Page 8 of 571

Maintenance 293
General information...................................293
Opening and closing the hood............................294
Under hood overview..................................295
Engine oil dipstick....................................297
Engine oil check......................................297
Engine coolant check..................................298
Automatic transmission fluid check........................304
Brake fluid check.....................................308
Fuel filter...........................................308
Washer fluid check....................................309
Battery ............................................309
Checking the wiper blades..............................311
Changing the wiper blades..............................311
Air filter(s).........................................312
Adjusting the headlamps................................314
Changing a bulb......................................315
Vehicle Care 320
Cleaning products.....................................320
Cleaning the exterior..................................320
Waxing.............................................322
Repairing minor paint damage............................322
Cleaning the engine...................................322
Cleaning the windows and wiper blades.....................323
Cleaning the interior...................................324
Cleaning the instrument panel and instrument cluster lens.......324
Cleaning leather seats..................................325
Cleaning the alloy wheels...............................326
Vehiclestorage.......................................327
Table of Contents7
2015 Flex(471)
Owners Guide gf, 1st Printing, October 2014
USA(fus)
Page 289 of 571
Fuse or relay
numberFuse amp
ratingProtected components
61 — Not used
62 10A* A/C clutch
63 15A* Trailer tow stop/turn lamps
64 15A* Rear wipers
65 — Not used
66 — Powertrain control module –
vehicle power relay
67 20A* Vehicle power #2 – Oxygen
sensor heater, Mass airflow
sensor, Variable camshaft timing
solenoid, Canister vent solenoid,
Canister purge solenoid
68 20A* Vehicle power #4 (ignition coils)
69 20A* Vehicle power #1 (PCM)
70 15A* 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
71 — Not used
72 — Not used
73 — Not used
74 — Not used
75 — Not used
76 — Not used
77 — Trailer tow park lamps relay
288Fuses
2015 Flex(471)
Owners Guide gf, 1st Printing, October 2014
USA(fus)
Page 296 of 571
UNDER HOOD OVERVIEW
3.5L V6 engine
A. Engine coolant reservoir
B. Windshield washer fluid reservoir
C. Brake fluid reservoir
D. Battery
E. Power distribution box
F. Air filter assembly
G. Automatic transmission fluid dipstick
H. Engine oil dipstick
I. Engine oil filler cap
A
IHGF
BCDE
Maintenance295
2015 Flex(471)
Owners Guide gf, 1st Printing, October 2014
USA(fus)
Page 297 of 571
3.5L V6 EcoBoost® Engine
A. Engine coolant reservoir
B. Brake fluid reservoir
C. Battery
D. Power distribution box
E. Air filter assembly
F. Automatic transmission fluid dipstick (out of view)
G. Engine oil dipstick
H. Engine oil filler cap
I. Windshield washer fluid reservoir
ABCD
EFGHI
296Maintenance
2015 Flex(471)
Owners Guide gf, 1st Printing, October 2014
USA(fus)
Page 365 of 571

Items CapacityFord part name or
equivalentFord part number / Ford
specification
A/C refrigerant
capacity
9
3.5L EcoBoost engine
2.44 lb (1.11 kg)
3.5L V6
2.31 lb (1.05 kg)Motorcraft R–134a
RefrigerantYN-19 (U.S.);
CYN–16–R (Canada) /
WSH-M17B19–A
A/C refrigerant
compressor oil
9
3.5L EcoBoost engine
7.9 fl oz (0.23 L)
3.5L V6
8.9 fl oz (0.26 L)Motorcraft PAG Refrigerant
Compressor OilYN-12–D /
WSH-M1C231–B
1Ford recommends using Motorcraft (Ford) DOT 4 Low Viscosity High Performance Brake Fluid or
equivalent meeting WSS-M6C65-A2. Use of any fluid other than the recommended fluid may cause
degraded brake performance and not meet the Ford performance standards. Keep brake fluid clean
and dry. Contamination with dirt, water, petroleum products or other materials may result in brake
system damage and possible failure.2Approximate dry fill capacity. Actual amount may vary during fluid changes.3Automatic transmissions that require MERCON LV should only use MERCON LV fluid. Refer to
scheduled maintenance informationto determine the correct service interval. Use of any fluid other
than the recommended fluid may cause transmission damage.4See your authorized dealer for fluid level checking or filling.5Your engine has been designed to use Motorcraft engine oils or equivalent oils that meet Ford
specifications. It is also acceptable to use an engine oil of recommended viscosity grade that meets
API SN requirements and displays the API Certification Mark for gasoline engines.6Do not use supplemental engine oil additives in your engine. They are unnecessary and could lead to
engine damage that is not covered by your Ford warranty.
364Capacities and Specifications
2015 Flex(471)
Owners Guide gf, 1st Printing, October 2014
USA(fus)
Page 550 of 571

Multi-point Inspection
In order to keep your vehicle running right, it is important to have the
systems on your vehicle checked regularly. This can help identify
potential issues and prevent major problems. Ford Motor Company
recommends the following multi-point inspection be performed at every
scheduled maintenance interval to help make sure your vehicle keeps
running great.
Multi-point inspection
Accessory drive belt(s) Hazard warning system operation
Battery performance Horn operation
Engine air filter Radiator, cooler, heater and A/C hoses
Exhaust system Suspension components for leaks or
damage
Exterior lamps operation Steering and linkage
Fluid levels
*; fill if necessary Tires (including spare) for wear and
proper pressure**
For oil and fluid leaks Windshield for cracks, chips or pits
Half-shaft dust boots Washer spray and wiper operation
*Brake, coolant recovery reservoir, automatic transmission (with an
underhood dipstick) and window washer.
**If your vehicle is equipped with a temporary mobility kit, check the tire
sealant expiration Use By date on the canister. Replace as needed.
Be sure to ask your dealership service advisor or technician about the
multi-point vehicle inspection. It is a comprehensive way to perform a
thorough inspection of your vehicle. It is your checklist that gives you
immediate feedback on the overall condition of your vehicle. You will
know what has been checked, what is okay, as well as those things that
may require future or immediate attention. The multi-point vehicle
inspection is one more way to keep your vehicle running great!
Scheduled Maintenance549
2015 Flex(471)
Owners Guide gf, 1st Printing, October 2014
USA(fus)
Page 553 of 571

Normal scheduled maintenance*
At every oil change
interval as indicated by
the information displayChange engine oil and filter.**
Rotate tires, inspect tire wear and measure
tread depth.
Perform multi-point inspection
(recommended).
Inspect automatic transmission fluid level (if
equipped with dipstick). Consult dealer for
requirements.
Inspect brake pads, shoes, rotors, drums,
brake linings, hoses and parking brake.
Inspect engine cooling system strength and
hoses.
Inspect exhaust system and heat shields.
Inspect rear axle and U-joints. Lubricate if
equipped with grease fittings (All-wheel drive
vehicles).
Inspect half-shaft boots (if equipped).
Inspect steering linkage, ball joints,
suspension, tie-rod ends, driveshaft and
U-joints. Lubricate if equipped with grease
fittings.
Inspect wheels and related components for
abnormal noise, wear, looseness or drag.
*Do not exceed one year or 10000 miles (16000 kilometers) between
service intervals.
**Reset your Intelligent Oil-Life Monitor after each engine oil and filter
change. See theInstrument Clusterchapter.
552Scheduled Maintenance
2015 Flex(471)
Owners Guide gf, 1st Printing, October 2014
USA(fus)
Page 554 of 571
Other maintenance items1
Every 20000 miles
(32000 km)Replace cabin air filter (if equipped).
Every 30000 miles
(48000 km)Replace climate-controlled (heated and
cooled) seat filter (if equipped).
Replace engine air filter.
At 100000 miles
(160000 km)Change engine coolant.
2
Every 100000 miles
(160000 km)Replace spark plugs.
Inspect accessory drive belt(s).3
Every 150000 miles
(240000 km)Change automatic transmission fluid.
Replace accessory drive belt(s) if not replaced
within the last 100000 miles (160000 km).
1These maintenance items can be performed within 3000 miles
(4800 kilometers) of the last oil change. Do not exceed the designated
distance for the interval.
2Initial replacement at six years or 100000 miles (160000 kilometers),
then every three years or 50000 miles (80000 kilometers).
3After initial inspection, inspect every other oil change until replaced.
Scheduled Maintenance553
2015 Flex(471)
Owners Guide gf, 1st Printing, October 2014
USA(fus)