ECU TOYOTA C-HR 2022 Workshop Manual

1151-3. Emergency assistance
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For safety and security
C-HR_HV_OM_Europe_OM10720E

1171-3. Emergency assistance
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For safety and security
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1191-4. Hybrid system
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For safety and security
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◆When stopped/during start off
The gasoline engine stops* when the vehicle is stopped. During
start off, the electric motor (traction motor) drives the vehic le. At
slow speeds or when traveling down a gentle slope, the engine i s
stopped* and the electric motor (traction motor) is used.
When shift lever is in N, the hybrid battery (traction battery) is not
being charged.
*: When the hybrid battery (traction battery) requires charging o r the engine
is warming up, etc., the gasoline engine will not automatically stop.
( P. 120)
◆During normal driving
The gasoline engine is predominantly used. The electric motor
(traction motor) charges the hybrid battery (traction battery) as nec-
essary.
◆When accelerating sharply
When the accelerator pedal is depressed heavily, the power of t he
hybrid battery (traction battery) is added to that of the gasol ine
engine via the electric motor (traction motor).
◆When braking (regenerative braking)
The wheels operate the electric motor (traction motor) as a pow er
generator, and the hybrid battery (traction battery) is charged .
When driving with the gasoline engine stopped, a sound, which
changes in accordance with the driving speed, will be played in order
to warn people nearby of the vehicle’s approach. The sound will stop
when the vehicle speed exceeds approximately 25 km/h (15 mph).
Acoustic vehicle alerting system

1211-4. Hybrid system
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For safety and security
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■ Charging the 12-volt battery
 P. 752
■ After the 12-volt battery has discharged or when the terminal has been
removed and installed during exchange, etc.
The gasoline engine may not stop even if the vehicle is being d riven by the
hybrid battery (traction battery). If this continues for a few days, contact any
authorized Toyota retailer or Toyota authorized repairer, or an y reliable
repairer.
■ Sounds and vibrations specific to a Hybrid Electric Vehicle
There may be no engine sound or vibration even though the vehic le is able to
move with the “READY” indicator is illuminated. For safety, app ly the parking
brake and make sure to shift the shift lever to P when parked.
The following sounds or vibrations may occur when the hybrid sy stem is
operating and are not a malfunction:
● Motor sounds may be heard from the engine compartment.
● Sounds may be heard from the hybrid battery (traction battery) when the
hybrid system starts or stops.
● Relay operating sounds such as a snap or soft clank will be emitted from the
hybrid battery (traction battery), behind the rear seats, when the hybrid sys-
tem is started or stopped.
● Sounds from the hybrid system may be heard when the back door is open.
● Sounds may be heard from the transmission when the gasoline engine
starts or stops, when driving at low speeds, or during idling.
● Engine sounds may be heard when accelerating sharply.
● Sounds may be heard due to regenerative braking when the brake pedal is
depressed or as the accelerator pedal is released.
● Vibration may be felt when the gasoline engine starts or stops.
● Cooling fan sounds may be heard from the air intake vent. (P. 124)

123
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1-4. Hybrid system
For safety and security
C-HR_HV_OM_Europe_OM10720E
Hybrid system precautions
The illustration is an example for explanation and may differ from the
actual item.
Take care when handling the hybrid system, as it is a high volt -
age system (about 600 V*1 or 650 V*2 at maximum) as well as
contains parts that become extremely hot when the hybrid sys-
tem is operating. Obey the warning labels attached to the vehi-
cle.
*1: 2ZR-FXE engine
*2: M20A-FXS engine
Warning label
Service plug
Hybrid battery (traction battery)
High voltage cables (orange)
Electric motor (traction motor)
Power control unit
Air conditioning compressor

1251-4. Hybrid system
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For safety and security
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■If a warning light comes on, a warning message is displayed, or the
12-volt battery is disconnected
The hybrid system may not start. In this case, try to start the system again. If
the “READY” indicator does not come on, contact any authorized To y o t a
retailer or Toyota authorized repairer, or any reliable repaire r.
■ Running out of fuel
When the vehicle has run out of fuel and the hybrid system cann ot be started,
refuel the vehicle with at leas t enough gasoline to make the low fuel level
warning light ( P. 685) go off. If there is only a small amount of fuel, the
hybrid system may not be able to start. (The standard amount of fuel is about
7.5 L [2.0 gal., 1.7 Imp.gal.], when the vehicle is on a level surface. This value
may vary when the vehicle is on a slope. Add extra fuel when th e vehicle is
inclined.)
■ Electromagnetic waves
● High voltage parts and cables on Hybrid Electric Vehicles incorporate elec-
tromagnetic shielding, and therefore emit approximately the sam e amount
of electromagnetic waves as conventional gasoline powered vehic les or
home electronic appliances.
● Your vehicle may cause sound interference in some third party-produced
radio parts.
■ Hybrid battery (traction battery)
The hybrid battery (traction battery) has a limited service lif e. The lifespan of
the hybrid battery (traction battery) can change in accordance with driving
style and driving conditions.
■ Declaration of conformity
This model conforms to hydrogen emissions according to regulati on ECE100
(Battery electric vehicle safety).

1271-4. Hybrid system
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WARNING
■Road accident cautions
Observe the following precautions to reduce the risk of death o r serious
injury:
● Pull your vehicle off the road, apply the parking brake, shift the shift lever
to P, and turn the hybrid system off.
● Do not touch the high voltage parts, cables and connectors.
● If electric wires are exposed inside or outside your vehicle, an electric
shock may occur. Never touch exposed electric wires.
● 2ZR-FXE engine (for Guadelope, Martinique, F. Guiana and Greenland): If
a fluid leak occurs, do not touch the fluid as it may be strong alkaline elec-
trolyte from the hybrid battery (traction battery). If it comes into contact
with your skin or eyes, wash it off immediately with a large am ount of water
or, if possible, boric acid solution. Seek immediate medical at tention.
● 2ZR-FXE engine (except for Guadelope, Martinique, F. Guiana and
Greenland): Do not touch the batte ry if liquid is leaking from or adhering to
it. If electrolyte (carbonic-based organic electrolyte) from th e hybrid battery
(traction battery) comes into contact with the eyes or skin, it could cause
blindness or skin wounds. In the unlikely event that it comes i nto contact
with the eyes or skin, wash it of f immediately with a large amount of water,
and seek immediate medical attention.
● 2ZR-FXE engine (except for Guadelope, Martinique, F. Guiana and
Greenland): If electrolyte is leaking from the hybrid battery ( traction bat-
tery), do not approach the vehicle. Even in the unlikely event that the
hybrid battery (traction battery) is damaged, the internal cons truction of
the battery will prevent a large amount of electrolyte from lea king out.
However, any electrolyte that does leak out will give off a vap or. This vapor
is an irritant to skin and eyes and could cause acute poisoning if inhaled.
● 2ZR-FXE engine (except for Guadelope, Martinique, F. Guiana and
Greenland): Do not bring burning or high-temperature items close to the
electrolyte. The electrolyte may ignite and cause a fire.
● If a fire occurs in the Hybrid Electric Vehicle, leave the vehicle as soon as
possible. Never use a fire extinguisher that is not meant for e lectric fires.
Using even a small amount of water may be dangerous.
● If your vehicle needs to be towed, do so with front wheels raised. If the
wheels connected to the electric motor (traction motor) are on the ground
when towing, the motor may continue to generate electricity. Th is may
cause a fire. ( P. 674)
● Carefully inspect the ground under the vehicle. If you find that liquid has
leaked onto the ground, the fuel system may have been damaged. Leave
the vehicle as soon as possible.

1291-4. Hybrid system
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NOTICE
■Hybrid battery (traction battery) air intake vent
● Make sure not to block the air intake vent with anything, such as a seat
cover, plastic cover, or luggage. The hybrid battery (traction battery) may
overheat and be damaged.
● When dust, etc., has accumulated in the air intake vent, clean it with a vac-
uum cleaner to prevent the vent from clogging.
● Do not get water or foreign materials in the air intake vent as this may
cause a short circuit and damage the hybrid battery (traction b attery).
● Do not carry large amounts of water such as water cooler bottles in the
vehicle. If water spills onto the hybrid battery (traction batt ery), the battery
may be damaged. Have the vehicle inspected by any authorized To yota
retailer or Toyota authorized repairer, or any reliable repaire r.
● There is a filter installed to the air intake vent. When the filter remains
noticeably dirty even after cleaning the air intake vent, filte r cleaning or
replacement is recommended. For information regarding filter cl eaning or
replacement, refer to P. 640.
● If “Maintenance required for Traction battery cooling parts. See owner’s
manual.” is shown on the multi-information display, the air int ake vent and
filter may be clogged. Refer to P. 640 for information on how t o clean the
air intake vent.

1301-5. Theft deterrent system
C-HR_HV_OM_Europe_OM10720E
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.

1311-5. Theft deterrent system
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For safety and security
C-HR_HV_OM_Europe_OM10720E
■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