overheating Lexus CT200h 2015 Owner's Manual (in English)

CT200h_OM_OM76174U_(U)
872. Instrument cluster
2
Instrument cluster
■Engine speed
On hybrid vehicles, engine speed is precisely controlled in order to help improve fuel
efficiency and reduce exhaust emissions etc.
There are times when the engine speed that is displayed may differ even when vehicle
operation and driving conditions are the same.
■Outside temperature display
●In the following situations, the correct outside temperature may not be displayed, or the
display may take longer than normal to change.
• When stopped, or driving at low speeds (less than 12 mph [20 km/h])
• When the outside temperature has changed suddenly (at the entrance/exit of agarage, tunnel, etc.)
●When “--” or “E” is displayed, the system may be malfunctioning.
Take your vehicle to your Lexus dealer.
■Customization
Settings (e.g. on/off operation of the ECO lamp) can be changed.
(Customizable features: →P. 5 9 1 )
NOTICE
■To prevent damage to the engine and its components
●Do not let the indicator needle of the tachometer enter the red zone, which indicates
the maximum engine speed.
●The engine may be overheating if the high coolant temperature warning light comes
on or flashes. In this case, immediately stop the vehicle in a safe place, and check the
engine after it has cooled completely. ( →P. 565)

148
CT200h_OM_OM76174U_(U)4-1. Before driving
WA R N I N G
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When the vehicle is parked
●Do not leave glasses, cigarette lighters, spray cans, or soft drink cans in the vehicle
when it is in the sun.
Doing so may result in the following:
• Gas may leak from a cigarette lighter or spray can, and may lead to a fire.
• The temperature inside the vehicle may cause the plastic lenses and plastic mate- rial of glasses to deform or crack.
• Soft drink cans may fracture, causing the contents to spray over the interior of the vehicle, and may also cause a short circuit in the vehicle’s electrical components.
●Do not leave cigarette lighters in the vehicle. If a cigarette lighter is in a place such as
the glove box or on the floor, it may be lit accidentally when luggage is loaded or the
seat is adjusted, causing a fire.
●Do not attach adhesive discs to the windshield or windows. Do not place containers
such as air fresheners on the instrument panel or dashboard. Adhesive discs or con-
tainers may act as lenses, causing a fire in the vehicle.
●Do not leave a door or window open if the curved glass is coated with a metallized
film such as a silver-colored one. Reflected sunlight may cause the glass to act as a
lens, causing a fire.
●Always apply the parking brake, shift the shift position to P, stop the hybrid system and
lock the vehicle.
Do not leave the vehicle unattended while the “READY” indicator is illuminated.
●Do not touch the exhaust pipe while the “READY” indicator is illuminated or immedi-
ately after turning the hybrid system off.
Doing so may cause burns.
■When taking a nap in the vehicle
Always turn the hybrid system off. Otherwise, if you accidentally move the shift lever or
depress the accelerator pedal, this could cause an accident or fire due to hybrid system
overheating. Additionally, if the vehicle is parked in a poorly ventilated area, exhaust
gases may collect and enter the vehicle, leading to death or a serious health hazard.
■When braking
●When the brakes are wet, drive more cautiously.
Braking distance increases when the brakes are wet, and this may cause one side of
the vehicle to brake differently than the other side. Also, the parking brake may not
securely hold the vehicle.
●If the electronically controlled assist function does not operate, do not follow other
vehicles closely and avoid downhill or sharp turns that require braking.
In this case, braking is still possible, but the brake pedal should be depressed more
firmly than usual. Also, the braking distance will increase. Have your brakes fixed
immediately.
●The brake system consists of 2 or more individual hydraulic systems; if one of the sys-
tems fails, the other(s) will still operate. In this case, the brake pedal should be
depressed more firmly than usual and the braking distance will increase. Have your
brakes fixed immediately.

234
CT200h_OM_OM76174U_(U)4-5. Using the driving support systems
■Reduced effectiveness of the EPS system
The effectiveness of the EPS system is reduced to prevent the system from overheating
when there is frequent steering input over an extended period of time. The steering
wheel may feel heavy as a result. Should this occur, refrain from excessive steering input
or stop the vehicle and turn the hybrid system off. The EPS system should return to nor-
mal within 10 minutes.
■Automatic reactivation of TRAC system
After turning the TRAC system off, the system will be automatically re-enabled in the fol-
lowing situations:
●When the power switch is turned off
●The TRAC will turn on when vehicle speed increases

423
CT200h_OM_OM76174U_(U)6-1. Using the air conditio
ning system and defogger
6
Interior features
Heated steering wheel∗/seat heaters∗
∗
: If equipped
Heated steering wheel and seat heaters heat the side grips of the steering
wheel and seats, respectively.
WA R N I N G
●Care should be taken to prevent injury if anyone in the following categories comes in
contact with the steering wheel and seats when the heater is on:
• Babies, small children, the elderly, the sick and the physically challenged
• Persons with sensitive skin
• Persons who are fatigued
• Persons who have taken alcohol or drugs that induce sleep (sleeping drugs, cold remedies, etc.)
●Observe the following precautions to prevent minor burns or overheating:
• Do not cover the seat with a blanket or cushion when using the seat heater.
• Do not use seat heater more than necessary.
NOTICE
●Do not put heavy objects that have an uneven surface on the seat and do not stick
sharp objects (needles, nails, etc.) into the seat.
●To prevent 12-volt battery discharge, do not use the functions when the hybrid system
is off.

5418-2. Steps to take in an emergency
CT200h_OM_OM76174U_(U)
8
When trouble arises
*1: Refer to the separate “Scheduled Maintenance” or “Owner’s Manual Supplement” for the maintenance interval applicable to your vehicle.
*2: For the EV drive mode operating conditions (→P. 1 6 0 ) .
(U.S.A. only)
Indicates that all maintenance according to the driven
distance on the maintenance schedule
*1 should be per-
formed soon. Comes on approximately 4500 miles (7200 km)
after the message has been reset.
→ If necessary, perform maintenance.
(U.S.A. only)
Indicates that all maintenance is required to correspond
to the driven distance on the maintenance schedule
*1.
Comes on approximately 5000 miles (8000 km)
after the message has been reset.
(The indicator will not work properly unless the mes-
sage has been reset.)
→ Perform the necessary maintenance. Please reset
the message after the maintenance is performed
(→ P. 4 6 6 )
(If equipped)
Indicates that the pre-collision system is not currently
functional because the grille cover or the sensor is dirty
This message also appears when the pre-collision sys-
tem is not functional due to overheating.
→ Check the grille cover and the sensor and clean
them if they are dirty.
In case of overheating, the system will become func-
tional once the system cools down.
Indicates that the EV drive mode is not available*2
The reason the EV drive mode is not available (the
vehicle is idling, battery charge is low, speed is higher
than the EV drive mode operating speed range, accel-
erator pedal is depressed too much) may be dis-
played.
A buzzer also sounds.
→ Use the EV drive mode when it becomes available.
Indicates that the EV drive mode has been automatically
canceled*2
The reason the EV drive mode is not available (the
battery charge is low, speed is higher than the EV
drive mode operating speed range, accelerator pedal
is depressed too much) may be displayed.
A buzzer also sounds.
→ Drive the vehicle for a while.
Wa r n i n g m e s s a g eDetails/Actions
(Flashes
3 times)

565
CT200h_OM_OM76174U_(U)
8
When trouble arises
8-2. Steps to take in an emergency
If your vehicle overheats
■If the high coolant temperature warning light comes on or flashes
Stop the vehicle in a safe place and turn off the air conditioning system, and
then stop the hybrid system.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the hybrid system has cooled down sufficiently, inspect the hoses and
radiator core (radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant leaks,
immediately contact your Lexus
dealer.
The following may indicate that your vehicle is overheating.
●The high coolant temper ature warning light (→P. 528) comes on or flashes,
or a loss of hybrid system power is experienced. (For example, the vehicle
speed does not increase.)
●The warning message indicating overheats is shown on the multi-informa-
tion display. ( →P. 5 4 0 )
●Steam comes out from under the hood.
Correction procedures
1
2
3
1
2

619Alphabetical index
CT200h_OM_OM76174U_(U)
Child safety ..................................................5112-volt battery
precautions...........................486, 564
Airbag precautions .............................. 39
Back door precautions ...................... 112
Child restraint system ......................... 52
How your child should wear the seat belt .............................. 33
Installing child restraints.....................55
Moon roof precautions...................... 141
Power window lock switch ............ 136
Power window precautions .......... 138
Rear door child-protectors ...........108
Removed key battery precautions....................................... 503
Seat belt extender
precautions...........................................35
Seat belt precautions ..........................35
Seat heater precautions.................. 423
Child-protectors.................................... 108
Cleaning....................................... 460, 463 Aluminum wheels ............................... 461
Exterior................................................... 460
Interior .....................................................463
Seat belts ................................................463
Clock ......................................................... 438
Compass .................................................. 447
Condenser .............................................. 482
Console box ........................................... 428
Coolant
Capacity .................................................575
Checking............................................... 480
Preparing and checking before winter ....................................245 Cooling system ..................................... 480
Hybrid system overheating ..........565
Consumption screen ............................... 91
Cruise control Cruise control ...................................... 186
Dynamic radar cruise control................................................... 189
Cup holders............................................ 428
Curtain shield airbags ............................ 37
Customizable features ........................591
Daytime running light system............ 170
Defogger
Outside rear view mirrors ........................................ 412, 418
Rear window ............................... 412, 418
Windshield................................... 412, 418
Dimension ................................................572
Dinghy towing ......................................... 155
Display Drive information ..................................88
Dynamic radar cruise control................................................... 189
Energy monitor........................................ 91
Multi-information display..................88
Warning messages .......................... 534
Do-it-yourself maintenance............... 471
D

621Alphabetical index
CT200h_OM_OM76174U_(U)
If you have a flat tire ..........................547
If you lose your keys ................102, 104
If you think something is wrong ...................................................526
If your vehicle becomes stuck ..................................................... 569
If your vehicle has to be stopped in an
emergency.......................................... 521
If your vehicle needs to be
towed.................................................... 522
If your vehicle overheats ............... 565
Energy monitor ..........................................91
Engine Accessory mode................................. 157
Compartment ...................................... 476
Engine switch ........................................ 156
Hood ........................................................ 473
How to start the hybrid system ................................................... 156
Identification number .......................573
If your vehicle has to be stopped in an emergency ........... 521
Ignition switch
(power switch).................................. 156
Overheating ........................................ 565
Power switch......................................... 156 Engine compartment cover.............. 477
Engine coolant
Capacity ................................................. 575
Checking .............................................. 480
Preparing and checking before winter .................................... 245
Engine oil Capacity ................................................. 574
Checking ................................................477
Oil pressure warning light ............ 527
Engine oil maintenance data ............466
Engine switch........................................... 156 Auto power off function .................. 158
Changing the power switch modes .................................................... 157
If your vehicle has to be stopped
in an emergency............................... 521
Starting the hybrid system...............156
EPS (Electronic Power Steering) Function .................................................. 232
Warning light .......................................528
EV indicator ...............................................66
EV drive mode ........................................160
Event data recorder (EDR)................... 12
First-aid kit storage belt......................432
Flat tire .......................................................547
Floor mats................................................... 28
Fluid
Brake........................................................ 577
Transmission ........................................ 576
Washer ...................................................483
Fog lights
Replacing light bulbs .............. 512, 517
Switch ........................................................ 172
Wattage ................................................. 579
F

623Alphabetical index
CT200h_OM_OM76174U_(U)
Hood .......................................................... 473Warning message ............................ 535
Hooks Cargo hooks ........................................ 432
Retaining hooks (floor mat) .............28
Horn .............................................................129
Hybrid battery (traction battery) Location .....................................................68
Specification .........................................574
Hybrid battery air vent .......................... 69
Hybrid system ........................................... 64 Emergency shut off system ..............69
Energy monitor/consumption screen ..........................91
EV drive mode..................................... 160
High voltage components ...............68
Hybrid System Indicator ...................86
Hybrid system precautions ..............68
Hybrid vehicle driving tips............. 243
If the hybrid system will not start ........................................................557
Overheating ........................................ 565
Power switch......................................... 156
Regenerative braking .........................66
Starting the hybrid system .............. 156
Vehicle proximity notification
system .....................................................65
Hybrid System Indicator....................... 86
Hybrid transmission ..............................162 I/M test ......................................................470
Identification
Engine ..................................................... 573
Vehicle .................................................... 572
Ignition switch (Power switch).......... 156
Auto power off function .................. 158
Changing the power switch modes .................................................... 157
If your vehicle has to be stopped
in an emergency............................... 521
Starting the hybrid system...............156
Illuminated entry system ....................426
Immobilizer system ................................. 73
Indicators .................................................... 80
Initialization Engine oil maintenance data ....... 466
Items to initialize .................................599
Tire pressure warning system ..................................................489
Inside rear view mirror.......................... 131
Instrument panel light control ............ 85
Interior lights ...........................................425 Switch ...................................................... 426
Wattage ................................................. 579
Intuitive parking assist
Function ....................................................199
Warning message............................. 536I

625Alphabetical index
CT200h_OM_OM76174U_(U)
MaintenanceDo-it-yourself maintenance........................................471
General maintenance .....................467
Maintenance data .............................. 572
Maintenance requirements.......... 465
Malfunction indicator lamp .............. 527
Meter Indicators.................................................. 80
Instrument panel light control .................................................... 85
Meters.........................................................84
Multi-information display ................. 88
Warning lights ..................................... 527
Warning messages ...........................534
Micro dust and pollen filter .................................................412, 418
Microphone .................................286, 372
Mirrors Inside rear view mirror ....................... 131
Outside rear view mirror defoggers .................................. 412, 418
Outside rear view mirrors .............. 134
Vanity mirrors ...................................... 437
Moon roof
Jam protection function ................... 140
Operation ............................................... 139
Warning message ............................ 540
MP3 disc ....................................... 265, 347 Multi-information display
Drive information ..................................88
Dynamic radar cruise control................................................... 189
Energy monitor........................................ 91
Language...............................................596
Warning messages .......................... 534
Navigation system
*
Noise from under vehicle ...................... 10
Odometer .................................................. 85
Oil Engine oil ............................................... 574
Opener
Back door................................................... 111
Fuel filler door....................................... 183
Hood........................................................ 473
Outside rear view mirrors.................. 134
Adjusting and folding ........................ 134
Outside rear view mirror defoggers............................................. 412
Outside temperature display ............. 84
Overhead console .............................. 433
Overheating........................................... 565
M
N
O
*: Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.