Probably a crossed wire or electrical short.
This is common when your bus fuses blow out or go bad.
The difference between MDL fuses and ADL fuses are that MDL fuses are a slow blow fuse with a long time lag. ADL fuses on the other hand, are normal blow fuses with a medium time lag.
A short to ground causes all fuses to blow. If you have a trailer connecter then start there first.
A: FUSES are very good for short circuit protection. On the other hand a short over current may not make the fuse to blow since it requires heat caused by the current to blow. There are fuses that are meant to blow fast and some fuses are designed to blow slow depending on the circuit requirement
Check your fuses, it might be shot
Fuses usually blow because something powered by them draws too much power. -The solution is to fix the fault, NOT to fit a bigger fuse as I have seen some people do.
Fuses blow when there is a short circuit or an over current condition.
Fuses only need to be changed when they blow. They are not a wear item.
It seems you have an electrical short somewhere.
Yes
another name could be "dual-element fuse" as these are the slow-blow type.
You could have a clogged brake line, most likely one of the front rubber ones. The Brake booster might not be working correctly. Run the engine for a few moments, then turn the key off. Once the engine dies, press the brake pedal a few times. You should hear a hissing noise each time you press the pedal. Then hold the pedal down and start the engine. The pedal should move and get softer. If none of this occurs, verify that the booster has a vacuum source. If the booster has a vacuum source, and still does not boost the pedal effort, the booster is more than likely bad. One other alternative would be a bad check valve. Simply remove the valve and blow into it. It should blow easily in one direction, and not at all in the other.