coolant temperature Lexus CT200h 2011 Owner's Manual (in English)

221
2-2. Instrument cluster
2
When driving
CT200h_EE (OM76041E)
Customization
Settings (e.g. on/off operation of the ECO lamp) can be changed.
(Customizable features P. 655)
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. 6 2 7 )

304
2-5. Driving information
CT200h_EE (OM76041E)
Winter driving tips
Carry out the necessary preparations and inspections before driving
the vehicle in winter. Always drive the vehicle in a manner appropriate
to the prevailing weather conditions.
Pre-winter preparations
Use fluids that are appropriate to the prevailing outside
temperatures.
• Engine oil
• Engine/power control unit coolant
• Washer fluid
Have the vehicle fitted with four snow tires or purchase a
set of tire chains for the front tires.
Ensure that all tires are the same size and brand, and that chains
match the size of the tires.
Before driving the vehicle
Perform the following according to the driving conditions:
Do not try to forcibly open a window or move a wiper that
is frozen. Pour warm water over the frozen area to melt the
ice. Wipe away the water immediately to prevent it from
freezing.
To ensure proper operation of the climate control system
fan, remove any snow that has accumulated on the air inlet
vents in front of the windshield.
Remove any ice that has accumulated on the vehicle chas-
sis.

476
4-2. Maintenance
CT200h_EE (OM76041E)
Does your vehicle need repairs?
Be on the alert for changes in performance and sounds, and visual tip-offs
that indicate service is needed. Some important clues are:
Engine missing, stumbling or pinging
Appreciable loss of power
Strange engine noises
A fluid leak under the vehicle (However, water dripping from the air
conditioning system after use is normal.)
Change in exhaust sound (This may indicate a dangerous carbon monox-
ide leak. Drive with the windows open and have the exhaust system
checked immediately.)
Flat-looking tires, excessive tire squeal when cornering, uneven tire
wear
Vehicle pulls to one side when driven straight on a level road
Strange noises related to suspension movement
Loss of brake effectiveness, spongy feeling brake pedal, pedal almost
touches the floor, vehicle pulls to one side when braking
Engine coolant temperature continually higher than normal
If you notice any of these clues, take your vehicle to any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional as
soon as possible. Your vehicle may need adjustment or repair.
CAUTION
If your vehicle is not properly maintained
Improper maintenance could result in serious damage to the vehicle and
possible serious injury or death.
Handling of the 12-volt battery
12-volt battery posts, terminals and related accessories contain lead and lead
compounds which are known to cause brain damage. Wash your hands after
handling. (P. 496)

492
4-3. Do-it-yourself maintenance
CT200h_EE (OM76041E)
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.

5
557
5-1. Essential information
When trouble arises
CT200h_EE (OM76041E)
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably
needs adjustment or repair. Contact any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional as soon
as possible.
Visible symptoms
Fluid leaks under the vehicle.
(Water dripping from the air conditioning after use is nor-
mal.)
Flat-looking tires or uneven tire wear
High coolant temperature warning light flashes or comes
on.
Audible symptoms
Changes in exhaust sound
Excessive tire squeal when cornering
Strange noises related to the suspension system
Pinging or other noises related to the hybrid system
Operational symptoms
Engine missing, stumbling or running roughly
Appreciable loss of power
Vehicle pulls heavily to one side when braking
Vehicle p lls hea il to one side hen dri ing on a le el

5
559
5-2. Steps to take in an emergency
When trouble arises
CT200h_EE (OM76041E)
Stop the vehicle immediately.
The following warning indicates the possibility of damage to the
vehicle that may lead to an accident. Immediately stop the vehicle
in a safe place and contact any authorized Lexus dealer or repairer,
or another duly qualified and equipped professional.
Warning lightWarning light/Details
Charging system warning light
Indicates a malfunction in the vehicle’s charging sys-
tem
Low engine oil pressure warning light
Indicates that the engine oil pressure is too low
High coolant temperature warning light
Changes from a flashing to a solid light when the
engine coolant temperature increases

5
627
5-2. Steps to take in an emergency
When trouble arises
CT200h_EE (OM76041E)
If your vehicle overheats
Correction procedures
If the high coolant temperature warning light comes on or
flashes
Stop the vehicle in a safe place and turn off the air condi-
tioning system.
Check to see if steam is coming out from the engine area.
If you see steam:
Stop the hybrid system. Carefully lift the hood after the
steam subsides and then restart the hybrid system.
If you do not see steam:
Leave the hybrid system operating and carefully lift the
hood.
Check to see if the cooling fans are operating.
If the fans are operating:
Wait until the high coolant temperature warning light goes
off and then stop the hybrid system.
If the fans are not operating:
Stop the hybrid system immediately and call any authorized
Lexus dealer or repairer, or another duly qualified and
equipped professional.
The following may indicate that your vehicle is overheating:
The high coolant temperature warning light comes on or
flashes:
The engine may be overheating.
“HYBRID SYSTEM OVERHEAT” is shown on the multi-
information display:
STEP1
STEP2
STEP3

690
Alphabetical index
CT200h_EE (OM76041E)
Vanity lights
Vanity lights .........................449
Wattage .................................652
Vanity mirrors ...........................449
Vehicle identification number ...639
Vehicle stability control ............285
VSC ...........................................285
VSC+ .........................................286
Warning buzzers
Brake system ........................558
Open door ............................562
Seat belt reminder .................562
Warning lights
Anti-lock brake system
(ABS) .................................560
Automatic headlight leveling
system.................................561
Brake system ................558, 561
Charging system ...................559
Electric power steering
system.................................560
High coolant temperature .....559
Low engine oil pressure........559
Low fuel level .......................562
Malfunction indicator lamp ..560
Master warning light ............562
Open door .............................562
Pre-crash safety system ........561
Seat belt reminder light ........562
Slip indicator ........................561
SRS airbags ..........................560Warning messages
Back door............................. 570
Cruise control ...................... 568
Dynamic radar cruise
control ....................... 568, 572
EV drive mode ..................... 574
Headlight ............................. 567
Hood .................................... 570
Hybrid system ...................... 573
Hybrid system overheat ....... 573
Key....................................... 577
Lexus parking
assist-sensor............... 568, 571
Light reminder ..................... 571
Moon roof ............................ 570
Open door ............................ 569
Parking brake ....................... 571
Pre-crash
safety system ..... 568, 572, 576
Rear passenger seat belt
reminder ............................ 570
Smart entry & start system .. 577
Washer fluid ........................ 576
Washer
Checking .............................. 495
Preparing and checking
before winter ..................... 304
Switch .................................. 239
Washing and waxing ................ 466
Weight
Weight ................................. 638
Wheels ...................................... 509
Window glasses ........................ 119
Window lock switch ................. 120V
W

692
CT200h_EE (OM76041E)
What to do if...
What to do if...
A tire puncturesP. 586,
600If you have a flat tire
The hybrid system does not
P. 614If the hybrid system will not start
P. 131Immobilizer system
P. 620If the vehicle 12-volt battery is dis-
charged
The high coolant temperature
warning light flashes or come
Steam can be seen coming
from under the hood
P. 627If your vehicle overheats
The key is lostP. 616If you lose your keys
The 12-volt battery runs P. 620If the vehicle 12-volt battery is dis-
charged
The doors cannot be lockedP. 8 5Side doors
P. 8 9Back door
The horn begins to soundP. 138Alarm
The vehicle is stuck in mud
or sandP. 632If the vehicle becomes stuck
A warning light or indicator
light comes onP. 558If a warning light turns on or a warn-
ing buzzer sounds...

693
What to do if...
CT200h_EE (OM76041E)
Warning lights
P. 5 5 8P. 561
P. 5 5 9P. 561
P. 5 5 9P. 561
P. 5 5 9P. 561
P. 5 6 0P. 562
P. 5 6 0P. 562
P. 5 6 0P. 562
P. 5 6 0P. 562
*: The indicator flashes to indicate a malfunction.
Brake system warning
light (red indicator)Pre-crash safety system
warning light
*
Charging system warn-
ing lightSlip indicator light
Low engine oil pressure
warning lightBrake system warning
light
High coolant temperature
warning light
Malfunction indicator
lampOpen door warning light
SRS warning lightLow fuel level warning
light
“ABS” warning lightSeat belt reminder light
Master warning light
Automatic headlight
leveling system
warning light
Electric power steering
system warning
light