2021 FORD MUSTANG MACH-E battery

POST-CRASH ALERT SYSTEM
LIMITATIONS
Depending on applicable laws in the
country your vehicle was built for, the horn
does not sound in the event of a serious
impact.
SWITCHING THE POST-CRASH
ALERT SYSTEM OFF
Press the hazard flasher switch or the
unlock button on the remote control to
switch the system off.
Note:
The alert turns off when the vehicle
battery runs out of charge.
POST IMPACT BRAKING
HOW DOES POST IMPACT
BRAKING WORK
In the event of a moderate to severe crash,
the braking system reduces the vehicle ’s
speed in order to prevent or reduce the
impact of a potential secondary crash.
POST IMPACT BRAKING
LIMITATIONS
Post impact braking does not activate if
any of the following occur:
• The anti-lock braking system is
damaged during the collision.
• Electronic stability control is disabled.
OVERRIDING POST IMPACT
BRAKING
You can override post impact braking by
pressing the brake or accelerator pedal. POST IMPACT BRAKING
INDICATORS It flashes when a post impact
braking event is occurring.
AUTOMATIC CRASH SHUTOFF
WHAT IS AUTOMATIC CRASH
SHUTOFF
The system deactivates the high voltage
system if it is a battery or hybrid-electric
vehicle, in the event of a moderate or
severe crash.
RE-ENABLING YOUR VEHICLE
1. Switch your vehicle off.
2. Attempt to start your vehicle.
3. Switch your vehicle off.
4. Attempt to start your vehicle.
Note: If your vehicle does not start after the
third attempt, 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 Crash and Breakdown InformationE138639

FUSE PRECAUTIONS
WARNING: Always disconnect the
battery before servicing high current
fuses. WARNING:
To reduce risk of
electrical shock, always replace the
cover to the power distribution box
before reconnecting the battery or
refilling fluid reservoirs. WARNING:
Always replace a fuse
with one that has the specified
amperage rating. Using a fuse with a
higher amperage rating can cause severe
wire damage and could start a fire.
UNDER HOOD FUSE BOX
LOCATING THE UNDER HOOD
FUSE BOX ACCESSING THE UNDER HOOD
FUSE BOX
1. Remove the luggage compartment
cover. See Installing and Removing
the Luggage Compartment Cover
(page
277). 2. Pull the latch toward you and remove
the top cover. 3. Pull the connector lever upward.
4. Pull the connector upward to remove
it. 5. Pull both latches toward you and
remove the fuse box.
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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 FusesE329073 E253688 E329079 E253693

Protected Component
Fuse
Rating
Fuse
Location
Not used.
—
9
Not used.
—
10
Powertrain control module.
15 A
11
Not used.
—
12
AC electric compressor.
15 A
13
Active grille shutter.
Powertrain control module heater cooling pump.
Powertrain control module heater shut off valve.
Secondary drive unit transmission oil pump (GT).
15 A
14
Not used.
—
15
Battery charge control module.
10 A
16
Not used.
—
17
Powertrain control module.
10 A
18
Brake system control module.
10 A
19
Charge port status indicator.
5 A
20
Front luggage compartment actuator relay coil.
5 A
21
Amplifier.
20 A
22
Rear driver side electronic door.
20 A
23
Not used.
—
24
Left-hand enhanced headlamps.
25 A
25
Right-hand enhanced headlamps.
25 A
26
Keep alive power.
5 A
27
Front luggage compartment actuator relay coil.
5 A
28
DC/DC converter.
5 A
29
Not used.
—
30
Electronic power assist steering.
5 A
31
Body control module.
30 A
32
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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 Fuses

Protected Component
Fuse
Rating
Fuse
Location
Not used.
—
58
Body control module.
40 A
59
Not used.
—
60
Auxiliary power point.
20 A
61
Not used.
—
62
Not used.
—
63
Power liftgate.
30 A
64
Vehicle dynamics module.
30 A
65
Not used.
—
66
Not used.
—
67
Battery electronic control module.
5 A
68
Rear passenger side electronic door.
20 A
69
Not used.
—
70
Auxiliary power point.
20 A
71
Rear window wiper.
20 A
72
Not used.
—
73
Windshield wiper motor.
30 A
74
Not used.
—
75
Heated rear window.
30 A
76
Not used.
—
77
Front driver side electronic door.
20 A
78
Front passenger side electronic door.
20 A
79
Not used.
—
80
Rear window washer pump.
10 A
81
Not used.
—
82
Not used.
—
83
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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 Fuses

Protected Component
Fuse
Rating
Fuse
Location
Not used (spare).
40 A
84
Rain sensor.
5 A
85
Not used.
—
86
Not used.
—
87
Not used.
—
88
BATTERY FUSE BOX
LOCATING THE BATTERY FUSE
BOX ACCESSING THE BATTERY FUSE
BOX
1. Press the top right-hand side of the
cover, then pull the raised section on
the bottom left-hand side toward you.
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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 FusesE348774 E348774

2. Pull both wires out of the opening to
reveal the inline fuses. 3. Remove the caps that cover the inline
fuses. IDENTIFYING THE FUSES IN THE
BATTERY FUSE BOX
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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 FusesE348775 E348776 1
2E348777

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

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