Learn about Ford Flex (2009-2012) fuse box and relay’s locations, functions, and maintenance tips for optimal vehicle electrical system.
The Ford Flex is a distinctive crossover SUV known for its boxy styling, spacious three-row interior, and array of tech-forward features for its era. Behind these conveniences lies an electrical system protected by fuses and relays, which safeguard your vehicle’s wiring from power surges and short circuits that could otherwise cause serious damage.
If you’re dealing with a malfunctioning power liftgate, dead interior lights, or a radio that suddenly stopped working, a blown fuse or faulty relay is often to blame. Knowing exactly where your Flex’s fuse boxes and relays are located can help you quickly diagnose these issues without an unnecessary trip to the mechanic.
This guide covers the fuse box and relay locations for the 2009–2012 Ford Flex, along with safe access methods and practical tips for identifying the correct fuse or relay.
MUST READ: DYI – How to Check Car Fuses?
(2009-2012) 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 (2009-2012) fuse assignment
Ford Flex Year of production: 2009, 2010, 2011, 2012
Where Are the Fuse Boxes Located on the Ford Flex?
The 2009–2012 Ford Flex is equipped with 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.
- Unclip or unscrew the retaining tabs securing the cover, depending on your trim level.
- 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 properly 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 radio and infotainment system, power windows, power seats, dashboard lights, wipers, and central locking system.
3. Rear Cargo Area Auxiliary Relay Panel (If Equipped)
Because the Flex offers features like a power liftgate, second-row power fold seats, and available rear entertainment systems, 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 “radio”) 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
Passenger Compartment Fuse Panel:
The fuse panel is located under the instrument panel to the left of the steering wheel.
Power Distribution Box:
The power distribution box is located in the engine compartment. The power distribution box contains high-current fuses that protect your vehicle’s main electrical systems from overloads.
Auxiliary Relay Box (If Equipped):
The relay box is located in the engine compartment next to the power distribution box.
Fuse Box Diagrams
2009
Passenger Compartment Fuse Panel
List of fuses in the passenger compartment fuse panel (2009)
| № | A | Protected Circuits |
|---|---|---|
| 1 | 30A | Driver smart window motor |
| 2 | 15A | Not used (spare) |
| 3 | 15A | Family entertainment system (FES) |
| 4 | 30A | DC/AC inverter |
| 5 | 10A | Passenger compartment fuse panel logic power, Keypad illumination, BTSI |
| 6 | 20A | Turn signals |
| 7 | 10A | Low beam headlamps (left) |
| 8 | 10A | Low beam headlamps (right) |
| 9 | 15A | Interior lights, Cargo lamps |
| 10 | 15A | Backlighting, Puddle lamps |
| 11 | 10A | All wheel drive |
| 12 | 7.5A | Not used (spare) |
| 13 | 5A | Keypad, Mirror switch, Memory module, DSM logic, Adjustable pedais |
| 14 | 10A | Power liftgate module, CID, MGM |
| 15 | 10A | Climate control head |
| 16 | 15A | EFP, Navigation Screen |
| 17 | 20A | All power lock motor feeds, Liftgate release |
| 18 | 20A | 2nd row power seat, Front heated seats |
| 19 | 25A | Moon roof |
| 20 | 15A | OBDII cormector, Memory seat |
| 21 | 15A | Fog lamps |
| 22 | 15A | Park lamps, License lamps |
| 23 | 15A | High beam headlamps |
| 24 | 20A | Horn relay |
| 25 | 10A | Demand lamps/Interior lamps, Power fold seat (2nd row) |
| 26 | 10A | Instrument panel cluster |
| 27 | 20A | Ignition Switch |
| 28 | 5A | Radio, Radio start signal |
| 29 | 5A | Instrument panel cluster |
| 30 | 5A | Overdrive cancel and grade assist switch |
| 31 | 10A | Not used (spare) |
| 32 | 10A | Restraint control module |
| 33 | 10A | Battery charge relay |
| 34 | 5A | Yaw rate sensor, ABS R/S, Refrigerator relay coil |
| 35 | 10A | Steering rotation sensor, Rear park assist, Heated seat modules, AWD, DC/AC inverter |
| 36 | 5A | PATS module |
| 37 | 10A | Not used (spare) |
| 38 | 20A | Not used (spare) |
| 39 | 20A | Radio |
| 40 | 20A | Second row heated seats |
| 41 | 15A | Switch illumination, EC mirror, Moon roof, Front lock switches, Radio |
| 42 | 10A | Not used (spare) |
| 43 | 10A | Aux relay, Heated back light relay, rear wiper |
| 44 | 10A | Not used (spare) |
| 45 | 5A | Relay coils: PDB, Front and rear wipers, Front blower motor |
| 46 | 7.5A | Occupant Classification Sensor (OCS), Passenger Airbag Deactivation Indicator (PADI) |
| 47 | 30A Circuit Breaker | Power Windows |
| 48 | Full ISO relay | Delayed accessory relay |
Power Distribution Box
List of fuses in the power distribution box (2009)
| № | A | Protected Circuits |
|---|---|---|
| 1 | 80A* | Passenger compartment fuse panel power |
| 2 | 80A* | Passenger compartment fuse panel power |
| 3 | – | Not used |
| 4 | 30A* | Front wipers |
| 5 | 30A* | Passenger power seat |
| 6 | 20A* | Power point (instrument panel) |
| 7 | 30A* | Amp |
| 8 | – | Not used |
| 9 | 40A* | Anti-lock Brake System (ABS)/AdvanceTrac pump |
| 10 | 30A* | Starter |
| 11 | 30A* | Powertrain Control Module (PCM) relay |
| 12 | 20A* | ABS/AdvanceTrac valve |
| 13 | 20A** | Left HID |
| 14 | 10A** | Brake on/off (BOO) switch |
| 15 | 15A** | Refrigerator |
| 16 | 20A** | Right HID |
| 17 | 10A** | Alternator |
| 18 | 20A* | Rear quarter panel power point |
| 19 | 20A* | Power point (front console) |
| 20 | 40A* | Rear defroster |
| 21 | 20A* | Rear console power point |
| 22 | 20A* | Sub woofer amp |
| 23 | 7.5A** | PCM Keep alive power, Canister vent |
| 24 | 10A** | A/C clutch relay |
| 25 | 25A** | Rear wiper |
| 26 | 20A** | Backup relay |
| 27 | 15A** | Fuel relay (Fuel pump driver module, Fuel pump) |
| 28 | 80A* | Cooling fan |
| 29 | 30A* | E-brake (trailer tow) |
| 30 | 40A* | Battery charge (trailer tow) |
| 31 | 30A* | Auxiliary blower relay |
| 32 | 30A* | Driver seat motors, Memory module |
| 33 | – | Not used |
| 34 | 30A* | Power liftgate |
| 35 | 40A* | Front A/C blower motor |
| 36 | 10A** | Back up lamps |
| 37 | 10A** | PCM run/start |
| 38 | 5A** | Illumination delayed accessory |
| 39 | Diode | Fuel diode |
| 40 | Diode | OTIS diode |
| 41 | G8VA relay | A/C clutch |
| 42 | G8VA relay | Fuel pump |
| 43 | G8VA relay | Backup |
| 44 | G8VA relay | Refrigerator |
| 45 | – | Not used |
| 46 | 15A** | VPWR2, VPWR3 |
| 47 | 15A** | PCM VPWR1 |
| 48 | 15A** | PCM VPWR4 |
| 49 | 10A** | Heated mirrors |
| 50 | Full ISO relay | PCM relay |
| 51 | Full ISO relay | Blower motor relay |
| 52 | Full ISO relay | Starter relay |
| 53 | Full ISO relay | Rear defrost relay |
| 54 | Full ISO relay | Auxiliary blower motor relay |
| 55 | Full ISO relay | Front wiper relay |
| 56 | – | Not used |
| 57 | Full ISO relay | Rear wiper relay |
| 58 | High current | Battery charge relay (trailer tow) |
| * Cartridge Fuses ** Mini Fuses | ||
Auxiliary Relay Box (if equipped)
List of fuses in the auxiliary relay box (2009)
| № | A | Description |
|---|---|---|
| 1 | 10A | Trailer tow backup lamp |
| 2 | 15A | Trailer tow stop/turn lamps |
| 3 | – | Not used |
| 4 | – | Not used |
| 5 | – | Not used |
| 6 | – | Not used |
| 7 | – | Not used |
| 8 | – | Not used |
| 9 | – | Not used |
| 10 | – | Not used |
| 11 | – | Not used |
| 12 | 20A | Trailer tow park lamps |
| 13 | Micro ISO | Trailer tow left turn |
| 14 | Micro ISO | Trailer tow right tum |
| 15 | – | Not used |
| 16 | Micro ISO | Trailer tow park lamp |
2010
Passenger Compartment Fuse Panel
List of fuses in the passenger compartment fuse panel (2010)
| № | A | Protected Circuits |
|---|---|---|
| 1 | 30A | Driver smart window motor |
| 2 | 15A | Trailer tow stop/turn lamps |
| 3 | 15A | Not used (spare) |
| 4 | 30A | DC/AC inverter |
| 5 | 10A | Keypad illumination, Brake transmission shift interlock |
| 6 | 20A | Turn signals |
| 7 | 10A | Low beam headlamps (left) |
| 8 | 10A | Low beam headlamps (right) |
| 9 | 15A | Interior lights, Cargo lamps |
| 10 | 15A | Backlighting, Puddle lamps |
| 11 | 10A | All wheel drive (AWD) |
| 12 | 7.5A | Not used (spare) |
| 13 | 5A | Keypad, Mirror switch, Memory module, DSM logic, Adjustable pedais |
| 14 | 10A | Power liftgate module, Center information display, SYNC, GPS module, DVD |
| 15 | 10A | Climate control head |
| 16 | 15A | Electronic finish panel, Navigation screen |
| 17 | 20A | All power lock motor feeds, Liftgate release |
| 18 | 20A | 2nd row power fold seats, Heated seats |
| 19 | 25A | Moon roof |
| 20 | 15A | Data link connector, Memory seat |
| 21 | 15A | Fog lamps, Fog lamp indicator |
| 22 | 15A | Park lamps |
| 23 | 15A | High beam headlamps |
| 24 | 20A | Horn |
| 25 | 10A | Demand lamps/Interior lamps, Power fold seats |
| 26 | 10A | Instrument panel cluster |
| 27 | 20A | Ignition Switch |
| 28 | 5A | Radio/navigation |
| 29 | 5A | Instrument panel cluster |
| 30 | 5A | Transmission shifter |
| 31 | 10A | Not used (spare) |
| 32 | 10A | Restraint control module |
| 33 | 10A | Not used (spare) |
| 34 | 5A | Roll stability control, Refrigerator relay coil |
| 35 | 10A | Steering angle sensor, Rear park assist, Active park assist, Heated seat, AWD, DC/AC inverter, Rearview camera |
| 36 | 5A | Passive anti-theft system module |
| 37 | 10A | Not used (spare) |
| 38 | 20A | Trailer tow park lamps |
| 39 | 20A | Radio/navigation |
| 40 | 20A | Rear heated seats |
| 41 | 15A | Switch illumination, Auto dimming mirror, Moon roof, Mood lighting |
| 42 | 10A | Not used (spare) |
| 43 | 10A | Auxiliary climate control relay, Rear window defroster relay, Rear wiper |
| 44 | 10A | Not used (spare) |
| 45 | 5A | Wiper relay, climate control relay |
| 46 | 7.5A | Occupant classification sensor (OCS), Passenger airbag deactivation indicator (PADI) |
| 47 | 30A Circuit Breaker | Power Windows |
| 48 | Full ISO relay | Delayed accessory relay |
Power Distribution Box
List of fuses in the power distribution box (2010)
| № | A | Protected Circuits |
|---|---|---|
| 1 | 80A* | Passenger compartment fuse panel power |
| 2 | 80A* | Passenger compartment fuse panel power |
| 3 | 30A* | Trailer tow brake controller |
| 4 | 30A* | Front wipers |
| 5 | 30A* | Passenger power seat |
| 6 | 20A* | Power point (instrument panel) |
| 7 | 30A* | Amplifier |
| 8 | – | Not used |
| 9 | 40A* | Anti-lock brake system (ABS) pump |
| 10 | 30A* | Starter relay |
| 11 | 30A* | Powertrain control module (PCM) relay |
| 12 | 20A* | ABS valve |
| 13 | 20A** | Left high intensity discharge (HID) headlamp |
| 14 | 10A** | Brake on/off (BOO) switch |
| 15 | 25A** | Rear wiper |
| 16 | 20A** | Right HID headlamp |
| 17 | 10A** | Alternator sensor |
| 18 | 20A* | Rear power point |
| 19 | 20A* | Console power point |
| 20 | 40A* | Rear defroster |
| 21 | 20A* | Console power point (rear of front console) |
| 22 | 20A* | Subwoofer amplifier |
| 23 | 10A** | PCM keep alive power, Canister vent |
| 24 | 10A** | A/C clutch |
| 25 | 15A** | Refrigerator |
| 26 | 20A** | Backup relay |
| 27 | 15A** | Fuel relay (Fuel pump driver module, Fuel pump) |
| 28 | 80A* | Cooling fan |
| 29 | – | Not used |
| 30 | 30A* | Battery charge (trailer tow) |
| 31 | 40A* | Auxiliary blower motor |
| 32 | 30A* | Driver seat motor |
| 33 | – | Not used |
| 34 | 30A* | Power liftgate |
| 35 | 40A* | Front A/C blower |
| 36 | 10A** | Backup lamps |
| 37 | 10A** | PCM run/start |
| 38 | 10A** | Trailer tow backup lamps |
| 39 | Diode | Fuel diode |
| 40 | Diode | One touch integrated start diode |
| 41 | G8VA relay | Trailer tow park lamp |
| 42 | G8VA relay | Trailer tow stop/turn lamp (left) |
| 43 | G8VA relay | Trailer tow stop/turn lamp (right) |
| 44 | G8VA relay | Backup lamps relay |
| 45 | – | Not used |
| 46 | 15A** | Vehicle power 2, Vehicle power 3 |
| 47 | 20A** | Vehicle power 1 – PCM power |
| 48 | 15A** | Vehicle power – coils on plugs |
| 49 | 10A** | Heated mirrors |
| 50 | HC micro relay | Blower motor |
| 51 | HC micro relay | Rear wiper |
| 52 | HC micro relay | Starter |
| 53 | – | Not used |
| 54 | – | Not used |
| 55 | HC micro relay | Front wiper relay |
| 56 | HC micro relay | Rear window defroster |
| 57 | – | Not used |
| 58 | – | Not used |
| 59 | HC micro relay | Auxiliary blower motor |
| 60 | HC micro relay | Trailer tow battery charge |
| 61 | – | Not used |
| 62 | G8VA relay | Refrigerator |
| 63 | – | Not used |
| 64 | HC micro relay | PCM |
| 65 | G8VA relay | A/C clutch |
| 66 | G8VA relay | Fuel pump |
| * Cartridge Fuses ** Mini Fuses | ||
2011
Passenger Compartment Fuse Panel
List of fuses in the passenger compartment fuse panel (2011)
| № | A | Protected Circuits |
|---|---|---|
| 1 | 30A | Driver smart window motor |
| 2 | 15A | Trailer tow (TT) stop/turn lamps |
| 3 | 15A | Not used (spare) |
| 4 | 30A | DC/AC inverter |
| 5 | 10A | Keypad illumination, Brake transmission shift interlock |
| 6 | 20A | Turn signals |
| 7 | 10A | Low beam headlamps (left) |
| 8 | 10A | Low beam headlamps (right) |
| 9 | 15A | Interior lights, Cargo lamps |
| 10 | 15A | Backlighting, Puddle lamps |
| 11 | 10A | All wheel drive (AWD) |
| 12 | 7.5A | Not used (spare) |
| 13 | 5A | Keypad, Mirror switch, Memory module, DSM logic, Adjustable pedals |
| 14 | 10A | Power liftgate module, Center information display, SYNC, Global positioning system (GPS) module, DVD |
| 15 | 10A | Climate control head |
| 16 | 15A | Electronic finish panel, Navigation screen |
| 17 | 20A | All power lock motor feeds, Liftgate release |
| 18 | 20A | 2nd row power fold seats, Heated seats |
| 19 | 25A | Moon roof |
| 20 | 15A | Data link connector, Memory seat |
| 21 | 15A | Fog lamps, Fog lamp indicator |
| 22 | 15A | Park lamps |
| 23 | 15A | High beam headlamps |
| 24 | 20A | Horn |
| 25 | 10A | Demand lamps/Interior lamps, Power fold seats |
| 26 | 10A | Instmment panel cluster |
| 27 | 20A | Ignition Switch |
| 28 | 5A | Radio/navigation |
| 29 | 5A | Instmment panel cluster |
| 30 | 5A | Transmission shifter |
| 31 | 10A | Not used (spare) |
| 32 | 10A | Restraint control module |
| 33 | 10A | TT battery charge relay coil |
| 34 | 5A | Roll stability control, Refrigerator relay coil, Electric power assist steering |
| 35 | 10A | Steering angle sensor, Reverse sensing system, Active park assist, Heated seat, AWD, DC/AC inverter, Rearview camera |
| 36 | 5A | Passive anti-theft system module |
| 37 | 10A | Not used (spare) |
| 38 | 20A | TT park lamps |
| 39 | 20A | Radio/navigation |
| 40 | 20A | Rear heated seats |
| 41 | 15A | Switch illumination, Auto dimming mirror, Moon roof, Mood lighting |
| 42 | 10A | Not used (spare) |
| 43 | 10A | Auxiliary climate control relay, Rear window defroster relay, Rear wiper |
| 44 | 10A | Not used (spare) |
| 45 | 5A | Wiper relay, climate control relay |
| 46 | 7.5A | Occupant classification sensor (OCS), Passenger airbag deactivation indicator (PADI) |
| 47 | 30A Circuit Breaker | Power Windows |
| 48 | Full ISO relay | Delayed accessory relay |
Power Distribution Box
List of fuses in the power distribution box (2011)
| № | A | Protected Circuits |
|---|---|---|
| 1 | 80A* | Passenger compartment fuse panel power |
| 2 | 80A* | Passenger compartment fuse panel power |
| 3 | 30A* | Trailer tow brake controller |
| 4 | 30A* | Front wipers |
| 5 | 30A* | Passenger power seat |
| 6 | 20A* | Power point (instrument panel) |
| 7 | 30A* | Amplifier |
| 8 | – | Not used |
| 9 | 40A* | Anti-lock brake system (ABS) pump |
| 10 | 30A* | Starter relay |
| 11 | 30A* | Powertrain control module (PCM) relay |
| 12 | 20A* | ABS valve |
| 13 | 20A** | Left high intensity discharge (HID) headlamp |
| 14 | 10A** | Brake on/off (BOO) switch |
| 15 | 25A** | Rear wiper |
| 16 | 20A** | Right HID headlamp |
| 17 | 10A** | Alternator sensor |
| 18 | 20A* | Rear power point |
| 19 | 20A* | Console power point |
| 20 | 40A* | Rear defroster |
| 21 | 20A* | Console power point (rear of front console) |
| 22 | 20A* | Subwoofer amplifier |
| 23 | 10A** | PCM keep alive power, Canister vent |
| 24 | 10A** | A/C clutch |
| 25 | 15A** | Refrigerator |
| 26 | 20A** | Backup relay |
| 27 | 15A** | Fuel relay (Fuel pump driver module, Fuel pump) |
| 28 | 80A* | Cooling fan |
| 29 | – | Not used |
| 30 | 30A* | Battery charge – trailer tow (TT) |
| 31 | 40A* | Auxiliary blower motor |
| 32 | 30A* | Driver seat motor |
| 33 | 30A* | 3rd row power seats |
| 34 | 30A* | Power liftgate |
| 35 | 40A* | Front A/C blower |
| 36 | 10A** | Backup lamps |
| 37 | 10A** | PCM run/start |
| 38 | 10A** | TT backup lamps |
| 39 | Diode | Fuel diode |
| 40 | Diode | One touch integrated start diode |
| 41 | G8VA relay | TT park lamp |
| 42 | G8VA relay | TT stop/turn lamp (left) |
| 43 | G8VA relay | TT stop/turn lamp (right) |
| 44 | G8VA relay | Backup lamps relay |
| 45 | – | Not used |
| 46 | 15A** | Vehicle power 2, Vehicle power 3 |
| 47 | 20A** | Vehicle power 1 – PCM power |
| 48 | 15A** | Vehicle power – coils on plugs |
| 49 | 10A** | Heated mirrors |
| 50 | HC micro relay | Blower motor |
| 51 | HC micro relay | Rear wiper |
| 52 | HC micro relay | Starter |
| 53 | HC micro relay | 3rd row power seats |
| 54 | – | Not used |
| 55 | HC micro relay | Front wiper relay |
| 56 | HC micro relay | Rear window defroster |
| 57 | – | Not used |
| 58 | – | Not used |
| 59 | HC micro relay | Auxiliary blower motor |
| 60 | HC micro relay | TT battery charge |
| 61 | – | Not used |
| 62 | G8VA relay | Refrigerator |
| 63 | – | Not used |
| 64 | HC micro relay | PCM |
| 65 | G8VA relay | A/C clutch |
| 66 | G8VA relay | Fuel pump |
| * Cartridge Fuses ** Mini Fuses | ||
2012
Passenger Compartment Fuse Panel
List of fuses in the passenger compartment fuse panel (2012)
| № | A | Protected Circuits |
|---|---|---|
| 1 | 30A | Driver smart window motor |
| 2 | 15A | Trailer tow (TT) stop/turn lamps |
| 3 | 15A | Not used (spare) |
| 4 | 30A | DC/AC inverter |
| 5 | 10A | Keypad illumination, Brake transmission shift interlock |
| 6 | 20A | Turn signals |
| 7 | 10A | Low beam headlamps (left) |
| 8 | 10A | Low beam headlamps (right) |
| 9 | 15A | Interior lights, Cargo lamps |
| 10 | 15A | Backlighting, Puddle lamps |
| 11 | 10A | All wheel drive (AWD) |
| 12 | 7.5A | Not used (spare) |
| 13 | 5A | Keypad, Mirror switch, Memory module, DSM logic, Adjustable pedais |
| 14 | 10A | Power liftgate module, Center information display, SYNC, Global positioning system (GPS) module, DVD |
| 15 | 10A | Climate control head |
| 16 | 15A | Electronic finish panel, Navigation screen |
| 17 | 20A | All power lock motor feeds, Liftgate release |
| 18 | 20A | 2nd row power fold seats, Heated seats |
| 19 | 25A | Moon roof |
| 20 | 15A | Data link connector, Memory seat |
| 21 | 15A | Fog lamps, Fog lamp indicator |
| 22 | 15A | Park lamps |
| 23 | 15A | High beam headlamps |
| 24 | 20A | Horn |
| 25 | 10A | Demand lamps/Interior lamps, Power fold seats |
| 26 | 10A | Instmment panel cluster |
| 27 | 20A | Ignition Switch |
| 28 | 5A | Radio/navigation |
| 29 | 5A | Instmment panel cluster |
| 30 | 5A | Transmission shifter |
| 31 | 10A | Not used (spare) |
| 32 | 10A | Restraint control module |
| 33 | 10A | TT battery charge relay coil |
| 34 | 5A | Roll stability control, Refrigerator relay coil, Electric power assist steering |
| 35 | 10A | Steering angle sensor, Reverse sensing system, Active park assist, Heated seat, AWD, DC/AC inverter, Rearview camera |
| 36 | 5A | Passive anti-theft system module |
| 37 | 10A | Not used (spare) |
| 38 | 20A | TT park lamps |
| 39 | 20A | Radio/navigation |
| 40 | 20A | Rear heated seats |
| 41 | 15A | Switch illumination, Auto dimming mirror, Moon roof, Mood lighting |
| 42 | 10A | Not used (spare) |
| 43 | 10A | Auxiliary climate control relay, Rear window defroster relay, Rear wiper |
| 44 | 10A | Not used (spare) |
| 45 | 5A | Wiper relay, climate control relay |
| 46 | 7.5A | Occupant classification sensor (OCS), Passenger airbag deactivation indicator (PADI) |
| 47 | 30A Circuit Breaker | Power Windows |
| 48 | Full ISO relay | Delayed accessory relay |
Power Distribution Box
List of fuses in the power distribution box (2012)
| № | A | Protected Circuits |
|---|---|---|
| 1 | 80A* | Passenger compartment fuse panel power |
| 2 | 80A* | Passenger compartment fuse panel power |
| 3 | 30A* | Trailer tow brake controller |
| 4 | 30A* | Front wipers |
| 5 | 30A* | Passenger power seat |
| 6 | 20A* | Power point (ínstrument panel) |
| 7 | 30A* | Amplifier |
| 8 | – | Not used |
| 9 | 40A* | Anti-lock brake system (ABS) pump |
| 10 | 30A* | Starter relay |
| 11 | 30A* | Powertrain control module (PCM) relay |
| 12 | 20A* | ABS valve |
| 13 | 20A** | Left high intensity discharge (HID) headlamp |
| 14 | 10A** | Brake on/off (BOO) switch |
| 15 | 25A** | Rear wiper |
| 16 | 20A** | Right HID headlamp |
| 17 | 10A** | Alternator sensor |
| 18 | 20A* | Rear power point |
| 19 | 20A* | Console power point |
| 20 | 40A* | Rear defroster |
| 21 | 20A* | Console power point (rear of front console) |
| 22 | – | Not used |
| 23 | 10A** | PCM keep alive power, Canister vent |
| 24 | 10A** | A/C clutch |
| 25 | 15A** | Refrigerator |
| 26 | 20A** | Backup relay |
| 27 | 15A** | Fuel relay (Fuel pump driver module, Fuel pump) |
| 28 | 80A* | Cooling fan |
| 29 | – | Not used |
| 30 | 30A* | Battery charge – trailer tow (TT) |
| 31 | 40A* | Auxiliary blower motor |
| 32 | 30A* | Driver seat motor |
| 33 | 30A* | 3rd row power seats |
| 34 | 30A* | Power liftgate |
| 35 | 40A* | Front A/C blower |
| 36 | 10A** | Backup lamps |
| 37 | 10A** | PCM run/start |
| 38 | 10A** | TT backup lamps |
| 39 | Diode | Fuel diode (iVCT only) |
| 40 | Diode | One touch integrated start diode |
| 41 | G8VA relay | TT park lamp |
| 42 | G8VA relay | TT stop/turn lamp (left) |
| 43 | G8VA relay | TT stop/turn lamp (right) |
| 44 | G8VA relay | Backup lamps relay |
| 45 | – | Not used |
| 46 | 15A** | Vehicle power 2, Vehicle power 3 |
| 47 | 20A** | Vehicle power 1 – PCM power |
| 48 | 15A** | Vehicle power – coils on plugs |
| 49 | 10A** | Heated mirrors |
| 50 | HC micro relay | Blower motor |
| 51 | HC micro relay | Rear wiper |
| 52 | HC micro relay | Starter |
| 53 | HC micro relay | 3rd row power seats |
| 54 | – | Not used |
| 55 | HC micro relay | Front wiper relay |
| 56 | HC micro relay | Rear window defroster |
| 57 | – | Not used |
| 58 | – | Not used |
| 59 | HC micro relay | Auxiliary blower motor |
| 60 | HC micro relay | TT battery charge |
| 61 | – | Not used |
| 62 | G8VA relay | Refrigerator |
| 63 | – | Not used |
| 64 | HC micro relay | PCM |
| 65 | G8VA relay | A/C clutch |
| 66 | G8VA relay | Fuel pump |
| * Cartridge Fuses ** Mini Fuses | ||
Conclusion
Knowing the fuse box and relay locations on your 2009–2012 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 is relatively straightforward 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.
