Where is the main battery fuse in your car? learn how to locate car fuses in this free maintenance video expert: aaron gregory bio: aaron gregory is an ase certified mechanic between 1998 and. Car battery main fuse. Often the main fuse blows when accidentally touching the wrong battery terminal when boosting a dead battery the symptom of the blown main fuse is no power and no lights inside the car checking the main fuse is easy, it's usually clearly visible if it's blown if the main fuse blew, there is a chance that a few other smaller fuses are blown too.
car battery main fuse
A blown main fuse at the battery is likely not the reason for all your car’s problems the fuse is there to protect the wiring harness in the event of a severe short-circuit somewhere in your car’s wiring while a severe short-circuit is a real pr. You can do this by pulling each fuse in turn – the one that causes the load to drop is the culprit, keep going until you are down under 50 ma. some things to check that could cause a battery to drain, even when you don't see obvious loads after checking with the fuses: is the battery getting charged fully.. Fuses can also blow if someone has replaced a bad fuse with one that is of a higher amperage. the most common amperages are 15, 20 and 30, and replacing a 15 amp fuse with a 20 or 30 amp, or a 20 amp fuse with a 30 amp, may result in a blown fuse. worse, it could cause a more severe car electrical problem, because it can cause wires to melt..
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