2021 FORD MUSTANG MACH-E maintenance

MAINTENANCE PRECAUTIONS
Have your vehicle serviced regularly to help
maintain its roadworthiness and resale
value. There is a large network of
authorized dealers that are there to help
you with their professional servicing
expertise. We believe that their specially
trained technicians are best qualified to
service your vehicle properly and expertly.
They are supported by a wide range of
highly specialized tools developed
specifically for servicing your vehicle.
If your vehicle requires professional service,
an authorized dealer can provide the
necessary parts and service. Check your
warranty information to find out which
parts and services are covered.
Use only recommended fluids and service
parts conforming to specifications. See
Capacities and Specifications (page
344).
OPENING AND CLOSING THE
HOOD
See
Opening and Closing the Front
Luggage Compartment (page 275).
UNDER HOOD OVERVIEW 303
2021 Mustang Mach-E (CGW) Canada/United States of America, Vehicles Built From: 07-06-2021, enUSA, Edition date: 202104, First-Printing MaintenanceE328337

Motor electronic coolant reservoir. See Checking the Coolant (page 304).
A
Battery coolant reservoir. See
Checking the Coolant (page 304).
B
Brake fluid reservoir.
See Checking the Brake Fluid (page 187).
C
Under hood fuse box. See
Under Hood Fuse Box (page 292).
D
Windshield washer fluid reservoir. See
Adding Washer Fluid (page 104).
E
Note: Some of these components are
underneath the luggage compartment cover
and cannot be seen unless the cover is
removed. See
Installing and Removing
the Luggage Compartment Cover (page
277).
CHECKING THE COOLANT WARNING:
Do not remove the
coolant reservoir cap when the vehicle
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:
Do not add coolant
further than the MAX mark.
Note: Coolant expands when it is hot. The
level may extend beyond the
MAX mark.
Your vehicle has a battery cooling system
and a motor electrical cooling system. See
Under Hood Overview
(page 303). The
luggage compartment covers need to be
removed in order to access the reservoirs.
See
Installing and Removing the
Luggage Compartment Cover (page 277). When the electric motor is cold, check the
concentration and level of the coolant at
the intervals listed in the scheduled
maintenance information. See Scheduled
Maintenance
(page 390).
Maintain coolant concentration within
48% to 50%, which equates to a freeze
point between
-29–-35°F (-34–-37°C).
Check coolant concentration using a
refractometer. We do not recommend the
use of hydrometers or coolant test strips
for measuring coolant concentration.
Adding Coolant
It is very important to use prediluted
coolant approved to the correct
specification in order to avoid plugging the
small passageways in the electric motor
cooling system. See
Cooling System
Capacity and Specification (page 344).
Do not mix different colors or types of
coolant in your vehicle. Mixing of coolants
or using an incorrect coolant may harm the
electric motor or cooling system
components and may cause damage that
the vehicle warranty may not cover.
Note: Automotive fluids are not
interchangeable.
Note: Do not use stop leak pellets, cooling
system sealants, or non-specified additives
as they can cause damage to the electric
motor cooling or heating systems.
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2021 Mustang Mach-E (CGW) Canada/United States of America, Vehicles Built From: 07-06-2021, enUSA, Edition date: 202104, First-Printing Maintenance

Note:
If prediluted coolant is not available,
use the approved concentrated coolant
diluting it to 50/50 with distilled water. See
Cooling System Capacity and
Specification (page 344). Using water that
has not been deionized could contribute to
deposit formation, corrosion and plugging
of the small cooling system passageways.
Note: Coolants marketed for all makes and
models might not meet our specifications
and could cause damage to the cooling
system. Resulting component damage
could void 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. See Cooling
System Capacity and Specification
(page 344).
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 coolant to bring the coolant
level to the correct level.
If you have to add more than
1.1 qt (1 L) of
coolant per month, have your vehicle
checked as soon as possible. Operating
your vehicle with a low level of coolant can
result in overheating and possible electric
motor damage. In case of emergency, you can add a large
amount of water without coolant in order
to reach a vehicle service location. In this
instance, have qualified personnel do the
following as soon as possible:
1. Drain the cooling system.
2. Chemically clean the coolant system.
3. Refill with coolant.
Water alone, without coolant, can cause
damage from corrosion, overheating or
freezing.
Do not use the following as a coolant
substitute:
•
Alcohol.
• Methanol.
• Brine.
• Any coolant mixed with alcohol or
methanol antifreeze.
Alcohol and other liquids can cause
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 coolant.
Recycled Coolant
We do not recommend the use of recycled
coolant, as an approved recycling process
is not yet available.
Dispose of used coolant in an appropriate
manner. Follow your community's
regulations and standards for recycling and
disposing of automotive fluids.
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2021 Mustang Mach-E (CGW) Canada/United States of America, Vehicles Built From: 07-06-2021, enUSA, Edition date: 202104, First-Printing Maintenance

Severe Climates
If you drive in extremely cold climates:
•
It may be necessary to increase the
coolant concentration above 50%.
• A coolant concentration of 60%
provides improved freeze point
protection.
• Coolant concentrations above 60%
decrease the overheat protection
characteristics of the coolant and may
cause damage to the electric motor.
If you drive in extremely hot climates:
• You can decrease the coolant
concentration to 40%.
• A coolant concentration of 40%
provides improved overheat protection.
• Coolant concentrations below 40%
decrease the overheat and corrosion
protection characteristics of the
coolant and may cause damage to the
electric motor.
Coolant Change
Change the coolant at specific mileage
intervals listed in the scheduled
maintenance information. Add prediluted
coolant approved to the correct
specification. See Cooling System
Capacity and Specification (page 344).
AUTOMATIC TRANSMISSION
FLUID CHECK
If required, have an authorized dealer check
and change the transmission fluid at the
correct service interval. See
Scheduled
Maintenance (page 390).
The automatic transmission does not have
a transmission fluid dipstick. Refer to your scheduled maintenance
information for scheduled intervals for fluid
checks and changes. Your transmission
does not consume fluid. However, 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.
12V BATTERY
CHANGING THE 12V BATTERY
If the 12 volt battery needs servicing, see
your authorized dealer.
CHARGING THE 12V BATTERY
Your vehicle has a high voltage to low
voltage energy transfer feature that keeps
the 12 volt battery charged by the high
voltage battery. If the 12 volt battery level
is low, the high voltage battery transfers
energy to the 12 volt battery when the
vehicle is off.
12V BATTERY –
TROUBLESHOOTING
12V BATTERY – WARNING LAMPS
If it illuminates when the green
ready to drive indicator is
activated, this indicates your
vehicle requires service. Have your vehicle
checked as soon as possible.
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2021 Mustang Mach-E (CGW) Canada/United States of America, Vehicles Built From: 07-06-2021, enUSA, Edition date: 202104, First-Printing Maintenance

12V BATTERY – INFORMATION MESSAGES
Action
Message
Your vehicle has a 12 volt battery problem.
We recommend having the battery system checked by an authorized EV dealer.
12V Battery Fault Service Soon
The electric vehicle range is reduced due
to the park and/or hazard lamps on while your vehicle was off.
Electric Range Reduced due to Park/Hazard
Lamps On While Vehicle Off
Your vehicle has an electrical drain withinthe vehicle. Please check for any after-
market devices that could be draining the
battery. If none are found, please have your
vehicle serviced by an authorized EV dealer.
Electrical System Drain Service Required
ADJUSTING THE HEADLAMPS
Vertical Aim Adjustment
The headlamps on your vehicle are
properly aimed at the assembly plant. If
your vehicle has been in an accident, have
the alignment of your headlamps checked
by an authorized dealer.
Headlamp Aiming Target 8 feet (2.4 meters)
A
Center height of lamp to ground
B 25 feet (7.6 meters)
C
Horizontal reference line
D
Vertical Aim Adjustment
1. Park your vehicle on a level surface approximately 25 ft (7.6 m) away from
a vertical wall or screen.
2. Apply the parking brake.
3. Measure the height from the center of your headlamp to the ground.
Note: There may be an identifying mark on
the lens to help you locate the center of the
headlamp low beam light.
4. Mark a horizontal reference line on the
wall or screen that is a minimum of 8 ft
(2.4 m)
long.
5. Switch the low beam headlamps on and open the hood.
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6. On the wall or screen you will observe
a flat zone of high intensity light
located at the top of the right hand
portion of the beam pattern. If the top
edge of the high intensity light zone is
not at the horizontal reference line, the
headlamp will need to be adjusted.
Note: To see a clearer light pattern while
adjusting one headlamp, block the light
from the other headlamp. 7. Locate the vertical adjuster on each
headlamp. Use a Phillips #2
screwdriver to turn the adjuster either
clockwise or counterclockwise to
adjust the vertical aim of the
headlamp.
8. Repeat Steps 3 through 7 to adjust the
other headlamp.
9. Close the hood and turn off the lamps.
EXTERIOR BULBS
EXTERIOR BULB SPECIFICATION
CHART
Your vehicle has LED lamps. These are not
serviceable items. See an authorized dealer
if they fail.
INTERIOR BULBS
INTERIOR BULB SPECIFICATION
CHART
Your vehicle has LED lamps. These are not
serviceable items. See an authorized dealer
if they fail.
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PREPARING YOUR VEHICLE
FOR STORAGE
If you plan on storing your vehicle for 30
days or more, read the following
maintenance recommendations to make
sure your vehicle stays in good operating
condition.
We engineer and test all vehicles and their
components for reliable, regular driving.
Under various conditions, long-term
storage may lead to degraded
performance or failure unless you use
specific precautions to preserve vehicle
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 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. 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 Systems
We recommend the following actions for
your vehicle:
• When storing your vehicle for greater
than 30 days the state of charge
should be approximately 50%.
Additionally we recommend
disconnecting the 12v battery which
will reduce system loads on the HV
battery.
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.
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2021 Mustang Mach-E (CGW) Canada/United States of America, Vehicles Built From: 07-06-2021, enUSA, Edition date: 202104, First-Printing Storing Your Vehicle

WHAT IS THE TIRE PRESSURE
MONITORING SYSTEM
The tire pressure monitoring
system measures the vehicle's
tire pressures. A warning lamp
illuminates if one or more tires are
significantly underinflated or if there is a
system malfunction.
TIRE PRESSURE MONITORING
SYSTEM OVERVIEW WARNING: If the tire pressure
monitor sensor becomes damaged it
may not function. WARNING:
Under-inflation is the
most common cause of tire failures and
may result in severe tire cracking, tread
separation or blowout, with unexpected
loss of vehicle control and increased risk
of injury. Under-inflation increases
sidewall flexing and rolling resistance,
resulting in heat buildup and internal
damage to the tire. It also may result in
unnecessary tire stress, irregular wear,
loss of vehicle control and accidents. A
tire can lose up to half of its air pressure
and not appear to be flat! WARNING:
To determine the
required pressure(s) for your vehicle, see
the Safety Compliance Certification
Label (on the door hinge pillar,
door-latch post or the door edge that
meets the door-latch post, next to the
driver seat) or the Tire Label on the
B-Pillar or the edge of the driver door. Each tire, including the spare (if provided),
should be checked monthly when cold and
inflated to the inflation pressure
recommended by the vehicle manufacturer
on the vehicle placard or tire inflation
pressure label. (If your vehicle has tires of
a different size than the size indicated on
the vehicle placard or tire inflation pressure
label, you should determine the proper tire
inflation pressure for those tires).
As an added safety feature, your vehicle
has been equipped with a Tire Pressure
Monitoring System (TPMS) that
illuminates a low tire pressure telltale
when one or more of your tires is
significantly under-inflated. Accordingly,
when the low tire pressure telltale
illuminates, you should stop and check
your tires as soon as possible, and inflate
them to the proper pressure. Driving on a
significantly under-inflated tire causes the
tire to overheat and can lead to tire failure.
Under-inflation also reduces fuel efficiency
and tire tread life, and may affect the
vehicle
’s handling and stopping ability.
Please note that the TPMS is not a
substitute for proper tire maintenance, and
it is the driver ’s responsibility to maintain
correct tire pressure, even if under-inflation
has not reached the level to trigger
illumination of the TPMS low tire pressure
telltale.
Your vehicle has also been equipped with
a TPMS malfunction indicator to indicate
when the system is not operating properly.
The TPMS malfunction indicator is
combined with the low tire pressure
telltale. When the system detects a
malfunction, the telltale will flash for
approximately one minute and then remain
continuously illuminated. This sequence
will continue upon subsequent vehicle
start-ups as long as the malfunction exists.
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2021 Mustang Mach-E (CGW) Canada/United States of America, Vehicles Built From: 07-06-2021, enUSA, Edition date: 202104, First-Printing Tire Pressure Monitoring System