2018 FORD FLEX warning light

How Temperature Affects Your Tire
Pressure
The tire pressure monitoring system
monitors tire pressure in each pneumatic
tire. While driving in a normal manner, a
typical passenger tire inflation pressure
may increase about 2
–4 psi (14– 28 kPa)
from a cold start situation. If the vehicle is
stationary overnight with the outside
temperature significantly lower than the
daytime temperature, the tire pressure may
decrease about 3 psi (21 kPa) for a drop of
30°F (17°C) in ambient temperature. This
lower pressure value may be detected by
the tire pressure monitoring system as
being significantly lower than the
recommended inflation pressure and
activate the system warning light for low
tire pressure. If the low tire pressure
warning light is on, visually check each tire
to verify that no tire is flat. If one or more
tires are flat, repair as necessary. Check
the air pressure in the road tires. If any tire
is under-inflated, carefully drive the vehicle
to the nearest location where air can be
added to the tires. Inflate all the tires to
the recommended inflation pressure.
CHANGING A ROAD WHEEL WARNINGS
The use of tire sealant may damage
your tire pressure monitoring system
and should only be used in roadside
emergencies. If you must use a sealant, the
Ford Tire Mobility Kit sealant should be
used. The tire pressure monitoring system
sensor and valve stem on the wheel must
be replaced by an authorized dealer after
use of the sealant. See
Tire Pressure Monitoring
System (page 293). If the tire
pressure monitor sensor becomes
damaged, it will no longer function. Note:
The tire pressure monitoring system
indicator light will illuminate when the spare
tire is in use. To restore the full function of
the monitoring system, all road wheels
equipped with tire pressure monitoring
sensors must be mounted on the vehicle.
If you get a flat tire while driving, do not
apply the brake heavily. Instead, gradually
decrease your speed. Hold the steering
wheel firmly and slowly move to a safe
place on the side of the road.
Have a flat serviced by an authorized
dealer in order to prevent damage to the
tire pressure monitoring system sensors.
See
Tire Pressure Monitoring System
(page 293). Replace the spare tire with a
road tire as soon as possible. During
repairing or replacing of the flat tire, have
the authorized dealer inspect the tire
pressure monitoring system sensor for
damage.
Dissimilar Spare Wheel and Tire
Assembly Information WARNING
Failure to follow these guidelines
could result in an increased risk of
loss of vehicle control, injury or death.
If you have a dissimilar spare wheel and
tire, then it is intended for temporary use
only. This means that if you need to use it,
you should replace it as soon as possible
with a road wheel and tire assembly that
is the same size and type as the road tires
and wheels that were originally provided
by Ford. If the dissimilar spare tire or wheel
is damaged, it should be replaced rather
than repaired.
A dissimilar spare wheel and tire assembly
is defined as a spare wheel and tire
assembly that is different in brand, size or
appearance from the road tires and wheels
and can be one of three types:
296
Flex (TP3) , enUSA, Edition date: 201801, Second Printing Wheels and Tires

Check Every Month
Engine oil level.
Function of all interior and exterior lights.
Tires (including spare) for wear and proper pressure. Windshield washer fluid level.
Fuel and water separator. Drain if necessary (or if indicated by the information display). Holes and slots in the tail pipe to make sure they are functional and clear of debris. Check Every Six Months
Battery connections. Clean if necessary.
Body and door drain holes for obstructions. Clean if necessary. Cooling system fluid level and coolant strength.
Door weatherstrips for wear. Lubricate if necessary.
Hinges, latches and outside locks for proper operation. Lubricate if necessary. Parking brake for proper operation.
Safety belts and seat latches for wear and function.
Safety warning lamps (brake, ABS, airbag and safety belt) for operation.
Washer spray and wiper operation. Clean or replace blades as necessary.
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. We recommend having the
following multi-point inspection performed
at every scheduled maintenance interval
to help make sure your vehicle keeps
running great.
449
Flex (TP3) , enUSA, Edition date: 201801, Second Printing Scheduled Maintenance

A
A/C
See: Climate Control.......................................... 114
About This Manual...........................................7
ABS See: Brakes............................................................ 175
ABS driving hints See: Hints on Driving With Anti-Lock
Brakes................................................................. 176
Accessories....................................................443 Exterior Style....................................................... 443
Interior Style........................................................ 443
Lifestyle................................................................. 443
Peace of Mind..................................................... 443
Accessories See: Replacement Parts
Recommendation............................................ 12
ACC See: Using Adaptive Cruise Control............190
Active Park Assist..........................................181 Automatic Steering into Parking
Space................................................................. 183
Deactivating the Park Assist Feature..........184
Troubleshooting the System.......................... 184
Using Active Park Assist................................... 182
Adjusting the Headlamps........................260 Horizontal Aim Adjustment............................ 261
Vertical Aim......................................................... 260
Adjusting the Pedals.....................................79
Adjusting the Steering Wheel - Vehicles With: Manual Adjustable Steering
Column............................................................76
Adjusting the Steering Wheel - Vehicles With: Power Adjustable Steering
Column............................................................75
End of Travel Position......................................... 75
Airbag Disposal................................................51
Air Conditioning See: Climate Control.......................................... 114
Air Filter See: Changing the Engine Air Filter.............267
Alarm See: Anti-Theft Alarm......................................... 74
All-Wheel Drive.............................................168
Ambient Lighting
...........................................86
Anti-Theft Alarm............................................74
Arming the Alarm................................................. 74Disarming the Alarm...........................................
74
Appendices....................................................465
Apps...................................................................412 ........................................................................\
........... 412
SiriusXM Traffic and Travel Link.................... 414
At a Glance........................................................16
Audible Warnings and Indicators.............96 Headlamps On Warning Chime..................... 96
Key in Ignition Warning Chime........................ 96
Keyless Warning Alert........................................ 96
Parking Brake On Warning Chime.................96
Audio Control
...................................................76
MEDIA....................................................................... 76
Seek, Next or Previous......................................... 77
Audio System.................................................317 General Information........................................... 317
Audio Unit - Vehicles With: AM/FM/CD/ SYNC/Satellite Radio
..............................318
Menu Structure.................................................. 320
Audio Unit - Vehicles With: Premium AM/FM/CD..................................................323
Audio Unit - Vehicles With: Sony AM/ FM/CD...........................................................324
Autolamps
........................................................83
Windshield Wiper Activated
Headlamps........................................................ 83
Automatic Climate Control - Vehicles With: Premium AM/FM/CD....................115
Automatic Climate Control - Vehicles With: Sony Audio System........................116
Automatic Transmission
...........................164
Automatic Transmission Adaptive
Learning............................................................. 167
Brake-Shift Interlock......................................... 166
If Your Vehicle Gets Stuck In Mud or Snow................................................................... 167
SelectShift Automatic ™
Transmission................................................... 164
Understanding the Positions of Your Automatic Transmission............................ 164
Automatic Transmission Fluid Check
............................................................254
Adding Transmission Fluid ............................ 255
Checking the Transmission Fluid Level................................................................... 255
Autowipers.......................................................80
Auxiliary Power Points................................143 110 Volt AC Power Point................................... 143
495
Flex (TP3) , enUSA, Edition date: 201801, Second Printing Index

Cleaning the Instrument Panel and
Instrument Cluster Lens..........................271
Cleaning the Interior.....................................271
Cleaning the Wheels
...................................273
Cleaning the Windows and Wiper Blades...........................................................270
Clearing All MyKeys
.......................................59
Climate............................................................396
Climate Control
..............................................114
Climate Controlled Seats...........................137 Cooled Seats......................................................... 137
Heated Seats........................................................ 137
Collision Warning System.........................201 PRINCIPLE OF OPERATION........................... 201
Coolant Check See: Engine Coolant Check........................... 250
Crash Sensors and Airbag Indicator
.......50
Creating a MyKey...........................................58
Programming/Changing Configurable
Settings............................................................... 58
Cross Traffic Alert.........................................198 False Alerts.......................................................... 200
Switching the System Off and On..............200
System Errors..................................................... 200
System Lights, Messages and Audible Alerts.................................................................. 199
System Limitations.......................................... 200
Using the System............................................... 198
Cruise Control
...................................................77
Principle of Operation...................................... 189
Cruise control See: Using Cruise Control................................ 189
Customer Assistance
..................................227
D
Data Recording
..................................................9
Event Data Recording.......................................... 10
Service Data Recording........................................ 9
Daytime Running Lamps............................84
Direction Indicators
.......................................85
Doors and Locks.............................................63
Driver and Passenger Airbags...................45 Children and Airbags.......................................... 46
Proper Driver and Front Passenger Seating Adjustment........................................................ 45
Driving Aids
.....................................................196
Driving Hints...................................................218 Driving Through Water
................................219
DRL See: Daytime Running Lamps......................... 84
E
Economical Driving
......................................218
Electromagnetic Compatibility..............465
Emission Law.................................................160 Noise Emissions Warranty, Prohibited
Tampering Acts and Maintenance...........161
Tampering With a Noise Control System.............................................................. 160
End User License Agreement..................467 VEHICLE SOFTWARE END USER LICENSE
AGREEMENT (EULA) ................................. 467
Engine Block Heater
.....................................151
Using the Engine Block Heater...................... 152
Engine Coolant Check...............................250 Adding Coolant.................................................... 251
Coolant Change.................................................. 253
Engine Coolant Temperature Management.................................................. 254
Fail-Safe Cooling............................................... 253
Recycled Coolant............................................... 252
Severe Climates.................................................. 252
Engine Emission Control...........................160
Engine Immobilizer See: Passive Anti-Theft System..................... 73
Engine Oil Check..........................................249 Adding Engine Oil.............................................. 249
Engine Oil Dipstick
......................................249
Engine Specifications - 3.5L Duratec
.........................................................302
Drivebelt Routing............................................... 302
Engine Specifications - 3.5L Ecoboost™.................................................302
Drivebelt Routing............................................... 303
Entertainment..............................................386 AM/FM Radio...................................................... 387
Apps....................................................................... 395
Bluetooth Stereo or USB................................ 394
CD (If equipped)................................................ 393
HD Radio ™ Information (If
Available)........................................................ 390
SiriusXM® Satellite Radio (If Activated)....................................................... 388
Sources.................................................................. 387
497
Flex (TP3) , enUSA, Edition date: 201801, Second Printing Index

Headlamp Adjusting
See: Adjusting the Headlamps.................... 260
Headlamp Exit Delay....................................84
Headlamp Removal See: Removing a Headlamp........................... 261
Headrest See: Head Restraints......................................... 123
Head Restraints.............................................123
Adjusting the Head Restraint......................... 124
Tilting Head Restraints .................................... 125
Heated Seats.................................................136 Front Seats............................................................ 136
Second Row Heated Seats............................. 136
Heated Steering Wheel
................................77
Heated Windows and Mirrors....................121
Heated Exterior Mirrors...................................... 121
Heated Rear Window......................................... 121
Heating See: Climate Control.......................................... 114
Hints on Controlling the Interior Climate...........................................................118
Defogging the Side Windows in Cold Weather............................................................. 120
General Hints........................................................ 118
Quickly Cooling the Interior............................. 119
Quickly Heating the Interior............................. 119
Recommended Settings for Cooling...........120
Recommended Settings for Heating...........119
Hints on Driving With Anti-Lock Brakes.............................................................176
Home Screen
.................................................377
Hood Lock See: Opening and Closing the Hood..........245
I
Ignition Switch...............................................147
In California (U.S. Only).............................228
Information Display Control........................77
Information Displays.....................................97 General Information............................................ 97
Information Messages
................................105
Adaptive Cruise Control.................................. 106
AdvanceTrac ™.................................................... 106
Alarm...................................................................... 106
Automatic Engine Shutdown........................ 106
AWD........................................................................\
. 107
Battery and Charging System........................ 107Blind Spot Information and Cross Traffic
Alert System................................................... 108
Brake System....................................................... 108
Collision Warning System............................... 109
Doors and Locks................................................. 109
Fuel........................................................................\
.. 109
Keys and Intelligent Access............................. 110
Maintenance......................................................... 110
MyKey........................................................................\
111
Park Aid..................................................................... 111
Power Steering...................................................... 112
Seats........................................................................\
. 112
Tire Pressure Monitoring System................... 112
Towing...................................................................... 113
Traction Control.................................................... 113
Transmission......................................................... 113
Installing Child Restraints............................19 Child Seats............................................................... 19
Using Lap and Shoulder Belts......................... 20
Using Lower Anchors and Tethers for CHildren (LATCH)............................................ 25
Using Tether Straps............................................. 27
Instrument Cluster
.........................................92
Instrument Lighting Dimmer.....................84
Instrument Panel Overview........................16
Interior Lamps
.................................................85
Second Row Reading Lamps.......................... 85
Third Row Dome Lamps................................... 86
Interior Mirror...................................................90 Auto-Dimming Mirror......................................... 90
Introduction.........................................................7
J
Jump Starting the Vehicle.........................223 Connecting the Jumper Cables.................... 223
Jump Starting...................................................... 224
Preparing Your Vehicle..................................... 223
Removing the Jumper Cables....................... 224
K
Keyless Entry...................................................66 SECURICODE™ Keyless Entry
Keypad................................................................ 66
Keyless Starting
.............................................147
Ignition Modes..................................................... 148
Keys and Remote Controls.........................52
499
Flex (TP3) , enUSA, Edition date: 201801, Second Printing Index

Vehicles Sold in Canada: Using Roadside
Assistance........................................................ 222
Vehicles Sold in the United States: Getting Roadside Assistance.................................... 221
Vehicles Sold in the United States: Using Roadside Assistance.................................... 221
Roadside Emergencies...............................221
Roof Racks and Load Carriers................204
Running-In See: Breaking-In.................................................. 218
Running Out of Fuel....................................154 Adding Fuel From a Portable Fuel
Container.......................................................... 155
Filling a Portable Fuel Container.................. 154
S
Safety Canopy ™............................................49
Safety Precautions.......................................153
Scheduled Maintenance Record...........455
Scheduled Maintenance
...........................447
Seatbelt Extension.........................................41
Seatbelt Height Adjustment
......................38
Seatbelt Reminder........................................39 Belt-Minder™........................................................ 39
Seatbelts...........................................................34 Principle of Operation........................................ 34
Seatbelt Warning Lamp and Indicator Chime
..............................................................39
Conditions of operation..................................... 39
Seats
..................................................................123
Security...............................................................73
Settings............................................................415 911 Assist............................................................... 420
Ambient Lighting................................................ 427
Bluetooth............................................................... 417
Clock........................................................................\
417
Display................................................................... 428
General.................................................................. 425
Media Player......................................................... 416
Mobile Apps......................................................... 424
Navigation............................................................. 422
Phone...................................................................... 417
Radio....................................................................... 421
SiriusXM................................................................ 422
Sound...................................................................... 415
Valet Mode........................................................... 429
Vehicle................................................................... 428Voice Control.......................................................
429
Wi-Fi & Hotspot................................................. 426
Side Airbags
.....................................................48
Sitting in the Correct Position..................123
Snow Chains See: Using Snow Chains................................. 292
Spare Wheel See: Changing a Road Wheel....................... 296
Special Notices................................................12 New Vehicle Limited Warranty......................... 12
On Board Diagnostics Data Link Connector............................................................ 13
Special Instructions.............................................. 12
Special Operating Conditions Scheduled Maintenance..............................................453
Exceptions............................................................ 454
Speed Control See: Cruise Control............................................ 189
Stability Control
............................................178
Principle of Operation....................................... 178
Starter Switch See: Ignition Switch............................................ 147
Starting a Gasoline Engine.......................148 Automatic Engine Shutdown........................ 150
Failure to Start..................................................... 150
Guarding Against Exhaust Fumes.................151
Important Ventilating Information................151
Stopping the Engine When Your Vehicle is Moving................................................................. 151
Stopping the Engine When Your Vehicle is Stationary......................................................... 150
Vehicles with an Ignition Key......................... 148
Vehicles with Keyless Start............................. 149
Starting and Stopping the Engine..........147 General Information........................................... 147
Steering............................................................201 Electric Power Steering.................................... 201
Steering Wheel................................................75
Storage Compartments
.............................145
Sunroof See: Moonroof...................................................... 90
Sun Visors.........................................................90 Illuminated Vanity Mirror.................................. 90
Supplementary Restraints System.........44 Principle of Operation........................................ 44
Symbols Glossary
.............................................7
SYNC™ 3........................................................365
General Information......................................... 365
502
Flex (TP3) , enUSA, Edition date: 201801, Second Printing Index

System Settings.................................................
354
What's Playing?................................................. 349
Using SYNC™ With Your Phone.............331 Accessing Features Through the Phone
Menu.................................................................. 335
Accessing Your Phone Settings................... 339
Making a Call....................................................... 334
Pairing a Cell Phone for the First Time.................................................................... 331
Pairing Subsequent Cell Phones.................332
Phone Options during an Active Call.........334
Phone Voice Commands................................ 332
Receiving Calls.................................................... 334
System Settings.................................................. 341
Text Messaging................................................... 337
Using Traction Control.................................177 Switching the System Off................................ 177
System Indicator Lights and Messages........................................................... 177
Using a Switch...................................................... 177
Using the Information Display Controls.............................................................. 177
Using Voice Recognition...........................328 Audio Voice Commands................................. 380
Climate Voice Commands.............................. 381
Initiating a Voice Session................................ 328
Mobile App Voice Commands...................... 384
Navigation Voice Commands....................... 383
Phone Voice Commands................................. 381
SiriusXM Traffic and Travel Link Voice Commands..................................................... 384
System Interaction and Feedback..............329
Voice Settings Commands............................ 385
Utilizing the Mediation/Arbitration Program (Canada Only)........................230
V
Vehicle Care...................................................268 General Information......................................... 268
Vehicle Certification Label.......................307
Vehicle Identification Number
...............306
Vehicle Storage.............................................273
Battery.................................................................... 274
Body........................................................................\
273
Brakes..................................................................... 274
Cooling system.................................................... 274
Engine..................................................................... 274Fuel system..........................................................
274
General................................................................... 273
Miscellaneous...................................................... 274
Removing Vehicle From Storage.................. 274
Tires........................................................................\
. 274
Ventilation See: Climate Control.......................................... 114
VIN See: Vehicle Identification Number...........306
Voice Control
....................................................77
W
Warning Lamps and Indicators.................93 Adaptive Cruise Control..................................... 93
Airbag Readiness................................................. 94
Anti-Lock Braking System................................ 94
Battery ...................................................................... 94
Brake System......................................................... 94
Charging System.................................................. 94
Cruise Control........................................................ 94
Directional Indicator........................................... 94
Door Ajar................................................................. 94
Engine Coolant Temperature.......................... 94
Engine Oil................................................................ 95
Fasten Seatbelt Warning Lamp..................... 95
Front Airbag........................................................... 95
Front Fog Lamps.................................................. 95
Head Up Display................................................... 95
High Beam.............................................................. 95
Liftgate Ajar............................................................ 95
Low Fuel Level....................................................... 95
Low Tire Pressure Warning............................... 95
Low Washer Fluid................................................. 95
Parking Lamps...................................................... 95
Powertrain Malfunction/Reduced Power.................................................................. 96
Service Engine Soon........................................... 96
Stability Control................................................... 96
Stability Control Off............................................ 96
Washer Fluid Check.....................................257
Washers See: Cleaning the Exterior.............................. 268
See: Wipers and Washers................................. 80
Waxing.............................................................270
Wheel Nuts See: Changing a Road Wheel....................... 296
504
Flex (TP3) , enUSA, Edition date: 201801, Second Printing Index