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Owner’s manual specs

2018 Ford Flex Specs: Oil Capacity, Fluids, Maintenance Schedule & Fuse Box

Figures for the 2018 Ford Flex, copied from Ford’s own owner’s manual. Every one links to the manual page it came from.

From the manufacturer’s manuals. Every figure here is copied from the manufacturer's own manual, with a link to the page it came from. Where a manual is unclear or contradicts itself, we leave the figure out.

Engines in this manual: 3.5L DURATEC, 3.5L ECOBOOST. Figures that differ by engine say which engine they are for.

Fluids & capacities

3.5L DURATEC

3.5L ECOBOOST

Maintenance schedule

Normal service schedule

Use this for ordinary driving.

ServiceWhen
Replace cabin air filter.

Source: Owner’s Manual Printing 2 (PDF), page 452

Every 20,000 mi(32,000 km)
Replace engine air filter.

Source: Owner’s Manual Printing 2 (PDF), page 452

Every 30,000 mi(48,000 km)

Severe service schedule

Use this if you tow, idle a lot, drive short trips in the cold, or run in dust.

ServiceWhen
Change engine oil and filter as indicated by the information display and perform services listed in the Normal Scheduled Maintenance chart.

Applies to: Towing a trailer or using a car-top carrier

Source: Owner’s Manual Printing 2 (PDF), page 453

As required
Change engine oil and filter.

Applies to: Operating in off-road (unpaved, sandy, dusty) and Mountainous conditions

Source: Owner’s Manual Printing 2 (PDF), page 454

Every 5,000 mi(8,000 km)
Replace cabin air filter.

Applies to: Extensive idling or low-speed driving for long distances, as in heavy commercial use

Source: Owner’s Manual Printing 2 (PDF), page 453

Inspect frequently, service as required
Replace engine air filter.

Applies to: Extensive idling or low-speed driving for long distances, as in heavy commercial use

Source: Owner’s Manual Printing 2 (PDF), page 453

Inspect frequently, service as required

Oil life & reset procedures

Oil change indicator reset

Before you start

  • Use the information display controls on the steering wheel to reset the oil change indicator.
  • From the main menu scroll to:

Steps

  1. Press the right arrow button, then from this menu scroll to the following message. [Settings]
  2. Press the right arrow button, then from this menu scroll to the following message. [Vehicle]
  3. Press the right arrow button, then from this menu scroll to the following message. [Oil Life]
  4. Press and hold the OK button until the instrument cluster displays the following message. Reset Successful [Hold OK to Reset]

You’ll know it worked: When the oil change indicator resets the instrument cluster displays 100%. Remaining Life {00}%

Source: Owner’s Manual Printing 2 (PDF), page 250

Fuse box locations & fuse chart

Passenger Compartment Fuse Panel

Where to find it

Passenger Compartment Fuse Panel The fuse panel is under the instrument panel to the left of the steering wheel.

to remove a trim panel to access it.

Source: Owner’s Manual Printing 1 (PDF), page 237

What each fuse protects

FuseAmpsProtectsSource
130ADriver front power windowp.240
215AMemory seat. Second row seats.p.240
330APassenger side front windowp.240
410ADemand lamps battery saver relayp.240
520AAudio amplifier Active noise control modulep.240
65ANot used (spare)p.240
77.5ADriver seat module logic. Left front door zone module. Keypad.p.240
810APower liftgatep.240
910ASYNC module. Electronic finish panel. Radio frequency transceiver module.p.241
1010ARun accessory relay. Front wiper motor relay.p.241
1110AIntelligent access module logic. Heads-up display.p.241
1215APuddle lamp. Backlighting LED. Interior lighting.p.241
1315ARight-hand direction indicatorsp.241
1415ALeft-hand direction indicatorsp.241
1515ACenter high mounted stop lamp. Backup lamp.p.241
1610ARight low beam headlampp.241
1710ALeft low beam headlampp.241
1810AThird row power seats. Start button. Keypad illumination. Brake-shift interlock. Powertrain control module wake-up. Anti-theft system.p.241
1920ANot used (spare)p.241
2020ALocksp.241
2110AExtended power modulep.241
2220AHorn relayp.241
2315ASteering wheel control module logic. Instrument cluster.p.241
2415ASteering wheel control module. Datalink.p.241
2515ALiftgate releasep.241
2720AIntelligent access module powerp.242
2815ANot used (spare)p.242
2920ARadio. Global positioning system module.p.242
3015AFront park lamps. Trailer tow relay for park lamps. Front side markers.p.242
315ATrailer tow brake controllerp.242
3215ASmart window motors. Master window and mirror switch. Lock switch illumination. Moonroof. 110V AC power point. Interior rearview mirror.p.242
3310ANot used (spare)p.242
3410AReverse park aid module. Rear heated seat module. Blind spot monitor module. Rear video camera. Interior mirror.p.242
355AClimate control humidity sensor. Heads-up display.p.242
3610AHeated steering wheelp.242
3710ARefrigeratorp.242
3810AFront passenger window switchp.242
3915AHigh beamsp.242
4010ARear park lamps. License plate lamps.p.242
417.5AExtended power modulep.242
425ANot used (spare)p.242
4310ANot used (spare)p.242
4410ANot used (spare)p.243
455ANot used (spare)p.243
4610AClimate control modulep.243
4715AFog lamp relay power. Front direction indicators.p.243
4830AFront passenger power window. Rear power windows.p.243
49—Delayed accessory relay. Body control module.p.243

Power Distribution Box

Where to find it

The power distribution box is in the engine compartment.

Source: Owner’s Manual Printing 1 (PDF), page 232

What each fuse protects

FuseAmpsProtectsSource
1—Fan relay 2p.234
2—Fan relay 1p.234
3—Trailer brake control modulep.234
4—Wipers. Washer pump.p.234
5—Anti-lock brake system pumpp.235
6—Center console power point (without rear park aid)p.235
7—Power liftgatep.235
8—Moonroofp.235
9—Second row console power pointp.235
10—Third row power seats relayp.235
11—Heated rear window relayp.235
12—Trailer tow battery charge relayp.235
13—Starter motor relayp.235
14—Cooling fan number 2 relayp.235
15—Fuel pump relayp.235
16—Not usedp.235
17—110V AC power pointp.235
18—Front blower motor relayp.235
19—Starter relayp.235
20—Storage bin power pointp.235
21—Instrument panel power point / cigar lighterp.235
22—Third row seat modulep.235
23—Driver power seat. Memory module.p.235
24—Trailer tow battery chargep.235
25—Not usedp.235
26—Rear window defroster. Heated mirrors.p.236
27—Cargo power pointp.236
28—Front heated and cooled seatsp.236
29—Front heated seats (without cooled seats)p.236
30—Rear heated seatsp.236
31—Electric fan relay 3p.236
32—Auxiliary blower motor relayp.236
33—Cooling fan #1 relayp.236
34—Front blower motor relayp.236
35—Cooling fan (series) relayp.236
36—Not usedp.236
37—Trailer tow right-hand stop/turn lamps relayp.236
38—Trailer tow reverse lamps relayp.236
39—Auxiliary blower motorp.236
40—Not usedp.236
41—Not usedp.236
42—Passenger power seatp.236
43—Anti-lock brake system valvesp.236
44—Windshield washer relayp.236
45—Rain sensorp.236
46—Canister vent solenoid (EcoBoost engines)p.236
47—Washer pumpp.236
48—Front park lampsp.237
49—Not usedp.237
50—Heated mirrorsp.237
51—Not usedp.237
52—Not usedp.237
53—Trailer tow left-hand stop/turn lamps relayp.237
54—Not usedp.237
55—Wiper relayp.237
56—Fuel injectors. Fuel pump relay.p.237
57—Left-hand high intensity discharge headlampp.237
58—Alternator sensorp.237
59—Brake on/off switchp.237
60—Trailer tow back-up lampsp.237
61—Not usedp.237
62—A/C clutch relayp.237
63—Trailer tow stop/turn lampsp.237
64—Rear wipersp.237
65—Not usedp.237
66—Powertrain control module - vehicle power relayp.237
67—Vehicle power #2 - oxygen sensor heater. Mass airflow sensor. Variable camshaft timing solenoid valve. Canister vent solenoid. Canister purge solenoid.p.237
68—Vehicle power #4 (ignition coils)p.238
69—Vehicle power 1 (powertrain control module)p.238
70—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.p.238
71—Not usedp.238
72—Not usedp.238
73—Not usedp.238
74—Not usedp.238
75—Not usedp.238
76—Not usedp.238
77—Trailer tow park lamps relayp.238
78—Right high-intensity discharge headlampp.238
79—Not usedp.238
80—Not usedp.238
81—Not usedp.238
82—Rear washerp.238
83—Not usedp.238
84—Trailer tow park lampsp.238
85—Not usedp.238
87—Run/start relayp.239
88—Run/start relayp.239
89—Anti-lock brake system modulep.239
90—Powertrain control module run/startp.239
91—Adaptive cruise control modulep.239
92—Front blower relay coil. Power steering module.p.239
93—Auxiliary blower motor. Rear window defroster relay power. Battery charge relay.p.239
94—Body control module run/startp.239
95—Front passenger window switchp.239
96—Not usedp.239
97—Not usedp.239
98—A/C clutch relayp.239

More fuse pages in the manual

Diagrams and printed legends we can’t host. Check the box name printed on a diagram before counting positions.

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