2021 FORD TRANSIT coolant temperature

How Fail-Safe Cooling Works
If the engine begins to overheat,
the coolant temperature gauge
moves toward the red zone:
A warning lamp illuminates and
a message may appear in the
information display.
If the engine reaches a preset
over-temperature condition, the engine
automatically switches to alternating
cylinder operation. Each disabled cylinder
acts as an air pump and cools the engine.
When this occurs, your vehicle still
operates, however:
• Engine power is limited.
• The air conditioning system turns off.
Continued operation increases the engine
temperature, causing the engine to
completely shut down. Your steering and
braking effort increases in this situation.
When the engine temperature cools, you
can re-start the engine. Have your vehicle
checked as soon as possible to minimize
engine damage.
When Fail-Safe Mode Is Activated WARNING: Fail-safe mode is for
use during emergencies only. Operate
your vehicle in fail-safe mode only as
long as necessary to bring your vehicle
to rest in a safe location and seek
immediate repairs. When in fail-safe
mode, your vehicle will have limited
power, will not be able to maintain
high-speed operation, and may
completely shut down without warning,
potentially losing engine power, power
steering assist, and power brake assist,
which may increase the possibility of a
crash resulting in serious injury. WARNING:
Do not remove the
coolant reservoir cap when the engine is
on or the cooling system is hot. Wait 10
minutes for the cooling system to cool
down. Cover the coolant reservoir cap
with a thick cloth to prevent the
possibility of scalding and slowly remove
the cap. Failure to follow this instruction
could result in personal injury.
Your vehicle has limited engine power
when in the fail-safe mode, drive your
vehicle with caution. Your vehicle does not
maintain high-speed operation and the
engine may operate poorly.
Remember that the engine is capable of
automatically shutting down to prevent
engine damage. In this situation:
1. Pull off the road as soon as safely possible and switch the engine off.
2. If you are a member of a roadside assistance program, we recommend
that you contact your roadside
assistance service provider.
3. If this is not possible, wait for a short period of time for the engine to cool.
4. Check the coolant level. If the coolant level is at or below the minimum mark,
add prediluted coolant immediately.
5. When the engine temperature cools, you can re-start the engine. Have your
vehicle checked as soon as possible to
minimize engine damage.
Note: Driving your vehicle without repair
increases the chance of engine damage.
288
2021 Transit (TTH) Canada/United States of America, MK3J 19A321 AA enUSA, Edition date: 202010, Second-Printing Maintenance

Engine Coolant Temperature
Management (If Equipped)
WARNING:
To reduce the risk of
crash and injury, be prepared that the
vehicle speed may reduce and the
vehicle may not be able to accelerate
with full power until the coolant
temperature reduces.
If you tow a trailer with your vehicle, the
engine may temporarily reach a higher
temperature during severe operating
conditions, for example ascending a long
or steep grade in high ambient
temperatures.
At this time, you may notice the coolant
temperature gauge moves toward the red
zone and a message may appear in the
information display.
You may notice a reduction in vehicle
speed caused by reduced engine power in
order to manage the engine coolant
temperature. Your vehicle may enter this
mode if certain high-temperature and
high-load conditions take place. The
amount of speed reduction depends on
vehicle loading, grade and ambient
temperature. If this occurs, there is no
need to stop your vehicle. You can
continue to drive.
The air conditioning may automatically
turn on and off during severe operating
conditions to protect the engine from
overheating. When the coolant
temperature decreases to the normal
operating temperature, the air conditioning
turns on.
If the coolant temperature gauge moves
fully into the red zone, or if the coolant
temperature warning or service engine
soon messages appear in your information
display, do the following: 1. Stop your vehicle as soon as it is safe
to do so. Fully apply the parking brake,
shift into park (P) or neutral (N).
2. Leave the engine running until the coolant temperature gauge needle
returns to the normal position. If the
temperature does not drop after
several minutes, follow the remaining
steps.
3. Switch the engine off and wait for it to
cool. Check the coolant level.
4. If the coolant level is at or below the minimum mark, add prediluted coolant
immediately.
5. If the coolant level is normal, restart the engine and continue.
AUTOMATIC TRANSMISSION
FLUID CHECK
The automatic transmission does not have
a transmission fluid dipstick.
Have an authorized dealer check and
change the transmission fluid at the
correct service interval. Your transmission
does not consume fluid. However, if the
transmission slips, shifts slowly or if you
notice a sign of leaking fluid, contact an
authorized dealer.
Do not use supplemental transmission
fluid additives, treatments or cleaning
agents. The use of these materials may
affect transmission operation and result
in damage to internal transmission
components.
289
2021 Transit (TTH) Canada/United States of America, MK3J 19A321 AA enUSA, Edition date: 202010, Second-Printing Maintenance

Body
•
Wash your vehicle thoroughly to
remove dirt, grease, oil, tar or mud from
exterior surfaces, rear-wheel housing
and the underside of front fenders.
• Periodically wash your vehicle if it is
stored in exposed locations.
• Touch-up exposed or primed metal to
prevent rust.
• Cover chrome and stainless steel parts
with a thick coat of auto wax to prevent
discoloration. Re-wax as necessary
when you wash your vehicle.
• Lubricate all hood, door and luggage
compartment hinges and latches with
a light grade oil.
• Cover interior trim to prevent fading.
• Keep all rubber parts free from oil and
solvents.
Engine
• Change the engine oil and filter prior to
storage because used engine oil
contains contaminates which may
cause engine damage.
• Start the engine every 15 days for a
minimum of 15 minutes. Run at fast idle
with the climate controls set to defrost
until the engine reaches normal
operating temperature.
• With your foot on the brake, shift
through all the gears while the engine
is running.
• We recommend that you change the
engine oil before you use your vehicle
again.
Fuel system
• Fill the fuel tank with high-quality fuel
until the first automatic shutoff of the
fuel pump nozzle. Cooling system
•
Protect against freezing temperatures.
• When removing your vehicle from
storage, check coolant fluid level.
Confirm that there are no cooling
system leaks and that fluid is at the
recommended level.
Battery
• Check and recharge as necessary. Keep
connections clean.
• If storing your vehicle for more than 30
days without recharging the battery,
we recommend that you disconnect
the battery cables to maintain battery
charge for quick starting.
Note: It is necessary to reset memory
features if battery cables are disconnected.
Brakes
• Make sure the brakes and parking brake
release fully.
Tires
• Maintain recommended air pressure.
Miscellaneous
• Make sure all linkages, cables, levers
and pins under your vehicle are covered
with grease to prevent rust.
• Move vehicles at least 25 ft (7.5 m)
every 15 days to lubricate working parts
and prevent corrosion.
Removing Vehicle From Storage
When your vehicle is ready to come out of
storage, do the following:
• Wash your vehicle to remove any dirt
or grease film build-up on window
surfaces.
• Check windshield wipers for any
deterioration.
309
2021 Transit (TTH) Canada/United States of America, MK3J 19A321 AA enUSA, Edition date: 202010, Second-Printing Vehicle Care

Selectable Drive Modes Information
Messages.......................................................... 227
Driver Alert......................................................207
Driver Alert System Display............................ 207
Driver Alert System Messages...................... 208
Driver Alert System Warnings....................... 207
Switching Driver Alert On and Off..............208
Driver and Passenger Airbags.....................51 Children and Airbags.......................................... 56
Passenger Airbag On and Off Switch ...........51
Proper Driver and Front Passenger Seating Adjustment........................................................ 56
Driving Aids....................................................206
Driving Hints
..................................................246
Driving Through Water...............................247
DRL See: Daytime Running Lamps....................... 102
E
Eco......................................................................219 Eco Mode............................................................... 219
Efficient Drive Mode.......................................... 219
Economical Driving
.....................................246
Electric Parking Brake Audible Warning.........................................................178
Electric Parking Brake..................................177 Electric Parking Brake –
Troubleshooting............................................. 178
Electric Parking Brake – Troubleshooting.........................................178
Electric Parking Brake – Information Messages.......................................................... 178
Electric Parking Brake – Warning Lamps................................................................ 178
Electromagnetic Compatibility
...............461
Emergency Call Limitations.......................62
Emergency Call Requirements..................61
Emergency Call System Data
.....................17
Emergency Exit - M2 Bus..........................250
Emission Law.................................................158 Noise Emissions Warranty, Prohibited
Tampering Acts and Maintenance..........159
Tampering With a Noise Control System............................................................... 158
Enabling Remote Start...............................120 End User License Agreement
.................464
VEHICLE SOFTWARE END USER LICENSE
AGREEMENT (EULA) ................................ 464
Engine Block Heater
....................................146
Using the Engine Block Heater....................... 147
Engine Coolant Check...............................285 Adding Coolant.................................................. 286
Coolant Change.................................................. 287
Engine Coolant Temperature Management.................................................. 289
Fail-Safe Cooling................................................ 287
Recycled Coolant............................................... 287
Severe Climates.................................................. 287
Engine Cooling Fan.....................................285
Engine Emission Control...........................158
Engine Immobilizer See: Passive Anti-Theft System - Vehicles
With: Passive Anti-Theft System
(PATS)................................................................. 89
Engine Oil Check..........................................282 Adding Engine Oil.............................................. 282
Engine Oil Pressure Warning Lamp............283
Engine Oil Dipstick - 3.5L Duratec.........282
Engine Oil Dipstick - 3.5L Ecoboost™.................................................282
Engine Specifications - 3.5L Duratec.........................................................352
Engine Specifications - 3.5L Ecoboost™.................................................353
Entertainment..............................................408 AM/FM Radio..................................................... 409
Apps........................................................................\
. 417
CD........................................................................\
..... 415
HD Radio ™ Information (If
Available).......................................................... 412
SiriusXM® Satellite Radio (If Activated)........................................................ 410
Sources................................................................. 409
Stereo or USB...................................................... 416
Supported Media Players, Formats and Metadata Information.................................. 417
USB Ports............................................................... 417
Environment.....................................................18
Essential Towing Checks..........................239 Before Towing a Trailer.................................... 244
Launching or Retrieving a Boat or Personal Water Craft (PWC)...................................... 245
Safety Chains...................................................... 240
495
2021 Transit (TTH) Canada/United States of America, MK3J 19A321 AA enUSA, Edition date: 202010, Second-Printing Index

Tow Hitch..............................................................
240
Trailer Brakes....................................................... 240
Trailer Lamps....................................................... 244
Trailer Towing Connector................................ 239
When Towing a Trailer..................................... 244
Event Data.........................................................15
Export Unique Options.............................460
Exterior Mirrors
..............................................108
Fold-Away Exterior Mirrors............................. 109
Power Exterior Mirrors...................................... 108
Power Folding Mirrors....................................... 108
F
Fan See: Engine Cooling Fan................................. 285
Fastening the Seatbelts..............................44 Seatbelt Locking Modes.................................... 45
Using Seatbelts During Pregnancy................44
Flat Tire See: Changing a Road Wheel....................... 339
Flat Tire Inflation See: Tire Sealant and Inflator Kit.................. 312
Floor Mats
.......................................................247
Fog Lamps - Front See: Front Fog Lamps...................................... 104
Ford Credit.....................................................256 US Only.................................................................. 256
Ford Protect..................................................444 Ford Protect Extended Service Plan
(CANADA ONLY).......................................... 445
Ford Protect Extended Service Plans (U.S. Only)................................................................. 444
Front Fog Lamps
..........................................104
Front Fog Lamp Indicator................................ 105
Switching the Front Fog Lamps On or Off....................................................................... 104
Front Parking Aid...........................................187 Front Parking Aid Information
Messages.......................................................... 189
Object Distance Indicator............................... 188
Front View Camera.....................................225 Using the Front View Camera....................... 226
Front Wiper Blades See: Changing the Front Wiper Blades......295
Fuel and Refueling........................................151
Fuel Filler Funnel Location........................153
Fuel Filter
........................................................294 Fuel Quality - E85..........................................151
Choosing the Right Fuel - Flex Fuel
Vehicles.............................................................. 151
Switching Between E85 and Gasoline............................................................. 152
Fuel Quality - Gasoline...............................153 Choosing the Right Fuel................................... 153
Fuel Shutoff
..................................................250
Ignition Switch.................................................... 250
Keyless Starting................................................... 251
Fuse Box Locations
.....................................263
Body Control Module....................................... 263
Driver Compartment Fuse Box..................... 263
Engine Compartment Fuse Box................... 263
Passenger Compartment Fuse Box............263
Pre-fuse Box........................................................ 263
Fuses................................................................263
Fuse Specification Chart..........................264 Body Control Module......................................... 271
Driver Compartment Fuse Box..................... 267
Engine Compartment Fuse Box................... 264
Passenger Compartment Fuse Box............273
Pre-fuse Box......................................................... 275
G
Gauges..............................................................110 Automatic Transmission Position
Indicators............................................................ 111
Engine Coolant Temperature Gauge.............111
Fuel Gauge.............................................................. 111
Information Display............................................ 110
Instrument Cluster.............................................. 110
Speedometer......................................................... 111
Tachometer........................................................... 110
Gearbox See: Transmission............................................... 161
General Information on Radio Frequencies...................................................63
General Maintenance Information
.......446
Multi-point Inspection..................................... 448
Owner Checks and Services.......................... 447
Protecting Your Investment.......................... 446
Why Maintain Your Vehicle?......................... 446
Why Maintain Your Vehicle at Your Dealership?.................................................... 446
Getting Assistance Outside the U.S. and Canada.........................................................259
496
2021 Transit (TTH) Canada/United States of America, MK3J 19A321 AA enUSA, Edition date: 202010, Second-Printing Index