How to Fix a Blown Fuse: 2021 Toyota Prius Fuse Diagrams Guide
Should you find that a fuse has blown in your 2021 Toyota Prius, you should take care of it right away to make sure that the electrical systems work properly. It can save you time and money to know how to fix a blown switch. In this guide, we’ll show you detailed pictures of the 2021 Toyota Prius that will help you find the fuse box and find the right fuses for the different parts. If your Prius’s radio, auto windows, or headlights don’t work, it can be easier to figure out what’s wrong and fix it. So, let’s get started on this guide that will give you the skills you need to quickly fix blown fuses and get your Prius back on the road.
2023 – 2024 Toyota Camry Review, Specs, Price, Mileage (Brochure)
Checking and replacing fuses
If any of the electrical components do not operate, a fuse may have blown. If this happens, check and replace the fuses as necessary.
- Turn the power switch off.
- Open the fuse box cover.
- Engine compartment type A fuse box
While pushing the 2 claws, lift the cover. When closing the cover, make sure to attach the 2 claws. - Engine compartment type B fuse box
While pushing the 3 claws, lift the cover. When closing the cover, make sure to attach the 3 claws. - Left side instrument panel
Remove the lid. Make sure to press the claw during removal or installation.
- Engine compartment type A fuse box
- Remove the fuse.
Only type A fuse can be removed using the pullout tool.
- Check if the fuse is blown.
- Normal fuse
- Blown fuse
Replace the blown fuse with a new fuse of an appropriate amperage rating. The amperage rating can be found on the fuse box lid.
Type A
Type B
Type C
After a fuse is replaced
- If the lights do not turn on even after the fuse has been replaced, a bulb may need replacement.
- If the replaced fuse blows again, have the vehicle inspected by your Toyota dealer.
If there is an overload in a circuit
The fuses are designed to blow, protecting the wiring harness from damage.
2023 – 2024 Toyota Camry Review, Specs, Price, Mileage (Brochure)
When replacing light bulbs
Toyota recommends that you use genuine Toyota products designed for this vehicle. Because certain bulbs are connected to circuits designed to prevent overload, non-genuine parts or parts not designed for this vehicle may be unusable.
WARNING
To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failure to do so may cause damage to the vehicle, and possibly a fire or injury.
- Never use a fuse of a higher amperage rating than that indicated, or use any other object in place of a fuse.
- Always use a genuine Toyota fuse or equivalent.
Never replace a fuse with a wire, even as a temporary fix. - Do not modify the fuses or fuse boxes.
NOTICE
Before replacing fuses
Have the cause of electrical overload determined and repaired by your Toyota dealer as soon as possible.
How to Replace the Fuse of the 2021 Toyota Prius
Replacing a fuse in a 2021 Toyota Prius is a relatively simple process. Here’s a step-by-step guide:
Materials:
- The new fuse of the correct amperage.
- Fuse puller or needle-nose pliers.
Instructions:
- Locate the Fuse Box: The fuse box in the 2021 Toyota Prius is typically located under the dashboard on the driver’s side. It may also be located in the engine compartment.
- Turn Off the Vehicle: Before you begin, ensure that the vehicle is turned off completely, including all lights and accessories.
- Identify the Blown Fuse: Use the fuse diagram on the fuse box cover to identify the fuse that needs to be replaced. You’ll typically find a list of devices or systems controlled by each fuse, making it easier to pinpoint the faulty one.
- Remove the Fuse: Using a fuse puller tool or a pair of needle-nose pliers, carefully grasp the blown fuse and pull it straight out of its slot. Be gentle to avoid damaging the fuse box or surrounding components.
- Inspect the Fuse: Take a moment to visually inspect the fuse. If the metal wire inside is broken or appears melted, the fuse is blown and needs to be replaced.
- Select the Replacement Fuse: Choose a replacement fuse with the same amperage rating as the blown one. Using a fuse with the wrong rating can cause electrical problems or damage to the vehicle.
- Install the New Fuse: Insert the replacement fuse into the appropriate slot in the fuse box. Make sure it is seated securely and fits snugly into place.
- Test the Circuit: Once the new fuse is installed, turn the vehicle’s ignition to the accessory position and check the device or system that was previously malfunctioning to ensure that it is now functioning properly.
- Replace the Fuse Box Cover: If you removed the fuse box cover, be sure to put it back in place securely to protect the fuses and wiring.
- Dispose of the Old Fuse: Properly dispose of the old, blown fuse. Do not attempt to reuse it, as it is no longer functional.
Tips:
- Always use a fuse with the correct amperage rating to prevent electrical issues or damage to the vehicle.
FAQs
The fuse box in a 2021 Toyota Prius is typically located under the dashboard on the driver’s side.
You may need a pair of needle-nose pliers or a fuse puller tool to remove the blown fuse.
The fuse diagram for a 2021 Toyota Prius is usually located inside the fuse box cover.
The 2021 Toyota Prius typically uses blade-type fuses, also known as spade or plug-in fuses.
Visually inspect the fuse; if the metal strip inside is broken or melted, the fuse is blown.
It’s essential to use a fuse with the same amperage rating as the blown fuse to avoid damaging the vehicle’s electrical system.
It’s recommended to purchase a fuse of the same rating from an auto parts store before attempting to replace the blown fuse.
Use a fuse puller tool or a pair of needle-nose pliers to grasp and pull the blown fuse straight out of its socket.
It’s generally safe to replace a blown fuse without disconnecting the battery, but it’s a good practice to disconnect the negative terminal to avoid electrical shocks.
The interior fuse box in a 2021 Toyota Prius is typically located under the dashboard on the driver’s side.
Open the hood of the vehicle and locate the fuse box cover near the battery. Remove the cover to access the fuses.
Ensure the vehicle is turned off, and the corresponding electrical component is also off to avoid electrical hazards.
Yes, a blown fuse can disrupt the electrical circuit, leading to malfunctions in other vehicle systems.
Useful Links
View Full PDF: 2021 Toyota Prius Owner’s Manual | Auto User Guide
2023 – 2024 Toyota Camry Review, Specs, Price, Mileage (Brochure)