
Protected components
Fuse amp rating
Fuse or relay number
Cooling fan module.
50A Midi
F1
Electric water pump.
50A Midi
F2
Body control module supply 1.
50A Midi
F3
Body control module supply 2.
50A Midi
F4
Not used.
—
F5
Not used.
—
F6
Anti-lock brake system pump.
40A**
F7
Anti-lock brake system valve.
30A**
F8
Vacuum pump.
40A**
F9
Heater blower motor.
40A**
F10
Engine management.
30A**
F11
Not used.
—
F12
Powertrain control module relay.
25A**
F13
Rear wiper.
20A**
F14
Body control module KL30 supply.
30A**
F15
Body control module 15 feed.
20A**
F16
Transmission oil pump (C-MAX Energi).
20A**
F17
Front wiper motor.
20A**
F18
Anti-lock brake system and electronic
stability program module.
5A*
F19
Horn.
15A*
F20
Stop light switch.
5A*
F21
Vacuum pump monitoring.
5A*
F22
Engine control module 15.
5A*
F23
Powertrain control module 15.
Transmission oil pump 15.
Relay coils.
5A*
F24
Light switch module.
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C-MAX (CCG) Mexico/United States of America/Canada, enUSA, CPE Review Fuses

Engine coolant reservoir cap. See Engine Coolant Check (page 214).
A
Engine oil filler cap. See
Engine Oil Check (page 213).
B
Engine oil dipstick. See
Engine Oil Dipstick (page 213).
C
Engine air filter cover. See
Changing the Engine Air Filter (page 230).
D
Inverter system controller.
E
Brake fluid reservoir cap. See
Brake Fluid Check (page 218).
F
Power distribution box. See
Fuses (page 200).
G
Inverter system controller coolant reservoir cap.
H
Windshield washer fluid reservoir cap. See
Washer Fluid Check (page 218).
I
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C-MAX (CCG) Mexico/United States of America/Canada, enUSA, CPE Review MaintenanceABCDEFG
HIE162485

UNDER HOOD OVERVIEW -
PLUG-IN HYBRID ELECTRIC
VEHICLE (PHEV)
WARNING
The inverter system controller
contains various high-voltage
components that can cause serious
bodily harm or death. The inverter system
controller is not serviceable and should
never be touched, probed, or tampered
with. Note:
Do not attempt to service any of the
high-voltage components or wiring. For
easier identification, the high-voltage wiring
insulation is color coated orange. Engine coolant reservoir cap. See Engine Coolant Check (page 214).
A
Engine oil filler cap. See
Engine Oil Check (page 213).
B
Engine oil dipstick. See
Engine Oil Dipstick (page 213).
C
Engine air filter cover. See
Changing the Engine Air Filter (page 230).
D
Inverter system controller.
E
Brake fluid reservoir cap. See
Brake Fluid Check (page 218).
F
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C-MAX (CCG) Mexico/United States of America/Canada, enUSA, CPE Review MaintenanceE190353

Power distribution box. See Fuses (page 200).
G
Inverter system controller coolant reservoir cap.
H
Windshield washer fluid reservoir cap. See
Washer Fluid Check (page 218).
I
ENGINE OIL DIPSTICK MINA
MAX
B
ENGINE OIL CHECK
Check the level before starting the engine
and make sure that the level is between
the MIN and the MAX marks.
1. Make sure that your vehicle is on level ground.
2. Switch the engine off and wait 10 minutes for the oil to drain into the oil
pan.
3. Remove the dipstick and wipe it with a clean, lint-free cloth. Replace the
dipstick and remove it again to check
the oil level.
If the oil level is at the minimum mark, add
oil immediately. Adding Engine Oil
Note:
Do not remove the filler cap when
the engine is running.
Note: Do not add oil further than the MAX
mark. Oil levels above the MAX mark may
cause engine damage. Only use oils certified for gasoline engines
by the American Petroleum Institute (API).
An oil with this trademark symbol
conforms to the current engine and
emission system protection standards and
fuel economy requirements of the
International Lubricants Specification
Advisory Council (ILSAC), comprised of
U.S. and Japanese automobile
manufacturers.
1. Remove the filler cap.
2. Add engine oil that meets the Ford
specifications. See
Capacities and
Specifications (page 266).
3. Wipe off any spilled oil.
4. Replace the filler cap. Turn it until you feel a strong resistance.
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E169062 E142732

Low Engine Use (If Equipped)
The low engine use mode is equipped on
Energi models only. The low engine use
mode keeps the engine oil quality in good
condition when you drive your vehicle with
limited engine use. If your vehicle is in low
engine use mode when you start the
vehicle, a message appears in the
information display. When your vehicle is
in low engine use mode, your vehicle runs
the engine as necessary.
Selecting EV Now mode when your vehicle
is in the low engine use mode suspends
the low engine use mode for as long as you
continue driving your vehicle. The low
engine use mode resumes the next time
you start your vehicle.
Changing the engine oil and resetting the
oil life monitoring system suspends the low
engine use mode.
ENGINE COOLANT CHECK WARNINGS
Do not add engine coolant when the
engine is hot. Steam and scalding
liquids released from a hot cooling
system can burn you badly. Also, you can
be burned if you spill coolant on hot engine
parts. Do not put engine coolant in the
windshield washer fluid container. If
sprayed on the windshield, engine
coolant could make it difficult to see
through the windshield. 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 the cap is loosened
slightly. Do not add coolant further than the
MAX mark. Engine Coolant and Inverter
System Controller Coolant
Your vehicle has 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 426).
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.
Maintain coolant concentration 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 Robinair Coolant and
Battery Refractometer 75240. We do 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.
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C-MAX (CCG) Mexico/United States of America/Canada, enUSA, CPE Review Maintenance

•
Never wash or rinse any ignition coil,
spark plug wire or spark plug well, or
the area in and around these locations.
• Cover the battery, power distribution
box, and air filter assembly to prevent
water damage when cleaning the
engine.
CLEANING THE WINDOWS AND
WIPER BLADES
Car wash chemicals and environmental
fallout can result in windshield and wiper
blade contamination. Dirty windshield and
wipers will result in poor windshield wiper
operation. Keep the windshield and wiper
blades clean to maintain windshield wiper
performance.
To clean the windshield and wiper blades:
• Clean the windshield with a
non-abrasive glass cleaner.
• For windshields contaminated with
tree sap, chemicals, wax or bugs, clean
the entire windshield using steel wool
(no greater than 0000 grade) in a
circular motion and rinse with water.
• Clean the wiper blades with isopropyl
rubbing alcohol or windshield washer
concentrate.
Note: Do not use razor blades or other
sharp objects to clean or remove decals
from the inside of the heated rear window.
The vehicle warranty does not cover
damage caused to the heated rear window
grid lines.
CLEANING THE INTERIOR WARNINGS
Do not use cleaning solvents, bleach
or dye on the vehicle
’s safety belts,
as these actions may weaken the
belt webbing. WARNINGS
On vehicles equipped with
seat-mounted airbags, do not use
chemical solvents or strong
detergents. Such products could
contaminate the side airbag system and
affect performance of the side airbag in a
collision. For fabric, carpets, cloth seats, safety belts
and seats equipped with side airbags:
•
Remove dust and loose dirt with a
vacuum cleaner.
• Remove light stains and soil with
Motorcraft Professional Strength
Carpet & Upholstery Cleaner.
• If grease or tar is present on the
material, spot-clean the area first with
Motorcraft Spot and Stain Remover. In
Canada, use Motorcraft Multi-Purpose
Cleaner.
• If a ring forms on the fabric after spot
cleaning, clean the entire area
immediately (but do not oversaturate)
or the ring will set.
• Do not use household cleaning
products or glass cleaners, which can
stain and discolor the fabric and affect
the flame retardant abilities of the seat
materials.
CLEANING THE INSTRUMENT
PANEL AND INSTRUMENT
CLUSTER LENS WARNING
Do not use chemical solvents or
strong detergents when cleaning the
steering wheel or instrument panel
to avoid contamination of the airbag
system. 235
C-MAX (CCG) Mexico/United States of America/Canada, enUSA, CPE Review Vehicle Care

We engineer and test all motor vehicles
and their components for reliable, regular
driving. Under various conditions,
long-term storage may lead to degraded
engine performance or failure unless you
use specific precautions to preserve engine
components.
General
•
Store all vehicles in a dry, ventilated
place.
• Protect from sunlight, if possible.
• If vehicles are stored outside, they
require regular maintenance to protect
against rust and damage.
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 trunk lid
hinges, and latches with a light grade
oil.
• Cover interior trim to prevent fading.
• Keep all rubber parts free from oil and
solvents. Engine
•
The engine oil and filter should be
changed prior to storage because used
engine oil contains contaminates that
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.
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C-MAX (CCG) Mexico/United States of America/Canada, enUSA, CPE Review Vehicle Care

ENGINE SPECIFICATIONS
2.0L ATK iVCT Engine
Engine
122
Cubic inches
Minimum 87 octane
Required fuel
1-3-4-2
Firing order
Coil on plug (COP)
Ignition system
12.3:1
Compression ratio
0.051 in. ± 0.002 in. (1.3 mm ± 0.05 mm)
Spark plug gap
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C-MAX (CCG) Mexico/United States of America/Canada, enUSA, CPE Review Capacities and Specifications