Which current market tools can read the error codes? Once the cluster light illuminates the error needs to be corrected (reattach the wiring in this case) and the trouble code erased.
You need INPA or a diagnostic tool (I.E nt530) to clear it. How to reset BMW E36 Seats airbag light on? Now the seats are out and the airbag light is on I ended up starting the car during the procedure of removal.
Take the seats out and have them reupholstered why the car is sitting.