2017 Lexus IS200t overheating

962. Instrument cluster
IS200t_EE(OM53D77E)
The brightness of the instrument panel lights can be adjusted.Darker
Brighter
■The meters and display illuminate when
The engine switch is in IGNITION ON mode.
■Instrument panel brightness adjustment
The instrument panel brightness levels when th e tail lights are on and off can be adjusted
individually. However, when the surroundings ar e bright (daytime, etc.), turning on the tail
lights will not change the in strument panel brightness.
■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 sp eeds (less than 20 km/h [12 mph])
●When the outside temperature has changed suddenly (at the entrance/exit of a garage,
tunnel, etc.)
■Pop-up display
●In some situations, such as when a switch operation is performed, a pop-up display will
be temporarily displayed on the multi-information display or the odometer/trip meter
screen (F SPORT models).
●Some pop-up displays can be set on/off. ( P. 107)
■Customization
The meter display can be customized on the multi-information display. (P. 107)
Instrument panel light control
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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 engine coolant temperature gauge is in the red
zone (H). In this case, immediately stop the vehicle in a safe place, and check the
engine after it has cooled completely. ( P. 622)

2024-1. Before driving
IS200t_EE(OM53D77E)
■Important points regarding stability
Vehicle movement resulting from uneven road surfaces and strong cross-
winds will affect handling. The vehicle may also be rocked by passing buses or
large trucks. Frequently check behind when moving alongside such vehicles.
As soon as such vehicle movement occurs, immediately start to decelerate
smoothly by slowly applying the brakes. Always steer the vehicle straight
ahead while braking.
■Passing other vehicles
Consider the total combined length of your vehicle and trailer and ensure that
the vehicle-to-vehicle distance is sufficient before executing lane changes.
■Transmission information
To maintain engine brakin g efficiency, when using en gine braking when driv-
ing on a long steep downwa rd grade, do not use the transmission in D. The
vehicle must be driven in gear shift position “4” in M mode. ( P. 212)
■If the engine overheats
Towing a loaded trailer up a long, steep incline in temperatures exceeding
30 C (85 F) may result in the engine overheating. If the engine coolant tem-
perature gauge indicates that the engine is overheating, turn the air condition-
ing off immediately, leave the road and stop the vehicle in a safe place.
(  P. 622)
■When parking the vehicle
Always place wheel chocks under the wheels of both the vehicle and trailer.
Firmly set the parking brake and shift the shift lever to P.

2064-2. Driving procedures
IS200t_EE(OM53D77E)
■Auto power off function
If the vehicle is left in ACCESSORY mode for more than 20 minutes or IGNITION ON
mode (the engine is not running) for more than an hour with the shift lever in P, the engine
switch will automatically turn off. However, this function cannot entirely prevent battery
discharge. Do not leave the vehicle with the engine switch in ACCESSORY or IGNI-
TION ON mode for long periods of time when the engine is not running.
■Electronic key battery depletion
 P. 125
■Conditions affecting operation
P. 143
■Notes for the entry function
P. 144
■If the engine does not start
●Check that the shift lever is securely set in P. The engine may not start if the shift lever is
displaced out of P. “To Start Vehicle, Put Shift Lever into P” will be displayed on the
multi-information display.
●The engine immobilizer system may not have been deactivated. ( P. 75)
Contact any authorized Lexus retailer or Le xus authorized repairer, or any reliable
repairer.
■Steering lock
After turning the engine switch off and opening and closing the doors, the steering wheel
will be locked due to the steering lock functi on. Operating the engine switch again auto-
matically cancels the steering lock.
■When the steering lock cannot be released
■Steering lock motor overheating prevention
To prevent the steering lock motor from over heating, operation of the motor may be sus-
pended if the engine is turned on and off repeat edly in a short period of time. In this case,
refrain from operating the engine switch. After about 10 seconds, the steering lock
motor will resume functioning. “Steering Wheel Lock Press Engine Switch
while Turning Wheel” will be displayed on the
multi-information display.
Check that the shift lever is in P. Press the
engine switch while turning the steering wheel
left and right.

3444-5. Using the driving support systems
IS200t_EE(OM53D77E)
■EPS operation sound
When the steering wheel is operated, a motor sound (whirring sound) may be heard.
This does not indicate a malfunction.
■Automatic reactivation of TRC and VSC systems
After turning the TRC and VSC systems off, the systems will be automatically re-enabled
in the following situations:
●When the engine switch is turned off
●If only the TRC system is turned off, the TR C will turn on when vehicle speed increases
If both the TRC and VSC systems are turned off, automatic re-enabling will not occur
when vehicle speed increases.
■Reduced effectiveness of the EPS system
The effectiveness of the EPS system is redu ced 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 engine off. The EPS system should return to normal
within 10 minutes.
■Operating conditions of emergency brake signal
When the following three conditions are me t, the emergency brake signal will operate:
●The emergency flashers are off
●Actual vehicle speed is over 55 km/h (35 mph)
●The brake pedal is depressed in a manner that cause the system to judge from the vehi-
cle deceleration that this is a sudden braking operation
■Automatic system cancelation of emergency brake signal
The emergency brake signal will turn off in any of the following situations:
●The emergency flashers are turned on
●The brake pedal is released
●The system judges from the vehicle deceleration that is not a sudden braking operation

4636-2. Using the air conditioning system
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Interior features
IS200t_EE(OM53D77E)
Turn the heated steering wheel on/off
The indicator light comes on when the
heated steering wheel is operating.
Heated steering wheel/seat heaters/seat ventila-
tors


: If equipped
Heated steering wheel and seat heaters heat the side grips of the steering
wheel and seats, respectively. Seat ventilators maintain good airflow by blow-
ing air from the seats.
WARNING
●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, na ils, etc.) into the seat.
●To prevent battery discharge, do not us e the functions when the engine is off.
Heated steering wheel

6228-2. Steps to take in an emergency
IS200t_EE(OM53D77E)
●The needle of the engine coolant temperature gauge (P. 93) enters the red
zone or a loss of engine power is experienced. (For example, the vehicle
speed does not increase.)
●“Engine Coolant Temp High Stop in a Safe Place See Owner’s Manual” is
shown on the multi-information display.
●Steam comes out from under the hood.
Stop the vehicle in a safe place and turn off the air conditioning system, and
then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine 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 any authorized
Lexus retailer or Lexus authorized
repairer, or any reliable repairer.
If your vehicle overheats
The following may indicate that your vehicle is overheating.
Correction procedures
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658Alphabetical index
IS200t_EE(OM53D77E)
Card key.....................................................122
Care ............................................... 486, 490Aluminum wheels .............................. 487
Exterior................................................... 486
Interior .................................................... 490
Seat belts..................................................491
Cargo hooks ........................................... 472
CD player ............................................... 380
Chains ....................................................... 347
Child restraint system ............................ 57 Baby seats, definition ..........................58
Baby seats, installation ....................... 66
Child seats, definition..........................58
Child seats, installation....................... 66
Installing CRS with ISOFIX
rigid anchors........................................ 69
Installing CRS with seat belts.......... 66
Installing CRS with top strap .......... 70
Junior seats, definition ........................58
Junior seats, installation .....................68
Child safety................................................. 56
Airbag precautions .............................. 43
Battery precautions ............... 507, 621
Child restraint system......................... 57
How your child should wear the seat belt .............................. 38
Installing child restraints .................... 65 Moon roof precautions .................... 184
Power window lock switch .............177
Power window precautions.......... 180
Rear door child-protectors ............ 132
Removed electronic key
battery precautions....................... 529
Seat belt precautions.......................... 40
Seat heater precautions ................. 463
Trunk precautions .............................. 139
Child-protectors ....................................132
Cleaning....................................... 486, 490 Aluminum wheels.............................. 487
Exterior ................................................... 486
Interior..................................................... 490
Seat belts ................................................. 491
Clock ......................................................... 475
Coat hooks.............................................. 479
Condenser ............................................. 504
Console box ........................................... 469
Cooling system ..................................... 503
Engine overheating ...........................622
Cruise control
Cruise control ..................................... 286
Dynamic radar cruise control ......274
Cup holders ............................................ 470
Current fuel consumption ........... 116, 117
Curtain shield airbags ............................ 41
Customizable features....................... 642
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660Alphabetical index
IS200t_EE(OM53D77E)
E-mail .......................................................... 413
Eco drive mode .................................... 338
Eco Driving Indicator .............................113
Elapsed time .............................................. 116
Electric Power Steering (EPS)........340Warning light ...................................... 555
Electronic key...........................................122
Battery-saving function..................... 142
If the electronic key does not operate properly ............................. 615
Replacing the battery....................... 527
Emergency, in case of If a warning message is
displayed ........................................... 560
If the electronic key does not
operate properly ............................. 615
If the engine will not start .................613
If the vehicle battery is discharged.......................................... 618
If the warning buzzer sounds ......554
If the warning light turns on ..........554
If you have a flat tire .............. 586, 601
If you think something is wrong...............................................552
If your vehicle becomes stuck..... 626
If your vehicle has to be stopped in an emergency..........545
If your vehicle needs to be towed.............................................546
If your vehicle overheats ................ 622 Emergency brake signal......................341
Emergency flashers ............................. 544
Emergency tire puncture
repair kit ................................................ 586
Engine ....................................................... 632 ACCESSORY mode ..................... 205
Compartment ..................................... 499
Engine switch ...................................... 204
Hood ....................................................... 497
How to start the engine ................. 204
Identification number......................... 631
If the engine will not start ................. 613
Ignition switch (engine switch) ... 204
Overheating .........................................622
Engine coolant....................................... 503 Capacity................................................. 635
Checking ............................................... 503
Preparing and checking
before winter.................................... 346
Engine coolant temperature
gauge ........................................................ 93
Engine immobilizer system ..................75
Engine oil .................................................500 Capacity................................................. 633
Checking .............................................. 500
Preparing and checking
before winter.................................... 346
Engine oil maintenance data ........... 502
Engine switch ......................................... 204
EPS (Electric Power Steering) ....... 340
Warning light.......................................555
ERA-GLONASS .................................480
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