2018 Lexus GS450h oil temperature

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GS450h_OM_OM30G62U_(U)
4-6. Driving tips
Winter driving tips
●Use fluids that are appropriate to the prevailing outside temperatures.
•Engine oil
• Engine/power cont rol unit coolant
• Washer fluid
●Have a service technician inspect the condition of the 12-volt battery.
●Have the vehicle fitted with four snow tires or purchase a set of tire chains for
the rear tires.
*
Ensure that all tires are the specified size and brand, and that chains match the size
of the tires.
*: Tire chains cannot be mounted on vehicles with front and rear tires of differing
sizes and vehicles with LDH and 19-inch tires.
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 me lt the ice. Wipe away the water imme-
diately to prevent it from freezing.
●To ensure proper operation of the c limate control system fan, remove any
snow that has accumulated on the air inlet vents in front of the windshield.
●Check for and remove any excess ice or snow that may have accumulated on
the exterior lights, vehicle’s roof, chassi s, around the tires or on the brakes.
●Remove any snow or mud from the bottom of your shoes before getting in the
vehicle.
Carry out the necessary preparations an d inspections before driving the vehi-
cle in winter. Always drive the vehicle in a manner appropriate to the prevail-
ing weather conditions.
Preparation for winter
Before driving the vehicle

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GS450h_OM_OM30G62U_(U)
6-3. Do-it-yourself maintenance
WARNING
The engine compartment contains many mechanisms and fluids that may move suddenly,
become hot, or become electrically energize d. To avoid death or serious injury, observe
the following precautions.
■When working on the engine compartment
●Make sure that the “POWER ON” on the multi-information display and the
“READY” indicator are both off.
●Keep hands, clothing and tools away from the moving fan and engine drive belt.
●Be careful not to touch the engine, power co ntrol unit, radiator, exhaust manifold, etc.
right after driving as they may be hot. Oil and other fluids may also be hot.
●Do not leave anything that may burn easily, such as paper and rags, in the engine
compartment.
●Do not smoke, cause sparks or expose an open flame to fuel. Fuel fumes are flamma-
ble.
■When working near the electric cooling fans or radiator grille
Be sure the power switch is off.
With the power switch in ON mode, the electric cooling fans may automatically start to
run if the air conditioning is on and/ or the coolant temperature is high. ( →P. 359)
■Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from getting in
your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner f ilter removed may cause excessive engine wear due to dirt
in the air.

GS450h_OM_OM30G62U_(U)
3556-3. Do-it-yourself maintenance
6
Maintenance and care
With the engine at operating temperature and turned off, check the oil level on
the dipstick.
■Checking the engine oil
Park the vehicle on level ground. Afte r warming up the engine and turning
off the hybrid system, wait more than 5 minutes for the oil to drain back into
the bottom of the engine.
Holding a rag under the end, pull
the dipstick out.
Wipe the dipstick clean.
Reinsert the dipstick fully.
Holding a rag under the end, pull the dipstick out and check the oil level.
Low
Normal
Excessive
The shape of the dipstick may differ depending on the type of vehicle or engine.
Wipe the dipstick and reinsert it fully.
Engine oil
1
2
3
4
5
1
2
3
Flat dipstickNon-flat dipstick
6

4307-2. Steps to take in an emergency
GS450h_OM_OM30G62U_(U)
Indicates that the tire position information cannot be rec-
ognized
→Drive for a short while an d check if the display
updates.
If the radio wave conditions improve, the display
may return to normal. If th e tire pressure is still not
displayed after driving for several minutes, stop the
vehicle in a safe place, turn the power switch off
then on again, and start driv ing. If the tire pressure is
still not displayed even after repeating this process
several times, have the vehicle inspected at your
Lexus dealer.
Indicates that the washer fluid level is low
→ Add washer fluid.
Except F SPORT models: Indicates that remaining fuel is
approximately 2.6 gal. (10.0 L, 2.2 Imp.gal.) or less
F SPORT models: Indicates remaining fuel is approxi-
mately 2.6 gal. (9.9 L, 2.2 Imp.gal.) or less
→ Refuel the vehicle.
Indicates that the outside temperature is approximately
37° F (3 °C) or lower
A buzzer also sounds.
→ Drive carefully, as the road may be icy.
Indicates that the power oil is scheduled to be changed
→Check the engine oil and change if necessary. After
changing the engine oil, the oil change system
should be reset. ( →P. 355)
(The indicator will not work properly unless the oil
maintenance data has been reset.)
Warning messageDetails/Actions

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GS450h_OM_OM30G62U_(U)
8-1. Specifications
Recommended viscosity: SAE 0W-20
SAE 0W-20 is the best choice for
good fuel economy and good start-
ing in cold weather.
If SAE 0W-20 is not available, SAE
5W-20 oil may be used. However, it
must be replaced with SAE 0W-20
at the next oil change.
Oil viscosity (0W-20 is explained here as an example):• The 0W in 0W-20 indicates the characteristic of the oil which allows cold startability. Oils with a lower value be fore the W allow for easier starting of
the engine in cold weather.
• The 20 in 0W-20 indicates the viscos ity characteristic of the oil when the
oil is at high temperature. An oil with a higher viscosity (one with a higher
value) may be better suited if the vehicle is operated at high speeds, or
under extreme lo ad conditions.
How to read oil container label:
The International Lubricant Specifi-
cation Advisory Committee
(ILSAC) Certification Mark is added
to some oil containers to help you
select the oil you should use.
Outside temperature

GS450h_OM_OM30G62U_(U)
4898-1. Specifications
8
Vehicle specifications
■Temperature A, B, C
The temperature grades are A (the highest), B, and C, representing the tire’s
resistance to the generation of heat and its ability to dissipate heat when
tested under controlled conditions on a specified indoor laboratory test
wheel.
Sustained high temperature can cause the ma terial of the tire to degenerate and
reduce tire life, and excessive temperature can lead to sudden tire failure.
Grade C corresponds to a level of perfor mance which all passenger car tires must
meet under the Federal Motor Vehicle Safety Standard No. 109.
Grades B and A represent higher levels of performance on the laboratory test
wheel than the minimum required by law.
Warning: The temperature grades of a tire assume that it is properly inflated and
not overloaded.
Excessive speed, underi nflation, or excessive loading, either separately or in com-
bination, can cause heat buildup and possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pressure
Tire pressure when the vehicle has been parked for
three hours or more, or has not been driven more than 1
mile or 1.5 km un der that condition
Maximum inflation pres-
sureThe maximum cold inflated pr essure to which a tire may
be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a manu-
facturer
Accessory weight
The combined weight (in exce ss of those standard items
which may be replaced) of hybrid transmission, power
steering, power brakes, power windows, power seats,
radio and heater, to the extent that these items are avail-
able as factory-installed eq uipment (whether installed
or not)
Curb weight
The weight of a motor vehicle with standard equipment,
including the maximum capacity of fuel, oil and coolant,
and if so equipped, air co nditioning and additional
weight optional engine
Maximum loaded vehicle
weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight150 lb. (68 kg) times the numb er of occupants specified
in the second column of Table 1
* that follows

532Alphabetical index
GS450h_OM_OM30G62U_(U)
Eco drive mode ..................................... 258
EDR (Event data recorder) ...................10
Electric motor (traction motor) ......... 66
Electric Power Steering (EPS) ....... 269Function ..................................................269
Warning light ...................................... 405
Warning message .............................. 410
Electronic key ........................................... 118 Battery-saving function .....................137
If the electronic key does not operate properly.............................454
Replacing the battery ...................... 382
Emergency, in case of If a warning buzzer sounds.......... 404
If a warning light turns on.............. 404
If a warning message is displayed ......................................... 410
If the 12-volt battery is discharged .........................................457
If the electronic key does not operate properly ........454
If the hybrid system will not start....................................... 450
If the parking brake cannot be released ........................452
If you have a flat tire ........................... 441
If you think something is wrong.............................................. 403
If your vehicle becomes stuck .... 466
If your vehicle has to be stopped in an emergency .............................397
If your vehicle needs to be towed ...................................... 398
If your vehicle overheats ................. 461 Emergency flashers ............................ 396
Energy monitor ........................................ 110
Engine
Accessory mode ................................ 183
Compartment ..................................... 353
Engine switch ........................................182
Hood..........................................................351
How to start the hy brid system ....182
Identification number......................... 471
Ignition switch (power switch) ..................................182
Overheating...........................................461
Power switch .........................................182
Engine compartment cover............. 354
Engine coolant ...................................... 358 Capacity................................................. 475
Checking ...............................................358
Preparing and checking before winter .................................... 276
Engine coolant temperature gauge ........................................................ 88
Engine oil ................................................. 355 Capacity................................................. 473
Checking ...............................................355
Oil level warning message .............410
Oil pressure warning message.............................410
Preparing and checking before winter .................................... 276
Engine oil maintenance data ............344
E

537Alphabetical index
GS450h_OM_OM30G62U_(U)
Malfunction indicator lamp .............. 404
Master warning light ........................... 406
Meter ............................................................ 88Head-up display.................................. 103
Indicators...................................................84
Instrument panel light control ...........91
Meters........................................................ 88
Multi-information display ..................95
Warning lights ........................................83
Micro dust and pollen filter .............. 293
Mirrors Inside rear view mirror ..................... 154
Outside rear view mirror defoggers ...........................................293
Outside rear view mirrors .............. 156
Vanity mirrors ....................................... 314
Moon roof..................................................163 Door lock linked moon roof operation ..................... 164
Jam protection function ................... 164
Operation ............................................... 163
Warning message .............................. 410
MP3 disc
*
Multi-information display ..................... 95 Drive information .................................. 97
Dynamic radar cruise control with full-speed range .................... 243
G-force ......................................................98
LKA (Lane-Keeping Assist) ......... 234 Navigation system
*
Noise from under vehicle ........................8
Odometer .................................................. 88
Oil
Engine oil ............................................... 473
Differential oil ....................................... 476
Opener Fuel filler door........................................ 213
Hood..........................................................351
Trunk ..........................................................128
Outer foot lights Outer foot lights .................................304
Replacing light bulbs ....................... 393
Wattage ................................................ 480
Outside rear view mirrors .................. 156 Adjusting and folding ........................156
Blind Spot Monitor ........................... 260
Linked mirror function when reversing................................. 158
Mirror position memory ..................145
Outside rear view mirror defoggers............................ 293
Outside temperature display ............. 89
Overheating............................................. 461
N
O
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.