2018 Lexus IS350 engine overheat

5768-2. Steps to take in an emergency
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
●The needle of the engine coolant temperature gauge ( →P. 81) 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 tu rn 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, insp ect the hoses and
radiator core (radiator) for any
leaks.
Radiator
Cooling fans
If a large amount of coolant leaks,
immediately contact your Lexus
dealer.
If your vehicle overheats
The following may indicate that your vehicle is overheating.
Correction procedures
1
2
3
1
2

641Alphabetical index
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Child safety ................................................ 52
Airbag precautions ..............................38
Battery precautions ............... 481, 575
Child restraint system ......................... 53
How your child should wear the seat belt .......................................... 32
Installing child restraints..................... 57
Moon roof precautions...................... 161
Power window lock switch ............ 154
Power window precautions .......... 157
Rear door child-protectors ............. 119
Removed electronic key battery precautions................ 501
Seat belt extender precautions ........................................... 35
Seat belt precautions ..........................56
Seat heater precautions................... 416
Trunk precautions............................... 125
Child-protectors...................................... 119 Cleaning ....................................... 452, 456
Aluminum wheels .............................. 453
Exterior ................................................... 452
Interior ..................................................... 456
Seat belts................................................ 457
Clock.......................................................... 427
Coat hooks ............................................... 431
Compass ................................................. 439
Condenser...............................................478
Console box ............................................422
Cooling system ...................................... 476 Engine overheating .......................... 576
Cruise control Dynamic radar cruise control ..... 239
Cup holders.............................................423
Current fuel consumption .............................. 104, 105
Curtain shield airbags ............................36
Customizable features ......................... 611

643Alphabetical index
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
E-mail........................................................... 371
Eco drive mode .....................................288
Eco Driving Indicator............................. 101
EDR (Event data recorder) ...................10
Elapsed time ............................................ 104
Electric Power Steering (EPS) ....... 293
Warning light .......................................523
Electronic key ........................................... 110 Battery-saving function .................... 128
If the electronic key does not operate properly............................ 569
Replacing the battery ...................... 500
Emergency, in case of If a warning message is displayed ........................................529
If the electronic key does not operate properly ....... 569
If the engine will not start................567
If the vehicle battery is discharged ......................................... 572
If the warning buzzer sounds.................................................. 522
If the warning light turns on........... 522
If you have a flat tire ......................... 556
If you think something is wrong.............................................. 520
If your vehicle becomes stuck ..................................................... 580
If your vehicle has to be stopped in an emergency ........... 513
If your vehicle needs to be towed ........................................ 514
If your vehicle overheats ................576 Emergency flashers .............................. 512
Engine ....................................................... 587
ACCESSORY mode ....................... 179
Compartment ....................................... 471
Engine switch ........................................178
Hood........................................................468
How to start the engine....................178
Identification number...................... 586
If the engine will not start ............... 567
Ignition switch (engine switch) .....178
Overheating......................................... 576
Engine coolant ....................................... 476 Capacity................................................ 590
Checking ............................................... 476
Preparing and checking before winter .................................... 297
Engine coolant temperature gauge .......................................................... 81
Engine immobilizer system ................. 68
Engine oil ..................................................473 Capacity................................................ 588
Checking ............................................... 473
Preparing and checking before winter .................................... 297
Engine oil maintenance data ............475
Engine switch ........................................... 178
Enhanced VSC ......................................292
EPS (Electronic Power Steering) ........ 293 Warning light ....................................... 523
Event data recorder (EDR)................... 10
E

648Alphabetical index
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Moon roof................................................. 158
Door lock linked moon roof operation ..................... 159
Jam protection function ................... 159
Operation ............................................... 158
MP3 disc.................................................. 336
Multi-information display ..................... 86 Audio system-linked ...........................86
Drive information .................................. 92
Dynamic radar cruise control......239
LDA (Lane Departure Alert with steering control) ...................236
Navigation system-linked .................86
Settings .......................................................95
Warning message .............................529
Navigation system
*
Needle ......................................................... 95
Noise from under vehicle ....................... 8 Odometer .................................................... 81
Oil
Engine oil .............................................. 588
Front differential oil .............................591
Rear differential oil ............................ 592
Opener Hood........................................................468
Trunk .......................................................... 122
Outer foot lights Location ...................................................418
Replacing light bulbs ...................... 509
Wattage .................................................595
Outside rear view mirrors ................... 151 Adjusting and folding ......................... 151
Blind spot monitor ............................ 276
Linked mirror function when reversing.................................. 152
Mirror position memory ..................139
Outside rear view mirror defoggers.............................. 412
Outside temperature .............................. 81
Overheating, Engine ...........................576
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