Ford Flex (2013-2019) fuse box and relay Diagrams

Learn about Ford Flex (2013-2019) fuse box and relay’s locations, functions, and maintenance tips for optimal vehicle electrical system.

The Ford Flex continued to stand out through 2013–2019 with its unique boxy design, generous three-row seating, and a growing list of tech features like SYNC infotainment and available all-wheel drive. Supporting all of this is an electrical system protected by fuses and relays, which prevent power surges and short circuits from damaging your vehicle’s wiring and components.

Whether you’re dealing with a power liftgate that won’t open, a dead infotainment screen, or malfunctioning interior lights, checking the fuse box is usually the fastest way to identify the problem. Knowing exactly where your Flex’s fuse boxes and relays are located can save you time and help you avoid unnecessary repair costs.

This guide covers the fuse box and relay locations for the 2013–2019 Ford Flex, including access instructions, safety precautions, and tips for identifying the right fuse or relay.

MUST READ: DYI – How to Check Car Fuses?

(2013-2019) Ford Flex fuse box and relay with Diagram

WARNING

  • Never replace a fuse with one that has a higher amperage rating.
  • A fuse with a too-high amperage could damage the electrical part and cause a fire.
  • On no account should fuses be repaired (e.g. patched up with tin foil or wire) as this may cause serious damage elsewhere in the electrical circuit or cause a fire.
  • If a fuse blows repeatedly, do not keep replacing it. Instead, have the cause for the repeated short circuit or overload tracked and fixed.
  • Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

Ford Flex (2013-2019) fuse assignment

Ford Flex Year of production: 2013, 2014, 2015, 2016, 2017, 2018, 2019

2013 ford flex
2013 ford flex

Where Are the Fuse Boxes Located on the Ford Flex?

The 2013–2019 Ford Flex uses two main fuse box locations: one under the hood and one inside the cabin. Depending on trim level and installed features, some models may also include a small auxiliary relay panel near the rear cargo area.

1. Engine Compartment Fuse Box (Power Distribution Box)

The primary fuse box is located in the engine bay, mounted near the battery on the driver’s side, close to the firewall.

How to access it:

  • Open the hood and locate the black plastic cover near the battery.
  • Release the retaining clips along the edges of the cover, most models use tool-free snap-lock tabs.
  • Lift the cover straight up to expose the fuses and relays inside.

This fuse box protects high-amperage components such as the headlights, engine cooling fan, horn, and starter relay. Since this area is exposed to engine heat and road moisture, make sure the cover is fully reseated after inspection to prevent corrosion.

2. Interior Fuse Panel (Instrument Panel Fuse Box)

The cabin fuse box is located inside the vehicle, typically under the dashboard on the driver’s side, near the left kick panel area.

How to access it:

  • Sit in the driver’s seat and locate the small access panel to the left of the steering column, near the door.
  • Gently pull or unclip the cover, it’s usually secured with simple plastic retaining clips.
  • Once removed, you’ll see the fuse layout along with several compact relays.

This panel controls interior circuits such as the SYNC infotainment system, power windows, power seats, dashboard lights, wipers, and central locking system.

3. Rear Cargo Area Auxiliary Relay Panel (If Equipped)

Given the Flex’s available features like a power liftgate, second-row power fold seats, and rear entertainment options, some trims include a small auxiliary relay panel located in the rear cargo area, often near the interior trim panel or beside the cargo light.

How to access it:

  • Open the rear liftgate and check along the interior side panels near the cargo area for a small access cover or exposed relay bracket.
  • Not all trims include this panel, refer to your owner’s manual to confirm whether your specific configuration has one.

This panel, when present, typically manages relays for the power liftgate motor and related rear convenience features.

How to Identify the Right Fuse or Relay

Both the engine bay and interior fuse boxes include a printed diagram, usually located on the inside of the fuse box cover, detailing each fuse and relay by number, amperage rating, and function.

When troubleshooting:

  • Identify the malfunctioning component (e.g., “power liftgate” or “SYNC system”) and match it to its corresponding number on the diagram.
  • Confirm the amperage rating on the old fuse matches the replacement before installing a new one.
  • For relays, use the diagram to confirm the correct slot, since several relays in the box may look nearly identical despite controlling different systems.

If the printed diagram is missing or difficult to read, refer to your owner’s manual for a detailed fuse box diagram specific to your Flex’s trim level, as configurations can vary between base models and higher trims with features like all-wheel drive, panoramic sunroof, or upgraded audio systems.

Safety Precautions Before Checking Fuses or Relays

  • Turn off the ignition and remove the key before touching any fuse or relay.
  • For more involved electrical work, disconnect the negative battery terminal to prevent accidental short circuits.
  • Use the fuse puller tool, often built into the fuse box cover, rather than metal tools like screwdrivers, which can cause sparking.
  • Never replace a fuse with one of a higher amperage rating than specified, as this can overload the circuit and create a fire hazard.
  • If a replacement fuse blows immediately, stop and inspect the circuit for an underlying short rather than continuing to swap fuses.

Checking and Replacing Fuses in Ford Flex

If electrical components in the vehicle are not working, a fuse may have blown. Blown fuses are identified by a broken wire within the fuse. Check the appropriate fuses before replacing any electrical components.


Location of Fuse Boxes

ford flex (2013-2019): passenger compartment fuse panel location

Passenger Compartment Fuse Panel:
The fuse panel is located under the instrument panel to the left of the steering wheel. You may need to remove a trim panel to access it.

ford flex (2013-2019): engine compartment fuse box location

Power Distribution Box:
The power distribution box is located in the engine compartment. It has high-current fuses that protect your vehicle’s main electrical systems from overloads.


Fuse Box Diagrams

2013

Passenger Compartment Fuse Panel
ford flex (2013): passenger compartment fuse panel diagram

List of fuses in the passenger compartment fuse panel (2013)

AProtected components
130ADriver side front window
215AMemory seat, Second row seats
330ANot used (spare)
410ABattery saver relay (interior demand lamps and seat power)
520ASmart amplifier
65ANot used (spare)
77.5APower mirror switch, Driver door module, Driver seat module, Keypad
810APower liftgate
910ASYNC, Electronic finish panei, Radio transceiver module
1010ARun/accessory relay, Front wiper motor relay
1110AIntelligent access module, Heads-up display
1215AInterior lighting, Puddle lamps, Backlighting
1315ARight turn signals
1415ALeft turn signals
1515ACenter high mounted stop lamp, Backup lamp
1610ALow beam headlamps (right)
1710ALow beam headlamps (left)
1810AThird row power seats, Start button run indicator, Keypad illumination, Brake shift interlock, Powertrain control module wake-up, Anti-theft system
1920ANot used (spare)
2020ALocks
2110ANot used (spare)
2220AHorn relay
2315ASteering wheel control module, Instrument cluster
2415ADatalink connector, Steering wheel control module
2515ALiftgate release
265AIgnition switch, Push button start switch
2720AIntelligent access module
2815ANot used (spare)
2920ARadio, Global positioning system module
3015AFront park lamps, Trailer tow relay for park lamps, Front side markers
315ATrailer tow controller
3215ADriver window switch and motor, Power lock switches, Moonroof, 110V AC power point, Interior rearview mirror
3310ANot used (spare)
3410ABlind spot monitor, 2nd row heated seats, Re verse sensing system, Rearview camera
355AHeads-up display, Climate control humidity sensor
3610ANot used (spare)
3710ARefrigerator
3810AFront passenger window switch
3915AHigh beam headlamps
4010ARear park lamps, License plate lamps
417.5AOccupant classification system, Restraints control module
425ANot used (spare)
4310ANot used (spare)
4410ANot used (spare)
455ANot used (spare)
4610AClimate control module
4715AFog lamps, Fog lamp indicator, Front turn signals #2
4830A Circuit BreakerFront passenger power window, Rear power Windows
49Delayed accessory relayBody control module
Power Distribution Box
ford flex (2013): engine compartment fuse box diagram

List of fuses in the power distribution box (2013)

AProtected components
140A**Fan relay 2
240A**Fan relay 1
330A**Trailer brake control module
430A**Wipers, Washer pump
550A**Anti-lock brake system pump
6Not used
730A**Power liftgate
820A**Moonroof
920A**2nd row console power point
103rd row power seats relay
11Heated rear window relay
12Trailer tow battery charge relay
13Starter relay
14Cooling fan #2 relay
15Fuel relay
16Not used
1730A**110V AC power point
1840A**Front blower motor
1930A**Starter motor
2020A**Inside bin power point
2120A**Instrument panei power point / cigar lighter
2230A**3rd row seat module
2330A**Driver power seat, Memory module
2430A**Trailer tow battery charge
25Not used
2640A**Rear window defroster, Heated mirrors
2720A**Cargo power point
2830A**Front heated/cooled seats
2920A**Front heated seats
3020A**Rear heated seats
3125A**Electronic fan relay 3
32Auxiliary blower relay
33Cooling fan #1 relay
34Front blower relay
35Cooling fan (series) relay
36Not used
37Trailer tow right-hand stop/turn lamps relay
38Trailer tow reverse lamps relay
3930A**Auxiliary blower motor
40Not used
41Not used
4230A**Passenger power seat
4320A**Anti-lock brake system valves
44Windshield washer relay
455A*Rain sensor
465A*Canister vent solenoid (EcoBoost engines)
4715A*Washer pump
4810A*Front park lamps
49Not used
5010A*Heated mirrors
515A*Powertrain control module – Injector power monitor (non-EcoBoost engines)
52Not used
53Trailer tow left-hand stop/turn lamps relay
54Not used
55Wipers relay
5630A*Fuel injectors, Fuel pump relay
5720A*Left high-intensity discharge headlamps
5810A*Alternator sensor
5910A*Brake on/off switch
6010A*Trailer tow back-up lamps
61Not used
6210A*A/C clutch
6315A*Trailer tow stop/turn lamps
6415A*Rear wipers
65Not used
66Powertrain control module – vehicle power relay
6720A*Vehicle power #2 – Oxygen sensor heater, Mass airflow sensor, Variable camshaft timing solenoid, Canister vent solenoid, Canister purge solenoid
6820A*Vehicle power #4 (ignition coils)
6920A*Vehicle power #1 (PCM)
7015A*Vehicle power #3 (coil) – A/C clutch relay, Fan control relays, Variable air conditioning compressor, Auxiliary transmission warmup, Turbo charge waste-gate control, Electronic compressor bypass valve (for turbo charger), All-wheel drive module, Positive crackcase ventilation heater
71Not used
72Not used
73Not used
74Not used
75Not used
76Not used
77Trailer tow park lamps relay
7820A*Right high-intensity discharge headlamps
7910A*Adaptive cruise control
80Not used
81Not used
8215A*Rear washer
83Not used
8420A*Trailer tow park lamps
85Not used
865A*Powertrain control module – keep-alive power, Powertrain control module relay, Canister vent solenoid (non-EcoBoost engines)
875A*Run/start
88Run/start relay
8910A*Anti-lock brake system module
9010A*Powertrain control module run/start
9110A*Adaptive cruise control
925A*Front blower relay coil, Power steering module
935A*Auxiliary blower, Rear defroster, Battery charge relays
9430A**Body control module run/start
955A*Front passenger window switch
96Not used
97Not used
98A/C clutch relay
*Mini Fuses
**Cartridge Fuses

2014

Passenger Compartment Fuse Panel
ford flex (2014): passenger compartment fuse panel diagram

List of fuses in the passenger compartment fuse panel (2014)

AProtected components
130ADriver side front window
215AMemory seat, Second row seats
330ANot used (spare)
410ABattery saver relay (interior demand lamps and seat power)
520ASmart amplifier
65ANot used (spare)
77.5APower mirror switch, Driver door module, Driver seat module, Keypad
810APower liftgate
910ASYNC, Electronic finish panei, Radio transceiver module
1010ARun/accessory relay, Front wiper motor relay
1110AIntelligent access module, Heads-up display
1215AInterior lighting, Puddle lamps, Backlighting
1315ARight turn signals
1415ALeft turn signals
1515ACenter high mounted stop lamp, Backup lamp
1610ALow beam headlamps (right)
1710ALow beam headlamps (left)
1810AThird row power seats, Start button run indicator, Keypad illumination, Brake shift interlock, Powertrain control module wake-up, Anti-theft system
1920ANot used (spare)
2020ALocks
2110ANot used (spare)
2220AHorn relay
2315ASteering wheel control module, Instrument cluster
2415ADatalink connector, Steering wheel control module
2515ALiftgate release
265AIgnition switch, Push button start switch
2720AIntelligent access module
2815ANot used (spare)
2920ARadio, Global positioning system module
3015AFront park lamps, Trailer tow relay for park lamps, Front side markers
315ATrailer tow controller
3215ADriver window switch and motor, Power lock switches, Moonroof, 110V AC power point, Interior rearview mirror
3310ANot used (spare)
3410ABlind spot monitor, 2nd row heated seats, Re verse sensing system, Rearview camera
355AHeads-up display, Climate control humidity sensor
3610ANot used (spare)
3710ARefrigerator
3810AFront passenger window switch
3915AHigh beam headlamps
4010ARear park lamps, License plate lamps
417.5AOccupant classification system, Restraints control module
425ANot used (spare)
4310ANot used (spare)
4410ANot used (spare)
455ANot used (spare)
4610AClimate control module
4715AFog lamps, Fog lamp indicator, Front turn signals #2
4830A Circuit BreakerFront passenger power window, Rear power Windows
49Delayed accessory relayBody control module
Power Distribution Box
ford flex (2014): engine compartment fuse box diagram

List of fuses in the power distribution box (2014)

AProtected components
140A**Fan relay 2
240A**Fan relay 1
330A**Trailer brake control module
430A**Wipers, Washer pump
550A**Anti-lock brake system pump
6Not used
730A**Power liftgate
820A**Moonroof
920A**2nd row console power point
103rd row power seats relay
11Heated rear window relay
12Trailer tow battery charge relay
13Starter relay
14Cooling fan #2 relay
15Fuel relay
16Not used
1730A**110V AC power point
1840A**Front blower motor
1930A**Starter motor
2020A**Inside bin power point
2120A**Instrument panei power point / cigar lighter
2230A**3rd row seat module
2330A**Driver power seat, Memory module
2430A**Trailer tow battery charge
25Not used
2640A**Rear window defroster, Heated mirrors
2720A**Cargo power point
2830A**Front heated/cooled seats
2920A**Front heated seats
3020A**Rear heated seats
3125A**Electronic fan relay 3
32Auxiliary blower relay
33Cooling fan #1 relay
34Front blower relay
35Cooling fan (series) relay
36Not used
37Trailer tow right-hand stop/turn lamps relay
38Trailer tow reverse lamps relay
3930A**Auxiliary blower motor
40Not used
41Not used
4230A**Passenger power seat
4320A**Anti-lock brake system valves
44Windshield washer relay
455A*Rain sensor
465A*Canister vent solenoid (EcoBoost engines)
4715A*Washer pump
4810A*Front park lamps
49Not used
5010A*Heated mirrors
515A*Powertrain control module – Injector power monitor (non-EcoBoost engines)
52Not used
53Trailer tow left-hand stop/turn lamps relay
54Not used
55Wipers relay
5630A*Fuel injectors, Fuel pump relay
5720A*Left high-intensity discharge headlamps
5810A*Alternator sensor
5910A*Brake on/off switch
6010A*Trailer tow back-up lamps
61Not used
6210A*A/C clutch
6315A*Trailer tow stop/turn lamps
6415A*Rear wipers
65Not used
66Powertrain control module – vehicle power relay
6720A*Vehicle power #2 – Oxygen sensor heater, Mass airflow sensor, Variable camshaft timing solenoid, Canister vent solenoid, Canister purge solenoid
6820A*Vehicle power #4 (ignition coils)
6920A*Vehicle power #1 (PCM)
7015A*Vehicle power #3 (coil) – A/C clutch relay, Fan control relays, Variable air conditioning compressor, Auxiliary transmission warmup, Turbo charge waste-gate control, Electronic compressor bypass valve (for turbo charger), All-wheel drive module, Positive crackcase ventilation heater
71Not used
72Not used
73Not used
74Not used
75Not used
76Not used
77Trailer tow park lamps relay
7820A*Right high-intensity discharge headlamps
7910A*Adaptive cruise control
80Not used
81Not used
8215A*Rear washer
83Not used
8420A*Trailer tow park lamps
85Not used
865A*Powertrain control module – keep-alive power, Powertrain control module relay, Canister vent solenoid (non-EcoBoost engines)
875A*Run/start
88Run/start relay
8910A*Anti-lock brake system module
9010A*Powertrain control module run/start
9110A*Adaptive cruise control
925A*Front blower relay coil, Power steering module
935A*Auxiliary blower, Rear defroster, Battery charge relays
9430A**Body control module run/start
955A*Front passenger window switch
96Not used
97Not used
98A/C clutch relay
*Mini Fuses
**Cartridge Fuses

2015

Passenger Compartment Fuse Panel
ford flex (2015): passenger compartment fuse panel diagram

List of fuses in the passenger compartment fuse panel (2015)

AProtected components
130ADriver side front window
215AMemory seat, Second row seats
330APassenger side front window
410ABattery saver relay (interior demand lamps and seat power)
520ASmart amplifier
65ANot used (spare)
77.5APower mirror switch, Driver door module, Driver seat module, Keypad
810APower liftgate
910ASYNC, Electronic finish panei, Radio transceiver module
1010ARun/accessory relay, Front wiper motor relay
1110AIntelligent access module, Heads-up display
1215AInterior lighting, Puddle lamps, Backlighting
1315ARight turn signals
1415ALeft turn signals
1515ACenter high mounted stop lamp, Backup lamp
1610ALow beam headlamps (right)
1710ALow beam headlamps (left)
1810AThird row power seats, Start button run indicator, Keypad illumination, Brake shift interlock, Powertrain control module wake-up, Anti-theft system
1920ANot used (spare)
2020ALocks
2110ANot used (spare)
2220AHorn relay
2315ASteering wheel control module, Instrument cluster
2415ADatalink connector, Steering wheel control module
2515ALiftgate release
265AIgnition switch, Push button start switch
2720AIntelligent access module
2815ANot used (spare)
2920ARadio, Global positioning system module
3015AFront park lamps, Trailer tow relay for park lamps, Front side markers
315ATrailer tow controller
3215ADriver window switch and motor, Power lock switches, Moonroof, 110V AC power point, Interior rearview mirror
3310ANot used (spare)
3410ABlind spot monitor, 2nd row heated seats, Reverse sensing system, Rearview camera
355AHeads-up display, Climate control humidity sensor
3610AHeated steering wheel
3710ARefrigerator
3810AFront passenger window switch
3915AHigh beam headlamps
4010ARear park lamps, License plate lamps
417.5AOccupant classification system, Restraints control module
425ANot used (spare)
4310ANot used (spare)
4410ANot used (spare)
455ANot used (spare)
4610AClimate control module
4715AFog lamps, Fog lamp indicator, Front turn signals #2
4830A Circuit BreakerFront passenger power window, Rear power Windows
49Delayed accessory relayBody control module
Power Distribution Box
ford flex (2015): engine compartment fuse box diagram

List of fuses in the power distribution box (2015)

AProtected components
140A**Fan relay 2
240A**Fan relay 1
330A**Trailer brake control module
430A**Wipers, Washer pump
550A**Anti-lock brake system pump
6Not used
730A**Power liftgate
820A**Moonroof
920A**2nd row console power point
103rd row power seats relay
11Heated rear window relay
12Trailer tow battery charge relay
13Starter relay
14Cooling fan #2 relay
15Fuel relay
16Not used
1730A**110V AC power point
1840A**Front blower motor
1930A**Starter motor
2020A**Inside bin power point
2120A**Instmment panei power point / cigar lighter
2230A**3rd row seat module
2330A**Driver power seat, Memory module
2430A**Trailer tow battery charge
25Not used
2640A**Rear window defroster, Heated mirrors
2720A**Cargo power point
2830A**Front heated/cooled seats
2920A**Front heated seats
3020A**Rear heated seats
3125A**Electronic fan relay 3
32Auxiliary blower relay
33Cooling fan #1 relay
34 Front blower relay
35Cooling fan (series) relay
36Not used
37Trailer tow right-hand stop/turn lamps relay
38Trailer tow reverse lamps relay
3930A**Auxiliary blower motor
40Not used
41Not used
4230A**Passenger power seat
4320A**Anti-lock brake system valves
44Windshield washer relay
455A*Rain sensor
465A*Canister vent solenoid (EcoBoost engines)
4715A*Washer pump
4810A*Front park lamps
49Not used
5010A*Heated mirrors
515A*Powertrain control module – Injector power monitor (non-EcoBoost engines)
52Not used
53Trailer tow left-hand stop/turn lamps relay
54Not used
55Wipers relay
5630A*Fuel injectors, Fuel pump relay
5720A*Left high-intensity discharge headlamps
5810A*Alternator sensor
5910A*Brake on/off switch
6010A*Trailer tow back-up lamps
61Not used
6210A*A/C clutch
6315A*Trailer tow stop/turn lamps
6415A*Rear wipers
65Not used
66Powertrain control module – vehicle power relay
6720A*Vehicle power #2 – Oxygen sensor heater, Mass airflow sensor, Variable camshaft timing solenoid, Canister vent solenoid, Canister purge solenoid
6820A*Vehicle power #4 (ignition coils)
6920A*Vehicle power #1 (PCM)
7015A*Vehicle power #3 (coil) – A/C clutch relay, Fan control relays, Variable air conditioning compressor, Auxiliary transmission warmup, Turbo charge waste-gate control, Electronic compressor bypass valve (for turbo charger), All-wheel drive module, Positive crackcase ventilation heater
71Not used
72Not used
73Not used
74Not used
75Not used
76Not used
77 Trailer tow park lamps relay
7820A*Right high-intensity discharge headlamps
7910A*Adaptive cruise control
80Not used
81Not used
8215A*Rear washer
83Not used
8420A*Trailer tow park lamps
85Not used
865A*Powertrain control module – keep-alive power, Powertrain control module relay, Canister vent solenoid (non-EcoBoost engines)
875A*Run/start
88Run/start relay
8910A*Anti-lock brake system module
9010A*Powertrain control module run/start
9110A*Adaptive cruise control
925A*Front blower relay coil, Power steering module
935A*Auxiliary blower, Rear defroster, Battery charge relays
9430A**Body control module run/start
955A*Front passenger window switch
96Not used
97Not used
98A/C clutch relay
*Mini Fuses
**Cartridge Fuses

2016

Passenger Compartment Fuse Panel
ford flex (2016): passenger compartment fuse panel diagram

List of fuses in the passenger compartment fuse panel (2016)

AProtected components
130APassenger side rear window.
215AMemory seat. Second row seats.
330APassenger side front window.
410ADemand lamps battery saver relay.
520AAudio amplifier Active noise control module.
65ANot used (spare).
77.5ADriver seat module logic. Left front door zone module. Keypad.
810APower liftgate.
910ASYNC module. Electronic finish panel. Radio frequency transceiver module.
1010ARun accessory relay. Front wiper motor relay.
1110AIntelligent access module logic. Heads-up display.
1215APuddle lamp. Backlighting LED. Interior lighting.
1315ARight-hand direction indicators.
1415ALeft-hand direction indicators.
1515ACenter high mounted stop lamp. Backup lamp.
1610ARight low beam headlamp.
1710ALeft low beam headlamp.
1810AThird row power seats. Start button. Keypad illumination. Brake-shift interlock. Powertrain control module wake-up. Anti-theft system.
1920ANot used (spare).
2020ALocks.
2110ANot used (spare).
2220AHorn relay.
2315ASteering wheel control module logic. Instrument cluster.
2415ASteering wheel control module. Datalink.
2515ALiftgate release.
265AIgnition switch. Push button ignition switch.
2720AIntelligent access module power.
2815ANot used (spare).
2920ARadio. Global positioning system module.
3015AFront park lamps. Trailer tow relay for park lamps. Front side markers.
315ATrailer tow brake controller.
3215ASmart window motors. Master window and mirror switch. Lockswitch illumination. Moonroof. 110V AC power point. Interior rearview mirror.
3310ANot used (spare).
3410AReverse park aid module. Rear heated seat module. Blind spot monitor module. Rear video camera. Interior mirror.
355AClimate control humidity sensor. Heads-up display.
3510AHeated steering wheel.
3710ARefrigerator.
3810AFront passenger window switch.
3915AHigh beams.
4010ARear park lamps. License plate lamps.
417.5AOccupant classification sensor. Restraint control module.
425ANot used (spare).
4310ANot used (spare).
4410ANot used (spare).
455ANot used (spare).
4610AClimate control module.
4715AFog lamp relay. Front direction indicators.
4830A Circuit breakerFront passenger power window. Rear power Windows.
49RelayDelayed accessory relay. Body control module.
Power Distribution Box
ford flex (2016): engine compartment fuse box diagram

List of fuses in the power distribution box (2016)

AProtected components
140A**Fan relay 2.
240A**Fan relay 1.
330A**Trailer brake control module.
430A**Wipers. Washer pump.
550A**Anti-lock brake system pump.
620A **Center console power point.
730A**Power liftgate.
820A**Moonroof.
920A**Second row console power point.
10RelayThird row power seats relay.
11RelayHeated rear window relay.
12RelayTrai ler tow battery charge relay.
13RelayStarter motor relay.
14RelayCooling fan number 2 relay.
15RelayFuel pump relay.
16Not used.
1730A**11OV AC power point.
1840A**Front blower motor relay.
1930A**Starter relay.
2020A**Storage bin power point.
2120A**Instrument panei power point / cigar lighter.
2230A**Third row seat module.
2330A**Driver power seat. Memory module.
2430A**Trai ler tow battery charge.
25Not used.
2640A**Rear window defroster. Heated mirrors.
2720A**Cargo power point.
2830A**Front climate controlled seats.
2920A**Front heated seats.
3020A**Rear heated seats.
3125A**Electric fan relay 3.
32RelayAuxiliary blower motor relay.
33RelayCooling fan #1 relay.
34RelayFront blower motor relay.
35RelayCooling fan (series) relay.
35Not used.
37RelayTrailer tow right-hand stop/turn lamps relay.
38RelayTrailer tow reverse lamps relay.
3930A**Auxiliary blower motor.
40Not used.
41Not used.
4230A**Passenger power seat.
4320A**Anti-lock brake system valves.
44RelayWindshield washer relay.
455A*Rain sensor.
455A*Canister vent solenoid (EcoBoost engines).
4715A*Washer pump.
4810A*Front park lamps.
49Not used.
5010A*Heated mirrors.
515A*Powertrain control module – Injector power monitor (non-EcoBoost engines).
52Not used.
53RelayTrailer tow left-hand stop/turn lamps relay.
54Not used.
55RelayWiper relay.
5630A*Fuel injectors. Fuel pump relay.
5720A*Left-hand high intensity discharge head-lamp.
5810A*Alternator sensor.
5910A*Brake on/off switch.
6010A*Trailer tow back-up lamps.
61Not used.
6210A*A/C clutch relay.
6315A*Trailer tow stop/turn lamps.
6415A*Rear wipers.
65Not used.
66RelayPowertrain control module – vehicle power relay.
6720A*Vehicle power #2 – oxygen sensor heater. Mass airflow sensor. Variable camshaft timing solenoid valve. Canister vent solenoid. Canister purge solenoid.
6820A*Vehicle power #4 (ignition coils).
6920A*Vehicle power 1 (powertrain control module).
7015A*Vehicle power #3 (coil) – A/C clutch relay. Fan control relay coils 1-3. Variable air conditioning compressor. Auxiliary transmission warmup. Turbo charge waste-gate control. Electronic compressor bypass valve. All-wheel drive module. Positive crankcase ventilation heater.
71Not used.
72Not used.
73Not used.
74Not used.
75Not used.
75Not used.
77RelayTrailer tow park lamps relay.
7820A*Right high-intensity discharge headlamp.
7910A*Adaptive cruise control module.
80Not used.
81Not used.
8215A*Rear washer.
83Not used.
8420A*Trailer tow park lamps.
85Not used.
865A*Powertrain control module. Keep alive power and relay. Powertrain control module relay. Canister vent solenoid (non-EcoBoost engines).
875A*Run/start relay.
88RelayRun/start relay.
8910A*Anti-lock brake system module.
9010A*Powertrain control module run/start.
9110A*Adaptive cruise control module.
925A*Front blower relay coil. Power steering module.
935A*Auxiliary blower motor. Rear window defroster relay. Battery charge relay.
9430A**Body control module run/start.
955A*Front passenger window switch.
96Not used.
97Not used.
98RelayA/C clutch relay.
* Mini Fuses
** Cartridge Fuses

2017

Passenger Compartment Fuse Panel
ford flex (2017): passenger compartment fuse panel diagram

List of fuses in the passenger compartment fuse panel (2017)

AProtected Components
130APassenger side rear window.
215AMemory seat. Second row seats.
330APassenger side front window.
410ADemand lamps battery saver relay.
520AAudio amplifier Active noise control module.
65ANot used (spare).
77.5ADriver seat module logic. Left front door zone module. Keypad.
810APower liftgate.
910ASYNC module. Electronic finish panel. Radio frequency transceiver module.
1010ARun accessory relay. Front wiper motor relay.
1110AIntelligent access module logic. Heads-up display.
1215APuddle lamp. Backlighting LED. Interior lighting.
1315ARight-hand direction indicators.
1415ALeft-hand direction indicators.
1515ACenter high mounted stop lamp. Backup lamp.
1610ARight low beam headlamp.
1710ALeft low beam headlamp.
1810AThird row power seats. Start button. Keypad illumination. Brake-shift interlock. Powertrain control module wake-up. Anti-theft system.
1920ANot used (spare).
2020ALocks.
2110AExtended power module.
2220AHorn relay.
2315ASteering wheel control module logic. Instrument cluster.
2415ASteering wheel control module. Datalink.
2515ALiftgate release.
265AIgnition switch. Push button ignition switch.
2720AIntelligent access module power.
2815ANot used (spare).
2920ARadio. Global positioning system module.
3015AFront park lamps. Trailer tow relay for park lamps. Front side markers.
315ATrailer tow brake controller.
3215ASmart window motors. Master window and mirror switch. Lock switch illumination. Moonroof. 110V AC power point. Interior rearview mirror.
3310ANot used (spare).
3410AReverse park aid module. Rear heated seat module. Blind spot monitor module. Rear video camera. Interior mirror.
355AClimate control humidity sensor. Heads-up display.
3510AHeated steering wheel.
3710ARefrigerator.
3810AFront passenger window switch.
3915AHigh beams.
4010ARear park lamps. License plate lamps.
417.5AExtended power module.
425ANot used (spare).
4310ANot used (spare).
4410ANot used (spare).
455ANot used (spare).
4610AClimate control module.
4715AFog lamp relay power. Front direction indicators.
4830A Circuit breakerFront passenger power window. Rear power Windows.
49RelayDelayed accessory relay. Body control module.
Power Distribution Box
ford flex (2017): engine compartment fuse box diagram

List of fuses in the power distribution box (2017)

AProtected Components
140A1Fan relay 2.
240A1Fan relay 1.
330A1Trailer brake control module.
430A1Wipers. Washer pump.
550A1Anti-lock brake system pump.
620A1Center console power point.
730A1Power liftgate.
820A1Moonroof.
920A1Second row console power point.
10RelayThird row power seats relay.
11RelayHeated rear window relay.
12RelayTrai ler tow battery charge relay.
13RelayStarter motor relay.
14RelayCooling fan number 2 relay.
15RelayFuel pump relay.
16Not used.
1730A1110V AC power point.
1840A1Front blower motor relay.
1930A1Starter relay.
2020A1Storage bin power point.
2120A1Instrument panei power point / cigar lighter.
2230A1Third row seat module.
2330A1Driver power seat. Memory module.
2430A1Trai ler tow battery charge.
25Not used.
2640A1Rear window defroster. Heated mirrors.
2720A1Cargo power point.
2830A1Front climate controlled seats.
2920A1Front heated seats.
3020A1Rear heated seats.
3125A1Electric fan relay 3.
32RelayAuxiliary blower motor relay.
33RelayCooling fan #1 relay.
34RelayFront blower motor relay.
35RelayCooling fan (series) relay.
35Not used.
37RelayTrailer tow right-hand stop/turn lamps relay.
38RelayTrailer tow reverse lamps relay.
3930A1Auxiliary blower motor.
40Not used.
41Not used.
4230A1Passenger power seat.
4320A1Anti-lock brake system valves.
44RelayWindshield washer relay.
455A2Rain sensor.
465A2Canister vent solenoid (EcoBoost engines).
4715A2Washer pump.
4810A2Front park lamps.
49Not used.
5010A2Heated mirrors.
515A2Powertrain control module – Injector power monitor (non-EcoBoost engines).
52Not used.
53RelayTrailer tow left-hand stop/turn lamps relay.
54Not used.
55RelayWiper relay.
5630A2Fuel injectors. Fuel pump relay.
5720A2Left-hand high intensity discharge head-lamp.
5810A2Alternator sensor.
5910A2Brake on/off switch.
6010A2Trailer tow back-up lamps.
61Not used.
6210A2A/C clutch relay.
6315A2Trailer tow stop/turn lamps.
6415A2Rear wipers.
65Not used.
66RelayPowertrain control module – vehicle power relay.
6720A2Vehicle power #2 – oxygen sensor heater. Mass airflow sensor. Variable camshaft timing solenoid valve. Canister vent solenoid. Canister purge solenoid.
6820A2Vehicle power #4 (ignition coils).
6920A2Vehicle power 1 (powertrain control module).
7015A2Vehicle power #3 (coil) – A/C clutch relay. Fan control relay coils 1-3. Variable air conditioning compressor. Auxiliary transmission warmup. Turbo charge waste-gate control. Electronic compressor bypass valve. All-wheel drive module. Positive crankcase ventilation heater.
71Not used.
72Not used.
73Not used.
74Not used.
75Not used.
76Not used.
77RelayTrailer tow park lamps relay.
7820A2Right high-intensity discharge headlamp.
7910A2Adaptive cruise control module.
80Not used.
81Not used.
8215A2Rear washer.
83Not used.
8420A2Trailer tow park lamps.
85Not used.
865A2Powertrain control module. Keep alive power and relay. Powertrain control module relay. Canister vent solenoid (non-EcoBoost engines).
875A2Run/start relay.
88RelayRun/start relay.
8910A2Anti-lock brake system module.
9010A2Powertrain control module run/start.
9110A2Adaptive cruise control module.
925A2Front blower relay coil. Power steering module.
935A2Auxiliary blower motor. Rear window defroster relay power. Battery charge relay.
9430A1Body control module run/start.
955A2Front passenger window switch.
96Not used.
97Not used.
98RelayA/C clutch relay.
1 J Case Low Profile fuse.
2 Mini fuse.

2018

Passenger Compartment Fuse Panel
ford flex (2018): passenger compartment fuse panel diagram

List of fuses in the passenger compartment fuse panel (2018)

AProtected Components
130ADriver front power window.
215AMemory seat. Second row seats.
330APassenger side front window.
410ADemand lamps battery saver relay.
520AAudio amplifier Active noise control module.
65ANot used (spare).
77.5ADriver seat module logic. Left front door zone module. Keypad.
810APower liftgate.
910ASYNC module. Electronic finish panel. Radio frequency transceiver module.
1010ARun accessory relay. Front wiper motor relay.
1110AIntelligent access module logic. Heads-up display.
1215APuddle lamp. Backlighting LED. Interior lighting.
1315ARight-hand direction indicators.
1415ALeft-hand direction indicators.
1515ACenter high mounted stop lamp. Backup lamp.
1510ARight low beam headlamp.
1710ALeft low beam headlamp.
1810AThird row power seats. Start button. Keypad illumination. Brake-shift interlock. Powertrain control module wake-up. Anti-theft system.
1920ANot used (spare).
2020ALocks.
2110AExtended power module.
2220AHorn relay.
2315ASteering wheel control module logic. Instrument cluster.
2415ASteering wheel control module. Datalink.
2515ALiftgate release.
265AIgnition switch. Push button ignition switch.
2720AIntelligent access module power.
2815ANot used (spare).
2920ARadio. Global positioning system module.
3015AFront park lamps. Trailer tow relay for park lamps. Front side markers.
315ATrailer tow brake controller.
3215ASmart window motors. Master window and mirror switch. Lock switch illumination. Moonroof. 110V AC power point. Interior rearview mirror.
3310ANot used (spare).
3410AReverse park aid module. Rear heated seat module. Blind spot monitor module. Rear video camera. Interior mirror.
355AClimate control humidity sensor. Heads-up display.
3610AHeated steering wheel.
3710ARefrigerator.
3810AFront passenger window switch.
3915AHigh beams.
4010ARear park lamps. License plate lamps.
417.5AExtended power module.
425ANot used (spare).
4310ANot used (spare).
4410ANot used (spare).
455ANot used (spare).
4610AClimate control module.
4715AFog lamp relay power. Front direction indicators.
4830A Circuit breakerFront passenger power window. Rear power Windows.
49RelayDelayed accessory relay. Body control module.
Power Distribution Box
ford flex (2018): engine compartment fuse box diagram

List of fuses in the power distribution box (2018)

AProtected Components
140A1Fan relay 2.
240A1Fan relay 1.
330A1Trailer brake control module.
430A1Wipers. Washer pump.
550A1Anti-lock brake system pump.
620A1Center console power point (without rear park aid).
730A1Power liftgate.
820A1Moonroof.
920A1Second row console power point.
10RelayThird row power seats relay.
11RelayHeated rear window relay.
12RelayTrailer tow battery charge relay.
13RelayStarter motor relay.
14RelayCooling fan number 2 relay.
15RelayFuel pump relay.
15Not used.
1730A1110V AC power point.
1840A1Front blower motor relay.
1930A1Starter relay.
2020A1Storage bin power point.
2120A1Instrument panei power point / cigar lighter.
2230A1Third row seat module.
2330A1Driver power seat. Memory module.
2430A1Trailer tow battery charge.
25Not used.
2640A1Rear window defroster. Heated mirrors.
2720A1Cargo power point.
2830A1Front heated and cooled seats.
2920A1Front heated seats (without cooled seats).
3020A1Rear heated seats.
3125A1Electric fan relay 3.
32RelayAuxiliary blower motor relay.
33RelayCooling fan #1 relay.
34RelayFront blower motor relay.
35RelayCooling fan (series) relay.
36Not used.
37RelayTrailer tow right-hand stop/turn lamps relay.
38RelayTrailer tow reverse lamps relay.
3930A1Auxiliary blower motor.
40Not used.
41Not used.
4230A1Passenger power seat.
4320A1Anti-lock brake system valves.
44RelayWindshield washer relay.
455A2Rain sensor.
465A2Canister vent solenoid (EcoBoostengines).
4715A2Washer pump.
4810A2Front park lamps.
49Not used.
5010A2Heated mirrors.
51Not used.
52Not used.
53RelayTrailer tow left-hand stop/turn lamps relay.
54Not used.
55RelayWiper relay.
5630A2Fuel injectors. Fuel pump relay.
5720A2Left-hand high intensity discharge head-lamp.
5810A2Alternator sensor.
5910A2Brake on/off switch.
6010A2Trailer tow back-up lamps.
61Not used.
6210A2A/C clutch relay.
6315A2Trailer tow stop/turn lamps.
6415A2Rear wipers.
65Not used.
66RelayPowertrain control module – vehicle power relay.
6720A2Vehicle power #2 – oxygen sensor heater. Mass airflow sensor. Variable camshaft timing solenoid valve. Canister vent solenoid. Canister purge solenoid.
6820A2Vehicle power #4 (ignition coils).
6920A2Vehicle power 1 (powertrain control module).
7015A2Vehicle power #3 (coil) – A/C clutch relay. Fan control relay coils 1-3. Variable air conditioning compressor. Auxiliary transmission warmup. Turbo charge waste-gate control. Electronic compressor bypass valve. All-wheel drive module. Positive crankcase ventilation heater.
71Not used.
72Not used.
73Not used.
74Not used.
75Not used.
76Not used.
77RelayTrai ler tow park lamps relay.
7820A2Right high-intensity discharge headlamp.
79Not used.
80Not used.
81Not used.
8215A2Rear washer.
83Not used.
8420A2Trailer tow park lamps.
85Not used.
865A2Powertrain control module. Keep alive power and relay. Powertrain control module relay. Canister vent solenoid (non-EcoBoost engines).
875A2Run/start relay.
88RelayRun/start relay.
8910A2Anti-lock brake system module.
9010A2Powertrain control module run/start.
9110A2Adaptive cruise control module.
925A2Front blower relay coil. Power steering module.
935A2Auxiliary blower motor. Rear window defroster relay power. Battery charge relay.
9430A1Body control module run/start.
955A2Front passenger window switch.
96Not used.
97Not used.
98RelayA/C clutch relay.
1 J Case Low Profile fuse.
2 Mini fuse.

2019

Passenger Compartment Fuse Panel
ford flex (2019): passenger compartment fuse panel diagram

List of fuses in the passenger compartment fuse panel (2019)

AProtected Components
130ADriver front power window.
215AMemory seat. Second row seats.
330APassenger side front window.
410ADemand lamps battery saver relay.
520AAudio amplifier Active noise control module.
65ANot used (spare).
77.5ADriver seat module logic. Left front door zone module. Keypad.
810APower liftgate.
910ASYNC module. Electronic finish panel. Radio frequency transceiver module.
1010ARun accessory relay. Front wiper motor relay.
1110AIntelligent access module logic. Heads-up display.
1215APuddle lamp. Backlighting LED. Interior lighting.
1315ARight-hand direction indicators.
1415ALeft-hand direction indicators.
1515ACenter high mounted stop lamp. Backup lamp.
1510ARight low beam headlamp.
1710ALeft low beam headlamp.
1810AThird row power seats. Start button. Keypad illumination. Brake-shift interlock. Powertrain control module wake-up. Anti-theft system.
1920ANot used (spare).
2020ALocks.
2110AExtended power module.
2220AHorn relay.
2315ASteering wheel control module logic. Instrument cluster.
2415ASteering wheel control module. Datalink.
2515ALiftgate release.
265AIgnition switch. Push button ignition switch.
2720AIntelligent access module power.
2815ANot used (spare).
2920ARadio. Global positioning system module.
3015AFront park lamps. Trailer tow relay for park lamps. Front side markers.
315ATrailer tow brake controller.
3215ASmart window motors. Master window and mirror switch. Lock switch illumination. Moonroof. 110V AC power point. Interior rearview mirror.
3310ANot used (spare).
3410AReverse park aid module. Rear heated seat module. Blind spot monitor module. Rear video camera. Interior mirror.
355AClimate control humidity sensor. Heads-up display.
3610AHeated steering wheel.
3710ARefrigerator.
3810AFront passenger window switch.
3915AHigh beams.
4010ARear park lamps. License plate lamps.
417.5AExtended power module.
425ANot used (spare).
4310ANot used (spare).
4410ANot used (spare).
455ANot used (spare).
4610AClimate control module.
4715AFog lamp relay power. Front direction indicators.
4830A Circuit breakerFront passenger power window. Rear power Windows.
49RelayDelayed accessory relay. Body control module.
Power Distribution Box
ford flex (2019): engine compartment fuse box diagram

List of fuses in the power distribution box (2019)

AProtected Components
140A1Fan relay 2.
240A1Fan relay 1.
330A1Trailer brake control module.
430A1Wipers. Washer pump.
550A1Anti-lock brake system pump.
620A1Center console power point (without rear park aid).
730A1Power liftgate.
820A1Moonroof.
920A1Second row console power point.
10RelayThird row power seats relay.
11RelayHeated rear window relay.
12RelayTrai ler tow battery charge relay.
13RelayStarter motor relay.
14RelayCooling fan number 2 relay.
15RelayFuel pump relay.
15Not used.
1730A1110V AC power point.
1840A1Front blower motor relay.
1930A1Starter relay.
2020A1Storage bin power point.
2120A1Instrument panel power point / cigar lighter.
2230A1Third row seat module.
2330A1Driver power seat. Memory module.
2430A1Trai ler tow battery charge.
25Not used.
2640A1Rear window defroster. Heated mirrors.
2720A1Cargo power point.
2830A1Front heated and cooled seats.
2920A1Front heated seats (without cooled seats).
3020A1Rear heated seats.
3125A1Electric fan relay 3.
32RelayAuxiliary blower motor relay.
33RelayCooling fan #1 relay.
34RelayFront blower motor relay.
35RelayCooling fan (series) relay.
36Not used.
37RelayTrailer tow right-hand stop/turn lamps relay.
38RelayTrailer tow reverse lamps relay.
3930A1Auxiliary blower motor.
40Not used.
41Not used.
4230A1Passenger power seat.
4320A1Anti-lock brake system valves.
44RelayWindshield washer relay.
455A2Rain sensor.
465A2Canister vent solenoid (EcoBoost engines).
4715A2Washer pump.
4810A2Front park lamps.
49Not used.
5010A2Heated mirrors.
51Not used.
52Not used.
53RelayTrailer tow left-hand stop/turn lamps relay.
54Not used.
55RelayWiper relay.
5630A2Fuel injectors. Fuel pump relay.
5720A2Left-hand high intensity discharge head-lamp.
5810A2Alternator sensor.
5910A2Brake on/off switch.
6010A2Trailer tow back-up lamps.
61Not used.
6210A2A/C clutch relay.
6315A2Trailer tow stop/turn lamps.
6415A2Rear wipers.
65Not used.
66RelayPowertrain control module – vehicle power relay.
6720A2Vehicle power #2 – oxygen sensor heater. Mass airflow sensor. Variable camshaft timing solenoid valve. Canister vent solenoid. Canister purge solenoid.
6820A2Vehicle power #4 (ignition coils).
6920A2Vehicle power 1 (powertrain control module).
7015A2Vehicle power #3 (coil) – A/C clutch relay. Fan control relay coils 1-3. Variable air conditioning compressor. Auxiliary transmission warmup. Turbo charge waste-gate control. Electronic compressor bypass valve. All-wheel drive module. Positive crankcase ventilation heater.
71Not used.
72Not used.
73Not used.
74Not used.
75Not used.
76Not used.
77RelayTrailer tow park lamps relay.
7820A2Right high-intensity discharge headlamp.
79Not used.
80Not used.
81Not used.
8215A2Rear washer.
83Not used.
8420A2Trailer tow park lamps.
85Not used.
865A2Powertrain control module. Keep alive power and relay. Powertrain control module relay. Canister vent solenoid (non-EcoBoost engines).
875A2Run/start relay.
88RelayRun/start relay.
8910A2Anti-lock brake system module.
9010A2Powertrain control module run/start.
9110A2Adaptive cruise control module.
925A2Front blower relay coil. Power steering module.
935A2Auxiliary blower motor. Rear window defroster relay power. Battery charge relay.
9430A1Body control module run/start.
955A2Front passenger window switch.
96Not used.
97Not used.
98RelayA/C clutch relay.
1 J Case Low Profile fuse.
2 Mini fuse.

Conclusion

Knowing the fuse box and relay locations on your 2013–2019 Ford Flex makes it much easier to handle minor electrical issues without unnecessary guesswork. With two main fuse box locations; one under the hood and one inside the cabin, plus a possible auxiliary relay panel in the rear cargo area for certain trims, this crossover remains fairly simple to troubleshoot once you’re familiar with its layout.

Always handle fuses and relays with care, confirm amperage ratings before replacing any component, and use the printed diagram to correctly identify each fuse or relay. If an electrical issue persists after replacing a fuse, or if you’re unsure about diagnosing the problem yourself, consulting a qualified mechanic or Ford dealership technician is the safest way to avoid further electrical complications.

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