If the car’s cooling fan fuse is the one that’s blown, it still can be dangerous since this may result in overheating. A blown fuse cuts the electrical current to a particular component, so it’s not particularly dangerous.īut, it still needs a replacement for the affected device to function again. When a fuse is blown, it means it has prevented more costly damage to your major car’s electrical components.
Cars have several fuses, especially newer models– the diagram on the lid will be your guide. Refer to the diagram on the box to find the fuse you need to replace. Some cars use a second fuse box located under the hood. Step 2: Locate and remove your blown fuseįuse boxes are commonly placed under the driver’s side dashboard, near the footwell. It’s important to buy the same type and amperage of the fuse you are replacing. One reliable product is the Autozone 40 amp fuse. You can order online or buy in your local auto parts store. Make sure to purchase a reliable fuse replacement. Step 1: Secure a new 40 amp fuse replacement Next, follow these steps to replace your blown-out fuse successfully: You can avoid additional costs from a mechanic since you can easily do it yourself.īefore trying to locate your car fuse box, you should turn off your engine and temporarily cut the car’s electrical supply connection as a precautionary measure.
#40 AMP FUSE BLOWN HOW TO#
Now that you know how to tell what a bad car fuse looks like, it is important that you also learn how to replace one. Here are the common causes of a blown 40Amp fuse: It’s always best to consult professionals should there be more serious electrical problems to uncover. However, different factors may cause a fuse to blow. The inexpensive 40Amp car fuse is supposed to take the fall to protect other major components against short circuits. Causes of Blown 40 Amp Fusesīlown-out fuse is a common issue when you own a car. A blown-out fuse can stop your speedometer from reading your speed and cause other problems in your dashboard– like a flickering check engine light.įor newer model cars, the powertrain, along with its assist and safety features, can also be compromised. Your electrical car components like radio, lighting, power buttons, and climate control will likely show signs of malfunctions.Īlso, a broken fuse can affect your speedometer. Signs of a Blown 40 Amp FuseĪside from the physical traces of a blown fuse, the more noticeable sign is the change in function and performance of internal controls. It is not a frequent occurrence, yet your blown fuse can affect your ignition, preventing your car from even starting.
A blown jcase fuse, for example, will also exhibit a smear and broken wire connector as you open it from the top. Such wire melts due to the overloaded current.Īll these conditions similarly apply to a square fuse, not just to the blade type. You will also notice a broken or melted wire inside that’s supposed to connect the two metal prongs.
In fact, a burnt car fuse will show a black smear inside, similar to a burnt wire or a plastic. The wire bridging the two prongs stays connected and retains its wave-like form.Ī bad 40 amp fuse is relatively easy to distinguish, as it remains a tiny, straightforward component.
This type is made from metal prongs and slightly transparent plastic material that allows you to see the inside component.Īn intact 40Amp car fuse displays no blemishes or burnt smear in any part. Most 40Amp car fuses today are blade-type fuses. Tips to Avoid Blowing Out a 40 Amp Fuse.
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