check engine TOYOTA PRIUS PLUG-IN HYBRID 2022 Owner's Manual

5897-3. Do-it-yourself maintenance
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
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Maintenance and care
QAdding engine oil
If the oil level is below or near
the low level mark, add engine
oil of the same type as that
already in the engine.
Make sure to check the oil type and prepare the items needed
before adding oil.
Remove the oil filler cap by turning it counterclockwise.
Add engine oil slowly, checking the dipstick.
Install the oil filler cap by turning it clockwise.
Q Engine oil consumption
A certain amount of engine oil will be consumed while driving. In the following
situations, oil consumption may increase, and engine oil may ne ed to be
refilled in between oil maintenance intervals.
O When the engine is new, for example directly after purchasing the vehicle or
after replacing the engine
O If low quality oil or oil of an inappropriate viscosity is used
O When driving at high engine speeds or with a heavy load, or when driving
while accelerating or decelerating frequently
O When leaving the engine idling for a long time, or when driving frequently
through heavy traffic
Engine oil selection P. 715
Oil quantity (Low  Full)1.5 L (1.6 qt., 1.3 lmp. qt.)
ItemsClean funnel
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5907-3. Do-it-yourself maintenance
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
WARNING
QUsed engine oil
O Used engine oil contains potentially harmful contaminants which may
cause skin disorders such as inflammation and skin cancer, so c are
should be taken to avoid prolonged and repeated contact. To rem ove used
engine oil from your skin, wash thoroughly with soap and water.
O Dispose of used oil and filters only in a safe and acceptable manner. Do
not dispose of used oil and filters in household trash, in sewe rs or onto the
ground. Call any authorized Toyota retailer or Toyota authorize d repairer,
or any reliable repairer, service station or auto parts store f or information
concerning recycling or disposal.
O Do not leave used engine oil within the reach of children.
NOTICE
QTo prevent serious engine damage
Check the oil level on a regular basis.
Q When replacing the engine oil
O Be careful not to spill engine oil on the vehicle components.
O Avoid overfilling, or the engine could be damaged.
O Check the oil level on the dipstick every time you refill the vehicle.
O Be sure the engine oil filler cap is properly tightened.

5927-3. Do-it-yourself maintenance
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
QCoolant selection
Only use “Toyota Super Long Life Coolant” or a similar high qua lity ethylene
glycol based non-silicate, non-am ine, non-nitrite, and non-borate coolant with
long-life hybrid organic acid technology.
“Toyota Super Long Life Coolant” is a mixture of 50% coolant an d 50% deion-
ized water. (Minimum temperature: -35 C [-31F])
For more details about coolant, contact any authorized Toyota r etailer or
Toyota authorized repairer, or any reliable repairer.
Q If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine/power control unit c oolant reservoir
caps, drain cock and water pump.
If you cannot find a leak, have any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer, test the cap and chec k for leaks in the
cooling system.
WARNING
Q When the hybrid system is hot
Do not remove the engine/power control unit coolant reservoir c aps.
The cooling system may be under pressure and may spray hot cool ant if the
cap is removed, causing serious injuries, such as burns.
NOTICE
Q When adding coolant
Coolant is neither plain water nor straight antifreeze. The correct mixture of
water and antifreeze must be used to provide proper lubrication , corrosion
protection and cooling. Be sure to read the antifreeze or coola nt label.
Q If you spill coolant
Be sure to wash it off with water to prevent it from damaging p arts or paint.

5937-3. Do-it-yourself maintenance
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
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Maintenance and care
Check the radiator and condenser and clear away any foreign objects.
If either of the above parts is extremely dirty or you are not sure of
their condition, have your vehicle inspected by any authorized To y o t a
retailer or Toyota authorized repairer, or any reliable repaire r.
Radiator and condenser
WARNING
QWhen the hybrid system is hot
Do not touch the radiator or condenser as they may be hot and c ause seri-
ous injuries, such as burns.
Q When the electric cooling fans are operating
Do not touch the engine compartment.
With the power switch in ON mode, the electric cooling fans may automati-
cally start to run if the air conditioning is on and/or the coo lant temperature
is high. Be sure the power switch is off when working near the electric cool-
ing fans or radiator grille.

6347-3. Do-it-yourself maintenance
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
Checking and replacing fuses
Turn the power switch off.
Confirm that the charging connector is not connected. Also, do not use the
Remote Air Conditioning System during the procedure.
Open the fuse box cover.
Engine compartment type A fuse box
While pushing the 2 claws, lift
up the cover.
When closing the cover, make
sure to attach the 2 claws.
Engine compartment type B fuse box
While pushing the 3 claws, lift
up the cover.
When closing the cover, make
sure to attach the 3 claws.
If any of the electrical components do not operate, a fuse may
have blown. If this happens, check and replace the fuses as nec -
essary.
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6688-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
O If a message or image about an open/close state of a part or replenishment
of a consumable is shown
Confirm the part indicated by the multi-information display or a warning light,
and then perform the coping method such as closing the open doo r or
replenishing a consumable.
Q If “See Owner’s Manual” is shown
O If “Braking Power Low Stop in a Safe Place See Owner’s Manual” is shown,
this may be a malfunction. Immediately stop the vehicle in a sa fe place and
contact any authorized Toyota retailer or Toyota authorized rep airer, or any
reliable repairer. Continuing to drive the vehicle may be dange rous.
O If “Engine Oil Pressure Low” is shown, this may be a malfunction. Immedi-
ately stop the vehicle in a safe place and contact any authoriz ed Toyota
retailer or Toyota authorized repairer, or any reliable repaire r.
O If the following messages are shown, there may be a malfunction. Immedi-
ately have the vehicle inspected by any authorized Toyota retai ler or Toyota
authorized repairer, or any reliable repairer.
• “Plug-in charging system malfunction.”
• “Hybrid System Malfunction”
• “Check Engine”
• “Hybrid Battery System Malfunction”
• “Accelerator System Malfunction”
• “Smart Entry & Start System Malfunction See Owner’s Manual”
O If “Exhaust Filter Full See Owner’s Manual” is shown on the multi-informa-
tion display is shown, follow the instruction. ( P. 5 0 8 )
Q If “Shift System Not Active Apply Parking Brake Securely While Parking
See Owner’s Manual” is shown
Indicates a temporary operation failure or malfunction in the s hift control sys-
tem. Immediately have the vehicle inspected by any authorized T oyota
retailer or Toyota authorized repairer, or any reliable repaire r.
When the message is shown, the hybrid system may not be started or the
shift position may not be changed normally. (Coping method: P. 672)
Q If “Shift System Malfunction Apply Parking Brake Securely While Park-
ing See Owner’s Manual” is shown
Indicates a malfunction in the shift control system. Immediatel y have the vehi-
cle inspected by any authorized Toyota retailer or Toyota autho rized repairer,
or any reliable repairer.
When the message is shown, the hybrid system may not be started or the
shift position may not be changed normally. (Coping method: P. 672)

6718-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
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When trouble arises
QIf “Auto Power OFF to Conserve Battery” is shown
The power switch has been turned off by the automatic power off function.
When starting the hybrid system next time, operate the hybrid s ystem for
approximately 5 minutes to recharge the 12-volt battery.
Q If “Engine Oil Level Low Add or Replace” is displayed
The engine oil level may be low. Check the level of the engine oil, and add
engine oil if necessary. This message may be displayed if the v ehicle is
stopped on a slope. Move the vehicle to a level surface and che ck if the mes-
sage disappears.
Q If “Accelerator and Brake Pedals Pressed Simultaneously” is shown
The accelerator and brake pedals are being depressed simultaneo usly.
( P. 310)
Release the accelerator pedal and depress the brake pedal.
Q If a message that indicates the malfunction of front camera is displayed
The following systems may be suspended until the problem shown in the
message is resolved. ( P. 366, 657)
O PCS (Pre-Collision System)
O LTA (Lane Tracing Assist)
O AHS (Adaptive High-beam System)
O RSA (Road Sign Assist)
O Dynamic radar cruise control with full-speed range
Q If a message that indicates the malfunction of radar sensor is displayed
The following systems may be suspended until the problem shown in the
message is resolved. ( P. 366, 657)
O PCS (Pre-Collision System)
O LTA (Lane Tracing Assist)
O Dynamic radar cruise control with full-speed range
Q If “Radar Cruise Control Unavailable See Owner’s Manual” is shown
The dynamic radar cruise control with full-speed range system i s suspended
temporarily or until the problem shown in the message is resolv ed. (causes
and coping methods: P. 366)
Q If “Radar Cruise Control Unavailable” is shown
The dynamic radar cruise control with full-speed range system c annot be
used temporarily. Use the system when it becomes available agai n.

6998-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47E75E_(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 insert ed
securely.
Once the hybrid system starts, have the vehicle inspected at an y
authorized Toyota retailer or Toyota authorized repairer, or an y reliable
repairer as soon as possible.
Q When opening the cover of the positive (+) battery terminal
 P. 595
Q Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting.
Q To prevent 12-volt battery discharge
O Turn off the headlights and the audio system while the hybrid system is off.
O Turn off any unnecessary electrical components when the vehicle is running
at a low speed for an extended period, such as in heavy traffic .
Q When the 12-volt battery is removed or discharged
O Information stored in the ECU is cleared. When the 12-volt battery is
depleted, have the vehicle inspected at any authorized Toyota r etailer or
Toyota authorized repairer, or any reliable repairer.
O Some systems may require initialization. (P. 734)
Q 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 an y reliable
repairer.
Q 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 dra ining effects of
certain electrical appliances. If the vehicle is left for a lon g time, the 12-volt
battery may discharge, and the hybrid system may be unable to s tart. (The
12-volt battery recharges automat ically while the hybrid system is operating.)
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7068-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
After stopping the hybrid system and waiting for 5 minutes or
more, start the hybrid system again and check if “Hybrid System
Overheated” is shown on the multi-information display.
If the message does not disappear:
Stop the hybrid system and contact any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repaire r.
If the message is not displayed:
The hybrid system temperature has dropped and the vehicle may
be driven normally.
However, if the message appears again frequently, contact any a utho-
rized Toyota retailer or Toyota authorized repairer, or any rel iable
repairer.
WARNING
Q To prevent an accident or injury when inspecting under the hood of
your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
O If steam is seen coming from under the hood, do not open the hood until
the steam has subsided. The engine compartment may be very hot.
O After the hybrid system has been turned off, check that the “Accessory”,
“Ignition ON” or mileage display ( P. 213) on the main display and the
“READY” indicator are off.
When the hybrid system is operating, the gasoline engine may au tomati-
cally start, or the cooling fans may suddenly operate even if t he gasoline
engine stops. Do not touch or approach rotating parts such as t he fan,
which may lead to fingers or clothing (especially a tie, a scar f or a muffler)
getting caught, resulting in serious injury.
O Do not loosen the coolant reservoir caps while the hybrid system and radi-
ator are hot.
High temperature steam or coolant could spray out.
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7159-1. Specifications
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
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Vehicle specifications
Generation/traction motor
Traction motor
QOil capacity (Drain and refill [Reference*])
*: The engine oil capacity is a reference quantity to be used when changing
the engine oil. Park the vehicle on level ground. After warming up the
engine and turning off the hybrid system, wait more than 5 minutes, and
check the oil level on the dipstick.
Electric motor (generation motor/traction motor)
Ty p ePermanent magnet synchronous motor
Maximum output22.5 kW
Maximum torque40 N•m (4.1 kgf•m, 29.5 ft•lbf)
Ty p ePermanent magnet synchronous motor
Maximum output53 kW
Maximum torque163 N•m (16.6 kgf•m, 120.2 ft•lbf)
Hybrid battery (traction battery)
Ty p eLithium-ion battery
Voltage3.7 V/cell
Capacity25 Ah
Quantity95 cells
Nominal voltage351.5 V
Lubrication system
With filter4.2 L (4.4 qt., 3.7 Imp.qt.)
Without filter3.9 L (4.1 qt., 3.4 Imp.qt.)