E146046
Engine coolant reservoir capA
Engine oil filler capB
Engine air cleaner coverC
Brake fluid reservoir capD
Power distribution boxE
Inverter system controllerF
Inverter system controller coolant reservoir capG
Engine oil dipstickH
Windshield washer fluid reservoir capI
243Maintenance
If you select the EV Now mode while the
vehicle is in the oil maintenance mode, the
oil maintenance mode will be suspended
for as long as you continue driving the
vehicle. The oil maintenance mode will
resume the next time you start the vehicle.
Changing the engine oil and resetting the
oil life monitoring system will suspend the
oil maintenance mode.
OIL CHANGE INDICATOR
RESET To reset the oil monitoring system after an
oil change, See General Information
(page 86).
ENGINE COOLANT CHECK Engine Coolant and Inverter
System Controller Coolant Your vehicle is equipped with two separate
cooling systems. One is for cooling the
engine and one is for cooling the inverter
system controller that is specific to the
hybrid operating system. The two systems
operate similarly, with the inverter system
controller cooling system generally
operating at a lower temperature and
pressure.
Checking the Engine Coolant When the engine is cold, check the
concentration and level of the engine
coolant at the intervals listed in the
scheduled maintenance information. See
Scheduled Maintenance (page 444).
Note: Make sure that the level is between
the MIN and MAX marks on the engine
coolant reservoir.
Note: Coolant expands when it is hot. The
level may extend beyond the MAX mark. Note: If the level is at the MIN mark, below
the MIN mark, or empty, add prediluted
coolant immediately. See Adding Engine
Coolant in this chapter.
The coolant concentration should be
maintained within 48% to 50%, which
equates to a freeze point between -30°F
(-34°C) and -34°F (-37°C).
Note: For best results, coolant
concentration should be tested with a
refractometer such as Rotunda tool
300-ROB75240 available from your dealer.
Ford does not recommend the use of
hydrometers or coolant test strips for
measuring coolant concentrations.
Note: Automotive fluids are not
interchangeable. Do not use engine coolant
or antifreeze or windshield washer fluid
outside of its specified function and vehicle
location.
Checking the Inverter System
Controller Coolant When the engine is cold, check the
concentration and level of the inverter
system controller coolant at the intervals
listed in the scheduled maintenance
information. See Scheduled
Maintenance (page 444).
Note: Make sure that the level is between
the MIN and MAX marks on the inverter
system controller coolant reservoir.
Note: Coolant expands when it is hot. The
level may extend beyond the MAX mark.
Note: If the level is at the MIN mark, below
the MIN mark, or empty, add prediluted
coolant immediately. See Adding Inverter
System Controller Coolant in this chapter.
The coolant concentration should be
maintained within 48% to 50%, which
equates to a freeze point between -30°F
(-34°C) and -34°F (-37°C).
245Maintenance
• Do not use alcohol, methanol, brine or
any engine coolants mixed with alcohol
or methanol antifreeze (coolant).
Alcohol and other liquids can cause
engine damage from overheating or
freezing.
• Do not add extra inhibitors or additives
to the coolant. These can be harmful
and compromise the corrosion
protection of the engine coolant.
Adding Engine Coolant 1. Unscrew the engine coolant reservoir
cap slowly. Any pressure will escape
as you unscrew the cap.
2. Use a funnel to add prediluted engine
coolant to the engine coolant reservoir.
Make sure that the level is between the
MIN and MAX marks on the engine
coolant reservoir. Use prediluted engine
coolant meeting the Ford specification.
See Capacities and Specifications
(page 293).
3. Close the engine coolant reservoir cap.
Whenever you add coolant, check the
coolant level in the engine coolant reservoir
the next few times you drive the vehicle. If
necessary, add enough prediluted engine
coolant to bring the engine coolant level
to the proper level.
Adding Inverter System Controller
Coolant 1. Open the inverter system controller
coolant reservoir cap.
2. Use a funnel to add prediluted coolant
to the inverter system controller
coolant reservoir. Make sure that the
level is between the MIN and MAX
marks on the inverter system controller
coolant reservoir. Use prediluted
coolant meeting the Ford specification.
See Capacities and Specifications
(page 293). 3. Close the inverter system controller
coolant reservoir cap.
Whenever you add coolant, check the
coolant level in the inverter system
controller coolant reservoir the next few
times you drive the vehicle. If necessary,
add enough prediluted coolant to bring the
inverter system controller coolant level to
the proper level.
Recycled Engine Coolant Ford Motor Company does not recommend
the use of recycled engine coolant since a
Ford-approved recycling process is not yet
available.
Used engine coolant should be disposed
of in an appropriate manner. Follow your
community’s regulations and standards
for recycling and disposing of automotive
fluids.
Severe Climates If you drive in extremely cold climates:
• It may be necessary to have an
authorized Ford dealer increase the
coolant concentration above 50%.
• A coolant concentration of 60% will
provide improved freeze point
protection. Engine coolant
concentrations above 60% will
decrease the overheat protection
characteristics of the engine coolant
and may cause engine damage.
If you drive in extremely hot climates:
• It may be necessary to have an
authorized Ford dealer decrease the
coolant concentration to 40%.
• A coolant concentration of 40% will
provide improved overheat protection.
Engine coolant concentrations below
40% will decrease the corrosion/freeze
protection characteristics of the engine
coolant and may cause engine
damage.
247Maintenance
Vehicles driven year-round in non-extreme
climates should use prediluted coolant
meeting the Ford specification for
optimum cooling system and engine
protection.
What You Should Know About Fail-
Safe Cooling If the engine coolant supply is depleted,
this feature allows the vehicle to be driven
temporarily before incremental component
damage is incurred. The “fail-safe”
distance depends on ambient
temperatures, vehicle load and terrain.
How Fail-Safe Cooling Works
If the engine begins to overheat, the engine
coolant temperature gauge will move to
the red (hot) area and:
The coolant temperature
warning light will illuminate.
The service engine soon
indicator will illuminate.
If the engine reaches a preset
over-temperature condition, the engine
will automatically switch to alternating
cylinder operation. Each disabled cylinder
acts as an air pump and cools the engine.
When this occurs the vehicle will still
operate. However:
• The engine power will be limited.
• The air conditioning system will be
disabled.
Continued operation will increase the
engine temperature and the engine will
completely shut down, causing steering
and braking effort to increase.
Once the engine temperature cools, the
engine can be re-started. Take your vehicle
to an authorized dealer as soon as possible
to minimize engine damage. When Fail-Safe Mode Is Activated
WARNINGS
Fail-safe mode is for use during
emergencies only. Operate the
vehicle in fail-safe mode only as long
as necessary to bring the vehicle to rest in
a safe location and seek immediate repairs.
When in fail-safe mode, the 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.
Never remove the coolant reservoir
cap while the engine is running or hot.
Note: Driving the vehicle without repairing
the engine problem increases the chance of
engine damage. Take your vehicle to an
authorized dealer as soon as possible.
You have limited engine power when in the
fail-safe mode, so drive the vehicle with
caution. The vehicle will not be able to
maintain high-speed operation and the
engine will run rough. Remember that the
engine is capable of completely shutting
down automatically to prevent engine
damage, therefore:
1. Pull off the road as soon as safely
possible and turn off the engine.
2. Arrange for the vehicle to be taken to
an authorized dealer.
3. If this is not possible, wait a short
period for the engine to cool.
4. Check the coolant level and replenish
if low.
5. Re-start the engine and take your
vehicle to an authorized dealer.
248Maintenance
TECHNICAL SPECIFICATIONS Ford part number /
Ford specificationFord part name or
equivalentCapacityItem
PM-1-C /Motorcraft™ DOT 4
LV High Perform-
ance Brake FluidBetween MIN and
MAX on reservoirBrake fluid 1
WSS-M6C65-A2 and
ISO 4925 Class 6
Motorcraft XL-5
(aerosol) and/or
CRCSL3151ESB /Multi-Purpose
Grease (lithium
grease)Not applicableHinges, latches,
striker plates and
rotors, seat tracks,
fuel filler door
hinge and spring /ESB-M1C93-B
XL-1 /NoneMotorcraft Penet-
rating and Lock
LubricantNot applicableLock cylinder
XT-10-QLV MERCON
LVMotorcraft
MERCON™ LV ATF5.7 qt (5.4L)Automatic trans-
mission fluid 2, 3
WSS-M2C945-AMotorcraft SAE 5W-
20 or equivalent4.5 qt (4.3L)
Engine oil 4, 5
VC-3DIL-B (U.S.)Motorcraft Orange
Antifreeze / Coolant
Prediluted8.8 qt (8.3L)Energi engine
coolant 6
CVC-3DIL-B
(Canada)
8.2 qt (8.2L)Hybrid engine
coolant 6
/WSS-M97B44-D2
1 qt (1.1L)Inverter system
controller coolant 6
ZC-32-A (U.S.)Motorcraft Premium
Windshield Washer
Concentrate (U.S.)Fill as requiredWindshield washer
fluid CXC-37-(A, B, D, and
F) (Canada)
Premium Quality
Windshield Washer
Fluid (Canada) /WSB-M8B16-A2
Not applicableNot applicable14 gal (53L)Energi fuel tank
13.5 gal (51.1L)Hybrid fuel tank
YN-19 (US)Motorcraft R-134a
Refrigerant1.25 lb (0.567 kg)A/C Refrigerant 7
CYR-16-R (Canada)
297Capacities and Specifications
Check Every 12 Months (Fusion Energi
Plug-in Hybrid Only)
Inspect the engine oil filter for signs of
damage such as rust, paint blistering,
scratches or dents. If any of these
conditions are present, replace the filter.
See Normal Scheduled Maintenance
(page 448). 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.Multi-point inspection
Hazard warning system operationAccessory drive belt(s)
Horn operationBattery performance
Radiator, cooler, heater and A/C hosesEngine air filter
Suspension components for leaks or
damageExhaust system
Steering and linkageExterior lamps operation
Tires for wear and proper pressure **
Fluid levels *
; fill if necessary
Windshield for cracks, chips or pitsFor oil and fluid leaks
Washer spray and wiper operationHalf-shaft dust boots*
Brake, coolant re covery reservoir, automatic transmission 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.
447Scheduled Maintenance