
IDENTIFYING COMPONENTS IN THE ENGINE COMPARTMENT
3.5L V6 engine
1. Power steering fluid reservoir
2. Engine coolant reservoir
3. Brake fluid reservoir
4. Battery
5. Power distribution box
6. Air filter assembly
7. Automatic transmission fluid dipstick
8. Engine oil dipstick
9. Engine oil filler cap
10. Windshield washer fluid reservoir
Maintenance and Specifications
345
2010 Flex(471)
Owners Guide, 1st Printing
USA(fus)

3.5L V6 EcoBoost engine
1. Engine coolant reservoir
2. Brake fluid reservoir
3. Battery
4. Power distribution box
5. Air filter assembly
6. Automatic transmission fluid dipstick (out of view)
7. Engine oil dipstick
8. Engine oil filler cap
9. Windshield washer fluid reservoir
Maintenance and Specifications
346
2010 Flex(471)
Owners Guide, 1st Printing
USA(fus)

4. Attach the new wiper to the
wiper arm and press it into place
until a click is heard.
If you find this procedure too
difficult, please see your dealer.
ENGINE OIL
Checking the engine oil
Refer to thescheduled maintenance informationfor the appropriate
intervals for checking the engine oil.
1. Make sure the vehicle is on level ground.
2. Turn the engine off and wait 15 minutes for the oil to drain into the
oil pan.
3. Set the parking brake and ensure the gearshift is securely latched in P
(Park).
4. Open the hood. Protect yourself from engine heat.
5. Locate and carefully remove the
engine oil level dipstick.
6. Wipe the dipstick clean. Insert the dipstick fully, then remove it again.
•If the oil level iswithin this
range,the oil level is acceptable.
DO NOT ADD OIL.
Maintenance and Specifications
349
2010 Flex(471)
Owners Guide, 1st Printing
USA(fus)

•If the oil level isbelow this
mark,engineoil must be added
to raise the level within the
normal operating range.
•If required, add engine oil to the
engine. Refer toAdding engine
oilin this chapter.
•Do not overfill the engine
with oil. Oil levels above this
mark may cause engine
damage.If the engine is
overfilled, some oil must be
removed from the engine by an
authorized dealer.
7. Put the dipstick back in and ensure it is fully seated.
Adding engine oil
1. Check the engine oil. For instructions, refer toChecking the engine
oilin this chapter.
2. If the engine oil level is not within the normal operating range, add
only certified engine oil of the recommended viscosity. Remove the
engine oil filler cap and use a funnel to pour the engine oil into the
opening.
3. Recheck the engine oil level. Make sure the oil level is not above the
normal operating range on the engine oil level dipstick.
4. Install the dipstick and ensure it is fully seated.
5. Fully install the engine oil filler cap by turning the filler cap clockwise
until it stops.
To avoid possible oil loss, DO NOT operate the vehicle with the
engine oil level dipstick and/or the engine oil filler cap removed.
Maintenance and Specifications
350
2010 Flex(471)
Owners Guide, 1st Printing
USA(fus)

Child safety seats ......................203
in front seat ............................204
in rear seat ..............................204
LATCH .....................................207
recommendations ...................201
tether anchorage hardware ...210
Child safety seats - booster
seats ...........................................213
Cleaning your vehicle
engine compartment ..............336
instrument panel ....................339
interior .....................................340
plastic parts ............................338
washing ....................................334
waxing .....................................335
wheels ......................................335
wiper blades ............................338
Climate control
(see Air conditioning or
Heating) ...........................68, 71, 74
Clock ............................................93
Clock adjust
AM/FM .......................................29
Compass, electronic ....................94
calibration .................................95
set zone adjustment .................95
Console
overhead ....................................94
Controls
power seat ...............................156
steering column ......................106
Coolant
checking and adding ..............354
refill capacities ................357, 379
specifications ..........................379
Cooler ..........................................97
Cruise control
(see Speed control) ..................104Customer Assistance ................292
Ford Extended Service
Plan ..........................................388
Getting assistance outside the
U.S. and Canada .....................331
Getting roadside assistance ...292
Getting the service you
need .........................................327
Ordering additional owner’s
literature .................................332
Utilizing the
Mediation/Arbitration
Program ...................................330
D
Daytime running lamps
(see Lamps) ................................82
Defrost
rear window and rearview
mirrors .......................................74
windshield .................................74
Dipstick
automatic transmission
fluid ..........................................374
engine oil .................................349
Driving under special
conditions ..........................287, 289
sand .........................................288
snow and ice ...........................290
through water .................288, 291
DVD system .................................46
E
Electronic message center .........18
Emergencies, roadside
jump-starting ..........................319
running out of fuel .........319, 365
Emission control system ..........370
Index
392
2010 Flex(471)
Owners Guide, 1st Printing
USA(fus)

Engine ........................................382
cleaning ...................................336
coolant .....................................354
fail-safe cooling .......................359
idle speed control ...................352
lubrication specifications .......379
refill capacities ........................379
service points ..................345–346
Engine block heater .................258
Engine oil ..................................349
change oil soon warning,
message center .......................349
checking and adding ..............349
dipstick ....................................349
filter, specifications ........351, 378
recommendations ...................351
refill capacities ........................379
specifications ..........................379
Event data recording ....................7
Exhaust fumes ..........................258
F
Fail safe cooling ........................359
Family entertainment system ....46
Fleet MyKey programming ......143
Fluid capacities .........................379
Fog lamps ....................................81
Four-Wheel Drive vehicles
driving off road .......................286
Freezer ........................................97
Fuel ............................................361
calculating fuel
economy ............................20, 367
cap ...........................................363
capacity ...................................379
choosing the right fuel ...........364comparisons with EPA fuel
economy estimates .................370
detergent in fuel .....................365
filler funnel .............................365
filling your vehicle with
fuel ...........................361, 363, 367
filter, specifications ........361, 378
fuel pump shut-off ..................294
improving fuel economy ........367
octane rating ...................364, 382
quality ......................................365
running out of fuel .........319, 365
safety information relating to
automotive fuels .....................361
Fuses ..........................................294
G
Garage door opener ..................109
Gas cap (see Fuel cap) ............363
Gas mileage
(see Fuel economy) .................367
Gauges .........................................16
H
Hazard flashers .........................293
Head restraints .................160, 162
Headlamps ...................................80
aiming ..................................82–83
autolamp system .......................80
bulb specifications ....................86
daytime running lights .............82
flash to pass ..............................81
high beam .................................81
replacing bulbs .........................87
turning on and off ....................80
Heating
heating and air conditioning
system ...........................68, 71, 74
Index
393
2010 Flex(471)
Owners Guide, 1st Printing
USA(fus)