2018 FORD FIESTA ECU

WARNING: For vehicles with
Auto-Start-Stop the battery requirement
is different. You must replace the battery
with one of exactly the same specification.
The battery is located in the engine
compartment. See
Under Hood
Overview (page 183).
Your vehicle has a maintenance-free
battery. It does not require additional
water during service.
If your vehicle battery has a cover, make
sure you correctly install it after cleaning
or replacing the battery.
For longer, trouble-free operation, keep the
top of the battery clean and dry and the
battery cables tightly fastened to the
battery terminals. If any corrosion is
present on the battery or terminals, remove
the cables from the terminals and clean
with a wire brush. You can neutralize the
acid with a solution of baking soda and
water.
We recommend that you disconnect the
negative battery cable terminal from the
battery if you plan to store your vehicle for
an extended period.
To maintain correct operation of the
battery management system, if you add
any electrical devices to your vehicle, do
not connect the ground connection directly
to the negative battery terminal. A
connection at the negative battery terminal
can cause inaccurate measurements of
the battery condition and potential
incorrect system operation.
Note: Electrical accessories or components
added to your vehicle by you or an
authorized dealer, may adversely affect
battery performance, durability and the
performance of other electrical systems on
your vehicle. If a replacement battery is required, we
recommend you use a Ford replacement
battery that matches the electrical
requirements of your vehicle.
If you disconnect or replace the battery
and your vehicle has an automatic
transmission, transmission must relearn
its adaptive strategy. Because of this, the
transmission may shift firmly when first
driven. This is normal operation while the
transmission fully updates its operation to
optimum shift feel.
Remove and Reinstall the Battery
To disconnect or remove the battery, do
the following:
1.
Apply the parking brake and switch the
ignition off.
2. Switch all electrical equipment off, for
example lights and radio.
3. Wait a minimum of two minutes before
disconnecting the battery.
Note: The engine management system has
a power hold function and remains powered
for a period after you switch the ignition off.
This is to allow diagnostic and adaptive
tables to be stored. Disconnecting the
battery without waiting can cause damage
not covered by the vehicle Warranty.
4. Disconnect the negative (-) battery cable terminal first.
5. Disconnect the positive (+) battery cable terminal last.
6. Remove the battery securing clamp.
7. Remove the battery.
8. Install in the reverse order.
Note: Before reconnecting the battery,
make sure the ignition remains switched off.
Note: If you only disconnect the negative
battery cable terminal, make sure it is
isolated or placed away from the battery
terminal to avoid un-intended connection
or arcing.
194
2018 Fiesta (CCT) Canada/United States of America, JE8J 19A321 AB enUSA, Edition date: 201706, First-Printing Maintenance

CHANGING THE ENGINE AIR
FILTER
WARNING: To reduce the risk of
vehicle damage and personal burn injuries,
do not start your engine with the air cleaner
removed and do not remove it while the
engine is running.
When changing the air filter element, use
only the air filter element listed. See
Motorcraft Parts
(page 246).
On vehicles with an EcoBoost engine, when
servicing the air cleaner it is important that
no foreign material enters the air induction
system. The engine and turbocharger are
susceptible to damage from even small
particles.
Change the air filter element at the correct
interval. See
Normal Scheduled
Maintenance (page 392).
Note: Failure to use the correct air filter
element may result in severe engine
damage. Your warranty may be void for any
damage to the engine if the correct air filter
element is not used. Vehicles with 1.0L EcoBoost and 1.6L
EcoBoost Engine Vehicles with 1.6L Duratec-16V Engine
1. Remove the retaining screws that
secure the air filter housing cover.
2. Carefully lift the air filter housing cover.
3. Remove the air filter element from the
air filter housing.
4. Wipe any dirt or debris from the air filter
housing and cover to make sure no dirt
gets in the engine and to make sure you
have a good seal.
210
2018 Fiesta (CCT) Canada/United States of America, JE8J 19A321 AB enUSA, Edition date: 201706, First-Printing MaintenanceE156923 E156924

5. Install a new air filter element. Be
careful not to crimp the filter element
edges between the air filter housing
and cover. This could cause filter
damage and allow unfiltered air to
enter the engine if not correctly seated.
6. Install the air filter housing cover.
7. Install the retaining screws to secure the air filter housing cover to the air
filter housing.
DRIVE BELT ROUTING - 1.0L
ECOBOOST™ DRIVE BELT ROUTING - 1.6L
DURATEC-16V TI-VCT (SIGMA)
211
2018 Fiesta (CCT) Canada/United States of America, JE8J 19A321 AB enUSA, Edition date: 201706, First-Printing MaintenanceE163197 E163198

When driving with a type 1 or 2
dissimilar spare tire listed above, do
not:
•
Exceed 50 mph (80 km/h).
• Load the vehicle beyond maximum
vehicle load rating listed on the Safety
Compliance Label.
• Tow a trailer.
• Use more than one dissimilar spare tire
at a time.
• Use commercial car washing
equipment.
• Try to repair the dissimilar spare tire.
When driving with a type 3 dissimilar
spare tire listed above, do not:
• Exceed
70 mph (113 km/h).
• Use more than one dissimilar spare
wheel and tire assembly at a time.
• Use commercial car washing
equipment.
Use of one of the dissimilar spare tires
listed above at any one wheel location can
lead to impairment of the following:
• Handling, stability and braking
performance.
• Comfort and noise.
• Ground clearance and parking at curbs.
• Winter weather driving capability.
• Wet weather driving capability.
• All-wheel driving capability (if
applicable).
The usage of a full-size dissimilar spare
wheel and tire assembly can lead to
impairment of the following:
• Handling, stability and braking
performance.
• Comfort and noise.
• Ground clearance and parking at curbs.
• Winter weather driving capability. •
Wet weather driving capability.
• All-wheel driving capability.
When driving with the full-size dissimilar
spare wheel and tire assembly additional
caution should be given to:
• Towing a trailer.
• Driving vehicles equipped with a
camper body.
• Driving vehicles with a load on the
cargo rack.
Drive cautiously when using a full-size
dissimilar spare wheel and tire assembly
and seek service as soon as possible.
Tire Change Procedure WARNING:
When one of the front
wheels is off the ground, the transmission
alone will not prevent the vehicle from
moving or slipping off the jack, even if the
transmission is in park (P). WARNING:
Do not attempt to
change a tire on the side of the vehicle
close to moving traffic. Pull far enough off
the road to avoid the danger of being hit
when operating the jack or changing the
wheel. WARNING:
To help prevent your
vehicle from moving when changing a
wheel, shift the transmission into park (P),
set the parking brake and use an
appropriate block or wheel chock to secure
the wheel diagonally opposite to the wheel
being changed. For example, when
changing the front left wheel, place an
appropriate block or wheel chock on the
right rear wheel. WARNING:
Do not get under a
vehicle that is only supported by a vehicle
jack.
240
2018 Fiesta (CCT) Canada/United States of America, JE8J 19A321 AB enUSA, Edition date: 201706, First-Printing Wheels and Tires

WARNING: Always use the jack
provided as original equipment with your
vehicle. If using a jack other than the one
provided, make sure the jack capacity is
adequate for the vehicle weight, including
any vehicle cargo or modifications. If you
are unsure if the jack capacity is adequate,
contact the authorized dealer. WARNING:
Make sure there is no
grease or oil on the threads or the surface
between the wheel lugs and nuts. This can
cause the lug nuts to loosen while driving.
Note: Passengers should not remain in the
vehicle when the vehicle is being jacked.
1. Park on a level surface, set the parking
brake and activate the hazard flashers.
2. Place the transmission in park (P) (automatic transmission) or reverse
(R) (manual transmission) and turn
the engine off.
3. Remove the carpeted wheel cover.
4. Remove the spare tire bolt securing the
spare tire by turning it
counterclockwise.
5. Remove the spare tire from the spare tire compartment. 6.
Remove the retaining bolt securing the
jack by turning it counterclockwise. 7. Remove the jack.
8. Block the diagonally opposite wheel.
9. Loosen each wheel lug nut one-half
turn counterclockwise but do not
remove them until the wheel is raised
off the ground.
Note: Jack at the specified locations to
avoid damage to the vehicle.
10. The vehicle jacking points are shown
here, and are depicted on the yellow
warning label on the jack.
241
2018 Fiesta (CCT) Canada/United States of America, JE8J 19A321 AB enUSA, Edition date: 201706, First-Printing Wheels and TiresE166565 E165188 E142551

11. Indentations in the sills show the
location of the jacking points.12. Remove the lug nuts with the lug
wrench.
13. Replace the flat tire with the spare tire, making sure the valve stem is
facing outward. Reinstall the lug nuts
until the wheel is snug against the
hub. Do not fully tighten the lug nuts
until the wheel has been lowered.
14. Lower the wheel by turning the jack handle counterclockwise. 15.
Remove the jack and fully tighten the
lug nuts in the order shown. See
Technical Specifications (page
242).
Stowing the Flat Tire
The full-size road wheel can be stowed in
the spare tire compartment.
1. Lift the carpeted wheel cover at an angle to access the spare tire
compartment.
2. Place the wheel in the spare tire well with the valve stem facing down. Use
the mini-spare bolt to secure the
wheel.
3. Place the jack and tools back into the spare tire compartment.
4. Replace the carpeted wheel cover.
TECHNICAL SPECIFICATIONS
242
2018 Fiesta (CCT) Canada/United States of America, JE8J 19A321 AB enUSA, Edition date: 201706, First-Printing Wheels and TiresE145908 E142553 12
3
4
E90589

Wheel Lug Nut Torque Specifications
WARNING: When a wheel is installed, always remove any corrosion, dirt or foreign
materials present on the mounting surfaces of the wheel or the surface of the wheel hub,
brake drum or brake disc that contacts the wheel. Make sure that any fasteners that
attach the rotor to the hub are secured so they do not interfere with the mounting surfaces
of the wheel. Installing wheels without correct metal-to-metal contact at the wheel
mounting surfaces can cause the wheel nuts to loosen and the wheel to come off while
your vehicle is in motion, resulting in loss of control. Ib-ft (Nm)
*
Bolt size
100 (135)
M12 x 1.5
* Torque specifications are for nut and bolt threads free of dirt and rust. Use only Ford
recommended replacement fasteners.
Retighten the lug nuts to the specified torque within 100 miles (160 kilometers) after any
wheel disturbance (such as tire rotation, changing a flat tire, wheel removal). Wheel pilot bore.
A
Inspect the wheel pilot bore and
mounting surface prior to installation.
Remove any visible corrosion or loose
particles.
243
2018 Fiesta (CCT) Canada/United States of America, JE8J 19A321 AB enUSA, Edition date: 201706, First-Printing Wheels and TiresE145950

AUDIO INPUT JACK
WARNING: Driving while distracted
can result in loss of vehicle control, crash
and injury. We strongly recommend that
you use extreme caution when using any
device that may take your focus off the
road. Your primary responsibility is the safe
operation of your vehicle. We recommend
against the use of any hand-held device
while driving and encourage the use of
voice-operated systems when possible.
Make sure you are aware of all applicable
local laws that may affect the use of
electronic devices while driving. WARNING:
Do not connect or adjust
the settings on your portable music player
when your vehicle is moving. WARNING: Always place your device
in a secure location in your vehicle so it
does not become a projectile in a sudden
stop or crash. Failure to follow this
instruction could result in personal injury.
Note: For optimum performance when
using any auxiliary device set the volume on
the device high. This reduces audio
interference when charging the device using
the vehicle power supply. The auxiliary input jack allows you to
connect and play music from your portable
music player through your vehicle speakers.
You can use any portable music player
designed for use with headphones. Your
audio extension cable must have male
connectors at each end.
1. Make sure your vehicle is stationary
with the audio unit and the portable
music player switched off.
2. Plug the extension cable from the device into the audio input jack.
3. Switch on the radio and select either a
tuned FM station or a CD.
4. Adjust the volume as desired.
5. Switch on your device and adjust the volume to half the maximum level.
6. Press AUX until LINE or LINE IN
appears in the display. You should hear
music from your device even if it is low.
7. Adjust the volume on your device until
it reaches the volume level of the FM
station or CD. Do this by switching back
and forth between the AUX and FM or
CD controls.
USB PORT
(If Equipped) WARNING:
Driving while distracted
can result in loss of vehicle control, crash
and injury. We strongly recommend that
you use extreme caution when using any
device that may take your focus off the
road. Your primary responsibility is the safe
operation of your vehicle. We recommend
against the use of any hand-held device
while driving and encourage the use of
voice-operated systems when possible.
Make sure you are aware of all applicable
local laws that may affect the use of
electronic devices while driving.
275
2018 Fiesta (CCT) Canada/United States of America, JE8J 19A321 AB enUSA, Edition date: 201706, First-Printing Audio SystemE149149