Replacing Fuses: 2019 Toyota Corolla Fuse Diagrams and Relay Guide
It’s easy to replace the fuses in your 2019 Toyota Corolla, which can help return the functioning of several electrical parts in your car. If you know how to read the fuse diagrams and relay guide on the cover of the fuse box, you can quickly fix problems like lights, power windows, or stereos that won’t work. Following this guide will give you the confidence to effortlessly find, change, and fix fuses, keeping your Corolla’s electrical systems running smoothly while you’re on the road.
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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 engine switch off.
- Open the fuse box cover.
- Engine compartment
Push the tab in and lift the lid off.
- Under the driver’s side instrument panel
Remove the lid.
- Engine compartment
- 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
Replace the blown fuse with a new fuse of an appropriate amperage rating. The amperage rating can be found on the fuse box lid.
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.
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.
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How to Replace the Fuse of the 2019 Toyota Corolla
To replace the fuse in a 2019 Toyota Corolla, follow these steps:
Materials:
- The new fuse of the correct amperage.
- Fuse puller or needle-nose pliers.
Instructions:
- Locate the Fuse Box: The fuse box in the 2019 Toyota Corolla is typically located under the dashboard on the driver’s side, near the door. It may also be located in the engine compartment.
- Turn off the Ignition: Before replacing the fuse, make sure the ignition is turned off to prevent any electrical mishaps.
- Identify the Blown Fuse: Use the fuse box diagram, which is usually printed on the fuse box cover to identify the fuse corresponding to the malfunctioning circuit.
- 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 socket. Be gentle to avoid damaging the fuse or the fuse box.
- Inspect the Fuse: Check the metal strip inside the fuse to see if it is broken or burnt. If it is, the fuse is blown and needs to be replaced.
- Select a Replacement Fuse: Choose a new fuse with the same amperage rating as the blown fuse. Using a fuse with the wrong rating can cause electrical problems or even damage the vehicle.
- Install the New Fuse: Insert the new fuse into the empty fuse socket, making sure it is seated securely.
- Test the Circuit: After replacing the fuse, turn the ignition back on and test the circuit to ensure the issue has been resolved. If the fuse blows again immediately or shortly after, there may be a deeper electrical problem that needs to be addressed by a professional.
- Replace the Fuse Box Cover: Once you have confirmed that the new fuse is working correctly, replace the fuse box cover and ensure it is securely fastened in place.
- Dispose of the Old Fuse: Safely dispose of the blown fuse. It’s a good idea to keep spare fuses in your vehicle in case of future emergencies.
Tips:
- Always use a fuse with the correct amperage rating to prevent electrical issues or damage to the vehicle.
FAQs
Fuses may need replacement if they blow due to electrical faults or overloading.
The fuse boxes are typically located under the dashboard on the driver’s side and the hood
To access the interior fuse box, you usually need to open the driver’s side door and remove the cover panel. The exterior fuse box is often located near the battery and has a removable cover.
Typically, you only need a pair of needle-nose pliers or a fuse puller.
A blown fuse typically has a visibly broken wire or a discolored appearance.
No, it’s important to use a fuse with the correct rating to avoid damaging the electrical system.
Some Toyota Corolla models come with spare fuses, but it’s a good idea to keep a variety of replacements on hand.
No, using a higher-rated fuse can lead to damage or fire hazards. Always replace fuses with ones of the same rating.
Relays typically don’t fail as often as fuses, but if a component controlled by a relay isn’t functioning, it may be worth checking or replacing the relay.
Before replacing fuses, it’s important to disconnect the battery to prevent electrical shocks or damage.
It’s generally safer to replace fuses with the vehicle turned off to avoid electrical shorts.
Regularly inspecting and maintaining the vehicle’s electrical system can help prevent fuse-related problems.
Regular maintenance and inspection of electrical components can help prevent blown fuses. Additionally, avoiding overloading circuits and promptly addressing any electrical issues can help prevent fuse failures.
It depends on which system or component the blown fuse affects. However, driving with certain critical systems disabled can be unsafe, so it’s best to address blown fuses promptly.
Always disconnect the battery before working on electrical components to prevent the risk of electrical shock or damage to the vehicle’s electrical system.
Useful Links
View Full PDF: 2019 Toyota Corolla User Manual | Auto User Guide
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