A Sydney driver was due to have a faulty Takata airbag replaced two days before he was killed in a car accident, a court has heard.

Huy Neng Ngo, 58, died minutes after a "relatively minor collision" in Cabramatta on July 13, 2017, when the airbag activated and flung a piece of metal at his neck, the NSW Coroner's Court was told on Friday.

The court heard the inquest will examine why the airbag wasn't replaced as originally scheduled on July 11. The booking was pushed back to a date in October.

Counsel assisting, Tamara Phillips, said the Ngo family had deep concerns that they weren't made fully aware of dangers of the Takata airbag and how faults might materialise before the fatal crash.