2020 Toyota Highlander Replacing Fuses | Fuse Diagrams Guide
Changing the fuses in a 2020 Toyota Highlander is an important part of keeping the car in good shape because it makes sure that the electrical parts work properly. To find the right fuse to change, it’s important to understand the fuse diagrams that come with the car or are printed on the fuse box cover. When an electrical part, like the headlights or interior lights, stops working, checking and changing the fuse that goes with it can often fix the problem. Knowing where the fuses are and what electrical systems they control makes troubleshooting easier and makes sure that fixes are done correctly. Whether a blown fuse is causing a minor problem or a critical component not working, having a complete fuse diagram guide makes replacing fuses in a 2020 Toyota Highlander easier and makes sure the vehicle keeps running smoothly.
2023 – 2024 Toyota Highlander Review, Price, Features, 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.
Checking and replacing fuses
- Turn the engine switch off.
- Open the fuse box cover.
Engine compartment: type A fuse box (if equipped)
Push the tab in and lift the lid off.
Engine compartment: type B fuse box
Push the tab in and lift the lid off.
Under the driver’s side instrument panel
Remove the lid.
Make sure to push the claw when removing/installing the lid.
- Remove the fuse.
Only type A fuse can be removed using the pullout tool.
- Check if the fuse is blown.
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
- Normal fuse
- Blown fuse
Type B
- Normal fuse
- Blown fuse
Type C
- Normal fuse
- Blown fuse
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.
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 break-downs 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.
2023 – 2024 Toyota Highlander Review, Price, Features, Mileage (Brochure)
How to Replace the Fuse of the 2020 Toyota Highlander
Replacing a fuse in the 2020 Toyota Highlander is a straightforward process, ensuring the swift restoration of electrical functions within the vehicle. 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 Toyota Highlander is typically located either under the dashboard on the driver’s side or in the engine compartment.
- Turn Off the Vehicle: Before you start replacing the fuse, make sure the vehicle is turned off completely to avoid any electrical mishaps.
- Identify the Blown Fuse: Using the fuse diagram on the inside of the fuse box cover, identify the fuse that corresponds to the malfunctioning component.
- Remove the Blown Fuse: Using a fuse puller tool or a pair of needle-nose pliers, carefully grip and pull out the blown fuse from its slot. Be gentle to avoid damaging the fuse or the fuse box.
- Inspect the Fuse: Take a close look at the fuse to confirm that it’s blown. A blown fuse will have a broken filament or a discolored appearance.
- Select a Replacement Fuse: Refer to the fuse diagram to determine the appropriate amperage and type of fuse needed for replacement. It’s essential to use a fuse with the same amperage rating as the blown one to ensure safe operation.
- Insert the New Fuse: Carefully insert the new fuse into the empty slot, making sure it fits securely. Avoid forcing the fuse into place.
- Test the Component: Once the new fuse is in place, turn on the vehicle and test the component associated with the fuse to ensure that it’s functioning correctly.
- Replace the Fuse Box Cover: If applicable, replace the fuse box cover and ensure it’s securely in place.
- Dispose of the Blown Fuse: Safely dispose of the blown fuse, as it’s no longer usable
Tips:
- Always use a fuse with the correct amperage rating to prevent electrical issues or damage to the vehicle.
FAQs
There are typically two fuse boxes in the 2020 Toyota Highlander. One is located under the dashboard on the driver’s side, and the other is in the engine compartment.
To access the fuse box under the dashboard, you need to open the driver’s side door and locate the panel on the side of the dashboard. Pry it open to reveal the fuse box.
The fuse box in the engine compartment is usually located near the battery. Simply unlatch the cover to access the fuses.
You typically only need a pair of needle-nose pliers or a fuse puller tool, which may come with your vehicle’s fuse box.
Replacement fuses can be found at auto parts stores, hardware stores, or through Toyota dealerships.
The amperage rating should be printed on the top of the fuse. Be sure to replace it with a fuse of the same rating.
Some vehicles may come with spare fuses stored in the fuse box.
Common reasons for blown fuses include short circuits, overloading the circuit, or faulty electrical components.
It’s important to use the correct type and amperage rating of fuse specified for your vehicle to avoid damaging the electrical system.
It’s not usually necessary to disconnect the battery when replacing fuses, but it may be a good safety precaution.
The fuse diagram is often printed on the fuse box cover.
Always replace fuses with the ignition turned off to avoid the risk of electric shock or damage to electrical components.
No, it’s important to always replace fuses with ones of the same amperage rating to prevent damage to the electrical system.
If you continue to experience fuse issues, it may indicate a more significant electrical problem that requires professional diagnosis and repair.
Fuses typically only need to be replaced if they blow, but it’s a good idea to check them periodically as part of your vehicle maintenance routine.
Useful Links
View Full PDF: Toyota Highlander 2020 User Manual | Auto User Guide
2023 – 2024 Toyota Highlander Review, Price, Features, Mileage (Brochure)
Warning Indicators: 2020 Toyota Highlander Instrument Cluster Guide