Airbag light came on. Went to CarMax for oil change coolant replaced but they could not diagnose why light came on. Went to dealer close by, 1) crossfire mexhanic not there. 2) will have to leave car for a couple of days to diagnose problem, hard to do. 3) might need new computer or new bags!!! Have moved on the dealer #2 but can not get in until this Friday. Should I contact Mercedes dealer??

HELP!