Ford Flex Fuse Box: What Each Fuse Does
From the 2019 Ford Flex owner's manual. 1 fuse box listed.
Power Distribution Box
| Fuse | Amps | Circuit |
|---|---|---|
| 5 | 50 A | Anti-lock brake system pump. |
| 6 | 20 A | Center console power point (without rear park aid). |
| 7 | 30 A | Power liftgate. |
| 8 | 20 A | Moonroof. |
| 9 | 20 A | Second row console power point. |
| 10 | – | Third row power seats relay. |
| 11 | – | Heated rear window relay. |
| 12 | – | Trailer tow battery charge relay. |
| 13 | – | Starter motor relay. |
| 14 | – | Cooling fan number 2 relay. |
| 15 | – | Fuel pump relay. |
| 16 | – | Not used. |
| 17 | 30 A | 110V AC power point. |
| 18 | 40 A | Front blower motor relay. |
| 19 | 30 A | Starter relay. |
| 20 | 20 A | Storage bin power point. |
| 21 | 20 A | Instrument panel power point / cigar lighter. |
| 22 | 30 A | Third row seat module. |
| 23 | 30 A | Driver power seat. |
| 24 | 30 A | Memory module. Trailer tow battery charge. |
| 25 | – | Not used. |
| 26 | 40 A | Rear window defroster. |
| 27 | 20 A | Heated mirrors. Cargo power point. |
| 28 | 30 A | Front heated and cooled seats. |
| 29 | 20 A | Front heated seats (without cooled seats). |
| 30 | 20 A | Rear heated seats. |
| 31 | 25 A | Electric fan relay 3. |
| 32 | – | Auxiliary blower motor relay. |
| 33 | – | Cooling fan #1 relay. |
| 34 | – | Front blower motor relay. |
| 35 | – | Cooling fan (series) relay. |
| 36 | – | Not used. |
| 37 | – | Trailer tow right-hand stop/turn lamps relay. |
| 38 | – | Trailer tow reverse lamps relay. |
| 39 | 30 A | Auxiliary blower motor. |
| 40 | – | Not used. |
| 41 | – | Not used. |
| 42 | 30 A | Passenger power seat. |
| 43 | 20 A | Anti-lock brake system valves. |
| 44 | – | Windshield washer relay. |
| 45 | 5 A | Rain sensor. |
| 46 | 5 A | Canister vent solenoid (EcoBoost engines). |
| 47 | 15 A | Washer pump. |
| 48 | 10 A | Front park lamps. |
| 49 | – | Not used. |
| 50 | 10 A | Heated mirrors. |
| 51 | – | Not used. |
| 52 | – | Not used. |
| 53 | – | Trailer tow left-hand stop/turn lamps relay. |
| 54 | – | Not used. |
| 55 | – | Wiper relay. |
| 56 | 30 A | Fuel injectors. |
| 57 | 20 A | Fuel pump relay. Left-hand high intensity discharge head- lamp. |
| 58 | 10 A | Alternator sensor. |
| 59 | 10 A | Brake on/off switch. |
| 60 | 10 A | Trailer tow back-up lamps. |
| 61 | – | Not used. |
| 62 | 10 A | A/C clutch relay. |
| 63 | 15 A | Trailer tow stop/turn lamps. |
| 64 | 15 A | Rear wipers. |
| 65 | – | Not used. |
| 66 | – | Powertrain control module – vehicle power relay. |
| 68 | 20 A | Vehicle power #4 (ignition coils). |
| 69 | 20 A | Vehicle power 1 (powertrain control module). |
| 71 | – | Not used. |
| 72 | – | Not used. |
| 73 | – | Not used. |
| 74 | – | Not used. |
| 75 | – | Not used. |
| 76 | – | Not used. |
| 77 | – | Trailer tow park lamps relay. |
| 78 | 20 A | Right high-intensity discharge headlamp. |
| 79 | – | Not used. |
| 80 | – | Not used. |
| 81 | – | Not used. |
| 82 | 15 A | Rear washer. |
| 83 | – | Not used. |
| 84 | 20 A | Trailer tow park lamps. |
| 85 | – | Not used. |
| 87 | 5 A | Canister vent solenoid (non-EcoBoost engines). Run/start relay. |
| 88 | – | Run/start relay. |
| 89 | 10 A | Anti–lock brake system module. |
| 90 | 10 A | Powertrain control module run/start. |
| 91 | 10 A | Adaptive cruise control module. |
| 92 | 5 A | Front blower relay coil. |
| 93 | 5 A | Power steering module. Auxiliary blower motor. |
| 94 | 30 A | Rear window defroster relay power. Battery charge relay. Body control module run/start. |
| 95 | 5 A | Front passenger window switch. |
| 96 | – | Not used. |
| 97 | – | Not used. |
| 98 | – | A/C clutch relay. |
Listings are copied as text from the manual's fuse tables (AI-assisted; every circuit name was matched against the cited pages 2026-10-18). Fuse layouts can differ by trim and year; check the label on the fuse box cover before replacing a fuse, and always use the same amp rating.
Confirm with your own manual, dipstick or door-jamb label.
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