be a PITA on the Brera.