Hyundai Repair: hyundia XG 300, slow blow fuse, fuse boxes

Question
All of my windows stopped working at the same time. They want go up or down the good thing is there up,also my air bag light is on. which came on before I had a tune up and a timing belt put on.

Answer
The first things to check are the 40A power window slow blow fuse in the underhood fuse box and the power window relay in the interior fuse box.  The relay will be at the top and just to the right of the fuses.

If it's neither of these items, diagnosis gets very tricky very quickly, since the window controls are computerized.  You might check all the fuses in the both fuse boxes, since the power window relay is controlled by the electronic time and alarm control module (ETACM).  If one of the ETACM fuses is blown, the ETACM may not activate the power window relay.