2021 FORD TRANSIT coolant reservoir

UNDER HOOD OVERVIEW - 3.5L DURATEC
Air filter assembly.
A
Engine oil dipstick. See Engine Oil Dipstick (page 282).
B
Brake fluid reservoir.
See Brake Fluid Check (page 290).
C
Engine coolant reservoir. See
Engine Coolant Check (page 285).
D
Engine compartment fuse box. See
Fuses (page 263).
E
Battery connection. See
Jump Starting the Vehicle (page 251).
F
Engine oil filler cap.
See Engine Oil Check (page 282).
G
Washer fluid reservoir.
See Washer Fluid Check (page 294).
H
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2021 Transit (TTH) Canada/United States of America, MK3J 19A321 AA enUSA, Edition date: 202010, Second-Printing MaintenanceABDC
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UNDER HOOD OVERVIEW - 3.5L ECOBOOST™
Air filter assembly.
A
Engine oil dipstick. See Engine Oil Dipstick (page 282).
B
Brake fluid reservoir.
See Brake Fluid Check (page 290).
C
Engine coolant reservoir. See
Engine Coolant Check (page 285).
D
Engine compartment fuse box. See
Fuses (page 263).
E
Battery connection. See
Jump Starting the Vehicle (page 251).
F
Engine oil filler cap.
See Engine Oil Check (page 282).
G
Washer fluid reservoir.
See Washer Fluid Check (page 294).
H
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2021 Transit (TTH) Canada/United States of America, MK3J 19A321 AA enUSA, Edition date: 202010, Second-Printing MaintenanceA
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2. Clean the area around the air tube to
air filter cover connection to prevent
debris from entering the system and
then loosen the bolt on the air tube
clamp so the clamp is no longer snug
to the air tube. It is not necessary to
completely remove the clamp. Pull the
air tube off from the air filter cover.
3. Release the clamps that secure the air
filter cover to the air filter housing. 4.
Carefully lift the air filter housing cover.
Remove the air filter element from the
air filter housing.
5. Install a new air filter element.
6. Replace the air filter housing cover. Engage the clamps that secure the air
filter housing cover to the air filter
housing. Be careful not to crimp the
filter element edges between the air
filter housing and cover. Make sure
that the tabs on the edge are correctly
aligned into the slots.
7. Slip the air tube onto the air filter cover
and snugly tighten the bolt on the air
tube clamp, but do not overtighten.
8. Reconnect the intake air temperature sensor electrical connector to the
outlet tube. Make sure the locking tab
on the connector is in the locked
position. ENGINE COOLING FAN WARNING: Keep your hands and
clothing clear of the engine cooling fan.
Under certain conditions, the engine
cooling fan may continue to run for several
minutes after you switch your vehicle off.
ENGINE COOLANT CHECK 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. WARNING:
Do not put coolant in
the windshield washer reservoir. If
sprayed on the windshield, coolant could
make it difficult to see through the
windshield. WARNING:
To reduce the risk of
personal injury, make sure the engine is
cool before unscrewing the coolant
pressure relief cap. The cooling system
is under pressure. Steam and hot liquid
can come out forcefully when you loosen
the cap slightly. WARNING:
Do not add coolant
further than the MAX mark.
When the engine is cold, check the
concentration and level of the coolant at
the intervals listed in the scheduled
maintenance information. See Scheduled
Maintenance
(page 446).
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2021 Transit (TTH) Canada/United States of America, MK3J 19A321 AA enUSA, Edition date: 202010, Second-Printing MaintenanceE174669

Note:
Make sure that the coolant level is
between the MIN and the MAX marks on
the coolant reservoir.
Note: Coolant expands when it is hot. The
level may extend beyond the
MAX mark.
Maintain coolant concentration within
48% to 50%, which equates to a freeze
point between
-29°F (-34°C) and -35°F
(-37°C). Coolant concentration should be
checked using a refractometer. We do not
recommend the use of hydrometers or
coolant test strips for measuring coolant
concentration.
Adding Coolant WARNING:
Do not add engine
coolant when the engine is on or the
cooling system is hot. Failure to follow
this instruction could result in personal
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. WARNING:
Do not put coolant in
the windshield washer reservoir. If
sprayed on the windshield, coolant could
make it difficult to see through the
windshield.
Note: Do not use stop leak pellets, cooling
system sealants, or non-specified additives
as they can cause damage to the engine
cooling or heating systems. Resulting
component damage may not be covered by
the vehicle Warranty.
Note: Automotive fluids are not
interchangeable. It is very important to use prediluted
coolant approved to the correct
specification in order to avoid plugging the
small passageways in the engine cooling
system. Do not mix different colors or types
of coolant in your vehicle. Mixing of engine
coolants or using an incorrect coolant may
harm the engine or cooling system
components and may not be covered by
the vehicle Warranty.
Note:
If prediluted coolant is not available,
use the approved concentrated coolant
diluting it to 50/50 with distilled water.
Using water that has not been deionised
may contribute to deposit formation,
corrosion and plugging of the small cooling
system passageways.
Note: Coolants marketed for all makes and
models may not be approved to our
specifications and may cause damage to
the cooling system. Resulting component
damage may not be covered by the vehicle
Warranty.
If the coolant level is at or below the
minimum mark, add prediluted coolant
immediately.
To top up the coolant level do the
following:
1. Unscrew the cap slowly. Any pressure escapes as you unscrew the cap.
2. Add prediluted coolant approved to the correct specification.
3. Add enough prediluted coolant to reach the correct level.
4. Replace the coolant reservoir cap. Turn
the cap clockwise until it contacts the
hard stop.
5. Check the coolant level in the coolant reservoir the next few times you drive
your vehicle. If necessary, add enough
prediluted engine coolant to bring the
coolant level to the correct level.
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2021 Transit (TTH) Canada/United States of America, MK3J 19A321 AA enUSA, Edition date: 202010, Second-Printing Maintenance

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.
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2021 Transit (TTH) Canada/United States of America, MK3J 19A321 AA enUSA, Edition date: 202010, Second-Printing Maintenance

Engine Coolant
Capacities
Quantity
Variant
16.4 qt (15.5 L)
Vehicles with auxiliary heater.
14.9 qt (14.1 L)
Vehicles without auxiliary heater.
Materials Specification
Name
WSS-M97B57-A2
Motorcraft® Yellow Prediluted Antifreeze/
Coolant(U.S.)
Motorcraft® Yellow Prediluted Antifreeze/Coolant
/ Antigel/liquide de refroidissement prédilué jaune
Motorcraft®(Canada)
VC-13DL-G(U.S.)
CVC-13DL-G(Canada)
Fuel Tank
Capacities Quantity
Variant
25.1 gal (95 L)
Vehicles with standard fuel tank.
30.5 gal (115.4 L)
Vehicles with larger fuel tank.
Washer Reservoir
Capacities Quantity
Variant
4.8 qt (4.5 L)
All.
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2021 Transit (TTH) Canada/United States of America, MK3J 19A321 AA enUSA, Edition date: 202010, Second-Printing Capacities and Specifications

Check every six months
Battery connections. Clean if necessary.
Body and door drain holes for obstruc-
tions. Clean if necessary.
Cooling system fluid level and coolant
strength.
Door weatherstrips for wear. Lubricate if
necessary.
Front door check arms for correct opera-
tion.
Hinges, latches and outside locks for
correct operation. Lubricate if necessary.
Parking brake for correct operation.
Seatbelts and seat latches for wear and
function.
Safety warning lamps (brake, ABS, airbag
and seatbelt) for operation.
Washer spray and wiper operation. Clean
or replace blades as necessary.
Multi-point Inspection
In order to keep your vehicle running
correctly, 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 correctly. Multi-point inspection
Accessory drive belt(s).
Battery performance.
Engine air filter. Multi-point inspection
Exhaust system.
Exterior lamps and hazard warning
system operation.
Fluid levels *
; fill if necessary.
For oil and fluid leaks.
Horn operation.
Radiator, cooler, heater and A/C hoses.
Suspension component for leaks or
damage.
Steering and linkage.
Tires (including spare) for wear and
correct pressure **
.
Windshield for cracks, chips or pits.
Washer spray and wiper operation.
* Brake, coolant recovery reservoir,
automatic transmission, power steering (if
equipped with hydraulic power assist
steering) 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. Your checklist gives you
immediate feedback on the overall
condition of your vehicle.
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California Proposition 65 - United States
of America..................................................458
Capacities and Specifications - 3.5L Duratec.........................................................358
Air Conditioning System................................. 358
Brake System....................................................... 361
Engine.................................................................... 359
Engine Coolant................................................... 360
Fuel Tank................................................................ 361
Grease.................................................................... 362
Locks...................................................................... 362
Rear Axle............................................................... 362
Washer Reservoir................................................ 361
Capacities and Specifications - 3.5L Ecoboost™.................................................363
Air Conditioning System................................. 363
Brake System....................................................... 367
Engine.................................................................... 364
Engine Coolant................................................... 366
Fuel Tank.............................................................. 366
Grease....................................................................368
Locks...................................................................... 368
Rear Axle............................................................... 367
Washer Reservoir............................................... 366
Capacities and Specifications................352
Cargo Lamps.................................................106 Switching the Cargo Lamps Off................... 106
Switching the Cargo Lamps On.................... 106
Car Wash See: Cleaning the Exterior.............................. 303
Catalytic Converter - 3.5L Duratec/3.5L Ecoboost™..................................................159
On-Board Diagnostics System..................... 160
Changing a Bulb..........................................296 Front Clearance Lamp..................................... 298
Headlamp............................................................ 296
High Mounted Stoplamps.............................. 299
Interior Lamp....................................................... 299
License Plate Lamp.......................................... 299
Reading Lamps.................................................. 300
Rear Lamps......................................................... 298
Side Direction Indicator................................... 298
Sun Visor Mirror Lamp.................................... 300
Changing a Fuse
...........................................276
Fuses....................................................................... 276Changing a Road Wheel...........................339
Dissimilar Spare Wheel and Tire Assembly
Information..................................................... 340
Front Jacking Points......................................... 345
Installing a Road Wheel.................................. 348
Locking Lug Nuts................................................ 341
Rear Jacking Points........................................... 345
Removing a Road Wheel................................ 348
Removing a Wheel Trim.................................. 346
Stowing the Wheel and Vehicle Jack.........350
Vehicle Jack......................................................... 344
Vehicles With a Spare Wheel......................... 341
Changing the 12V Battery.........................290 Removing the Battery....................................... 291
Replacing the Battery....................................... 292
Changing the Engine Air Filter................284
Changing the Engine Oil and Oil Filter...............................................................283
Engine Lubrication for Severe Service Operation......................................................... 283
Changing the Front Wiper Blades
.........295
Changing the Vehicle Wi-Fi Hotspot Name or Password...................................375
Checking MyKey System Status
...............74
Checking the Wiper Blades.....................294
Child Restraint and Seatbelt Maintenance.................................................49
Child Restraint Positioning.........................39
Child Safety
.......................................................19
General Information............................................. 19
Child Safety Locks..........................................41 Left-Hand Side...................................................... 42
Right-Hand Side................................................... 42
Cigar Lighter
...................................................140
Cleaning Products.......................................302
Cleaning the Engine
...................................304
Cleaning the Exterior..................................303 Body Paintwork Preservation....................... 304
Cleaning the Chrome Trim............................. 303
Cleaning the Headlamps................................ 303
Cleaning the Rear Window............................ 303
Sliding Door Tracks........................................... 304
Cleaning the Instrument Panel and Instrument Cluster Lens
.........................307
Cleaning the Interior...................................305 Fabric, Carpets, Cloth Seats, Headliners
and Floor Mats.............................................. 305
493
2021 Transit (TTH) Canada/United States of America, MK3J 19A321 AA enUSA, Edition date: 202010, Second-Printing Index