asc light, abs light, check engine light and air bag light all have come on today at the same time

 

Battery condition is the very first thing to check if multiple faults occur in the same time, even if your car still starts.
After that, check the fault codes, reset, and go from there.
In the meantime, hundreds of threads on this forum on similar problems, do a search, read through them and try to find some similarities.

 

I hate when that happens!! What car is it????????????????

bob