2009 Lexus GS350 coolant temperature

145
2
When driving
GS_G_U (OM30B43U)
April 27, 2009 10:48 am
2-2. Instrument cluster
Gauges and meters
The units used on the speedometer may differ depending on the target
region.

The following gauges, meters and display illuminate when the
“ENGINE START STOP” switch is in IGNITION ON mode.
Tachometer
Displays the engine speed in revolutions per minute.
Speedometer
Displays the vehicle speed.
Fuel gauge
Displays the quantity of fuel remaining in the tank.
Engine coolant temperature gauge
Displays the engine coolant temperature.
Multi-information display
→ P. 1 5 2
GS_U_G.book Page 145 Monday, April 27, 2009 10:50 AM

148
2-2. Instrument cluster
GS_G_U (OM30B43U)
April 27, 2009 10:48 am
NOTICE
■To prevent damage to the engine and its components
●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. Check
the engine after it has cooled completely. (→P. 5 5 2 )
●Do not let the indicator needle of the tachometer enter the red zone, which indi-
cates the maximum engine speed.
■To activate the light sensitivity function properly
Do not affix a sticker or window tint to the rear window glass, or put an object
behind the rear seat.
GS_U_G.book Page 148 Monday, April 27, 2009 10:50 AM

420
4-3. Do-it-yourself maintenance
GS_G_U (OM30B43U)
April 27, 2009 10:48 am
CAUTION
The engine compartment contains many mechanisms and fluids that may move sud-
denly, become hot, or become electrically energized. To avoid death or serious injury,
observe the following precautions.
■When working on the engine compartment
●Keep hands, clothing, and tools away from the moving fan and engine drive belt.
●Be careful not to touch the engine, radiator , exhaust manifold, etc. right after driv-
ing as they may be hot. Oil and other fluids may also be hot.
●Do not leave anything that may burn easi ly, such as paper or rags, in the engine
compartment.
●Do not smoke, cause sparks or expose an open flame to fuel or the 12 volt battery.
Fuel and 12 volt battery fumes are flammable.
●Be extremely cautious when working on the 12 volt battery. It contains poisonous
and corrosive sulfuric acid.
■When working near the electric cooling fan or radiator grille
Be sure the “ENGINE START STOP” switch is OFF.
With the “ENGINE START STOP” switch in IGNITION ON mode, the electric
cooling fan may automatically start to run if the air conditioning is on and/or the
coolant temperature is high. ( →P. 4 3 2 )
■Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from getting
in the eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear due to
dirt in the air. Also a backfire could cause a fire in the engine compartment.
GS_U_G.book Page 420 Monday, April 27, 2009 10:50 AM

552
5-2. Steps to take in an emergency
GS_G_U (OM30B43U)
April 27, 2009 10:48 am
If your vehicle overheats
If your engine overheats:
Stop the vehicle in a safe place and turn off the air conditioning
system.
Check to see if steam is coming out from under the hood.
If you see steam: Stop the engine. Carefully lift the hood after the steam sub-
sides and then restart the engine.
If you do not see steam: Leave the engine running and carefully lift the hood.
Remove the engine compartment cover. ( →P. 4 2 6 )
Check to see if the cooling fan is operating.
If the fan is operating: Wait until the engine coolant temperature gauge begins to
fall and then stop the engine.
If the fan is not operating: Stop the engine immediately and call your Lexus dealer.
After the engine has cooled
down sufficiently, check the
coolant level and inspect the
radiator core (radiator) for any
leaks.STEP1
STEP2
STEP3
STEP4
STEP5
GS_U_G.book Page 552 Monday, April 27, 2009 10:50 AM

5
When trouble arises
553
5-2. Steps to take in an emergency
GS_G_U (OM30B43U)
April 27, 2009 10:48 am
■Overheating
In the following situations, your vehicle may be overheating.
●The engine coolant temperature gauge enters the red zone or a loss of power is
experienced.
●Steam is coming from under the hood.
CAUTION
■To prevent an accident or injury when in specting under the hood of your vehicle
●If steam is seen coming from under the food, do not open the food until the steam
has subsided. The engine compartment may be very hot, causing serious injury
such as burns.
●Keep hands and clothing away from the fan and engine drive belt while the
engine is running.
●Do not loosen the radiator cap while the engine and radiator are hot.
Serious injury, such as burns, may result from hot coolant and steam released
under pressure.
Add coolant if necessary.
Water can be used in an emer-
gency measure if coolant is
unavailable. ( →P. 5 6 6 )
Have the vehicle checked at your nearest Lexus dealer as soon as pos-
sible.
STEP6
GS_U_G.book Page 553 Monday, April 27, 2009 10:50 AM

606
Alphabetical index
GS_G_U (OM30B43U)
April 27, 2009 10:48 am
DoorsDoor lock...................................29, 41, 44
Rear door child protector ................ 45
Driver’s seat belt reminder light .... 509
Driver’s seat position memory ........... 56
Driving Correct posture .................................... 89
Procedures ............................................. 124
DVD player/changer.......................... 270
Electric power steering ..................... 200
Electronic key If the electronic key does not operate properly ....................545
Replacing battery ..............................458
Emergency, in case of If a warning light turns on ..............507
If a warning message is displayed ............................................. 516
If the electronic key does not operate properly ....................545
If the engine will not start........................................................ 542
If the shift lever cannot be shifted from “P”................................ 543
If the 12 volt battery is discharged .......................................548
If you have a flat tire ................ 531, 541
If you lose your keys......................... 544
If you think something is wrong ...................................................503
If your vehicle becomes stuck.... 555
If your vehicle needs to be towed ................................................... 496
If your vehicle overheats ................ 552 Engine
ACCESSORY mode....................... 134
Compartment ......................................424
Engine (ignition) switch.................... 133
Hood ......................................................... 421
How to start the engine ................... 133
If the engine will not start ............... 542
Overheating ........................................ 552
Engine compartment cover ............. 426
Engine coolant temperature gauge .......................................................145
Engine coolant Capacity ................................................ 566
Checking................................................. 431
Preparing and checking before winter.......................................217
Engine oil Capacity ................................................ 562
Checking................................................ 427
Preparing and checking before winter.......................................217
Engine oil maintenance data ........... 429
Engine (ignition) switch........................133
Enhanced vehicle stability control....................................................200
Event data recorder ............................505
First-aid kit storage belt ..................... 379
Floor mats ................................................ 378
Fluid Brake ....................................................... 433
Washer....................................................437
Fog lights Switch ........................................................158
Wattage ..................................................572
Foot light .................................................. 356
E
F
GS_U_G.book Page 606 Monday, April 27, 2009 10:50 AM

614
GS_G_U (OM30B43U)
April 27, 2009 10:48 am
What to do if...
What to do if...
A tire puncturesP. 5 3 1 /541If you have a flat tire
The engine does not start
P. 8 4Immobilizer system
P. 5 4 2If the engine will not start
P. 5 4 8If the 12 volt battery is discharged
The shift lever cannot be
moved outP. 5 4 3If the shift lever cannot be shifted
from “P”
The engine coolant temperature
gauge enters the red zone
Steam can be seen coming
from under the hood
P. 552If your vehicle overheats
The key is lostP. 5 4 4If you lose your keys
The 12 volt battery runs outP. 5 4 8If the 12 volt battery is discharged
The doors cannot be lockedP. 4 4Doors
The horn begins to soundP. 8 6Alarm
The vehicle is stuck in mud or
sandP. 5 5 5If the vehicle becomes stuck
GS_U_G.book Page 614 Monday, April 27, 2009 10:50 AM