2013 Lexus CT200h cooling

801-2. Hybrid system
CT200h_OM_OM76102E_(EE)
Sounds and vibrations specific to a hybrid vehicle
There may be no engine sound or vibration even though the vehicle is able to
move with the “READY” indicator is illuminated. For safety, apply the parking
brake and make sure to shift the shift position to P when parked.
The following sounds or vibrations may occur when the hybrid system is operat-
ing and are not a malfunction:
Motor sounds may be heard from the engine compartment.
Sounds may be heard from the hybrid battery (traction battery) behind the rear
seats 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 system
is started or stopped.
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.
Operating sounds or motor sounds that occur when the brake pedal is operated.
Vibration may be felt when the gasoline engine starts or stops.
Cooling fan sounds may be heard from the air intake vent on the side of rear
right seatback.
Maintenance, repair, recycling, and disposal
Contact any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional regarding maintenance, repair, recycling and disposal. Do
not dispose of the vehicle yourself.
Customization Settings
Settings (e.g. on/off operation of the EV indicator) can be changed.
(Customizable features: P. 650)

821-2. Hybrid system
CT200h_OM_OM76102E_(EE)
There is an air intake vent on the
side of the rear right seatback for
the purpose of cooling the hybrid
battery (traction battery). If the vent
becomes blocked, the hybrid battery
may overheat, leading to a reduc-
tion in hybrid battery output.
When a certain level of impact is detected by the impact sensor, the emer-
gency shut off system blocks the high voltage current and stops the fuel
pump to minimize the risk of electrocution and fuel leakage. If the emer-
gency shut off system activates, your vehicle will not restart. To restart
the hybrid system, contact any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
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 instruc-
tions.
(P. 575)
Hybrid battery air vent
Emergency shut off system
Hybrid warning message

2674-5. Using the driving support systems
4
Driving
CT200h_OM_OM76102E_(EE)
Driving mode select switch
Normal mode
Eco drive mode
Suitable for improving the fuel econ-
omy, because the torque correspond-
ing to the accelerator pedal
depression amount can be generated
more smoothly than it is in normal
conditions and the operation of the
air conditioning system (heating/
cooling) will be minimized.
When the driving mode select switch is turned left, the “ECO MODE” indica-
tor comes on in the instrument cluster.
Press the switch to change the driving mode to normal mode.
Sport mode
Use when high levels of response and feeling are desirable, such as when driv-
ing in mountainous regions or when overtaking.
When the driving mode select switch is turned right, the “SPORT MODE”
indicator comes on in the instrument cluster.
Press the switch to change the driving mode to normal mode.
Operation of the air conditioning system in Eco drive mode
Eco drive mode controls the heating/cooling operations and fan speed of the air
conditioning system to enhance fuel efficiency (P. 450, 457). To improve air
conditioning performance, adjust the fan speed or turn off Eco drive mode.
Sport mode automatic deactivation
Sport mode is automatically deactivated if the power switch is turned off after
driving in sport mode.
The driving modes can be selected to suit driving conditions.
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4 4-6. Driving tips
Driving
CT200h_OM_OM76102E_(EE)
Hybrid vehicle driving tips
Using Eco drive mode
When using Eco drive mode, the torque corresponding to the accelera-
tor 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, improving the fuel econ-
omy. (P. 267)
Use of Hybrid System Indicator
The Eco-friendly driving is possible by keeping the indicator needle of
Hybrid System Indicator within Eco area. (P. 107)
Shift lever operation
Shift the shift position to D when stopped at a traffic light, or driving in
heavy traffic etc. Shift the shift position to P when parking. When
using the N position, there is no positive effect on fuel consumption. In
the N position, the gasoline engine operates but electricity cannot be
generated. Also, when using the air conditioning system, etc., the
hybrid battery (traction battery) power is consumed.
Accelerator pedal/brake pedal operation
Drive your vehicle smoothly. Avoid abrupt acceleration and deceler-
ation. Gradual acceleration and deceleration will make more effec-
tive use of the electric motor (traction motor) without 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 acceler-
ator pedal slightly released.
When braking
Make sure to operate the brakes gently and in a timely manner. A
greater amount of electrical energy can be retained when slowing
down.
For economical and ecological driving, pay attention to the following
points:

4456-1. Using the air conditioning system and defogger
CT200h_OM_OM76102E_(EE)
6
Interior features
Vehicles with a navigation system
Adjust the left-hand side
temperature setting
Adjust the fan speed setting
Select the air flow mode
Adjust the right-hand side
temperature setting
Display the option control
screen (P. 445)
Turn the fan off
Select to set automatic mode on/off
To adjust or select settings, move the Remote Touch knob to select
the screen button, and then press the Remote Touch knob to enter the
selected function.
Option control screen
Select on the climate screen to display the option control screen.
The functions can be switched on and off.
Select to set cooling and dehumidification function on/off
Adjust the temperature for driver and passenger seats separately
(“DUAL” mode) (P. 446)
Prevent ice from building up on the windshield and wiper blades
(if equipped) (P. 448)
Remove pollen from the air (Pollen removal mode) (P. 447)
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Vehicles with a Lexus Display
Audio SystemVehicles with a navigation sys-
tem
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4496-1. Using the air conditioning system and defogger
CT200h_OM_OM76102E_(EE)
6
Interior features
Registering air conditioning settings to electronic keys (vehicles with a smart
entry & start system)
Unlocking the vehicle using an electronic key and turning the power switch to
ON mode will recall that key’s registered air conditioning settings.
When the power switch is turned off, the current air conditioning settings will
automatically be registered to the electronic key that was used to unlock the
vehicle.
The system may not operate correctly if more than one electronic key is in the
vicinity or if the smart entry & start system is used to unlock a passenger door.
Settings for the electronic key and the corresponding door can be changed.
Contact any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional.
Using automatic mode
Fan speed is adjusted automatically according to the temperature setting and the
ambient conditions.
Therefore, the fan may stop for a while until warm or cool air is ready to flow
immediately after the “AUTO” button is pressed or “AUTO” is selected.
Fogging up of the windows
The windows will easily fog up when the humidity in the vehicle is high. Press-
ing “A/C” button or selecting “A/C” will dehumidify the air from the outlets
and defog the windshield effectively.
If you turn “A/C” off, the windows may fog up more easily.
The windows may fog up if the recirculated air mode is used.
Windshield fog detection function (if equipped)
When automatic mode is set, the humidity sensor (P. 451) detects fog on the
windshield and controls the air conditioning system to prevent fog.
Outside/recirculated air mode
When driving on dusty roads such as tunnels or in heavy traffic, set
to the recirculated air mode. This is effective in preventing out-
side air from entering the vehicle interior. During cooling operation, setting the
recirculated air mode will also cool the vehicle interior effectively.
Outside/recirculated air mode may automatically switch depending on the tem-
perature setting or the inside temperature.

4506-1. Using the air conditioning system and defogger
CT200h_OM_OM76102E_(EE)
When the outside temperature is low
The dehumidification function may not operate even when “A/C” is pressed or
“A/C” is selected.
Operation of the air conditioning system in Eco drive mode
In the Eco drive mode, the air conditioning system is controlled as follows to
prioritize fuel efficiency
• Engine speed and compressor operation controlled to restrict heating/cooling
capacity
• Fan speed restricted when automatic mode is selected
To improve air conditioning performance, perform the following operations
• Adjust the fan speed
• Turn off Eco drive mode
• Customize the air conditioning control of Eco drive mode. (P. 658)
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 conditioning 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 outside air mode
prior to turning the vehicle off.
• The start timing of the blower may be delayed for a short period of time
immediately after the air conditioning system is started in automatic mode.
Air conditioning filter
P. 527
Customization
Settings (e.g. A/C automatic mode switch operation) can be changed.
(Customizable features: P. 650)

4566-1. Using the air conditioning system and defogger
CT200h_OM_OM76102E_(EE)
Registering air conditioning settings to electronic keys (vehicles with a smart
entry & start system)
Unlocking the vehicle using an electronic key and turning the power switch to
ON mode will recall that key’s registered air conditioning settings.
When the power switch is turned off, the current air conditioning settings will
automatically be registered to the electronic key that was used to unlock the
vehicle.
The system may not operate correctly if more than one electronic key is in the
vicinity or if the smart entry & start system is used to unlock a passenger door.
Settings for the electronic key and the corresponding door can be changed.
Contact any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional.
Using automatic mode
Fan speed is adjusted automatically according to the temperature setting and the
ambient conditions.
Therefore, the fan may stop for a while until warm or cool air is ready to flow
immediately after the “AUTO” button is pressed.
Fogging up of the windows
The windows will easily fog up when the humidity in the vehicle is high. Press-
ing “A/C” button on will dehumidify the air from the outlets and defog the
windshield effectively.
If you turn “A/C” off, the windows may fog up more easily.
The windows may fog up if the recirculated air mode is used.
Windshield fog detection function (if equipped)
When automatic mode is set, the humidity sensor (P. 458) detects fog on the
windshield and controls the air conditioning system to prevent fog.
Outside/recirculated air mode
When driving on dusty roads such as tunnels or in heavy traffic, set
to the recirculated air mode. This is effective in preventing out-
side air from entering the vehicle interior. During cooling operation, setting the
recirculated air mode will also cool the vehicle interior effectively.
Outside/recirculated air mode may automatically switch depending on the tem-
perature setting or the inside temperature.