Toyota Mirai (2022 year). Manual in english — page 5
81
2-1. Fuel cell vehicle
2
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High-voltage cables (orange)
Fuel cell stack (fuel cell and hydrogen pump)
Air compressor
Air conditioning compressor
■
If “Hydrogen Leakage Detected
Visit Your Dealer” is displayed
on the multi-information display
A small amount of hydrogen gas
may be leaking. Have the vehicle
inspected immediately at the near-
est Toyota dealer.
■
If “FCV System Shutdown Due
to Hydrogen Leakage Stop in a
Safe Place See Owner’s Man-
ual” is displayed on the multi-
information display
●
Hydrogen gas may be leaking.
When hydrogen gas is leaking or
some other malfunction is
detected:
●
The air conditioning system will
shut off automatically.
■
Running out of fuel
When the vehicle has run out of fuel
and the fuel cell system cannot be
started, refuel the vehicle until the
low fuel level warning light (
turns off before trying to restart. It
may not be able to restart if the refu-
eled amount is too low.
■
Fuel cell stack
●
Depending on the usage environ-
ment, the fuel cell power output
may decline over the life of the
vehicle. However, this will have
almost no effect on driving perfor-
mance.
●
In the following situations, the fuel
cell power output may decline
faster than normal driving:
• Extended use in areas with high
amounts of dust
• Extended use in areas with high
levels of sulfur (such as volcanoes
or hot springs).
• Extended use in areas with high
concentrations of the following
substances:
-Organic solvents, such as paint and
thinner
-Amine-related materials such as
ammonia
-Chlorinated substances such as
salt air and snow-melting agent
• Salt water gets into the air cleaner
filter
It is recommended to replace the
air cleaner filter and clean the sur-
rounding components. Have the
vehicle inspected at your Toyota
dealer
• The number of times the fuel cell
system is started and stopped is
excessively high
• Extended use in freezing tem-
peratures
• Fill fuel with impurities which do
not follow ISO-14687
■
Hydrogen tanks
●
The hydrogen tanks are the high-
pressure storage containers that
are filled with compressed hydro-
gen gas. The vehicle can be refu-
eled at hydrogen stations.
●
The hydrogen tanks have an expi-
ration date. Vehicles with expired
hydrogen tanks must not be
driven or refueled until the hydro-
gen tanks are replaced. The expi-
ration date is written on the inside
of the fuel door. Consult your Toy-
ota dealer.
●
Consult your Toyota dealer if the
hydrogen tanks or valves need to
be disposed.
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2-1. Fuel cell vehicle
■
Fuel cell stack coolant
●
Fuel cell stack coolant uses a spe-
cifically-designed fluid with high
electrical insulation properties, in
order to safely cool the high-volt-
age fuel cell stack.
●
Never add water or other coolants
to the fuel cell stack cooling sys-
tem, as they will cause permanent
damage.
●
Consult your Toyota dealer for
replenishing or changing the fuel
cell stack coolant.
■
Ion filter
●
An ion filter is installed in the cool-
ant lines for the fuel cell stack, in
order to maintain the normal insu-
lation properties of the coolant.
●
It is necessary to periodically
change the ion filter. (
Contact your Toyota dealer for this
periodic maintenance.
■
Tailpipe
●
When the power switch is turned
off and the fuel cell system is
stopped (
P.174) after driving,
exhaust water is discharged. Be
careful when standing behind the
vehicle to avoid dripping or spray-
ing.
●
It is possible to manually purge
the exhaust. This may be desir-
able, for instance, before parking
in a garage. This is done by press-
ing the H
2
O switch. (
●
On cold days, water vapor in the
exhaust may appear as a white
mist emitted from the tailpipe. This
is not a malfunction. A white mist
may be emitted from the vehicle
side depending on the wind direc-
tion. If it is a concern, consult with
a Toyota dealer.
●
If the tailpipe is blocked, the fuel
cell system will stop.
●
In the following state when cold, a
white mist may be emitted. Water
vapor is being emitted as a sys-
tem protection and it is not a mal-
function.
• If several minutes have passed
after opening the fuel lid, such as
refueling.
• Several hours have passed after
the power switch was turned off.
■
Hydrogen detectors
When the power switch is turned to
ON, the hydrogen detectors are
activated.
■
Power output restriction
When the power output is restricted,
the vehicle may fail to accelerate or
even decelerate, even though the
accelerator pedal is depressed. If a
safe driving speed cannot be main-
tained, stop the vehicle in a safe
place away from the traffic. This
may be caused by the following con-
ditions:
●
The coolant temperature may be
too high. This can be caused by
driving conditions such as
repeated sudden acceleration and
deceleration, continuous driving
on an incline, continuous driving
at high altitudes with a high load,
etc. In such situations, “FCV sys-
tem overheated Output power
reduced” is displayed on the multi-
information display, and the power
output is restricted. Once the cool-
ant returns to normal temperature,
the power output will return to nor-
mal. (
●
The remaining fuel may be low.
After the low fuel level warning
light comes on, the output power
will be gradually restricted in order
to extend the possible driving dis-
tance. Once getting to this point,
the remaining driving distance
possible is short. Immediately refill
the vehicle with hydrogen.
●
On cold days, the low fuel level
warning light comes on faster than
usual and the output power is
restricted.
■
Electromagnetic waves (EMF)
●
High-voltage parts and cables in
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fuel cell vehicles have an electro-
magnetic shielding configuration,
and therefore emit approximately
the same amount of electromag-
netic waves as conventional gaso-
line-powered vehicles or home
electronic appliances.
●
Your vehicle may cause sound
interference in some third party-
produced radio parts.
■
Starting the fuel cell system in
an extremely cold environment
When the traction battery is
extremely cold (below approxi-
mately -22˚F [-30˚C]) under the
influence of outside temperature, it
may not be possible to start the fuel
cell system. In this case, try to start
the fuel cell system again after the
temperature of the traction battery
increases due to the outside tem-
perature increase etc.
■
Traction battery
The traction battery has a limited
service life. The lifespan of the trac-
tion battery can change according to
driving style and driving conditions.
■
Hydrogen Gas Characteristics
●
Hydrogen gas ignites more easily than gasoline, however it is light than air
and disperses quickly. The hydrogen system and tank sufficiently serve as
a counter-measure to prevent gas leaks. However, if by chance there is a
gas leak, the hydrogen gas is rapidly diluted until it is no longer flammable.
●
As with gasoline and natural gas, hydrogen gas is not dangerous if it is
handled properly. Thoroughly read and understand the characteristics
shown in the table below.
Hydrogen gas
LPG (Liquid
Petroleum Gas)
Gasoline
Normal state
Gaseous (Lighter
than air)
Gaseous
(Heavier than air)
Volatile liquid
(evaporates eas-
ily) (Heavier than
air)
Ease of ignition
Easier than gaso-
line
At the same level
as gasoline
—
84
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■
Basic concepts of hydrogen
safety
●
Prevent leakage
The pipe joints of the hydrogen
pipelines are designed to prevent
leaks.
The joints are checked for gas leak-
age at every official vehicle inspec-
tion.
●
Detect to stop leakage
• The vehicle is equipped with
hydrogen detectors. If the hydro-
gen detectors detect a leak, the
hydrogen tank valves automati-
cally close to prevent more hydro-
gen from escaping.
• The vehicle is equipped with a col-
lision sensor. If the collision sen-
sor detects a collision, the
hydrogen tank valves automati-
cally close to prevent hydrogen
gas from leaking from any dam-
aged components.
●
Disperse the leaked hydrogen gas
The hydrogen tanks and pipelines
are located outside of the passenger
compartment, so any leaked gas will
disperse into the atmosphere by
design.
●
Eliminate sources of fire
No source of fire is located near the
hydrogen pipelines by design.
Ease of accumu-
lation
Disperses
upward and is
diluted to safe
concentrations
in open air
Does not
adhere to cloth-
ing
Spreads on the
ground or floor
Does not
adhere to cloth-
ing
Spreads on the
ground or floor
Adheres to
clothing
Detectability
Due to its color-
less and odor-
less state,
difficult to
detect by sight
or smell
Vehicle hydro-
gen detectors
will display a
warning on the
multi-informa-
tion display
Detectable by
odor and gas
leaking noise
Detectable by
color and odor
Hydrogen gas
LPG (Liquid
Petroleum Gas)
Gasoline
WARNING
■
Hydrogen-related compo-
nents
●
Never alter, customize, or disas-
semble any hydrogen-related
parts.
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WARNING
●
The hydrogen tanks, fuel cell
stack, hydrogen pipelines, and
connecting components are
filled with hydrogen gas. Do not
remove or disassemble these
parts. Doing so can cause a
hydrogen gas leak, resulting in
fire or explosion of the vehicle,
which may result in death or
serious injury.
■
When hydrogen gas leak or
other malfunction is detected
●
If a large amount of hydrogen
gas leaking is noticed, turn off
the power switch, exit the vehi-
cle, and stay far away from it.
Display warning signs and keep
sources of fire away from the
vehicle. If possible, get assis-
tance. When the above is done,
immediately contact your Toyota
dealer.
●
If you notice gas leaking or any
other malfunction, immediately
stop the vehicle in a safe and
well-ventilated place, exit the
vehicle, and stay far away from
it.
●
If a warning message is dis-
played in the multi-information
display, immediately stop the
vehicle in a safe, well-ventilated
outdoor place.
■
Tailpipe
●
Do not directly touch the water
or steam coming out of the tail-
pipe. Doing so may cause low-
temperature burns.
●
The fuel cell vehicle generates
water during power generation.
The generated water dis-
charged from the tailpipe is not
suitable for drinking. Never
drink the water coming out of
the tailpipe.
●
You may notice a strange odor
from the tailpipe for a while after
the purchase of a new vehicle
or after an extended period of
non-use, but this is not a mal-
function. Also, the odor is harm-
less but it may be unpleasant,
so do not breathe in the
exhaust.
■
High-voltage and high-tem-
perature precautions
This vehicle is equipped with a
high-voltage system. Follow the
instructions below as high-volt-
ages can cause severe burns and
electric shock that may result in
death or serious injury.
●
Never touch, disassemble,
remove, or replace the high-
voltage parts, cables (orange),
or connectors.
●
The components inside the fuel
cell unit compartment will
become hot during operation.
Be careful of both the high-volt-
age and high-temperature, and
always obey the warning labels
on the vehicle.
●
Never touch the service plug
that is installed on the traction
battery. The service plug is used
to block high-voltages coming
from the traction battery during
maintenance or repair at your
Toyota dealer.
86
2-1. Fuel cell vehicle
WARNING
■
Precautions in case of an
accident
In the event of an accident,
observe the following precautions.
Failure to do so can cause fire or
electric shocks, resulting in death
or serious injury.
●
Stop the vehicle in a safe place
to prevent subsequent acci-
dents. Shift the shift position to
P and apply the parking brake.
●
Check for hydrogen gas leak-
age.
Hydrogen leaks will cause a
warning message to be shown
on the multi-information dis-
play. Larger leaks may also be
audible.
●
If a large amount of hydrogen
gas leaking is noticed, turn off
the power switch, exit the vehi-
cle, and stay far away from it.
Display warning signs and keep
sources of fire away from the
vehicle. If possible, get assis-
tance. When the above is done,
immediately contact your Toyota
dealer.
●
Do not touch the high-voltage
parts, cables (orange), or con-
nectors.
●
If electric wires are exposed
inside or outside your vehicle,
an electric shock may occur.
Never touch exposed electric
wires.
●
If a fluid leak occurs, do not
touch the fluid as it may be the
carbonate ester-based organic
electrolyte from the traction bat-
tery. If it comes into contact with
your skin or eyes, wash it off
immediately with a large
amount of water, and seek
immediate medical attention.
●
In case of a vehicle fire, the
hydrogen gas in the hydrogen
tanks is released angled down-
ward on both the right side of
the vehicle as well as the rear of
the vehicle, in order to reduce
damage to the hydrogen tanks.
Keep away from the vehicle and
do not stand on either the right
side or the rear of the vehicle.
●
If a vehicle fire occurs, it can be
extinguished with a Class A, B,
or C fire extinguisher. If using
water, apply a large amount
from a hydrant.
●
If your vehicle needs to be
towed, do so with the rear
wheels lifted. If the wheels are
touching the ground, the electric
motor (traction motor) may con-
tinue to generate electricity.
This may cause a fire.
■
Traction battery
●
Never resell, transfer, or modify
the traction battery. To prevent
accidents, traction batteries that
have been removed from dis-
posed vehicle are collected
through Toyota dealers. Do not
dispose of the traction battery
yourself.
If the traction battery is not
properly collected, the following
may occur, resulting in death or
serious injury:
• The traction battery may be ille-
gally disposed or dumped, and
it is hazardous to the environ-
ment. Additionally, someone
may touch a high-voltage part,
resulting in an electric shock.
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When a certain level of impact
from an accident is detected, the
fuel cell system is shut down
and the system shuts out the
high voltage.
Also, the fuel supply is stopped
from the hydrogen tank valves.
If the emergency shut off system
activates, your vehicle will not
restart. To restart the fuel cell
system, contact your Toyota
dealer.
A message is automatically dis-
played when a malfunction
occurs in the fuel cell system or
an improper operation is
attempted. (
If a warning message is shown
on the multi-information display,
read the message and follow the
instructions.
WARNING
• The traction battery is intended
to be used exclusively with your
fuel cell vehicle. If the traction
battery is used outside of your
vehicle or modified in any way,
accidents, such as electric
shock, heat generation, smoke
generation, ignition, explosion
and electrolyte leakage may
occur.
In particular, reselling or transfer-
ring the traction battery exposes
the receiving party to risks of acci-
dents as they may not be aware
of these dangers. Make sure to
inform them of the contents of this
Owner’s Manual.
●
If your vehicle is disposed with-
out the traction battery having
been removed, there is a dan-
ger of serious electric shock in
case high-voltage parts, cables,
or their connectors are touched.
(
When disposing of your vehicle,
the traction battery must be dis-
posed by your Toyota dealer, or
a qualified service shop. If the
traction battery is not disposed
of properly, it may cause electric
shock that can result in death or
serious injury.
NOTICE
■
Traction battery air intake
vents
Do not carry large amounts of
water such as water cooler bottles
in the vehicle. If water spills onto
the traction battery, the battery
may be damaged. Have the vehi-
cle inspected by your Toyota
dealer.
■
Fuel cell stack coolant
Never add water or other coolants
to the fuel cell stack cooling sys-
tem, as they will cause permanent
damage.
Emergency shut off sys-
tem
Fuel cell warning mes-
sage
88
2-1. Fuel cell vehicle
■
If a warning light comes on, a
warning message is displayed,
or the 12-volt battery connec-
tion is disconnected
The fuel cell system may not be
able to restart.
If the “READY” indicator does not
come on, even when the start pro-
cedure is repeated, contact your
Toyota dealer.
There are air intake vents on
each side of the rear seatback
with the purpose of cooling the
traction battery. If the vents
become blocked, traction bat-
tery output may be reduced.
Traction battery air intake
vents
NOTICE
■
Traction battery air intake
vents
●
Make sure not to block the air
intake vents with anything, such
as a seat cover, plastic cover, or
luggage. If the vents become
blocked, the traction battery
input and output may be
restricted, leading to a reduction
in traction battery output and a
malfunction.
●
Periodically clean the air intake
vents with a vacuum cleaner to
prevent clogging from accumu-
lated dust, etc.
●
A filter is installed to the air
intake vent. When the filter
remains noticeably dirty even
after cleaning the air intake
vent, filter cleaning or replace-
ment is recommended. When
cleaning or replacing the filter,
contact your Toyota dealer.
Refer to P.420 for details on
how to clean the filters.
●
Do not get water or foreign
materials in the air intake vents
as this may cause a short circuit
and damage the traction bat-
tery.
89
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Maintaining the fuel cell system
indicator to Eco area on the
multi-information display can
extend your driving range.
(
Drive your vehicle smoothly.
Avoid abrupt acceleration and
deceleration.
Mild acceleration and decelera-
tion can help curb wasteful fuel
consumption.
If the brakes are operated gently
and in a timely manner, a
greater amount of electrical
energy can be regenerated
when slowing down.
Repeated acceleration and
deceleration, as well as long
waits at traffic lights, will lead to
decreased fuel economy. Check
traffic reports before leaving and
avoid delays as much as possi-
ble. When driving in a con-
gested traffic situations, gently
release the brake pedal to allow
the vehicle to move forward
slightly while avoiding overuse
of the accelerator pedal. Doing
so can help control excessive
fuel consumption.
Similar to an electric vehicle, a
fuel cell vehicle uses the most
fuel in high output driving such
as driving on a steep uphill or at
high speeds. Moderate the vehi-
cle speed and maintain a steady
speed.
When using Eco drive mode, the
torque corresponding to the
accelerator pedal depression
amount can be generated more
smoothly than it is in normal
conditions. In addition, the oper-
ation of the air conditioning sys-
tem (heating/cooling) will be
minimized, improving the fuel
economy. (
Use the air conditioning only
when necessary. Doing so
Fuel cell vehicle driv-
ing tips
To maximize fuel economy
and range, pay attention to
the following:
Use of fuel cell system
Indicator
Accelerator pedal/brake
pedal operation
When braking
Delays
Driving with high power
output
Using Eco drive mode
Air conditioning
90
2-1. Fuel cell vehicle
can help reduce excessive
fuel consumption.
In summer: When the ambient
temperature is high, use the
recirculated air mode. Doing
so will help to reduce the bur-
den on the air conditioning
system and reduce fuel con-
sumption as well.
In winter: Avoid excess heat-
ing. Use the seat heater (if
equipped) or steering heater
(if equipped) to minimize the
need for cabin heating
(
Using eco air conditioning
mode, this helps curb fuel
consumption even with the air
conditioning system turned
on. (
Make sure to check the tire infla-
tion pressure frequently.
Improper tire inflation pressure
can cause poor fuel economy.
Also, as snow tires can cause
large amounts of friction, their
use on dry roads can lead to
poor fuel economy. Use tires
that are appropriate for the sea-
son.
Carrying heavy luggage will lead
to reduced fuel economy. Install-
ing a large roof rack will also
reduce fuel economy.
Checking tire inflation
pressure
Luggage
91
3
3
Vehicle
statu
s information an
d in
dicator
s
Vehicle status informa-
tion and indicators
3-1. Instrument cluster
Warning lights and indica-
tors . . . . . . . ...
Gauges and meters . ...
Multi-information display
. . . . . . . . ..
Head-up display . . ..
Energy monitor/consump-
tion screen/air purification
screen . . . . . ...
92
3-1. Instrument cluster
3-1.Instrument cluster
For the purpose of explanation, the following illustrations display all
warning lights and indicators illuminated.
The units used on the meters and some indicators may differ depending on
the target region.
Warning lights and indicators
The warning lights and indicators on the instrument cluster,
center panel and outside rear view mirrors inform the driver
of the status of the vehicle’s various systems.
Instrument cluster
93
3-1. Instrument cluster
3
Vehicle
statu
s information an
d in
dicator
s
Warning lights inform the driver
of malfunctions in the indicated
vehicle’s systems.
Warning lights
Hydrogen leak warn-
ing light
*1
(
(U.S.A.)
Brake system warn-
ing light
*1
(
(Canada)
(Red)
Brake system warn-
ing light
*1
(
(Yellow)
Brake system warn-
ing light
*1
(
(Red)
High coolant tempera-
ture warning light
*2
(
Fuel cell system over-
heat warning light
*3
(
Charging system
warning light
*3
(
SRS warning light
*1
(
Pop Up Hood warning
light
*1
(
(U.S.A.)
ABS warning light
*1
(
(Canada)
ABS warning light
*1
(
(Red)
Electric power steer-
ing system warning
light
*1
(
(Yellow)
Electric power steer-
ing system warning
light
*1
(
(Flashes or
illuminates)
PCS warning light
*1
(
(Orange)
LTA indicator
*2
(
(Flashes)
Intuitive parking assist
OFF indicator
*4
(if
equipped) (
(Flashes)
PKSB OFF indica-
tor
*1
(if equipped)
(
(Flashes)
RCTA OFF indicator
*1
(if equipped) (
(Flashes)
RCD OFF indicator
*1,
2
(If equipped)
(
Slip indicator light
*1
(
Inappropriate pedal
operation warning
light
*3
(
(Flashes)
Brake hold operated
indicator
*1
(
(U.S.A.)
(Flashes)
Parking brake indica-
tor (
(Canada)
(Flashes)
Parking brake indica-
tor (
Tire pressure warning
light
*1
(
94
3-1. Instrument cluster
*1
:These lights turn on when the
power switch is turned to ON to
indicate that a system check is
being performed. They will turn
off after the fuel cell system is
on, or after a few seconds. There
may be a malfunction in a sys-
tem if the light does not come on,
or turn off. Have the vehicle
inspected by your Toyota dealer.
*2
:This light illuminates on the
multi-information display.
*3
:This light illuminates on the
multi-information display with a
message.
*4
:Intuitive parking assist OFF indi-
cator turns on when the power
switch is turned to ON while the
Intuitive parking assist function is
on. It will turn off after a few sec-
onds.
The indicators inform the driver
of the operating state of the
vehicle’s various systems.
Low fuel level warn-
ing light
*2
(
Driver’s and front pas-
senger’s seat belt
reminder light
(
Rear passengers’ seat
belt reminder lights
*2
(
WARNING
■
If a safety system warning
light does not come on
Should a safety system light such
as the ABS and SRS warning light
not come on when you start the
fuel cell system, this could mean
that these systems are not avail-
able to help protect you in an acci-
dent, which could result in death
or serious injury. Have the vehicle
inspected by your Toyota dealer
immediately if this occurs.
Indicators
Turn signal indicator
(
(U.S.A.)
Headlight indicator
(
(Canada)
Tail light indicator
(
Headlight high beam indi-
cator (
Automatic High Beam
indicator (
(Blue)
Low coolant temperature
indicator
*1, 2
Smart key system indica-
tor
*3
(
Cruise control indicator
*2
(
Dynamic radar cruise
control indicator
*2
(
Cruise control “SET” indi-
cator
*2
(
(
*
4)
LTA indicator
*2
(
Intuitive parking assist
OFF indicator
*5, 6
(if
equipped) (
PKSB OFF indicator
*5, 7
(if equipped) (
95
3-1. Instrument cluster
3
Vehicle
statu
s information an
d in
dicator
s
*1
:Indicates the coolant tempera-
ture is cool.
*2
:This light illuminates on the
multi-information display.
*3
:This light illuminates on the
multi-information display with a
message.
*4
:Depending on the operating con-
ditions of the system, the color
and state (illuminated/blinking) of
the indicator change.
*5
:The light comes on when the
system is turned off.
*6
:Intuitive parking assist OFF indi-
cator turns on when the power
switch is turned to ON while the
Intuitive parking assist function is
on. It will turn off after a few sec-
onds.
*7
:These lights turn on when the
power switch is turned to ON to
indicate that a system check is
being performed. They will turn
off after the fuel cell system is
on, or after a few seconds. There
may be a malfunction in a sys-
tem if the lights do not turn on, or
turn off. Have the vehicle
(Flashes)
Slip indicator light
*7
(
VSC OFF indicator
*5, 7
(
PCS warning light
*5, 7
(
BSM outside rear view
mirror indicators
*7
(if
equipped) (
(This light illuminates on
the outside rear view mir-
rors.)
BSM OFF indicator
*5, 7
(if
equipped) (
RCTA OFF indicator
*5, 7
(if equipped) (
RCD OFF indicator
*2, 5, 7
(if equipped) (
Brake hold standby indi-
cator
*7
(
Brake hold operated indi-
cator
*7
(
Security indicator
(
(This light illuminates on
the center panel.)
“READY” indicator
(
Low outside temperature
indicator
*2, 8
(
(U.S.A.)
Parking brake indicator
(
(Canada)
Parking brake indicator
(
Br mode indicator
*2
(
Eco drive mode indica-
tor
*2
(
Sport mode indicator
*2
(
Snow mode indicator
*2
(
“AIRBAG ON/OFF” indi-
cator
*7
(
P.46)
(This light illuminates on
the center panel.)
96
3-1. Instrument cluster
inspected by your Toyota dealer.
*8
:When the outside temperature is
approximately 37°F (3°C) or
lower, the indicator will flash for
approximately 10 seconds, then
stay on.
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