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EnglishMaintenance -> Engine Coolant Check for your Ford Focus 2018-2025
Maintenance
OIL CHANGE INDICATOR
ENGINE COOLANT CHECK
RESET - VEHICLES WITH: 12.3
INCH INSTRUMENT CLUSTER
DISPLAY SCREEN
WARNING: Do not remove the
coolant reservoir cap when the engine 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
1. Press the menu button on the steering
wheel to enter the information display
main menu.
possibility of scalding and slowly remove
the cap. Failure to follow this instruction
could result in personal injury.
2. Select Settings.
3. Select Vehicle.
4. Select Oil life.
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.
5. Press and hold the OK button until the
system reset confirmation appears.
ENGINE COOLING FAN -
GASOLINE
WARNING: 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 you loosen
the cap slightly.
WARNING: Keep your hands and
clothing clear of the engine cooling fan.
Under certain conditions, the engine
cooling fan may continue to run for several
minutes after you switch your vehicle off.
WARNING: Do not add coolant
further than the MAX mark.
ENGINE COOLING FAN -
DIESEL
When the engine is cold, check the
concentration and level of the coolant at
the intervals listed in the scheduled
maintenance information.
Note: Make sure that the coolant level is
between the MIN and the MAX marks on
the coolant reservoir.
WARNING: Keep your hands and
clothing clear of the engine cooling fan.
Under certain conditions, the engine
cooling fan may continue to run for several
minutes after you switch your vehicle off.
This could happen in low ambient
Note: Coolant expands when it is hot. The
level may extend beyond the MAX mark.
temperatures and independent of the
engine coolant temperature, for example
short journeys or low coolant temperature.
See Diesel Particulate Filter (page 225).
423
Focus (CGE) Vehicles Built From: 15-03-2021, CG3784en enGBR, Edition date: 202012, First-Printing
Maintenance
Maintain coolant concentration within
It is very important to use prediluted
coolant approved to the correct
48% to 50%, which equates to a freeze
point between -34°C (-29°F) and -37°C
(-35°F). Coolant concentration should be
checked using a refractometer. We do not
recommend the use of hydrometers or
coolant test strips for measuring coolant
concentration.
specification in order to avoid plugging the
small passageways in the engine cooling
system. See Capacities and
Specifications (page 485). Do not mix
different colors or types of coolant in your
vehicle. Mixing of engine coolants or using
an incorrect coolant may harm the engine
or cooling system components and may
not be covered by the vehicle Warranty.
Adding Coolant
Note: If prediluted coolant is not available,
use the approved concentrated coolant
diluting it to 50/50 with distilled water. See
Capacities and Specifications (page 485).
Using water that has not been deionised
may contribute to deposit formation,
corrosion and plugging of the small cooling
system passageways.
Note: Coolants marketed for all makes and
models may not be approved to our
specifications and may cause damage to
the cooling system. Resulting component
damage may not be covered by the vehicle
Warranty.
WARNING: Do not add engine
coolant when the engine is on or the
cooling system is hot. Failure to follow
this instruction could result in personal
injury.
WARNING: Do not remove the
coolant reservoir cap when the engine 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.
If the coolant level is at or below the
minimum mark, add prediluted coolant
immediately.
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.
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
Capacities and Specifications (page
485).
Note: Do not use stop leak pellets, cooling
system sealants, or non-specified additives
as they can cause damage to the engine
cooling or heating systems. Resulting
component damage may not be covered by
the vehicle Warranty.
3. Add enough prediluted coolant to
reach the correct level.
Note: Automotive fluids are not
4. Replace the coolant reservoir cap. Turn
the cap clockwise until it contacts the
hard stop.
interchangeable.
424
Focus (CGE) Vehicles Built From: 15-03-2021, CG3784en enGBR, Edition date: 202012, First-Printing
Maintenance
5. Check the coolant level in the coolant
Follow your community's regulations and
standards for recycling and disposing of
automotive fluids.
reservoir the next few times you drive
your vehicle. If necessary, add enough
prediluted engine coolant to bring the
coolant level to the correct level.
Severe Climates
If you have to add more than 1 L (1.1 qt) of
engine coolant per month, have your
vehicle checked as soon as possible.
Operating an engine with a low level of
coolant can result in engine overheating
and possible engine damage.
In case of emergency, you can add a large
amount of water without engine coolant
in order to reach a vehicle service location.
In this instance, qualified personnel:
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 engine damage.
1. Must drain the cooling system.
2. Chemically clean the coolant system.
If you drive in extremely hot climates:
•
•
•
You can decrease the coolant
3. Refill with engine coolant as soon as
concentration to 40%.
possible.
A coolant concentration of 40%
Water alone, without engine coolant, can
cause engine damage from corrosion,
overheating or freezing.
provides improved overheat protection.
Coolant concentrations below 40%
decrease the overheat and corrosion
protection characteristics of the
coolant and may cause engine
damage.
Do not use the following as a coolant
substitute:
•
•
•
•
Alcohol.
Methanol.
Brine.
Vehicles driven year-round in non-extreme
climates should use prediluted coolant for
optimum cooling system and engine
protection.
Any coolant mixed with alcohol or
methanol antifreeze.
Coolant Change
Alcohol and other liquids can cause engine
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.
At specific mileage intervals, as listed in
the scheduled maintenance information,
the coolant should be changed. Add
prediluted coolant approved to the correct
specification. See Capacities and
Specifications (page 485).
Recycled Coolant
We do not recommend the use of recycled
coolant as an approved recycling process
is not yet available.
Note: Dispose of used coolant in the
appropriate manner.
425
Focus (CGE) Vehicles Built From: 15-03-2021, CG3784en enGBR, Edition date: 202012, First-Printing
Maintenance
Fail-Safe Cooling
high-speed operation, and may
completely shut down without warning,
potentially losing engine power, power
steering assist, and power brake assist,
which may increase the possibility of a
crash resulting in serious injury.
Fail-safe cooling allows you to temporarily
drive your vehicle before any incremental
component damage occurs. The fail-safe
distance depends on ambient
temperature, vehicle load and terrain.
WARNING: Do not remove the
coolant reservoir cap when the engine 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
How Fail-Safe Cooling Works
If the engine begins to overheat,
the coolant temperature gauge
moves toward the red zone:
A warning lamp illuminates and
a message may appear in the
information display.
possibility of scalding and slowly remove
the cap. Failure to follow this instruction
could result in personal injury.
If the engine reaches a preset
Your vehicle has limited engine power
when in the fail-safe mode, drive your
vehicle with caution. Your vehicle does not
maintain high-speed operation and the
engine may operate poorly.
Remember that the engine is capable of
automatically shutting down to prevent
engine damage. In this situation:
over-temperature condition, the engine
automatically switches to alternating
cylinder operation. Each disabled cylinder
acts as an air pump and cools the engine.
When this occurs, your vehicle still
operates, however:
•
•
Engine power is limited.
The air conditioning system turns off.
1. Pull off the road as soon as safely
Continued operation increases the engine
possible and switch the engine off.
temperature, causing the engine to
2. If you are a member of a roadside
assistance program, we recommend
that you contact your roadside
assistance service provider.
completely shut down. Your steering and
braking effort increases in this situation.
When the engine temperature cools, you
can re-start the engine. Have your vehicle
checked as soon as possible to minimize
engine damage.
3. If this is not possible, wait for a short
period of time for the engine to cool.
4. Check the coolant level. If the coolant
level is at or below the minimum mark,
add prediluted coolant immediately.
When Fail-Safe Mode Is Activated
5. When the engine temperature cools,
you can re-start the engine. Have your
vehicle checked as soon as possible to
minimize engine damage.
WARNING: Fail-safe mode is for
use during emergencies only. Operate
your vehicle in fail-safe mode only as
long as necessary to bring your vehicle
to rest in a safe location and seek
immediate repairs. When in fail-safe
mode, your vehicle will have limited
power, will not be able to maintain
Note: Driving your vehicle without repair
increases the chance of engine damage.
426
Focus (CGE) Vehicles Built From: 15-03-2021, CG3784en enGBR, Edition date: 202012, First-Printing
Maintenance
1. Stop your vehicle as soon as it is safe
Engine Coolant Temperature
to do so. Fully apply the parking brake,
shift into park (P) or neutral (N).
Management (If Equipped)
2. Leave the engine running until the
coolant temperature gauge needle
returns to the normal position. If the
temperature does not drop after
several minutes, follow the remaining
steps.
WARNING: To reduce the risk of
crash and injury, be prepared that the
vehicle speed may reduce and the
vehicle may not be able to accelerate
with full power until the coolant
temperature reduces.
3. Switch the engine off and wait for it to
cool. Check the coolant level.
If you tow a trailer with your vehicle, the
engine may temporarily reach a higher
temperature during severe operating
conditions, for example ascending a long
or steep grade in high ambient
temperatures.
4. If the coolant level is at or below the
minimum mark, add prediluted coolant
immediately.
5. If the coolant level is normal, restart
the engine and continue.
At this time, you may notice the coolant
temperature gauge moves toward the red
zone and a message may appear in the
information display.
BRAKE FLUID CHECK
You may notice a reduction in vehicle
speed caused by reduced engine power in
order to manage the engine coolant
temperature. Your vehicle may enter this
mode if certain high-temperature and
high-load conditions take place. The
amount of speed reduction depends on
vehicle loading, grade and ambient
temperature. If this occurs, there is no
need to stop your vehicle. You can
continue to drive.
The air conditioning may automatically
turn on and off during severe operating
conditions to protect the engine from
overheating. When the coolant
temperature decreases to the normal
operating temperature, the air conditioning
turns on.
WARNING: Do not use any fluid
other than the recommended brake fluid
as this will reduce brake efficiency. Use
of incorrect fluid could result in the loss
of vehicle control, serious personal injury
or death.
WARNING: Only use brake fluid
from a sealed container. Contamination
with dirt, water, petroleum products or
other materials may result in brake
system damage or failure. Failure to
adhere to this warning could result in the
loss of vehicle control, serious personal
injury or death.
WARNING: Do not allow the fluid
to touch your skin or eyes. If this
happens, rinse the affected areas
immediately with plenty of water and
contact your physician.
If the coolant temperature gauge moves
fully into the red zone, or if the coolant
temperature warning or service engine
soon messages appear in your information
display, do the following:
427
Focus (CGE) Vehicles Built From: 15-03-2021, CG3784en enGBR, Edition date: 202012, First-Printing
