One thing I know is that if voltage drops below 10.5v, or 9.5v (can't remember off the top of my head) the system will disable and illuminate the SRS MIL. Once voltage returns to normal the light will go out. Could there be a charging problem?
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.