Answers:
1) IF you have the rear seat massagers (they were an option--not all cars have them) the on/off buttons are located inside the center arm rest. Pull armrest down, open the lid on top, you should find buttons & knobs for massage, heat, cooling and control to move front passenger seat forward & back.
2) My trunk does the same thing. An adjustment issue--or just the gas shocks getting old. The trunk is too heavy and automatically closes immediately after opening. I had it adjusted and it worked again for a short while then started doing this again. Work around is to manually pull up on the trunk at the same time you hit the release button on the fob.
3) See photos of trunk compartment/tools:
Round expanded foam thing has:
i) lug wrench arm
ii) one lug wrench socket (mine are not orig.--I bought 2 sizes of socket)
iii) jack
Small, cheap case foam case contains:
i) combination slotted/phillips screw driver shaft
ii) handle for screw driver
iii) combination wrenches: 8/10 & 13/17 mm
iv) tow hook
There should be a compressor too but mine was missing. One of the small bags in the "secret" compartment at the bottom contains an aftermarket compressor.
Note: the compact spare in the photos was an option that most cars did NOT have. Most cars just came with a can of leak fix.
Rear Seats:
Pull armrest down
Open armrest
Rear seat controls
Trunk
Open first floor panel
Tools under floor panel (some original--some not. Compressor missing. Optional compact spare.)
Tool kit:
Open "secret compartment"--2nd floor panel under 1st floor panel & spare/tools. Some people have found manuals & other goodies in here.
Inside my secret compartment are an aftermarket compressor in the black bag and some aftermarket emergency supplies (jumper cables, reflector triangle, etc.) in the yellow/black bag.
Update--sorry, I can't figure out how to make the images appear in this editor. Here's a link to set of images. Try cut & paste into your browser:
Almost Everything-Car Paint-Auto Body-Collision Repair-Fremont-Newark-Union City-San Francisco Bay: 2006 Maserati Quattroporte Rear Seat Controls, Trunk, Tools & Accessories