Blown Fuse Indicator: 2021 Lincoln Nautilus | Fuses and Fuse Diagram
The 2021 Lincoln Nautilus’s Blown Fuse Indicator is an important part of keeping an eye on the car’s electrical system. This new feature, which is part of the fuse diagram section of the Owner’s Manual, lets drivers know visually when a fuse has popped. Additionally, to make things easier for users and safer, the sign lights up, drawing attention to the specific circuit that may have broken down. This proactive method helps Lincoln Nautilus owners quickly find and fix electrical problems, which cuts down on downtime and makes driving more enjoyable. The Blown Fuse Indicator shows how committed Lincoln is to giving its discerning customers a sophisticated and reliable driving experience by mixing cutting-edge technology with an easy-to-use design.
2024 LINCOLN NAUTILUS Review, Price, Features And Mileage (Brochure)
FUSE PRECAUTIONS
WARNING: Always disconnect the battery before servicing high-current fuses.
WARNING: To reduce the risk of electrical shock, always replace the cover to the power distribution box before reconnecting the battery or refilling fluid reservoirs.
WARNING: Always replace a fuse with one that has the specified amperage rating. Using a fuse with a higher amperage rating can cause severe wire damage and could start a fire.
UNDER HOOD FUSE BOX
LOCATING THE UNDER HOOD FUSE BOX
ACCESSING THE UNDER HOOD FUSE BOX
Accessing the Under Hood Fuse Box -Top
Accessing the Under Hood Fuse Box -Bottom
- Release the latches on both sides of the fuse box.
- Raise the inboard side of the fuse box from the cradle.
- Move the fuse box toward the center of the engine compartment.
- Pivot the outboard side of the fuse box to access the bottom side.
IDENTIFYING THE FUSES IN THE UNDER-HOOD FUSE
BOX Under Hood Fuse Box – Top
| Fuse Number | Fuse Rating | Protected Component |
| 1 | 30 A | Second-row power seat. |
| 2 | — | Starter relay. |
| 3 | 15 A | Rear window wiper. Rain sensor. Rear wash relay coil. |
| 4 | — | Blower motor relay. |
| 5 | — | Not used. |
| 6 | — | Not used. |
| 7 | 20 A | Powertrain control module – vehicle power 1. |
| 8 | 20 A | Powertrain control module – vehicle power 2. Canister vent. Vapor blocking value. Heated oxygen post. |
| 9 | — | Powertrain control module relay. |
| 10 | 20 A | Power outlet 5-main bin. |
| 11 | 15 A | Powertrain control module – vehicle power 4. |
| 12 | 15 A | Powertrain control module – vehicle power 3. |
| 13 | — | Not used. |
| 14 | — | Not used. |
| 15 | — | Run-start relay. |
| 16 | 20 A | Power outlet 2 – back of the console. |
| 17 | 20 A | Power outlet 4 – luggage compartment. |
| 18 | — | Not used. |
| 19 | 10 A | Run-start electronic power assist steering. |
| 20 | 10 A | Run/start lighting. |
| 21 | — | Not used. |
| 22 | 10 A | Air conditioner clutch solenoid. |
| 23 | 15 A | Front split view camera. Rear view camera. Forward-looking radar. 360° camera module. Blind spot information system. Voltage quality module (start/stop). |
| 24 | 10 A | Not used (spare). |
| 25 | 10 A | Run-start anti-lock brake system. |
| 26 | 10 A | Run-start powertrain control module. |
| 27 | 5 A | USB power outlet – back of the console. |
| 28 | 10 A | Rear window washer pump. |
| 29 | — | Not used. |
| 30 | — | Not used. |
| 31 | — | Not used. |
| 32 | — | Electronic fan 1 relay. |
| 33 | — | A/C clutch relay. |
| 34 | — | Not used. |
| 35 | — | Not used. |
| 36 | — | Not used. |
| 37 | — | Not used. |
| 38 | — | Electronic fan 2 relays. |
| 39 | — | Electronic fan 3 relays. |
| 40 | — | Horn relay. |
| 41 | — | Left-hand high beam and stop lamp relay. |
| 42 | — | Fuel pump relay. |
| 43 | 15 A | Right-hand high beam and stop lamp. |
| 44 | — | Not used. |
| 45 | — | Not used. |
| 46 | — | Not used. |
| 47 | — | Not used. |
| 48 | 15 A | Left-hand high beam and stop lamp. |
| 49 | — | Not used. |
| 50 | 20 A | Horn. |
| 51 | — | Not used. |
| 52 | — | Not used. |
| 53 | 10 A | Massaging seats. |
| 54 | 10 A | Brake on-off switch. |
| 55 | 10 A | Alternator A-line. |
| 86 | — | Not used. |
Under Hood Fuse Box – Bottom
| Fuse Number | Fuse Rating | Protected Component |
| 56 | — | Not used. |
| 57 | — | Not used. |
| 58 | 30 A | Fuel pump feed. |
| 59 | 40 A | Electronic fan 3. |
| 60 | 40 A | Electronic fan 1. |
| 61 | — | Not used. |
| 62 | 50 A | Body control module 1. |
| 63 | 25 A | Electronic fan 2. |
| 64 | — | Not used. |
| 65 | 20 A | Front heated seat. |
| 66 | 15 A | Not used (spare). |
| 67 | 50 A | Body control module 2. |
| 68 | 40 A | Heated rear window. |
| 69 | 30 A | Anti-lock brake system valves. |
| 70 | 30 A | Passenger seat. |
| 71 | – | Not used. |
| 72 | — | Not used. |
| 73 | 20 A | Rear heated seats. |
| 74 | 30 A | Driver seat module. |
| 75 | 25 A | Windshield wiper motor. |
| 76 | 30 A | Power liftgate module. |
| 77 | 30 A | Climate-controlled seat module. |
| 78 | 40 A | Trailer tow. |
| 79 | 40 A | Blower motor. |
| 80 | — | Not used. |
| 81 | 40 A | 110 V inverter. |
| 82 | – | Not used. |
| 83 | — | Not used. |
| 84 | 30 A | Starter motor solenoid. |
| 85 | — | Not used. |
| 87 | 60 A | Anti-lock brake system pump. |
BODY CONTROL MODULE FUSE BOX
LOCATING THE BODY CONTROL MODULE FUSE BOX
ACCESSING THE BODY CONTROL MODULE FUSE BOX
To access the fuses in the body control module fuse box, contact an authorized dealer.
2024 LINCOLN NAUTILUS Review, Price, Features And Mileage (Brochure)
IDENTIFYING THE FUSES IN THE BODY CONTROL MODULE FUSE BOX
| Fuse or Relay Number | Fuse Rating | Protected Components |
| 1 | – | Not used. |
| 2 | 10 A | Delayed accessory – power inverter logic, moonroof logic, and driver window switch power. |
| 3 | 7.5 A | Memory seats. |
| Lumbar. Wireless accessory charging. | ||
| 4 | 20 A | Subwoofer amplifier. |
| 5 | – | Not used. |
| 6 | 10 A | Security horn relay. |
| 7 | 10 A | Gearshift module. |
| 8 | 5 A | Power liftgate module. Hands-free liftgate module. Embedded modem. |
| 9 | 5 A | Keypad. Combined sensing module. |
| 10 | – | Not used. |
| 11 | – | Not used. |
| 12 | 7.5 A | Climate control module. Enhanced central gateway module. |
| 13 | 7.5 A | Instrument cluster. Steering column control module. |
| 14 | 15 A | Not used. |
| 15 | 15 A | SYNC module. |
| 16 | – | Not used. |
| 17 | 7.5 A | Headlamp control module. |
| 18 | 7.5 A | Not used (spare). |
| 19 | 5 A | Headlamp switch. Bluetooth low energy module. |
| 20 | 5 A | Push button ignition switch. |
| 21 | 5 A | Not used (spare). |
| 22 | 5 A | Not used (spare). |
| 23 | 30 A | Driver door window and mirror. Driver door module. Driver door lock indicator. Driver lock switch illumination. |
| 24 | 30 A | Moonroof. |
| 25 | 20 A | Amplifier. |
| 26 | 30 A | Front passenger door window and mirror. Front passenger door module. Front passenger lock indicator. Front passenger switch illumination. |
| 27 | 30 A | Left-hand rear door module. |
| 28 | 30 A | Right-hand rear door module. |
| 29 | 15 A | Enhanced central gateway power – OBD connector. |
| 30 | 5 A | Not used (spare). |
| 31 | 10 A | Radio transceiver module. Multi-function display. Integrated control panel. |
| 32 | 20 A | Radio. |
| 33 | – | Not used. |
| 34 | 30 A | Run-start bus (fuse 17, 18, 21, 22, 35, 36, 37, circuit breaker 38). |
| 35 | 5 A | Passenger airbag deactivation indicator. |
| 36 | 15 A | Rear heated seat module. Suspension module. |
| 37 | 20 A | Heated steering wheel. Auto-dimming interior mirror. Automatic high beam and lane departure mirror module. Parking assist control module. |
| 38 | 30 A | Circuit breaker. |
IDENTIFYING FUSE TYPES
- Micro 2.
- Micro 3.
- Maxi.
- Mini.
- M Case.
- J Case.
- J Case Low Profile.
- Slotted M Case.
FUSES – TROUBLESHOOTING
FUSES – FREQUENTLY ASKED QUESTIONS
When do I need to check a fuse?
If electrical components in the vehicle are not working.
When do I need to replace a fuse?
If a fuse has blown.
How do I identify a blown fuse?
You can identify a blown fuse by a broken wire within the fuse.
FAQs
The blown fuse indicator alerts the driver when a fuse in the vehicle’s electrical system has blown.
The blown fuse indicator is typically a symbol or light on the dashboard, indicating a malfunction in the electrical system.
The fuse diagram is usually located in the owner’s manual, providing details about the location and function of each fuse.
The indicator serves as an early warning system, helping drivers identify and address electrical issues promptly.
In most cases, resetting the blown fuse indicator involves replacing the faulty fuse and fixing the underlying issue causing the fuse to blow.
Overloaded circuits, short circuits, or faulty electrical components can lead to blown fuses.
It’s not advisable to drive with a blown fuse, as it may affect crucial electrical functions in the vehicle.
Regularly inspecting fuses is recommended, especially if you experience electrical issues or the blown fuse indicator lights up.
Yes, the fuse diagram will outline which fuses correspond to specific electrical systems, such as lights, power windows, or the radio.
Generally, replacing a fuse is a straightforward process. The owner’s manual provides instructions on the correct procedures.
If the indicator persists, there may be an underlying electrical issue, and it’s advisable to seek professional assistance.
While there may not be a separate schedule, regular vehicle maintenance, including electrical system checks, is essential to prevent issues.
Useful Link:
View full PDF: 2021 Lincoln Nautilus User Guide | Auto User Guide
2024 LINCOLN NAUTILUS Review, Price, Features And Mileage (Brochure)
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