Look at it closely to see if it is blown. If you cannot tell by looking then check it with an ohm meter.
car will have a hard time starting, or more commonly will not start at all
can a fuel relay fuse make car not start? If the fuse or the relay is bad, yes.
In most cases, you can tell that your lifters are bad, in your car engine, by the ticking noise. A bad lifter will make a tapping sound.
things don't work is the obvious answer.
Remove the fuse and check it with a ohm meter. If you have no ohm meter then just replace it with a new fuse.
The first thing to check would be the fuse. You can find this by looking in the owners manual for your car. It should tell you where the fuse box is and which particular fuse is for the rear defrost. If that turns our to be the problem just replace the fuse, but if it blows again you most likely have bad wiring.
on the fuse panel it is fuse number 10 usually a 30amp fuse
If a fuse blows you probably have a short or the circuit is overloaded.
you check the middle of it and if it is black or the little wire is broken it is bad or just use a fuse checker and if the light doesn't turn on it is bad Call the parts guy at your nearest dealer
There is probably shorted wiring, or the fuse is blown. Depending on the model year and make, the fuse box can be located under the driver side dashboard, or under the hood. I suggest buying a $10 test light and testing all your fuses, that way u can tell if it bad wiring or a bad fuse. It could also be a broken fan belt
Blown fuse? Bad relay? Bad switch? Bad fan motor?
Bad flasher, fuse...