Are all these lites on at same time electrical problem, or a mechanical problem.l know it needs rear brakes but they are not that bad?

l do not know about the airbag light, but on my 1993 Dakota, the ABS and brake warning lights came on when a tail light burned out. It is an easy thing to check and if the warning lights go off, then you know what it was.

when those come on together like that it usually means a fuse is blown, l just ran across that problem the other day,check in the fuse panel & see if there is not a fuse blown,the abs & brake warning lights r on the same fuse,if it blows it again u need to have the abs pump checked out real good on it,i had to replace one because it was going bad,they will cause the light to constantly come on & do this & it will also keep blowing fuses if thats whats wrong with it,it needs to be checked though to verify ther r no major problems with it,good luck.