NHTSA recall 88V135000
Seats
BMW 735 and 1 more
The defect
The driver and/or passenger seatbacks may not have been fully attached to the seat base reclining arms (attaching brackets).
The risk
There may be looseness of, or noise in, the seatback;also, during a severe rear impact, seatback might not support the occupant.
The remedy
Manually seat the seatback on the base.