Table of Contents
Fuse Diagrams: 2019 Toyota Highlander Fuses and Relay Guide
To quickly find and fix electrical problems in a 2019 Toyota Highlander, you need to know how to read the fuse layouts. As a road map, the fuse maps show where each fuse and relay is located and what it does in the car’s electrical system. You can usually find these diagrams in the owner’s guidebook or on the covers of the fuse boxes. They show where the fuses are located, how much power they provide, and what circuits they connect to. When owners look at the fuse designs, they can find the exact fuse that is causing the problem, whether it’s an accessory that doesn’t work or an electrical part that won’t respond. With this guide, drivers can easily replace blown fuses, making sure that the electrical system in their Toyota Highlander works well.
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.
- Vehicles without a smart key system:
Turn the engine switch to the “LOCK” position. Vehicles with a smart key system: Turn the engine switch off. - Open the fuse box cover.
- Engine compartment (type A fuse box) 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.
- Engine compartment (type A fuse box) Push the tab in and lift the lid off.
- Remove the fuse with the pull-out tool.
Only type A fuses can be removed using the pullout tool. - Check if the fuse is blown.
- Normal fuse
- Blown fuse
Type A and B:
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 C:
Contact your Toyota dealer.
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 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.
2023 – 2024 Toyota Highlander Review, Price, Features, Mileage (Brochure)
How to Replace the Fuse of the 2019 Toyota Highlander
Replacing a fuse in a 2019 Toyota Highlander is relatively straightforward. 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 in one of two places. The primary fuse box is usually located in the engine bay, near the battery. The secondary fuse box may be located under the dashboard on the driver’s side.
- Identify the Correct Fuse: The fuse box covers a diagram that shows the location and function of each fuse. Find the fuse that corresponds to the component that isn’t working properly.
- Turn Off the Vehicle: Before you start replacing fuses, turn off the ignition and any electrical components associated with the fuse you’re replacing.
- Remove the Fuse: Using the fuse puller tool provided in the fuse box or a pair of needle-nose pliers, grasp the fuse firmly and pull it straight out of its socket. Be gentle to avoid damaging the fuse or the fuse box.
- Check the Fuse: Inspect the fuse to determine if it’s blown. You can usually tell if the metal strip inside the fuse is broken or melted. If the fuse appears intact, it may not be the source of the problem.
- Replace the Fuse: If the fuse is blown, replace it with a new one with the same amperage rating. Make sure the new fuse is securely seated in the socket.
- Test the Component: After replacing the fuse, turn the ignition back on and test the component to see if it’s functioning properly. If the fuse blows again immediately or soon after replacement, there may be an underlying issue that needs to be addressed.
- Replace the Fuse Box Cover: Once you’ve verified that the component is working and the fuse is installed correctly, replace the fuse box cover and ensure it’s securely fastened.
- Dispose of the Old Fuse: If the old fuse is blown, safely dispose of it. Do not reuse a blown fuse, as it could lead to further electrical problems.
- Record the Replacement: It’s a good idea to keep track of any fuses you replace. You can note it down in your maintenance log for future reference.
Tips:
- Always use a fuse with the correct amperage rating to prevent electrical issues or damage to the vehicle.
FAQs
Where is the fuse box located in a 2019 Toyota Highlander?
The fuse box in a 2019 Toyota Highlander is typically located in the engine compartment.
How many fuse boxes does the 2019 Toyota Highlander have?
The Highlander usually has two fuse boxes: one in the engine compartment and another inside the cabin.
What is the purpose of the fuses in a Toyota Highlander?
Fuses protect electrical components by breaking the circuit if there is an overload or short circuit, preventing damage to the components or electrical system.
How can I identify a blown fuse in my Highlander?
Look for a fuse with a broken filament or a discolored appearance.
What tools do I need to replace a blown fuse in a 2019 Toyota Highlander?
You typically only need a pair of needle-nose pliers or the fuse puller tool provided in the fuse box.
Can I replace a blown fuse with a higher amp-rated one in the2019 Toyota Highlander?
No, it’s not recommended. Always replace a blown fuse with the same amp rating to avoid damaging your vehicle’s electrical system.
How do I access the interior fuse box in the Highlander?
The interior fuse box is usually located near the driver’s sidekick panel or beneath the dashboard.
Are there spare fuses included with the Highlander?
Many vehicles come with spare fuses in the fuse box or a compartment near it.
What are common reasons for blown fuses in a Toyota Highlander?
Blown fuses can result from issues like a short circuit, faulty electrical components, or overloading the system
How do I replace a fuse for the headlights in a 2019 Toyota Highlander?
Locate the fuse for the headlights in the fuse box, use the fuse puller or pliers to remove the blown fuse, and replace it with a new one of the same rating.
Can I fix a blown fuse in my Highlander without professional help?
Yes, replacing a blown fuse is a simple task that can be done without professional assistance, provided you follow safety precautions and use the correct replacement fuses.
What should I do if I keep blowing fuses in my Highlander?
If you repeatedly blow fuses, it may indicate an underlying electrical issue.
Is it possible to check fuses in a Toyota Highlander without removing them?
Some vehicles have transparent fuses, allowing you to visually inspect them without removal. However, for most fuses, you need to remove them for a thorough inspection.
Can I drive my Highlander with a blown fuse?
It depends on the function of the blown fuse. Certain fuses control critical systems, and driving without them may not be safe or feasible.
Where can I purchase replacement fuses for my Toyota Highlander?
Replacement fuses are widely available at auto parts stores, and some general retailers may also carry them. Ensure you get the correct amp rating for your specific needs.
Useful Links
View Full PDF:Toyota Highlander 2019 User Manual | Auto User Guide
2023 – 2024 Toyota Highlander Review, Price, Features, Mileage (Brochure)
Dashboard Cluster: 2019 Toyota Highlander Warning Indicators Guide
- Tags2019 Toyota, Fuse Diagrams, Relay Guide, Toyota Highlander, User Manual
