cooling TOYOTA C-HR 2023 Owners Manual

1201-4. Hybrid system
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■ Charging the 12-volt battery
 P. 750
■ 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. 123)

1231-4. Hybrid system
1
For safety and security
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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

1281-4. 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. 638.
● 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. 638 for information on how t o clean the
air intake vent.

4314-5. Using the driving support systems
4
Driving
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●“ECO” mode
Helps the driver accelerate in an eco-friendly manner and
improve fuel economy through moderate throttle characteristics
and by controlling the operation of the air conditioning system
(heating/cooling).
When Eco mode is selected, the “ECO MODE” indicator will illumi -
nate on the multi-information display.
While the air conditioning is being used, the system automatica lly
switches to air conditioning eco mode ( P. 552), allowing for driving
that leads to even better fuel economy.
■ When canceling “ECO” mode/ “SPORT” mode
● Select the drive mode again. Also, “SPORT” mode will be canceled auto-
matically when the power switch is turned off.
● However, “NORMAL” mode and “ECO” mode will not be canceled automati-
cally until another drive mode is selected, even if the power s witch is turned
off.
■ Switching the drive mode when in EV drive mode
 P. 312

5384-6. Driving tips
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Hybrid Electric Vehicle driving tips
◆Using Eco drive mode
When using Eco drive mode, the torque corresponding to the acce l-
erator pedal depression amount can be generated more smoothly
than it is in normal conditions. In addition, the operation of the air
conditioning system (heating/cooling) will be minimized, improv ing
the fuel economy. ( P. 4 3 0 )
◆Use of Hybrid System Indicator
The Eco-friendly driving is possible by keeping the Hybrid Syst em
Indicator within Eco area. ( P. 166)
◆Shift lever operation
Shift the shift lever to D when stopped at a traffic light, or driving in
heavy traffic, etc. Shift the shift lever to P when parking. Wh en
using the N, there is no positive effect on fuel consumption. I n the
N, the gasoline engine operates but electricity cannot be gener -
ated. Also, when using the air conditioning system, etc., the h ybrid
battery (traction battery) power is consumed.
◆Accelerator pedal/brake pedal operation
● Drive your vehicle smoothly. Avoid abrupt acceleration and
deceleration. Gradual acceleration and deceleration will make
more effective use of the electric motor (traction motor) witho ut
having to use gasoline engine power.
● Avoid 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.
For economical and ecological driving, pay attention to the fol -
lowing points:

5485-1. Using the air conditioning system and defogger
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Press the .
The dehumidification function begins to operate. Air outlets an d fan
speed are automatically adjusted according to the temperature s et-
ting.
Adjust the temperature setting.
Press .
The cooling and dehumidification function switches between on a nd off
each time is pressed.
To stop the operation, press the .
■Automatic mode indicator
If the fan speed setting or air flow modes are operated, the au to-
matic mode indicator goes off. However, automatic mode for func -
tions other than that operated is maintained.
■Adjusting the temperature for driver and passenger seats sep-
arately
To turn on the dual control mode, perform any of the following pro-
cedures:
● Press .
● Adjust the passenger’s side temperature setting.
The indicator comes on when the dual control mode is on.
Using automatic mode
1
2
3
4

5525-1. Using the air conditioning system and defogger
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■ Operation of the air conditioning system in Eco drive mode
● In Eco drive mode, the air conditioning system is controlled as follows to pri-
oritize fuel efficiency:
• Engine speed and compressor operation controlled to restrict h eating/
cooling capacity
• Fan speed restricted when automatic mode is selected
● To improve air conditioning performance, perform the following operations:
• Adjust the fan speed
• Adjust the temperature setting
• Turn off Eco drive mode
● Even when the drive mode is set to Eco drive mode, the air conditioning eco
mode can be turned off by pressing the .
■ When the outside temperature falls to nearly 0C (32F)
The dehumidification function may not operate even when is pre ssed.
■ Ventilation and air conditioning odors
● To let fresh air in, set the air conditioning system to the outside air mode.
● During use, various odors from inside and outside the vehicle may enter into
and accumulate in the air condi tioning system. This may then cause odor to
be emitted from the vents.
● To reduce potential odors from occurring:
• It is recommended that the air conditioning system be set to o utside air
mode prior to turning the vehicle off.
• The start timing of the blower may be delayed for a short peri od of time
immediately after the air conditioning system is started in aut omatic
mode.

5926-3. Do-it-yourself maintenance
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Tire inflation
pressure
( P. 630)
• Tire pressure gauge
• Compressed air source
Washer fluid
( P. 609)
• Water or washer fluid containing antifreeze (for win-
ter use)
• Funnel (used only for adding water or washer fluid)
WARNING
The engine compartment contains many mechanisms and fluids that may
move suddenly, become hot, or become electrically energized. To avoid death
or serious injury, observe the following precautions.
■ When working on the engine compartment
● Make sure that the “ACCESSORY” or “IGNITION ON” on the multi-infor-
mation display and the “READY” indicator are both off.
● Keep hands, clothing and tools away from the moving fan.
● Be careful not to touch the engine, power control unit, radiator, exhaust
manifold, etc., right after driving as they may be hot. Oil and other fluids
may also be hot.
● Do not leave anything that may burn easily, such as paper and rags, in the
engine compartment.
● Do not smoke, cause sparks or expose an open flame to fuel or the 12-volt
battery. Fuel and 12-volt battery fumes are flammable.
● Be extremely cautious when working on the 12-volt battery. It contains poi-
sonous and corrosive sulfuric acid.
● Take care because brake fluid can harm your hands or eyes and damage
painted surfaces. If fluid gets on your hands or in your eyes, flush the
affected area with clean water immediately. If you still experi ence discom-
fort, consult a doctor.
■ When working near the electric cooling fans or radiator grille
Be sure the power switch is off.
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. ( P. 604)
■ Safety glasses
Wear safety glasses to prevent flying or falling material, flui d spray, etc.,
from getting in your eyes.
ItemsParts and tools

5976-3. Do-it-yourself maintenance
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6
Maintenance and care
Engine compar tment
2ZR-FXE engine
Washer fluid tank (P. 609)
Engine coolant reservoir
( P. 602)
Fuse boxes ( P. 646)
Engine oil level dipstick
( P. 599)
Engine oil filler cap ( P. 600)
Power control unit coolant
reservoir ( P. 6 0 2 )
12-volt battery ( P. 6 0 4 )
Radiator ( P. 6 0 4 )
Condenser ( P. 6 0 4 )
Electric cooling fans

5986-3. Do-it-yourself maintenance
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M20A-FXS engine
■12-volt battery (M20A-FXS engine)
 P. 610
Washer fluid tank (P. 609)
Engine coolant reservoir
( P. 602)
Fuse boxes ( P. 646)
Power control unit coolant res-
ervoir ( P. 602)
Engine oil filler cap ( P. 6 0 0 )
Engine oil level dipstick
( P. 5 9 9 )
Radiator ( P. 6 0 4 )
Condenser ( P. 6 0 4 )
Electric cooling fans