ECU TOYOTA PRIUS 2022 Manual Online

6037-2. Steps to take in an emergency
PRIUS_OM_OM47F01U_(U)
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When trouble arises
■If “Shift System Malfunction See Owner’s Manual” is shown
Indicates a malfunction in the shift control system. Immediatel y have the sys-
tem inspected by your Toyota dealer.
The system may not operate properly.
■ If “Low 12-Volt Battery Apply Parking Brake Securely While Park ing See
Owner’s Manual” is shown
Indicates that the 12-volt battery charge is insufficient. Char ge or replace the
12-volt battery.
● When the message is shown, the hybrid system may not start or t he shift
position may not be changed normally. (Coping method: P. 606)
● After charging the 12-volt battery, the message may not go off until the shift
position is changed from P.
■ If “Shifting Unavailable Low 12-Volt Battery See Owner’s Manual ” is
shown
Indicates that the shift position cannot be changed because the voltage of the
12-volt battery drops. Charge or replace the 12-volt battery.
(Coping method in the case the 12-volt battery is discharged: P. 646)
■ If “Hybrid System Overheated. Reduced Output Power.” is shown
The message may be shown when driving under severe operating co nditions.
(For example, when driving up a long steep hill or driving up a steep hill in
reverse.)
Coping method: P. 652
■ If “Maintenance Required for Traction Battery Cooling Parts See Owner’s
Manual” is shown
The filter may be clogged, the air intake vent may be blocked or there may be
a gap in the duct.
● If the air intake vent is dirty, refer to P. 546 for information on how to clean
the air intake vent.
● If the message is shown when the air intake vent is not dirty, have the vehi-
cle inspected by your Toyota dealer.
■ If “Traction Battery Needs to be Protected Refrain From the Use of
Position” is shown
This message may be displayed when the shift position is in N.
As the hybrid battery (traction battery) can not be charged when the shift
position is in N, shift the shift position to P when the vehicle is stopped.
■ If “Traction Battery Needs to be Protected Shift into to Resta rt” is
shown
This message is displayed when the hybrid battery (traction battery) charge
has become extremely low because the vehicle has been left with the N shift
position selected for a certain amount of time.
When operating the vehicle, shift to P and restart the hybrid s ystem.

6127-2. Steps to take in an emergency
PRIUS_OM_OM47F01U_(U)
Pull up the handle to open the
deck board.
Secure the deck board using
the grocery bag hooks.
( P. 463)
Take out the emergency t ire puncture repair kit.
2WD models: If the luggage cover (if equipped) is stowed, turn over the
tonneau cover to take out the emergency tire puncture repair ki t.
Taking out the emergency tire puncture repair kit
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2
3
2WD modelsAWD models

6137-2. Steps to take in an emergency
PRIUS_OM_OM47F01U_(U)
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When trouble arises
■Taking out the jack
Unhook the tightening strap and take out the jack.
■Storing the jack
Place the jack in the same direction as the mark next to the storage
space.
2WD models AWD models
2WD modelsAWD models
WARNING
■After using the tools and jack
Before driving, make sure all the tools and jack are securely i n place in
their storage location to reduce the possibility of personal in jury during a
collision or sudden braking.

6167-2. Steps to take in an emergency
PRIUS_OM_OM47F01U_(U)
Connect the power plug to the
power outlet socket. (P. 468)
Connect the bottle to the com-
pressor.
As shown in the illustration, insert
the bottle securely into the com-
pressor until the upper side of the
mark on the bottle is aligned with
the upper end of the notch.
Attach the sticker provided with
the tire puncture repair kit to a
position easily seen from the
driver’s seat.
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6247-2. Steps to take in an emergency
PRIUS_OM_OM47F01U_(U)
WARNING
■When fixing the flat tire
●Stop your vehicle in a safe and flat area.
●Do not touch the wheels or the area around the brakes immediate ly
after the vehicle has been driven.
After the vehicle has been driven, the wheels and the area arou nd the
brakes may be extremely hot. Touching these areas with hands, f eet or
other body parts may result in burns.
●Connect the valve and hose securely with the tire installed on the vehi-
cle. If the hose is not properly connected to the valve, air le akage may
occur as sealant may be sprayed out.
●If the hose comes off the valve while inflating the tire, there is a risk
that the hose will move abruptly due to air pressure.
●After inflation of the tire has completed, the sealant may spla tter when
the hose is disconnec ted or some air is let out of the tire.
●Follow the operation procedure to repair the tire. If the proce dures not
followed, the sealant may spray out.
●Keep back from the tire while it is being repaired, as there is a chance
of it bursting while the repair operation is being performed. I f you
notice any cracks or deformation of the tire, turn off the compressor
switch and stop the repair operation immediately.
●The repair kit may overheat if operated for a long period of ti me. Do not
operate the repair kit continuous ly for more than 40 minutes.
●Parts of the repair kit become hot during operation. Be careful handling
the repair kit during and after operation. Do not touch the met al part
connecting the bottle and the compressor. It will be extremely hot.
●Do not attach the vehicle speed warning sticker to an area other than
the one indicated. If the sticker is attached to an area where an SRS
airbag is located, such as the pad of the steering wheel, it ma y prevent
the SRS airbag from operating properly.

6317-2. Steps to take in an emergency
PRIUS_OM_OM47F01U_(U)
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When trouble arises
Pull up the handle to open the
deck board.
Secure the deck board using
the grocery bag hooks.
( P. 463)
Unhook the tightening strap
and take out the jack.
Taking out the jack
1
2
3

6327-2. Steps to take in an emergency
PRIUS_OM_OM47F01U_(U)
Open and secure the deck board. (P. 631)
Remove the tray.
Vehicles with compact spare tire: If the luggage cover is stowe d
(  P. 466), remove both the tray and luggage cover.
Loosen the center fastener that
secures the spare tire.
Taking out the spare tire
1
2
Vehicles with compact spare
tireVehicles with full-size spare
tire
3
WARNING
■When storing the spare tire
Be careful not to catch fingers or other body parts between the spare
tire and the body of the vehicle.

6397-2. Steps to take in an emergency
PRIUS_OM_OM47F01U_(U)
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When trouble arises
WARNING
■When using the compact spare tire (if equipped)
●Remember that the spare tire provided is specifically designed for use
with your vehicle. Do not use yo ur spare tire on another vehicle.
●Do not use more than one compact spare tire simultaneously.
●Replace the spare tire with a st andard tire as soon as possible .
●Avoid sudden acceleration, abrupt steering, sudden braking and shift-
ing operations that cause sudden engine braking.
■When the compact spare tire is attached (if equipped)
The vehicle speed may not be co rrectly detected, and the following sys-
tems may not operate correctly:
Also, not only can the following system not be utilized fully, but it may
even negatively affect the drive-train components:
• E-Four (Electric Four wheel drive system)
*
*
: If equipped
■Speed limit when using the co mpact spare tire (if equipped)
Do not drive at speeds in excess of 50 mph (80 km/h) when a com pact
spare tire is installed on the vehicle.
The compact spare tire is not designed for driving at high spee ds. Fail-
ure to observe this precaution may lead to an accident causing death or
serious injury.
■After using the tools and jack
Before driving, make sure all t he tools and jack are securely i n place in
their storage location to reduce the possibility of personal in jury during a
collision or sudden braking.
• ABS & Brake assist
• VSC
• TRAC
• EPS
• AHB (Automatic High Beam)
*
• PCS (Pre-Collision System)*
• LTA (Lane Tracing Assist)*
• Dynamic radar cruise control with full-speed range
*
• Cruise control*
• BSM (Blind Spot Monitor)*
• Intuitive parking assist*
• Parking Support Brake function*
• S-APGS (Simple Advanced Parking Guidance System)
*
• Rear view monitor system
• Navigation system
*

6487-2. Steps to take in an emergency
PRIUS_OM_OM47F01U_(U)
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 yo ur
Toyota dealer as soon as possible.
■ When opening the cover of the positive (+) battery terminal
P. 521
■ 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 s ystem 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 batt ery is
depleted, have the vehicle inspected at your Toyota dealer.
● Some systems may require initialization. ( P. 697)
■ When removing the 12-vo lt 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 your
Toyota dealer.
■ Charging the 12-volt battery
The electricity stored in the 12-volt battery will discharge gr adually 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 automatically while the hybrid system is operating.)
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PRIUS_OM_OM47F01U_(U)
6858-1. Specifications
8
Vehicle specifications
*: Table 1  Occupant loading and distribution for vehicle normal load for
various designated seating capacities
Tread separationPulling away of the tread from the tire carcass
Treadwear indicators
(TWI)The projections within the principal grooves
designed to give a visual indication of the
degrees of wear of the tread
Wheel-holding fixtureThe fixture used to hold the wheel and tire
assembly securely during testing
Tire related termMeaning
Designated seating
capacity, Number of occupantsVehicle normal load,
Number of occupantsOccupant distribution
in a normally loaded vehicle
2 through 422 in front
5 through 1032 in front, 1 in second seat
11 through 155
2 in front, 1 in second
seat, 1 in third seat, 1 in fourth seat
16 through 207
2 in front, 2 in second
seat, 2 in third seat, 1
in fourth seat