cooling Lexus CT200h 2012 Owner's Manual (in English)

42
1-1. Hybrid system
CT200h_OM_OM76067E_(EE)
Sounds and vibrations specific to a hybrid vehicle
There may be no engine sounds or vibration even though the vehicle is able
to move. 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
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) behind
the rear seats when the hybrid system starts or stops.
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 and accelerator is loosened.
Other sounds, such as motors and mechanical noises, may be heard from
the brake system when the brake pedal is depressed.
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 dis-
posal. Do not dispose of the vehicle yourself.
Customization
Settings (e.g. on/off operation of the EV indicator) can be changed.
(Customizable features P. 667)

44
1-1. Hybrid system
CT200h_OM_OM76067E_(EE)
Hybrid battery air vent
There is an air intake vent on
the side of the rear right seat-
back for the purpose of cooling
the hybrid battery (traction bat-
tery). If the vent become
blocked, the hybrid battery may
overheat, leading to a reduction
in hybrid battery output.
Emergency shut off system
When a certain level of impact is detected by the impact sensor, the
emergency shut off system blocks off the high voltage current and
stops the fuel pump to minimize the risk of electrocution and fuel
leakage. If the emergency shut off system activates, your vehicle
will not restart. To restart the hybrid system, contact any autho-
rized Lexus dealer or repairer, or another duly qualified and
equipped professional.

54
1-1. Hybrid system
CT200h_OM_OM76067E_(EE)
Hybrid vehicle driving tips
For economical and ecological driving, pay attention to the following
points:
Using Eco drive mode
When using Eco drive mode, the torque corresponding to the accel-
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. 209)
Use of Hybrid System Indicator
The Eco-friendly driving is possible by keeping the indicate of
Hybrid System Indicator within Eco area. (P. 222)
When braking the vehicle
Make sure to operate the brakes gently and in good time. A greater
amount of electrical energy can be retained when slowing down.
Delays
Repeated acceleration and deceleration, as well as long waits at
traffic lights, will lead to bad fuel consumption. Check traffic
reports before leaving and avoid delays as much as possible. When
encountering a delay, gently release the brake pedal to allow the
vehicle to move forward slightly while avoiding overuse of the
accelerator pedal. Doing so can help control excessive gasoline
consumption.
Highway driving
Control your speed and keep at a constant speed. Also, before stop-
ping at a toll booth or similar, allow plenty of time to release the
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211
2-1. Driving procedures
2
When driving
CT200h_OM_OM76067E_(EE)
Operation of the air conditioning system in Eco drive mode (without navi-
gation system)
Eco drive mode controls the heating/ cooling operations and fan speed of
the air conditioning system to enhance fuel efficiency. (P. 326) To
improve air conditioning performance, adjust the fan speed or turn off Eco
drive mode.
Operation of the air conditioning system in Eco drive mode (with navigation
system)
Eco drive mode controls the heating/cooling operations and fan speed of the
air conditioning system to enhance fuel efficiency. To improve air condi-
tioning performance, adjust the fan speed or turn off Eco drive mode. (Refer
to the “Navigation System Owner’s Manual”.)
For the shift positions
When the “POWER” switch is off, the shift position cannot be changed.
When the “POWER” switch is in ON mode (the hybrid system is not
operating), the shift position can only be changed to N. The shift position
will be changed to N even if the shift lever is shifted to D or R and held
in that position.
When the “READY” indicator is on, the shift position can be changed
from P to D, N or R.
When the “READY” indicator is flashing, the shift position cannot be
changed from P to another position even if the shift lever is operated.
Wait until the “READY” indicator changes from a flashing to a solid
light, and then operate the shift lever again.
The shift position can only be changed to B directly from D.

318
CT200h_OM_OM76067E_(EE)
3-1. Using the air conditioning system and defogger
Automatic air conditioning system
Air outlets and fan speed are automatically adjusted according to the
temperature setting.
Vehicles with a navigation system
Refer to the “Navigation System Owner’s Manual”.
Vehicles without a navigation system
The illustration below is for left-hand drive vehicles.
The button positions and shapes may differ slightly for right-
hand drive vehicles.
Automatic mode but-
“OFF” but-
Fan speed control but-
Air outlet selector buttonOutside/recirculated air mode but-Cooling and dehumidifica-
tion Dual mode but- Driver’s side temperature control buttons
Fan speed dis- Driver’s side tempera-
ture
Windshield
defogger but-Passenger’s side temperature control but-
Air outlet dis-Passenger’s side tempera-
ture
Pollen removal
mode button

319
3-1. Using the air conditioning system and defogger
3
Interior features
CT200h_OM_OM76067E_(EE)
Using automatic air conditioning system
Press .
The air conditioning system begins to operate. Air outlets
and fan speed are automatically adjusted according to the
temperature setting.
Press to increase the temperature and to
decrease the temperature.
When is pressed (the indicator on is on) or the pas-
senger’s side temperature control button is pressed, the tempera-
ture for the driver and passenger seats can be adjusted separately.
Press .
The cooling and dehumidification function switches between on
and
off each time the button is pressed.
STEP1
STEP2
STEP3

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3-1. Using the air conditioning system and defogger
3
Interior features
CT200h_OM_OM76067E_(EE)
Window defogger feature
Recirculated air mode may automatically switch to (outside air)
mode in situations where the windows need to be defogged.
Pollen removal mode
In order to prevent the windshield from fogging up when the outside air
is cold, the following may occur:
• Outside air mode does not switch to (recirculated air) mode.
• The air conditioning system operates automatically.
• The operation cancels after 1 minute.
In rainy weather, the windows may fog up. Press .
When outside air temperature is below 0 C (32 F)
The cooling and dehumidification function may not operate even when
is pressed.
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. 667)

490
4-3. Do-it-yourself maintenance
CT200h_OM_OM76067E_(EE)
CAUTION
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 indicator on the “POWER” switch and the “READY”
indicator are both off.
Keep hands, clothing and tools away from the moving fan and engine
drive belt.
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. Fuel fumes
are flammable.
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 experience discomfort, 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 auto-
matically start to run if the air conditioning is on and/or the coolant tempera-
ture is high. (P. 506)
Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc.
from getting in your eyes.

496
4-3. Do-it-yourself maintenance
CT200h_OM_OM76067E_(EE)
Engine compartment
12-volt battery
P. 5 0 8
Engine coolant reservoir
(P. 503)
Engine oil level dipstick
(P. 498)
Engine oil filler cap (P.
498)
Power control unit coolantFuse box (P. 532)
Radiator (P. 506)
Condenser (P. 506)
Electric cooling fans
Washer fluid tank (P.
507)

504
4-3. Do-it-yourself maintenance
CT200h_OM_OM76067E_(EE)
Coolant selection
Only use “Toyota Super Long Life Coolant” or a similar high quality eth-
ylene glycol based non-silicate, non-amine, non-nitrite, and non-borate
coolant with long-life hybrid organic acid technology.
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50%
deionized water. (Minimum temperature: -35C [-31F])
For more details about coolant, contact any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine/power control unit coolant reser-
voir caps, drain cock and water pump.
If you cannot find a leak, have any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional test the cap and check for
leaks in the cooling system.
CAUTION
When the hybrid system is hot
Do not remove the engine/power control unit coolant reservoir caps.
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing serious injuries, such as burns.