Question before entering:
I need to turn off the seat occupancy sensor on BMW E90 2007. Is it possible to be done via WIFI BMW ICOM A2 clone ISTA-D?
Yes, seat occupancy sensor can be disabled, but do not need a ICOM A2, it is possible with occupancy emulator.
Buy a cheap BMW Seat Occupancy Sensor Emulator for All BMW Series (1997-2010)
The package including 2 pieces emulator, one for new BMW and the other for the old.
They are the same as the old emulator (see picture), the old is currently out of production.
Support for all BMW series (1997-2010)
1997-2003: E31, E36, E38, E39, E46, E53, etc.
2003-2007: E60, E63, E65,E87, E90, etc.
2007-2010: E60, E63, E64, E65, E70, E71, E81, E87, E90, E92, E93, etc.
Run NCS-Expert software, change active>nichtactive in MRS and disconnect 3 pin OC3 plug. Delete DTS’s and enjoy.
The problem can be solved with AVDI/FVDI as well. Go to Coding, Read module go to Occupant OC3 and select disable then write module, exit, go to fault codes, erase and now system ignores OCS and warning light turns off but always deploys bags with or without presence, its not recommended if child seat is used but is a quick effective solution to weight pad failure.