2021 FORD MUSTANG MACH-E coolant reservoir

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

Multi-Point Inspection
Radiator, cooler, heater and air conditioning hoses
12V Battery performance
Suspension components for leaks ordamage
Exterior lamps and hazard warning system
operation
Steering and linkage
Fluid levels; fill if necessary 1
Tires for wear and proper pressure 2
For fluid leaks
Windshield for cracks, chips or pits
Half-shaft dust boots
Washer spray and wiper operation
Horn operation
1 Brake, coolant recovery reservoir and window washer.
2 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.
NORMAL SCHEDULED MAINTENANCE Normal Scheduled Maintenance
1
Rotate tires, inspect tire wear and measure tread depth.
Every 12 months or
10,000 mi (16,000 km).
Perform multi-point inspection (recommended).
Inspect brake pads, shoes, rotors, drums, brake linings,
hoses and parking brake.
Inspect cooling system level, strength and hoses.
Inspect half-shaft boots.
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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 Scheduled Maintenance