Repair fuses: 2021 Infiniti QX80 Fuse Diagram and Relay Guide
The 2021 Infiniti QX80’s fuse diagram and relay system are important parts for fixing electricity problems and keeping the car running at its best. The fuse diagram shows the whole layout of the car’s fuse box and shows where each fuse and switch is located and what it does. By looking at this diagram in the owner’s manual, owners can correctly find and replace blown fuses, making sure that important car systems keep working. Knowing the 2021 Infiniti QX80’s switch diagram and relay system lets owners fix electrical problems quickly and correctly, which increases safety and peace of mind on the road.
2024 INFINITI QX80 Specs, Price, Features, Mileage and Review
FUSES
ENGINE COMPARTMENT
WARNING
Never use a fuse of a higher or lower amperage rating than that specified on the fuse box cover. This could damage the electrical system or electronic control units or cause a fire.
If any electrical equipment does not operate, check for an open fuse.
- Be sure the ignition switch is pushed to the OFF or LOCK position and the headlight switch is turned to OFF.
- Open the engine hood and remove the cover on the battery.
- Remove the fuse/fusible link holder cover 1, 2, 3 or 4.
- Remove the fuse with the fuse puller.
- If the fuse is open A, replace it with a new fuse B. Spare fuses are stored in the passenger compartment fuse box.
- If a new fuse also opens, have the electrical system checked and repaired. It is recommended you visit an INFINITI retailer for this service.
Fusible links
If any electrical equipment does not operate and fuses are in good condition, check the fusible links. If any of these fusible links are melted, replace only with genuine INFINITI parts.
PASSENGER COMPARTMENT
WARNING
Never use a fuse of a higher or lower amperage rating than that specified on the fuse box cover. This could damage the electrical system or electronic control units or cause a fire.
If any electrical equipment does not operate, check for an open fuse.
- Be sure the ignition switch is pushed to the OFF or LOCK position and the headlight switch is turned to OFF.
- Open the fuse box lid.
- Remove the fuse with the fuse puller A.
- If the fuse is open, replace it with a new fuse.
- If a new fuse also opens, have the electrical system checked and repaired. It is recommended you visit an INFINITI retailer for this service. Spare fuses are stored in the fuse box.
Extended storage fuse switch (if so equipped)
To reduce battery drain, the extended storage fuse switch comes from the factory switched off. Prior to delivery of your vehicle, the switch is pushed in (switched on) and should always remain on.
If the extended storage fuse switch is not pushed in (switched on), the “Shipping Mode On, Push Storage Fuse” warning may appear on the vehicle information display. See “Vehicle information display”. If any electrical equipment does not operate, remove the extended storage fuse switch and check for an open fuse.
NOTE: If the extended storage fuse switch malfunctions or if the fuse is open, it is not necessary to replace the switch. In this case, remove the extended storage fuse switch and replace it with a new fuse of the same rating.
How to remove the extended storage fuse switch:
1. To remove the extended storage fuse switch, be sure the ignition switch is in the OFF or LOCK position.
2. Be sure the headlight switch is in the OFF position.
3. Remove the fuse box cover.
4. Pinch the locking tabs 1 found on each side of the storage fuse switch.
5. Pull the storage fuse switch straight out from the fuse box 2.
INTELLIGENT KEY BATTERY REPLACEMENT
CAUTION: Be careful not to allow children to swallow the battery and removed parts.
Replace the battery as follows:
- Release the lock knob at the back of the Intelligent Key and remove the mechanical key.
- Insert a small screwdriver into the slit of the corner and twist it to separate the upper part from the lower part. Use a cloth to protect the casing.
- Replace the battery with a new one.
Recommended battery: CR2025 or equivalent.- Do not touch the internal circuit and electric terminals as it could cause a malfunction.
- Hold the battery by the edges. Holding the battery across the contact points will seriously deplete the storage capacity.
- Make sure that the + side faces the bottom of the case.
- Align the tips of the upper and lower parts 1, and then push them together until it is securely closed 2.
- Push the buttons two or three times to check its operation.
It is recommended you visit an INFINITI retailer if you need any assistance for replacement.
FAQs
The fuse box is a critical component that houses electrical fuses designed to protect various electrical circuits in the vehicle. Fuses act as safety devices by interrupting the electrical flow in case of overloads or short circuits, preventing damage to the vehicle’s electrical components.
The fuse box can be located in either the engine compartment or the interior of the vehicle, often beneath the dashboard on the driver’s side. The exact location may vary depending on the vehicle’s trim level and configuration.
The fuse box contains different types of fuses, including blade-type fuses and mini-blade-type fuses. These fuses come in various amperage ratings, which determine their capacity to handle electrical current.
A blown fuse can be identified by a visible break or burnt-out filament inside the fuse. The filament should appear continuous; a broken or burnt filament indicates a blown fuse.
It is not recommended to replace a blown fuse with one of a higher amperage rating. Doing so can result in electrical system damage or even a fire. Always replace fuses with the correct amperage rating specified in the owner’s manual.
Changing a fuse is a relatively simple task and can be done by the vehicle owner.
Before changing a fuse, ensure that the vehicle is turned off, and the ignition key is removed to prevent electrical accidents. Also, have the correct replacement fuse with the proper amperage rating ready.
If a newly replaced fuse continues to blow, it may indicate an underlying electrical problem. In such cases, it is best to consult a professional technician for a thorough diagnosis and repair.
While aftermarket fuses may be compatible, it is recommended to use genuine or high-quality replacement fuses that match the specifications mentioned in the owner’s manual. These fuses are designed to meet the vehicle’s electrical system requirements.
Useful Links
View Full PDF: Infiniti QX80 2021 User Manual | Auto User Guide
2024 INFINITI QX80 Specs, Price, Features, Mileage and Review