Fuse box plays a vital role in-car access. It helps to organize car fuses and easily protect all the electrical circuits. The circuits include stereo, signal lights, engine, windscreen wipers, etc. it also protects them from short circuit or overload. If you see the gadget of your car stop working, it is time to change your fuses. For this, you need to know some basic things and some standard tools.
Fuse boxes are located in two places, under the hood in the engine bay and the dash. You can also call it a fuse panel. Also, a burned-out fuse can cause many problems if you keep it for a long time. If you have a trouble finding the fuse panel’s exact location, you can follow the user manual. In this article, I will show you how to remove the fuse box under the hood.
Location of the Fuse Box
The under-hood fuse box is located in the engine compartment, where the battery is also located.
Materials you will need for the Process
- User manual
- Tools like socket or wrench set
- Tape measure
- Electronic systems diagram
- Power supply manuals
Process of How to Remove Fuse Box Under Hood
Removing the fuse box and replacing with another one can be a fun job for the mechanics if he has proper instructions. Here is what we tried and succeeded very easily:
Step 1: Remove the Terminals from Battery
First of all, before transfer fuses, turn off the power supplies of the engine. Check out the fuse diagram. Then remove positive and negative terminals that are going to the battery.
If your car has modern technology and has airbags, wait for some time and keep in mind that they should not touch any metal object.
Step 2: Remove Dirt
You are dealing with the under-the- hood fuse box and the engine compartment, so your fuse box will be inside the cabin or check the user manual. After locating the fuse panel, remove the dirt and open the panel lid.
Step 3: Open the Panel of the Box Using Electronic systems diagram
Most of the lid has an illustrative diagram of fuse boxes, so it will be easy for you to remove them if you follow the chart. Opening the lid, you will see brass looking connectors which are connected with the battery and alternator.
Start loosening up this with a screwdriver. Before removing the wiring, check the different color wires so white is coming up on one side and the black wire is coming up on the left.
Step 4: Test the Fuse and Arc
Open the bolts and slide out, then put the fastener back in so you will not lose it. If you know how to test reel a starter relays ignition, the job will be easy for you.
But if you want to test the fuse quickly, take a look at the arc. If the arc is broken, you have to replace the fuse.
Step 5: Disconnect the Wires & Air Box
Now go ahead and remove the other bolt. You will see the underneath the fuse box, wire looms, and connectors going into the box. You will also see a large wire looms in the fuse box.
Just find them and disconnect them. You can use an engine holder, a large piece of a metal bar that holds the engine in place, so you can remove the fuse box just slightly using the fasteners.
Step 6: Remove the Undercover
After removing the air box, you will see an undercover and three tabs in there. You need to remove this undercover first before you attempt to remove the wiring.
Now take a flat head screwdriver and slowly and carefully peel back it. The tabs are flexible enough to work.
You can see starting to come off as a tamp and then another one in there. If you are struggling to understand this point, you can watch online videos for better.
Although the undercover is sort of hard to see. You need to check in between the process for radio functions or air conditioning and other sections.
Step 7: Knock up the Fuse Box Housing
Once you get all off those tabs, you can start to peel back the cover before the installation process. Now grab a screwdriver and start prying away, which you maybe not want to do because you can begin to nick up the plastic fuse box housing. Please do not push it too far. You can also use a plastic tool so that the cover will quickly come off.
Check out if there is any broken filament inside the fuse window. You can check it from the window. While checking the ampere rating, one should also check other important issues. If there are any unbroken filaments, this will prove you are safe to remove the box.
Before removing the fuse box, check the underneath, and you will see several harness connectors, and you have to remove every wiring harnesses connector one by one.
Step 8: Disconnect the Harness
Just press the tabs with your thumb but do not pull on the battery cable/wiring. Do that with every single harness connector then the entire fuse box comes right out.
It will take some time to disconnect the full harness connector and everything. Sometimes it will be a little hard to find the tab in there. However, it is not too difficult to remove the most challenging part.
Step 9: Reinstallation Process
Now come to the reinstall a replacement fuse box part. If you are worried about mixing and matching all the harness connectors, you can take a picture or a quick video with your phone to not lose your concentration and attach them properly.
Before reinstall, double-check the connectors one more time to make sure everything is excellent and secure. Check any metallic objects from the viewing window. Check if the section is safe for proper installation or not.
When you reinstall the harness connector, you will hear a clicking sound, which means you connect them correctly. Do not over tighten the fasteners. Also, reinstall your alternator and starter wires.
Step 10: Starting the Car Engine
Start the vehicles and test the miscellaneous systems if it is working correctly. Check the fuses one by one for better understand.
Remove Wires from a Fuse Box
For removing wires from a fuse box, you need to organize all the things properly. After completely assembles a fuse box, remember the pin position so that you can separate the crossed wires properly.
If you take a closer look at your fuse box, you will see it has two halves, and the locking features separate those two pieces so that you can replace half of it. So let’s start untangling the wires.
- The first thing you have to do is separate the halves because it will prevent damaging the fuse box. Take a more massive pick and go to the groove that separates those two fuse box halves. Force and slide them apart.
- Swap the damage section, and your job will be done in thirty minutes. Break it down and replace one half at a time. There are other pieces to a fuse box assembly, such as the lower cover and upper cover. You can easily snap into this in a place and pop up quickly. Also, they have thumb holes to hold it with your thumb to release the liver from the fuse box.
- Now took the covers off gluten the tap cover and go to the relay section. Grab the fuel pump relay, pop it out then expose the terminals from the front face. There is a variety of locking tabs in the fuse box, and you have to remove them.
- After removing them, extract the terminals and pick a screwdriver. Pick a wire and twist it around with your forefinger and give a little bit of pressure. Now go inside the fuse box, lift the locking tab then extract the terminal.
- Check out the box power supply to make everything safe. Also, check the fuse functions and other safety issues.
- After extracting, reinstall it into the replacement assembly so you will not forget the pin position.
- Please put them in the same position so you can pull one wire out and replace it in the same spot. Keeping the configuration in the same place can be tricky, so when you extract the fuse box power section, peel the wires back and expose the shiny metal open, you it will be visible. It is also called a bush bar.
Last Few Words
When you are swapping the fuse box power section, make sure the bus bar is in the same position. Check out the box power supply and the safety of that.
If you learn those mentioned steps correctly, you do not have to hire professionals to remove the fuse box, and it will save your money.