2022 TOYOTA PRIUS PLUG-IN HYBRID check engine

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Prius Plug-in Hybrid_OM_OM47E75E_(EE)
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7-1. Maintenance and care
Cleaning and protecting
the vehicle exterior ..........566
Cleaning and protecting
the vehicle interior ...........572
7-2. Maintenance
Maintenance
requirements....................578
7-3. Do-it-yourself maintenance
Do-it-yourself service
precautions ......................581
Hood ..................................584
Positioning a floor jack .......586
Engine compartment..........587
Tires ...................................600
Tire inflation pressure ........608
Wheels ...............................610
Replacing the tire ...............612
Air conditioning filter ..........624
Wiper insert
replacement .....................628
Electronic key battery ........631
Checking and replacing
fuses ................................634
Light bulbs .........................638
8-1. Essential information
Emergency flashers .......... 646
If your vehicle has to
be stopped in an
emergency ...................... 647
If the vehicle is submerged
or water on the road
is rising ............................ 648
8-2. Steps to take in an
emergency
If your vehicle needs
to be towed ..................... 650
If you think something is
wrong .............................. 656
If a warning light turns on
or a warning buzzer
sounds ............................ 657
If a warning message is
displayed ......................... 665
If you have a flat tire .......... 673
If the hybrid system will
not start ........................... 691
If the electronic key does
not operate properly ........ 693
If the 12-volt battery is
discharged ...................... 697
If your vehicle
overheats ........................ 703
If the vehicle becomes
stuck................................ 708
7Maintenance and care8When trouble arises

15Pictorial index
Prius Plug-in Hybrid_OM_OM47E75E_(EE)Windshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 348
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . P. 516
Precautions against car wash . . . . . . . . . . . . . . . . . . . . . . . . . P. 568
Replacing the wiper insert . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 628
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 351
Refueling method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 351
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 714
Charging port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 111
Charging method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 142
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 600
Replacing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 612
Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 721
Winter tires/tire chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 516
Checking/rotation/tire pressure warning system . . . . . . . . . . . P. 600
Coping with flat tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 673
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 584
Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 584
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 715
Coping with overheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 703
Headlights/front position lights/
daytime running lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 337
Front fog lights/rear fog lights . . . . . . . . . . . . . . . . . . . . . . . P. 347
Turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 335
Tail lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 337
License plate lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 337
Back-up lights
Shifting the shift position to R . . . . . . . . . . . . . . . . . . . . . . . . . P. 329
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Light bulbs of the exterior lights for driving
(Replacing method: P. 638, Watts: P. 721)
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852-1. Plug-in hybrid system
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Plug-in hybrid system
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
The plug-in hybrid system operates in the following modes.
The multi-information display can be used to check which mode the plug-in
hybrid system is currently being driven in. (P. 220)
EV mode
When a sufficient amount of electricity is remaining after
charging
*1, EV driving is performed using electricity stored in the
hybrid battery (traction battery).
*2
When in EV mode, the EV drive mode indicator illuminates.
*1: The amount of remaining charge can be checked on the multi-informa-
tion display etc. (P. 232)
*2: Depending on the situation, EV driving may be canceled and both gaso-
line engine and electric motor are used. (P. 94)
Plug-in hybrid system operation mode
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862-1. Plug-in hybrid system
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
EV City mode (P. 8 8 )
When a sufficient amount of electricity for EV driving is remaining in
the hybrid battery (traction battery)
*1, the operation mode can be
switched to EV City mode.
EV City mode limits motor output and minimizes the operation of
the gasoline engine.
*2 Therefore, the vehicle can be driven with
only electric motor (traction motor) in city areas, etc.
When in EV City mode, the EV City mode indicator illuminates.
*1: The amount of remaining charge can be checked on the multi-informa-
tion display etc. (P. 232)
*2: When acceleration is required, fully depress the accelerator pedal to
start the gasoline engine.
HV mode
When in HV mode, the vehicle is driven using both the gasoline
engine and electric motor (traction motor). (P. 9 2 )
OIf electricity needed for EV driving in EV mode is not remaining,
the operation mode will be automatically switched to HV mode.
OThe operation mode can be switched to HV mode at any timing
by operating the switch to keep electricity for EV driving etc.
*
(P. 88). Switching to HV mode when driving on a highway or
when driving uphill is recommended in order to conserve battery
power.
When in HV mode, the EV drive mode indicator and EV City mode indi-
cator turn off.
*: The EV driving range may reduce even after switching to HV mode.
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912-1. Plug-in hybrid system
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Plug-in hybrid system
Prius Plug-in Hybrid_OM_OM47E75E_(EE)Q
When in EV mode
In EV mode, EV driving (driving using only the electric motor)
* is
possible. However, depending on the situation, EV driving may be
canceled and both gasoline engine and electric motor are used
(P. 94). Also, if a little electricity is remaining in the hybrid battery
(traction battery), HV mode is automatically selected. To drive in EV
mode long, observe the followings.
OAvoid sudden acceleration and sudden deceleration, and be sure
to drive smoothly.
If you repeatedly accelerate, the hybrid battery (traction battery)
charge will deplete quickly. Also, EV driving may be canceled by
rapid acceleration or vehicle speed.
ORestrain your speed as much as possible. The distance that can
be driven in EV mode will reduce considerably at high speeds.
*: The EV driving range can be checked using the multi-information dis-
play etc. (P. 215, 231, 238, 255)
Q
When in EV City mode
In EV City mode, EV driving (driving using only the electric motor) is
possible.
*1
OMotor output is limited at the same level unless the accelerator
pedal is fully depressed.
When it is necessary to accelerate the vehicle, depress the
accelerator pedal completely or cancel EV City mode as needed.
OIn the following situations, EV City mode is automatically can-
celed.
*2
• When driving in EV driving is not possible. (P. 9 4 )
• When Dynamic radar cruise control with full-speed range is
activated.
• When the accelerator pedal is fully depressed.
*1: The EV driving range can be checked using the multi-information dis-
play etc. (P. 215, 231, 238, 255)
*2: Depending on the circumstances, EV City mode may also be canceled
in situations other than those above.
Control when driving in each mode

942-1. Plug-in hybrid system
Prius Plug-in Hybrid_OM_OM47E75E_(EE)QAfter EV mode has switched to HV mode due to low hybrid battery (trac-
tion battery) charge
If the hybrid battery (traction battery) is regenerated by driving continuously
down a long slope, the EV driving range etc. will be displayed on the multi-
information display and EV mode will be automatically switched to.
If EV mode is not switched to even though EV driving range is being dis-
played, EV mode can be switched to by pressing the EV/HV mode selection
switch.
QRefilling fuel
Plug-in hybrid vehicles can be driven using electricity charged from an exter-
nal power source. However, as the gasoline engine is used depending on the
situation even if in EV mode, and the gasoline engine is provided on board as
a power source for driving in HV mode, it is needed to refueling the vehicle.
Check the fuel amount and refill immediately when the fuel level becomes
low. (P. 351)
QGasoline engine operation in EV mode
Even if there is a sufficient amount of electricity remaining in the hybrid bat-
tery (traction battery) and EV driving range (P. 215, 231, 238, 255) is being
displayed on the multi-information display etc., EV driving (driving using only
the electric motor) may be canceled and both gasoline engine and electric
motor are used depending on the situation (EV driving will be returned to
automatically after EV driving becomes possible again).
EV driving may be canceled automatically in the following circumstances:
OWhen vehicle speed is more than approximately 135 km/h (84 mph).
OWhen power is needed temporarily, for example when the accelerator pedal
is depressed firmly or when accelerating suddenly.
OWhen the temperature of the hybrid system is high.
The vehicle has been left in the sun, driven on a hill, driven at high speeds,
etc.
OWhen the temperature of the hybrid system is low.
OWhen the heater is switched on when the outside temperature is below
about -10C (14F).
OWhen the windshield defogger switch is pressed. (P. 527)
OWhen the system determines that the gasoline engine needs to be started.
The gasoline engine may also operate in circumstances other than those
listed above, depending on conditions.

952-1. Plug-in hybrid system
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Plug-in hybrid system
Prius Plug-in Hybrid_OM_OM47E75E_(EE)QConditions in which the gasoline engine may not stop
The gasoline engine starts and stops automatically. However, it may not stop
automatically in the following conditions
*:
ODuring gasoline engine warm-up
ODuring hybrid battery (traction battery) charging
OWhen the temperature of the hybrid battery (traction battery) is high or low
OWhen the windshield defogger switch is pressed. (P. 527)
*: Depending on the circumstances, the gasoline engine may also not stop
automatically in situations other than those above.
QIf the vehicle is not used for a long time
OThe 12-volt battery may discharge. In this event, charge the 12-volt battery.
(P. 594)
In order to prevent the hybrid battery (traction battery) from becoming
extremely low in charge, charge the hybrid battery (traction battery) from
external power source or start the hybrid system at least once every 2 or 3
months, and turn the power switch off after the gasoline engine has
stopped automatically. (If the gasoline engine does not start up even after
approximately 10 seconds have passed since the “READY” indicator came
on, the power switch can be turned to off without any further action.)
OWhen the vehicle is left with the charging cable connected, the electricity
consumption amount of the 12-volt battery increases due to controls, such
as the system checking, operating. When the charging cable is not needed,
immediately remove it from the vehicle.
OFor vehicles with solar charging system, please refer to P. 181.

1062-1. Plug-in hybrid system
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
XAccelerator pedal/brake pedal operation
ODrive your vehicle smoothly. Avoid abrupt acceleration and
deceleration. Gradual acceleration and deceleration will make
more effective use of the electric motor (traction motor) without
having to use gasoline engine power.
OAvoid repeated acceleration. Repeated acceleration consumes
hybrid battery (traction battery) power, resulting in poor fuel con-
sumption. Battery power can be restored by driving with the
accelerator pedal slightly released.
XWhen braking
Make sure to operate the brakes gently and a timely manner. A
greater amount of electrical energy can be regenerated when slow-
ing down.
XDelays
Repeated acceleration and deceleration, as well as long waits at
traffic lights, will lead to high fuel and electricity consumption.
Check traffic reports before leaving and avoid delays as much as
possible. When driving in a traffic jam, 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 exces-
sive electricity and fuel consumption.
XHighway driving
OControl and maintain the vehicle at a constant speed. Before
stopping at a toll booth or similar, allow plenty of time to release
the accelerator and gently apply the brakes. A greater amount of
electrical energy can be regenerated when slowing down.
OElectricity consumption will increase significantly when driving at
high speeds in EV mode. If there will be a long distance to the
next external charging point after leaving a freeway, it is recom-
mended to drive in HV mode while on the freeway and change to
EV mode after leaving the freeway.