ECU TOYOTA C-HR 2023 Workshop Manual

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1-4. Hybrid system
For safety and security
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Hybrid system features
The illustration is an example for explanation and may differ from the
actual item.
Gasoline engine
Electric motor (traction motor)
Your vehicle is a Hybrid Electric Vehicle. It has characteristi cs
different from conventional vehicles. Be sure you are closely
familiar with the characteristics of your vehicle, and operate it
with care.
The hybrid system combines the use of a gasoline engine and
an electric motor (traction motor) according to driving condi-
tions, improving fuel efficiency and reducing exhaust emis-
sions.

1191-4. Hybrid system
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■Regenerative braking
● In the following situations, kinetic energy is converted to electric energy and
deceleration force can be obtained in conjunction with the rech arging of the
hybrid battery (traction battery).
• The accelerator pedal is released while driving with the shift lever in D, B
(2ZR-FXE engine) or S (M20A-FXS engine).
• The brake pedal is depressed while driving with the shift leve r in D, B
(2ZR-FXE engine) or S (M20A-FXS engine).
● While the GPF system (P. 529) is operating to regenerate the exhaust gas
filter, the hybrid battery (traction battery) may not be rechar ged.
■ EV indicator
■ Conditions 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*:
● During gasoline engine warm-up
● During hybrid battery (traction battery) charging
● When the temperature of the hybrid battery (traction battery) is high or low
● When the heater is switched on
*: Depending on the circumstances, the gasoline engine may also not stop
automatically in situations other than those above.
■ Charging the hybrid battery (traction battery)
As the gasoline engine charges the hybrid battery (traction bat tery), the bat-
tery does not need to be charged from an outside source. Howeve r, if t h e
vehicle is left parked for a long time the hybrid battery (trac tion battery) will
slowly discharge. For this reason, be sure to drive the vehicle at least once
every few months for at least 30 minutes or 16 km (10 miles). If the hybrid
battery (traction battery) becomes fully discharged and you are unable to start
the hybrid system, contact any authorized Toyota retailer or To yota authorized
repairer, or any r eliable repairer.
The EV indicator comes on when the
vehicle is driven using only the electric
motor (traction motor) or the gasoline
engine is stopped.

1211-4. Hybrid system
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■ Maintenance, repair, recycling, and disposal
Contact any authorized Toyota retailer or Toyota authorized rep airer, or any
reliable repairer regarding maintenance, repair, recycling and disposal. Do
not dispose of the vehicle yourself.
■ Acoustic vehicle alerting system
In the following cases, the acoustic vehicle alerting system ma y be difficult for
surrounding people to hear.
● In very noisy areas
● In the wind or the rain
Also, as the acoustic vehicle alerting system is installed on t he front of the
vehicle, it may be more difficult to hear from the rear of the vehicle compared
to the front.

1231-4. Hybrid system
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There is an air intake vent under
the right side of the rear seat for
the purpose of cooling the hybrid
battery (traction battery). If the
vent becomes blocked, it may
cause the input-output of the
hybrid battery (traction battery) to
be limited.
When a certain level of impact is detected by the impact sensor , the
emergency shut off system blocks the high voltage current and s tops
the fuel pump to minimize the risk of electrocution and fuel le akage. If
the emergency shut off system activates, your vehicle will not restart.
To restart the hybrid system, contact any authorized Toyota ret ailer or
Toyota authorized repairer, or any reliable repairer.
A message is automatically displayed when a malfunction occurs in
the hybrid system or an improper operation is attempted.
If a warning message is shown on
the multi-information display, read
the message and follow the
instructions.
Hybrid battery (traction battery) air intake vent
Emergency shut off system
Hybrid warning message

1251-4. Hybrid system
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WARNING
■High voltage precautions
This vehicle has high voltage DC and AC systems as well as a 12 -volt sys-
tem. DC and AC high voltage is very dangerous and can cause sev ere
burns and electric shock that may result in death or serious in jury.
● Never touch, disassemble, remove or replace the high voltage parts,
cables or their connectors.
● The hybrid system will become hot after starting as the system uses high
voltage. Be careful of both the high voltage and the high tempe rature, and
always obey the warning labels attached to the vehicle.
● Never try to open the service plug
access hole located under the right side
of the rear seat. The service plug is
used only when the vehicle is serviced
and is subject to high voltage.

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WARNING
■Hybrid battery (traction battery)
● 2ZR-FXE engine (except for Guadelope, Martinique, F. Guiana and
Greenland): Your vehicle contains a sealed lithium-ion battery.
● Never resell, hand over or modify the hybrid battery. To prevent accidents,
hybrid batteries that have been removed from a disposed vehicle are col-
lected through any authorized Toyota retailer or Toyota authori zed repairer,
or any reliable repairer. Do not dispose of the battery yoursel f.
Unless the battery is properly collected, the following may occ ur, resulting
in death or serious injury:
• The hybrid battery may be illegally disposed of or dumped, and it is haz-
ardous to the environment or someone may touch a high voltage p art,
resulting in an electric shock.
• The hybrid battery is intended to be used exclusively with you r Hybrid
Electric Vehicle. If the hybrid battery is used outside of your vehicle or
modified in any way, accidents such as electric shock, heat gen eration,
smoke generation, an explosion and electrolyte leakage may occur.
When reselling or handing over your vehicle, the possibility of an accident
is extremely high because the person receiving the vehicle may not be
aware of these dangers.
● If your vehicle is disposed of without the hybrid battery having been
removed, there is a danger of serious electric shock if high vo ltage parts,
cables and their connectors are touched. In the event that your vehicle
must be disposed of, the hybrid battery must be disposed of by any autho-
rized Toyota retailer or Toyota authorized repairer, or any rel iable repairer
or a qualified service shop. If the hybrid battery is not dispo sed of properly,
it may cause electric shock that can result in death or serious injury.

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1-5. Theft deterrent system
For safety and security
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Immobilizer system
The indicator light flashes after
the power switch has been turned
off to indicate that the system is
operating.
The indicator light stops flashing
after the power switch has been
turned to ACCESSORY or ON
mode to indicate that the system
has been canceled.
The vehicle’s keys have built-in transponder chips that prevent
the hybrid system from starting if a key has not been previousl y
registered in the vehicle’s on-board computer.
Never leave the keys inside the vehicle when you leave the vehi -
cle.
This system is designed to help prevent vehicle theft but does
not guarantee absolute security against all vehicle thefts.

1301-5. Theft deterrent system
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■System maintenance
The vehicle has a maintenance-free type immobilizer system.
■ Conditions that may cause the system to malfunction
● If the grip portion of the key is in contact with a metallic object
● If the key is in close proximity to or touching a key registered to the security
system (key with a built-in transponder chip) of another vehicl e

1311-5. Theft deterrent system
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■ Certification for the immobilizer system

1331-5. Theft deterrent system
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