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Fuse box diagram (fuse layout), location, and assignment of fuses and relays Lincoln Navigator Mk4 (U554) (2018, 2019, 2020).
Checking and Replacing Fuses
Fuses and circuit breakers protect your vehicle’s electrical system from overloading. If electrical components in the vehicle are not working, a fuse may have blown. Check the appropriate fuses before replacing any electrical components.
Look carefully at the fuse – a broken wire within the fuse identifies blown fuses. If you are not sure or if it is too dark to see, try replacing the suspected fuse with one of the same value that you know is good.
In case if you do not have a spare fuse, in an emergency you can pull out fuses, which may be dispensable for normal driving (for example, audio system, cigarette lighter, OBD, seat heater, and the like), and use it if its amperage rating is the same.
Notice
- Always switch off the ignition system and the affected electrical circuit before replacing a fuse.
- Always disconnect the battery before servicing high current fuses.
- Never use a fuse of a higher amperage rating than that indicated, or use any other object in place of a fuse, even as a temporary fix. This can cause extensive damage or even fire.
- If the replaced fuses blows again – contact a qualified and equipped service center.
Passenger Compartment Fuse Box Diagram
The fuse panel is under the right-hand side of the instrument panel.
To remove the trim panel for access to the fuse box, pull the panel toward you and swing it out away from the side and remove it. To reinstall it, line up the tabs with the grooves on the panel, then push it shut.
| № | A | Circuit Protected |
|---|---|---|
| 1 | - | - |
| 2 | 7.5 | Driver seat switch |
| 3 | 20 | Driver door unlock |
| 4 | 5 | Trailer brake controller (TBM) |
| 5 | 20 | Revel II amplifier |
| 6 | 10 | - (spare) |
| 7 | 10 | - (spare) |
| 8 | 10 | - (spare) |
| 9 | 10 | Rear seat entertainment module (RSEM), Automatic heads up display |
| 10 | 5 | Wireless accessory charger module (WACM), Hands free liftgate module, Power liftgate module Logic (PLGM) |
| 11 | 5 | Combined sensor module (CSM), Keypad |
| 12 | 7.5 | Cluster, Smart datalink connector Logic (SDLC), Electronic control panel (ECP) |
| 13 | 7.5 | Steering column control module (SCCM) (Logic), Gear shift module (GSM) |
| 14 | 10 | Extended power mode module (EPM), Brake Switch |
| 15 | 10 | Smart datalink connector Power (SDLC) |
| 16 | 15 | Liftglass release relay |
| 17 | 5 | Telematics control unit - modem |
| 18 | 5 | Push-button start switch |
| 19 | 7.5 | - (spare) |
| 20 | 7.5 | Headlamp control module (HCM) |
| 21 | 5 | In-car temperature and humidity sensor |
| 22 | 5 | EC mirror, 2nd row heated seat module |
| 23 | 10 | Moonroof (logic), Inverter (LIN logic), Power window switch, Power mirror switch, DVD player (if equipped) |
| 24 | 20 | Central lock relay, Central unlock relay |
| 25 | 30 | Left front door zone module (DZM) |
| 26 | 30 | Right front door zone module (DZM) |
| 27 | 30 | Moonroof- Tilt, Vent, Slide |
| 28 | 20 | Revel II Amp |
| 29 | 30 | Left rear door zone module (DZM) |
| 30 | 30 | Right rear door zone module (DZM) |
| 31 | 15 | Adjustable column and pedal memory module (CAPM) |
| 32 | 10 | Accessory protocol interface module (APIM) (Media Gateway Module or SYNC), Drive mode switch module (DMSM) (if equipped), Radio frequency transceiver module (RTM), Rear HVAC control |
| 33 | 20 | Audio control module (ACM), Rear audio control module (RACM), Remote CD mechanism (if equipped) |
| 34 | 30 | Run/start relay |
| 35 | 5 | Extended power mode module (EPM) |
| 36 | 15 | Image processing module A (IPMA), Automated Park Assist Module Continuous control damping module (CCD Module) |
| 37 | 20 | Heated steering wheel |
| 38 | 30 | Circuit Breaker: Left rear power window, Right rear power window |
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Engine Compartment Fuse Box Diagram
The power distribution box is in the engine compartment. It has high-current fuses that protect your vehicle’s main electrical systems from overloads.
| № | A | Circuit Protected |
|---|---|---|
| 1 | 25 | Horn |
| 2 | 50 | Fan 1 |
| 3 | 30 | Front wiper motor |
| 4 | - | - |
| 5 | 30 | Starter relay |
| 6 | 20 | Power point #1 |
| 8 | 20 | Power point #2 |
| 10 | 5 | Rain sensor |
| 12 | - | - |
| 13 | 10 | 4X4 module, Heated backlite, Heated mirror relay coil, Heated wiper park relay coil, Transmission isolation relay coil |
| 14 | 15 | Transmission coil module |
| 15 | 15 | RH-LDM, LH-LDM, Voltage quality module, Blindspot information system, Cruise control module, Tailgate applique, Image processing module B |
| 16 | 10 | Powertrain control module (PCM) run/start feed |
| 17 | 10 | Anti-lock brake system (ABS) run/start feed |
| 18 | 10 | Electronic power assist steering, run/start feed |
| 19 | - | - |
| 20 | 40 | Front blower |
| 21 | 40 | Passenger seat motors |
| 22 | 20 | - |
| 23 | 10 | Alternator A-line |
| 24 | 30 | Trailer brake control module |
| 25 | 50 | Body control module power 1 |
| 26 | 50 | Electronic fan 3 |
| 27 | 40 | Driver seat motors |
| 28 | 15 | Rear heated seats |
| 29 | 10 | 4x4 integrated wheel end solenoid |
| 30 | 2 5 | Trailer tow class ll-IV battery charge |
| 31 | 50 | Power folding seat module |
| 32 | 10 | A/C clutch |
| 33 | - | - |
| 34 | - | - |
| 35 | 20 | Vehicle power 4 |
| 36 | 10 | Vehicle power 3 |
| 37 | 25 | Vehicle power 2 |
| 38 | 25 | Vehicle power 1 |
| 39 | - | - |
| 41 | 50 | Inverter |
| 43 | 20 | Trailer tow light module class ll-IV |
| 45 | 20 | Front/rear washer pump |
| 46 | 7.5 | Family entertainment system |
| 47 | - | - |
| 48 | - | - |
| 49 | - | - |
| 50 | 30 | Fuel pump |
| 51 | 20 | Power point #3 |
| 52 | 50 | Body control module (BCM) voltage quality monitor (VQM) |
| 53 | 25 | Trailer tow park lamps relay |
| 54 | 40 | Electronic limited slip differential (ELSD) relay |
| 55 | 40 | Auxiliary blower |
| 56 | 20 | Power point #4 |
| 58 | 5 | Front driver and passenger seats - belt tension reducer |
| 59 | - | - |
| 60 | 5 | Lincoln start lamp |
| 61 | 25 | Right-hand enhanced exterior lighting (EEL) module (R64) |
| 62 | 25 | Left-hand enhanced exterior lighting (EEL) module (R64) |
| 63 | 25 | 4X4 module |
| 64 | - | - |
| 65 | - | - |
| 66 | - | - |
| 67 | - | - |
| 69 | - | - |
| 70 | 40 | Anti-lock brake system (ABS) / park brake module |
| 71 | 25 | 4X4 module |
| 72 | - | - |
| 73 | - | - |
| 74 | 10 | Trailer tow backup lamps |
| 75 | - | - |
| 76 | 50 | Body control module (BCM) run power 2 |
| 77 | 30 | Climate control (heated/vented) seat module |
| 78 | 20 | - |
| 79 | - | - |
| 80 | 10 | Heated wiper park |
| 81 | - | - |
| 82 | - | - |
| 83 | 15 | Transmission control module (TCM) power |
| 84 | - | - |
| 85 | - | - |
| 86 | 5 | USB smart charger #5 |
| 87 | 5 | USB smart charger #3 |
| 88 | 10 | Multi contour seats relay |
| 89 | 40 | Power running boards |
| 91 | 30 | Power liftgate module |
| 93 | 15 | Heated mirrors |
| 94 | 5 | USB smart charger #1 |
| 95 | 10 | USB smart charger #2 |
| 96 | 30 | Rear wiper motor relay |
| 97 | 40 | Intercooler puller fan relay |
| 98 | 15 | Transmission oil pump |
| 99 | 40 | Heated backlight |
| 100 | 20 | Power point #5 |
| 101 | 25 | Electric fan 2 |
| 102 | - | - |
| 103 | 20 | - (spare) |
| 104 | - | - |
| 105 | - | - |
| R02 | Electric fan 2 | |
| R05 | Powertrain control module (PCM) | |
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