overheating Lexus GS F 2017 Owner's Manual

1122. Instrument cluster
GS350_200t_GS F_OM_OM30F83E_(EE)
■Clock settings
■Customization
The meter display can be customized on the multi-information display.
(Customizable features: P. 634)
If the screen shown to the right is displayed
when trying to change the time display method
through
( P. 121) on the multi-informa-
tion display, the system may be malfunctioning.
Have the vehicle inspected by any authorized
Lexus retailer or Lexus authorized repairer, or
any reliable repairer immediately.
WARNING
■The information display at low temperatures
Allow the interior of the vehicle to warm up before using the liquid crystal information
display. At extremely low temperatures, the information display monitor may respond
slowly, and display changes may be delayed.
For example, there is a lag between the driver’s shifting and the new gear number
appearing on the display. This lag could cau se the driver to downshift again, causing
rapid and excessive engine braking and po ssibly an accident resulting in death or
injury.
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. 602)

1202. Instrument cluster
GS350_200t_GS F_OM_OM30F83E_(EE)
NOTICE
■To prevent damage to the engine and its components
●Do not let the indicator of the tachometer enter the red zone, as it represents the
engine speed range which exceeds the maximum safe engine speed.
●In the following situations, the engine may be overheating. In this case, immediately
stop the vehicle in a safe place, and check the engine after it has cooled completely. (  P. 602)

2384-1. Before driving
GS350_200t_GS F_OM_OM30F83E_(EE)
■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 change s.
■Transmission information
To maintain engine braking efficiency, when using engine braking, when driv-
ing on a long steep downgrade, do not use the transmission in D . If in the M
mode, the transmission shift range position must be in 4 or lower. ( P. 249)
■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. 602)
■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.
WARNING
Follow all the instructions described in this se ction. Failure to do so could cause an acci-
dent resulting in death or serious injury.
■Trailer towing precautions
When towing, make sure that none of the weight limits are exceeded. ( P. 234)
■To avoid accident or injury
●Do not tow a trailer when the compact spare tire is installed on your vehicle.
●Do not tow a trailer when the tire installed is repaired with the emergency tire punc-
ture repair kit.
●Do not use cruise control (if equipped), dynamic radar cruise control (if equipped) or
dynamic radar cruise control with full-speed range (if equipped) when trailer towing.
■Vehicle speed in towing
Observe the legal maximum speeds for trailer towing.
■Before descending hills or long declines
Reduce speed and downshift. However, never downshift suddenly while descending
steep or long downhill grades.
■Operation of the brake pedal
Do not hold the brake pedal depressed often or for long periods of time.
Doing so may result in the brake ov erheating or reduce braking effects.

243
4-2. Driving procedures
4
Driving
GS350_200t_GS F_OM_OM30F83E_(EE)
■When the steering lock cannot be released
■Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, the motor may be suspended if the
engine is turned on and off repeatedly in a sh ort period of time. In this case, refrain from
operating the engine. After about 10 seconds, the steering lock motor will resume func-
tioning.
■When “Check Entry & Start System” will be displayed on the multi-information display
The system may be malfunctioning. Have the vehicle inspected by any authorized Lexus
retailer or Lexus authorized repairer, or any reliable repairer immediately.
■If the electronic key battery is depleted P. 491
■Operation of the engine switch
●If the switch is not pressed shortly and fi rmly, the engine switch mode may not change
or the engine may not start.
●If attempting to restart the engine immediately after turning the engine switch off, the
engine may not start in some cases. After turning the engine switch off, please wait a
few seconds before restarting the engine.
■If the smart entry & start system has be en deactivated in a customized setting
 P. 642
“Steering Lock active” will be displayed on the
multi-information display.
Check that the shift lever is set in P. Press the
engine switch while turning the steering wheel
left and right.

257
4-2. Driving procedures
4
Driving
GS350_200t_GS F_OM_OM30F83E_(EE)
■Parking brake operation
●When the engine switch is not in IGNI TION ON mode, the parking brake cannot be
released using the parking brake switch.
●When the engine switch is not in IGNITION ON mode, automatic mode (automatic
brake setting and releasing) is not available.
●If the parking brake is operated repeatedly over a short period of time, the system may
restrict operation to prevent overheating. If this happens, refrain from operating the
parking brake. Normal operation wi ll return after about 1 minute.
●Vehicles with towing package: In situations such as when parking while towing a trailer,
the maximum amount of braking force can be used by pressing the parking brake
switch with the parking brake already set.
●Vehicles without towing package: In situations such as when parking on a steep slope *,
the maximum amount of braking force can be used by pressing the parking brake
switch with the parking brake already set.
* : Use wheel chocks when parking on a steep slope.
■Parking brake operation sound
When the parking brake operates, a motor sound (whirring sound) may be heard. This
does not indicate a malfunction.
■Parking brake indicator light
●Depending on the engine switch mode, the parking brake indicator light will come on
and stay on as described below:
IGNITION ON mode: Comes on until the parking brake is released.
Not in IGNITION ON mode: Stays on for approximately 15 seconds.
●When the engine switch is turned off with the parking brake set, the parking brake indi-
cator light will stay on for about 15 seco nds. This does not indicate a malfunction.
■When there is a malfunction in the system
Warning lights and/or warning message will turn on or flash. ( P. 520, 524)
Depending on the condition, the park ing brake indicator light may flash.
■Parking the vehicle P. 222
■Parking brake engaged warning buzzer P. 528
■Usage in winter time P. 383

5327-2. Steps to take in an emergency
GS350_200t_GS F_OM_OM30F83E_(EE)
Indicates that the parking brake system is overheating
A buzzer also sounds.
 Do not use the parking brake until the message dis-
appears.
Indicates an engine malfunction
A buzzer also sounds.
 Have the vehicle inspected by any authorized Lexus
retailer or Lexus authorized repairer, or any reliable
repairer.
Indicates an engine malfunction
A buzzer also sounds.
 Have the vehicle inspected by any authorized Lexus
retailer or Lexus authorized repairer, or any reliable
repairer.
Indicates an engine malfunction
A buzzer also sounds.
 Have the vehicle inspected by any authorized Lexus
retailer or Lexus authorized repairer, or any reliable
repairer.
Warning messageDetails/Actions

6027-2. Steps to take in an emergency
GS350_200t_GS F_OM_OM30F83E_(EE)
If your vehicle overheats
●The needle of the engine coolant temperature gauge ( P. 108, 113) enters
the red zone or a loss of engine power is experienced. (For example, the vehi-
cle 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 is coming 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, imme-
diately contact any authorized Lexus
retailer or Lexus authorized repairer, or
any reliable repairer.
The following may indicate that your vehicle is overheating.
Correction procedures
1
2
3
1
2

661
Alphabetical index
GS350_200t_GS F_OM_OM30F83E_(EE)
Clock ...............................................109, 429
Coat hooks .............................................. 434
Condenser ............................................. 466
Console box ........................................... 420
Console box light................................... 421
Coolant ..................................................... 464
Capacity ................................................. 625
Checking ............................................... 464
Preparing and checking before winter ....................................383
Cooling system ...................................... 464 Engine overheating ..........................602
Cruise control Cruise control .....................................355
Dynamic radar cruise control with full-speed range......................331
Dynamic radar cruise control ..... 343
Cup holders ............................................. 421
Curtain shield airbags ............................ 51
Customizable features ....................... 634
DAB (Digital Audio Broadcast) *
Daytime running light system ......... 264
Defogger Front windshield ................................. 402
Outside rear view mirrors.............402
Rear window ........................................ 402
Differential Front differential.................................. 627
Rear differential ................................... 627 Digital Audio Broadcast (DAB)
*
Dimensions ............................................... 612
Display 12.3-inch display ................................ 394
Drive information.......................122, 130
Dynamic radar cruise control
with full-speed range ..................... 331
Dynamic radar cruise control ..... 343
LDA (Lane Departure Alert with steering control)..................... 321
LKA (Lane-Keeping Assist) .......... 312
Multi-information display.........121, 129
Trip information ...........................108, 113
Warning message ............................ 524
Do-it-yourself maintenance ............. 449
Door courtesy lights Location ................................................... 416
Wattage ................................................... 631
Door lock Doors......................................................... 159
Smart entry & start system ............. 173
Wireless remote control ................. 154
Doors...........................................................159 Automatic door locking and
unlocking system ............................. 163
Door glasses.......................................... 214
Door lock ................................................ 162
Open door warning buzzer .......... 174
Open door warning light .............. 520
Outside rear view mirrors ................ 211
Rear door child-protector ............. 163
D
* : Refer to the “NAVIGATION AND MULTIMEDIA
SYSTEM OWNER’S MANUAL”.

663
Alphabetical index
GS350_200t_GS F_OM_OM30F83E_(EE)
Emergency brake signal .................... 376
Emergency flashers ............................ 508
Emergency tire puncture
repair kit ................................................ 573
Engine......................................................... 616 Accessory mode.................................. 241
Compartment...................................... 454
Engine switch....................................... 240
Hood ..........................................................451
How to start the engine .................. 240
Identification number ........................ 615
Ignition switch
(engine switch) ................................ 240
Overheating .........................................602
Engine compartment cover ............. 457
Engine coolant ....................................... 464 Capacity ................................................. 625
Checking ............................................... 464
Preparing and checking before winter ....................................383
Engine coolant temperature gauge.............................................. 108, 113
Engine oil.................................................. 459 Capacity .................................................. 618
Checking ...............................................459
Oil level warning message ........... 524
Oil pressure warning message.............................................. 524
Preparing and checking before winter ....................................383 Engine switch ......................................... 240
Auto power off function ..................242
Changing the engine switch modes.................................................... 241
If your vehicle has to be stopped in an emergency .........509
Starting the engine............................ 240
EPS (Electric Power Steering) ....... 376
Function.................................................. 376
Warning light.........................................519
Warning message ............................ 524
Expert mode........................................... 378
First-aid kit storage net ...................... 425
Flat tire
Vehicles with spare tire.................. 557
Vehicles without spare tire........... 573
Floor mats ................................................... 42
Fluid Automatic transmission.................. 626
Brake ....................................................... 628
Washer ................................................... 470
Fog lights .................................................. 275
Replacing light bulbs ....................... 504
Switch .......................................................275
Follow me home system .................... 263
Footwell light ............................................416
Front air conditioning system .......... 396
Front fog lights ....................................... 275 Replacing light bulbs ....................... 504
Switch .......................................................275
F
*: Refer to the “NAVIGATION AND MULTIMEDIA
SYSTEM OWNER’S MANUAL”.

668Alphabetical index
GS350_200t_GS F_OM_OM30F83E_(EE)
Multi-information display ........... 121, 129
Boost meter/oil temperature
gauge/oil pressure gauge...........123
Drive information ...................... 122, 130
Dynamic radar cruise control ..... 343
Dynamic radar cruise control
with full-speed range......................331
“F” content ............................................... 132
G-force.......................................... 124, 135
Lap timer ..................................................132
LDA ((Lane Departure Alert with steering control) ..................... 317
LKA (Lane-Keeping Assist) .........307
Torque distribution .............................134
Warning message............................. 524
nanoe  system .....................................406
Navigation system *
Odometer........................................ 108, 113 Oil Engine oil ................................................ 618
Front differential oil ........................... 627
Rear differential oil............................. 627
Opener
Fuel filler door...................................... 282
Hood ..........................................................451
Trunk ......................................................... 166
Outer foot lights
Location....................................................416
Replacing light bulbs....................... 500
Wattage....................................................631 Outside rear view mirrors ................... 211
Adjusting and folding .......................... 211
BSM (Blind Spot Monitor) ........... 363
Linked mirror function
when reversing ................................. 212
Mirror position memory .................. 199
Outside rear view mirror defoggers ......................................... 402
Outside temperature display .............................................109, 115
Overheating, Engine .......................... 602
Paddle shift switches ........................... 248
Parking assist sensors *
Parking brake......................................... 256
If the parking brake cannot be released ....................................... 592
Operation ............................................. 256
Parking brake engaged warning buzzer............................... 524
Parking brake engaged
warning message .......................... 524
PCS
(Pre-Crash Safety system)............ 295Function.................................................. 295
Warning light.........................................519
Warning message ............................ 524
Personal lights.......................................... 417
Pop-up display.............................. 126, 138
Pollen removal mode.......................... 402
Power easy access system .................199
Power outlets ......................................... 430
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