2020 TOYOTA PRIUS PLUG-IN HYBRID light

7508-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
One of the following may be the cause of the problem:
● The 12-volt battery may be discharged. (P. 755)
● One or both of the 12-volt battery terminals may be disconnected.
( P. 644)
Contact any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer if the problem cannot be repaired, or if repair procedures
are unknown.
When the hybrid system does not start, the following steps can be
used as an interim measure to start the hybrid system if the power
switch is functioning normally.
Do not use this starting procedure except in cases of emergency.
Set the parking brake.
Turn the power switch to ACCESSORY mode.
Press and hold the power switch for about 15 seconds while
depressing the brake pedal firmly.
Even if the hybrid system can be started using the above steps, the
system may be malfunctioning. Have the vehicle inspected by any
authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
The interior lights and headlights do not turn on, or the horn
does not sound.
Emergency start function
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7568-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Connect the jumper cables according to the following procedure:
Connect a positive jumper cable clamp to the positive (+) battery
terminal on your vehicle.
Connect the clamp on the other end of the positive cable to the
positive (+) battery terminal on the second vehicle.
Connect a negative cable clamp to the negative (-) battery termi-
nal on the second vehicle.
Connect the clamp at the other end of the negative cable to a
solid, stationary, unpainted metallic point away from the 12-volt
battery and any moving parts, as shown in the illustration.
Start the engine of the second vehicle. Increase the engine speed
slightly and maintain at that level for approximately 5 minutes to
recharge the 12-volt battery of your vehicle.
Maintain the engine speed of the second vehicle and start the
hybrid system of your vehicle by turning the power switch to ON
mode.
Make sure the “READY” indicator comes on. If the indicator light
does not come on, contact any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer.
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7578-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
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When trouble arises
Once the hybrid system has started, remove the jumper cables in
the exact reverse order from which they were connected.
To install the engine cover, conduct the removal procedure in
reverse. After installing, check that the fixed pins are inserted
securely.
Once the hybrid system starts, have the vehicle inspected at any
authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer as soon as possible.
■ When opening the cover of the positive (+) battery terminal
 P. 645
■ Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting.
■ To prevent 12-volt battery discharge
● Turn off the headlights and the audio system while the hybrid system is off.
● Turn off any unnecessary electrical components when the vehicle is running
at a low speed for an extended period, such as in heavy traffic.
■ When the 12-volt battery is removed or discharged
● Information stored in the ECU is cleared. When the 12-volt battery is
depleted, have the vehicle inspected at any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.
● Some systems may require initialization. (P. 792)
■ When removing the 12-volt battery terminals
When the 12-volt battery terminals are removed, the information stored in the
ECU is cleared. Before removing the 12-volt battery terminals, contact any
authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
■ Charging the 12-volt battery
The electricity stored in the 12-volt battery will discharge gradually even when
the vehicle is not in use, due to natural discharge and the draining effects of
certain electrical appliances. If the vehicle is left for a long time, the 12-volt
battery may discharge, and the hybrid system may be unable to start. (The
12-volt battery recharges automatically while the hybrid system is operating.)
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7598-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
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When trouble arises
WARNING
■ When removing the 12-volt battery terminals
Always remove the negative (-) terminal first. If the positive (+) terminal con-
tacts any metal in the surrounding area when the positive (+) terminal is
removed, a spark may occur, leading to a fire in addition to electrical shocks
and death or serious injury.
■ Avoiding 12-volt battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flam-
mable gas that may be emitted from the 12-volt battery:
● Make sure each jumper cable is connected to the correct terminal and that
it is not unintentionally in contact with any other than the intended terminal.
● Do not allow the other end of the jumper cable connected to the “+” termi-
nal to come into contact with any other parts or metal surfaces in the area,
such as brackets or unpainted metal.
● Do not allow the + and - clamps of the jumper cables to come into contact
with each other.
● Do not smoke, use matches, cigarette lighters or allow open flame near
the 12-volt battery.
■ 12-volt battery precautions
The 12-volt battery contains poisonous and corrosive acidic electrolyte,
while related parts contain lead and lead compounds. Observe the following
precautions when handling the 12-volt battery:
● When working with the 12-volt battery, always wear safety glasses and
take care not to allow any battery fluids (acid) to come into contact with
skin, clothing or the vehicle body.
● Do not lean over the 12-volt battery.
● In the event that battery fluid comes into contact with the skin or eyes,
immediately wash the affected area with water and seek medical attention.
Place a wet sponge or cloth over the affected area until medical attention
can be received.
● Always wash your hands after handling the 12-volt battery support, termi-
nals, and other battery-related parts.
● Do not allow children near the 12-volt battery.

7618-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
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When trouble arises
If your vehicle overheats
■If the high coolant temperature warning light comes on or
flashes
Stop the vehicle in a safe place and turn off the air conditioning
system, and then stop the hybrid system.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the hybrid system has cooled down sufficiently, inspect the
hoses and radiator core (radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant
leaks, immediately contact
any authorized Toyota retailer
or Toyota authorized repairer,
or any reliable repairer.
The following may indicate that your vehicle is overheating.
● The high coolant temperature warning light (P. 716) comes on
or flashes, or a loss of hybrid system power is experienced. (For
example, the vehicle speed does not increase.)
● “Hybrid System Overheated” is shown on the multi-information
display.
● Steam comes out from under the hood.
Correction procedures
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7799-1. Specifications
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
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Vehicle specifications
Ty pe A
Ty pe B
Tires and wheels
Tire size195/65R15 91H
Tire inflation pressure
(Recommended cold tire
inflation pressure)Front250 kPa (2.5 kgf/cm2 or bar, 36 psi)
Rear240 kPa (2.4 kgf/cm2 or bar, 35 psi)
Wheel size15  6 1/2J
Wheel nut torque103 N•m (10.5 kgf•m, 76 ft•lbf)
Tire size215/45R17 87W
Tire inflation pressure
(Recommended cold tire
inflation pressure)Front230 kPa (2.3 kgf/cm2 or bar, 33 psi)
Rear220 kPa (2.2 kgf/cm2 or bar, 32 psi)
Wheel size17  7J
Wheel nut torque103 N•m (10.5 kgf•m, 76 ft•lbf)
Light bulbs
Light bulbsWTyp e
ExteriorBack-up lights16A
Interior
Vanity lights8A
Front interior/personal lights5A
Rear interior light8B
Door courtesy lights5A
Luggage compartment light5A
A: Wedge base bulbs (clear)
B: Double end bulbs

7809-1. Specifications
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Fuel information
■Use of ethanol blended gasoline in a gasoline engine
Toyota allows the use of ethanol blended gasoline where the ethanol content
is up to 10%. Make sure that the ethanol blended gasoline to be used has a
Research Octane Number that follows the above.
■If your engine knocks
●Consult any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer.
●You may occasionally notice light knocking for a short time while accelerat-
ing or driving uphill. This is normal and there is no need for concern.
When you find these types of fuel label at the gas station, use
only the fuel with one of the following labels.

EU area:
You must only use unleaded gasoline conforming to European
standard EN228.
Select unleaded gasoline with a Research Octane Number of 95
or higher for optimum engine performance.
Except EU area:
You must only use unleaded gasoline.
Select unleaded gasoline with a Research Octane Number of 95
or higher for optimum engine performance.

7869-2. Customization
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
■Automatic light control system (P. 387)
■AHS (Adaptive High-beam System) (P. 391)
*: Only high beam will be turned on or off.
FunctionDefault
settingCustomized
setting
Light sensor sensitivityLevel 0Level -2 to 2–OO
Time elapsed before head-
lights turn off (follow me home
system)
30 seconds
60 seconds
––O90 seconds
120 seconds
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FunctionDefault settingCustomized
setting
Adaptive High-beam SystemOnOff*––O
Clearance between a vehicle
ahead and the shaded high
beams
Standard
Narrow
––O
Wide
Adaptive adjustment of the
high-beam brightness and illu-
minated area according to
vehicle speedApproximately
120 km/h
(75 mph) or
more
Approximately
100 km/h
(63 mph) or
more
––OApproximately
80 km/h
(50 mph) or
more
Intensity adjustment of the
high beams when driving
around a curve (illuminates
the area in the direction vehi-
cle is turning more brightly)
OnOff––O
Projection distance adjust-
ment of the low beams
according to the distance to a
preceding vehicle
OnOff––O
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