2020 TOYOTA PRIUS PRIME warning light

561-1. For safe use
PRIUS PRIME_OM_OM47C77U_(U)
Exhaust gas precautions
Harmful substance to the human body is included in exhaust
gases if inhaled.
WARNING
Exhaust gases include harmful carbon monoxide (CO), which is colorless and
odorless. Observe the following precautions.
Failure to do so may cause exhaust gases enter the vehicle and may lead to
an accident caused by light-headedness, or may lead to death or a serious
health hazard.
■ Important points while driving
● Keep the back door closed.
● If you smell exhaust gases in the vehicle even when the back do or is
closed, open the side windows and have the vehicle inspected at your
Toyota dealer as soon as possible.
■ When parking
● If the vehicle is in a poorly ventilated area or a closed area, such as a
garage, stop the hybrid system.
● Do not leave the vehicle with the hybrid system on for a long t ime.
If such a situation cannot be avoided, park the vehicle in an open space
and ensure that exhaust fumes do not enter the vehicle interior .
● Do not leave the hybrid system operating in an area with snow build-up, or
where it is snowing. If snowbanks build up around the vehicle w hile the
hybrid system is operating, exhaust gases may collect and enter the vehi-
cle.
■ Exhaust pipe
The exhaust system needs to be checked periodically. If there is a hole or
crack caused by corrosion, damage to a joint or abnormal exhaust noise, be
sure to have the vehicle inspected and repaired by your Toyota dealer.

621-2. Child safety
PRIUS PRIME_OM_OM47C77U_(U)
WARNING
■When using a child restraint system
Observe the following precautions.
Failure to do so may result in death or serious injury.
● Never install a rear-facing child restraint system on the front passenger
seat even if the “AIR BAG OFF” indicator light is illuminated. In the event
of an accident, the force of the rapid inflation of the front passenger airbag
can cause death or serious injury to the child if the rear-facing child
restraint system is installed on the front passenger seat.
● A forward-facing child restraint system may be installed on the front pas-
senger seat only when it is unavoidable. A child restraint syst em that
requires a top tether strap should not be used in the front passenger seat
since there is no top tether strap anchor for the front passenger seat.
● When a booster seat is installed, always ensure that the should er belt is
positioned across the center of the child’s shoulder. The belt should be
kept away from the child’s neck, but not so that it could fall off the child’s
shoulder.
● A forward-facing child restraint system
may be installed on the front passenger
seat only when it is unavoidable. When
installing a forward-facing child restraint
system on the front passenger seat,
move the seat as far back as possible,
even if the “AIR BAG OFF” indicator
light is illuminated.
If the head restraint interferes with the
child restraint system installation and
the head restraint can be removed,
remove the head restraint.
● Do not allow the child to lean his/her
head or any part of his/her body against
the door or the area of the seat, front or
rear pillars, or roof side rails from which
the SRS side airbags or SRS curtain
shield airbags deploy even if the child is
seated in the child restraint system. It is
dangerous if the SRS side airbags and
curtain shield airbags inflate, and the
impact could cause death or serious
injury to the child.

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PRIUS PRIME_OM_OM47C77U_(U)
2-1. Plug-in hybrid system
■If a warning light comes on, a warning message is displayed or the 12-
volt battery is disconnected
The hybrid system may not start. In that case, try to start the system again. If
the “READY” indicator does not come on, contact your Toyota dea ler.
■ Running out of fuel
When the vehicle has run out of fuel and the hybrid system cann ot be started,
refuel the vehicle with at least enough gasoline to make the lo w fuel level
warning light ( P. 664) go off. If there is only a small amount of fuel, the
hybrid system may not be able to start. (The standard amount of fuel is about
2.0 gal. [7.5 L, 1.7 Imp.gal.], when the vehicle is on a level surface. This value
may vary when the vehicle is on a slope. Add extra fuel when th e vehicle is
inclined.)
■ Electromagnetic waves
●High voltage parts and cables on the hybrid vehicles incorporat e electro-
magnetic shielding, and therefore emit approximately the same amount of
electromagnetic waves as conventional gasoline powered vehicles or home
electronic appliances.
● Your vehicle may cause sound interference in some third party-p roduced
radio parts.
■ Effect of magnetic forces
If objects that generate strong magnetic forces, such as large speakers, are
placed inside the luggage compartment or installed nearby, the generated
magnetic forces may negatively affect the hybrid system.
■ Hybrid battery (traction batt ery) (lithium-ion battery)
The hybrid battery (traction battery) has a limited service lif e.
The hybrid battery (traction battery) capacity (the ability to hold a charge)
reduces with time and use in the same way as other rechargeable batteries.
The extent at which capacity reduces changes drastically depending on the
environment (ambient temperature, etc.) and usage conditions, such as how
the vehicle is driven and how the hybrid battery (traction batt ery) is charged.
This is a natural characteristic of lithium-ion batteries, and is not a malfunc-
tion. Also, even though the distance that can be driven in EV m ode decreases
when the hybrid battery (traction battery) capacity reduces, ve hicle perfor-
mance does not significantly become worse.
In order to reduce the possibility of the capacity reducing, fo llow the directions
listed on P. 143, “Capacity reduction of the hybrid battery (tr action battery)”.
■ Starting the hybrid system in a n extremely cold environment
When the hybrid battery (traction battery) is extremely cold (b elow approxi-
mately -22 F [-30C]) under the influence of the outside temperature, it may
not be possible to start the hybrid system. In this case, try to start the hybrid
system again after the temperature of the hybrid battery increases due to the
outside temperature increase etc.

PRIUS PRIME_OM_OM47C77U_(U)
1532-2. Charging
2
Plug-in hybrid system
WARNING
■When charging
Observe the following precautions.
Failure to do so may cause an unexpected accident, resulting in death or
serious injury.
● Connect to a power source suitable for charging. ( P. 131)
● Check that the charging inlet, charging cable, plug and outlet are free of
foreign matter.
● Only use outlets where the plug can be securely inserted.
● Do not charge if the charging cable is coiled or bundled.
● Wrapping 120 V charging cable while in-use is not recommended b ecause
cable may overheat. Failure to rewrap charging cable when not in-use
could result in strangulation or tripping hazard.
● Do not wash the vehicle while the charging cable is connected to the vehi-
cle and when the charging lid is open.
● Do not touch the terminals of the charging connector and chargi ng inlet
with a sharp metal objects (needles etc.) or hands, or short th em with for-
eign objects.
● When charging outdoors, make sure to connect to a weatherproof outlet
for outdoor use.
● Do not insert the plug if the outlet is submerged in water or s no w.
● Follow these points when charging while it is raining or snowin g.
• Check that no snow, water or ice has accumulated around the charging connector terminals and the vehicle charging inlet. Tap snow, w ater or
ice gently from connector prior to inserting charging connector into the
vehicle’s charging inlet.
• Do not connect the plug if your hands are wet. Also, do not get the plug or outlet wet.
● Do not charge the vehicle during a lightning storm.
● Do not let the wheels on the charging cable, plug, charging connector and
CCID (Charging Circuit Interrupting Device).
● Firmly insert the plug into the outlet.
● Do not use an extension cord and converting adaptor.

PRIUS PRIME_OM_OM47C77U_(U)
1892-2. Charging
2
Plug-in hybrid system
If “Charging Stopped High Energy Use See Owner’s Manual” is sho wn
Power is being consumed by
electrical components of
vehicle
Check the following items, and then carry
out charging again.
• If the headlights and audio are turned on,
turn them off.
• Turn the power switch off.
If charging cannot be carried out, even after
performing the above, the auxiliary battery
may not be sufficiently charged. Operate
the hybrid system for approximately 15 min-
utes or more to charge the auxiliary battery.
 If “Charging System Malfunction See Owner’s Manual” is shown
Malfunction occurred in
charging systemHave the vehicle inspected by your
Toyota dealer.
If “The Traction Battery became low temperature System put priority on
charging to preserve battery condition” is shown (Alaska and Canada
only)
The Hybrid battery (traction
battery) warming control was
operated ( P. 136)
When the hybrid battery (traction battery)
warning control operates, the timer charge
schedule is not used and charging is per-
formed. This is a control to protect the
hybrid battery (traction battery), and not a
malfunction.
Likely causeCorrection procedure

191
PRIUS PRIME_OM_OM47C77U_(U)
Instrument cluster3
3. Instrument clusterCombination meter............ 192
Warning lights and indicators ........................ 201
Main display ...................... 209
Multi-information display............................. 218
Head-up display ................ 251
Energy monitor/ consumption screen
(vehicles with 7-inch
display) ........................... 259
Energy monitor/ consumption screen/
detail screen (vehicles
with 11.6-inch display) .... 265

192
PRIUS PRIME_OM_OM47C77U_(U)
3. Instrument cluster
Combination meter
The units used on the display may differ depending on the target region.
Main display (P. 209)
The main display shows basic information related to driving, su ch as the
vehicle speed and remaining fuel amount.
Multi-information display ( P. 218)
The multi-information display shows information which makes the vehicle
convenient-to-use, such as the hybrid system operation condition, electric-
ity consumption and fuel consumption history. Also, the operati on contents
of the driving support systems and the combination meter display settings
can be changed by switching to the settings screen.
Warning lights and indicators ( P. 2 0 1 )
The warning lights and indicators comes on or flashes to indicate problems
with the vehicle or to show the operation status of the vehicle ’s systems.
Clock (P. 197)
The large meter uses 2 liquid crystal displays to display infor ma-
tion such as the vehicle condition , driving status, electricity con-
sumption and fuel consumption.
Combination meter layout
1
2
3
4

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PRIUS PRIME_OM_OM47C77U_(U)
3. Instrument cluster
■When the menu screen on the navigation system is operated (vehicles
with 11.6-inch display)
■ Liquid crystal display
Small spots or light spots may appear on the display. This phen omenon is
characteristic of liquid crystal displays, and there is no prob lem continuing to
use the display.
■ Pop-up display
Some functions, such as the driving mode select switch and air conditioning
system, are operation-linked and display pop-up screens on the multi-infor-
mation display. If the pop-up screens of these functions are not desired, they
can be turned off in the “Meter Customize” settings. ( P. 246)
A pop-up display of the menu screen icon
is displayed on the multi-information dis-
play.
*
*
: The pop-up display on the navigation
system can be turned off in the “Meter
Customize” settings. ( P. 247)
WARNING
■To prevent an accident
■ Caution for use while driving
For safety, avoid operating the meter control switch while driv ing as much
as possible, and do not look continuously at the multi-informat ion display
while driving. Stop the vehicle and operate the meter control switch. Failure
to do so may cause a steering wheel operation error, resulting in an unex-
pected accident.
NOTICE
■ The information display at low temperatures
Allow the interior of the vehicle to warm up before using the liquid crystal
information display. At extremely low temperatures, the information display
monitor may respond slowly, and display changes may be delayed.
Do not place anything or attach a sticker
in front of the instrument cluster. The item
may obscure or obstruct the display, or
could reflect off the display, possibly
causing an accident.