Not sure what caused the error message, but imagine it could be from something like the seatbelts locking up when you were hit. It likely wasn't saying that they malfunctioned during the accident, but that they need to be repaired now.
2013 BMW 335xi Sedan
Estoril Blue / Black Leather
6MT, M-Sport, Premium Pkg, Cold Weather Pkg, Dynamic Handling Pkg, Tech Pkg, HK Sound, M Performance Exhaust, M Performance Power Kit
Former: 2011 335xi Coupe -- 2009 MCS JCW -- 2006 MZ4 -- 2002 325i -- 1997 318ti -- 1991 318i