2004 dodge durago warining light for ABS, Brake, an air bag light stays on.

2004 dodge durago, was working just fine. oneday i was looking at the rear heater not working , the internet said check in the SUV under the hood fuse 13 an 23. I did that an nothing changed, I double checked it again this time I tapped lightly on top of fused to ensure they all had good contact. then when I started driving down the road I noticed my warning lights were on then, I have check over the fuse box 3 times now an nothing has turned the lights out. what could this Be ?  Im thinking its not just a time frame thing, I check the air bag plug, added brake fluid to over full point, inside an out side fuses, brakes work fine......... what may it be ?????