I ran my vin and couldn't find anything listed about the suspension at all code wise. I don't have the 3rd row seat but I do have an air pump sound when I open the door from time to time.
So I am guessing I have air suspension. Havent looked yet
S1CA SELECTION COP RELEVANT VEHICLES
S2DE BMW LA wheel, star spoke 334
S2VB Tyre pressure control (TPC)
S3AH Reversing camera and Top View
S4AB Fine wood trim burr walnut
S4NA Interior mirror with digital compass
S4NB Autom. climate control with 4-zone ctrl
S4NE BLOW-BY-HEIZER
S6AA BMW TeleServices
S6AB Control, Teleservices
S6FL USB/audio interface
S6UH Traffic Information
S6VC STEUERUNG COMBOX
S8KC OELWARTUNGSINT. 24.000KM/24MONATE
S8S4 Decoding, variable light distribution
S8SC Telematics access request,country-spec.
S8SL Trailer coupling preparation
S8SM Car ident. number visible from outside
S8TN TAGFAHRLICHT UEBER LICHTMENUE EINST
S9AA Outer skin protection
S212 Equipment, brake syst. country-specific
S245 Steering wheel column adjustment,electr.
S248 Steering wheel heater
S302 Alarm system
S316 automatic trunk lid mechanism
S319 Integrated universal remote control
S322 Comfort access
S328 Footplate, aluminium
S346 Chrome Line exterieur
S386 Roof railing
S402 Panorama glass roof
S417 Roller sun visor, rear door
S423 Floor mats, velours
S430 Interior/outside mirror with auto dip
S431 Interior rear-view mirror with auto dip
S441 Smoker package
S459 Seat adjustment, electric, with memory
S464 Ski bag
S488 Lumbar support, driver and passenger
S494 Seat heating driver/passenger
S496 Seat heating, rear
S502 Headlight cleaning system
S508 Park Distance Control (PDC)
S521 Rain sensor
S522 Xenon Light
S524 Adaptive Headlights
S544 Cruise control with brake function
S563 Light package
S575 Socket, lugg. comp. incl. 2. batt.
S609 Navigation system, Professional
S615 Extended BMW Online Information
S620 Voice control
S639 Preparation f mobile phone cpl. USA/CDN
S645 BMW US Radio
S655 Satellite tuner
S676 HiFi speaker system
S697 Area-Code 1 for DVD
S761 Individual sunshade glazing
S823 Hot-climate version
S853 Language version, English
S876 Radio frequency 315 MHz