2018 Lexus GS450h check oil

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GS450h_OM_OM30G62U_(U)
6-3. Do-it-yourself maintenance
■LED Lights
The lights other than the front turn signal light (vehicles with single-beam headlights) and
outer foot lights each consist of a number of LEDs. If any of the LEDs burn out, take your
vehicle to your Lexus dealer to have the light replaced.
■Condensation build-up on the inside of the lens
Temporary condensation build-up on the inside of the headlight lens does not indicate a
malfunction. Contact your Lexus dealer for mo re information in the following situations:
●Large drops of water have built up on the inside of the lens.
●Water has built up inside the headlight.
■When replacing light bulbs
→P. 388
WARNING
■Replacing light bulbs
●Turn off the lights. Do not attempt to replac e the bulb immediately after turning off the
lights.
The bulbs become very hot and may cause burns.
●Do not touch the glass portion of the light bu lb with bare hands. When it is unavoid-
able to hold the glass portion, use and hold with a clean dry cloth to avoid getting
moisture and oils on the bulb.
Also, if the bulb is sc ratched or dropped, it may blow out or crack.
●Fully install light bulbs and any parts used to secure them. Failure to do so may result
in heat damage, fire, or water entering th e headlight unit. This may damage the head-
lights or cause condensation to build up on the lens.
■To prevent damage or fire
●Make sure bulbs are fully seated and locked.
●Check the wattage of the bulb before installing to prevent heat damage.

4287-2. Steps to take in an emergency
GS450h_OM_OM30G62U_(U)
Indicates a malfunction in the brake override systemA buzzer also sounds.
→ Have the vehicle inspecte d by your Lexus dealer
immediately.
Indicates that engine oil level is low
This message may ap pear if the vehicle is stopped on a
slope. Move the vehicle to a level surface and check to
see if the message disappears.
A buzzer also sounds.
→ Check the level of engine oil, and add if necessary.
Indicates that the hybrid system has overheated
This message may be disp layed when driving under
severe operating conditions. (For example, when driv-
ing up a long steep hill.)
A buzzer also sounds.
→ Stop and check. ( →P. 461)
Indicates a malfunction in:
• The Automatic High Beam system (if equipped);
• The AFS (Adaptive Front-lighting System) (if equipped); or
• The LED headlight system
A buzzer also sounds.
→ Have the vehicle inspected by your Lexus dealer.
Warning messageDetails/Actions
(Flashes)

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

4317-2. Steps to take in an emergency
GS450h_OM_OM30G62U_(U)
7
When trouble arises
*: Refer to the separate “Scheduled Maintenance” or “Owner’s Manual Supplement”
for the maintenance interval applicable to your vehicle.
(U.S.A. only)
Indicates that all maintenance according to the driven
distance on the maintenance schedule
* should be per-
formed soon.
Comes on approximately 4500 miles (7200 km)
after the message has been reset.
→ If necessary, perform maintenance.
Indicates that the engine o il and oil filter should be
changed
→ Have the engine oil and oil filter checked and/or
changed by your Lexus dealer. After changing the
engine oil, the oil change system should be reset.
( → P. 355)
(U.S.A. only)
Indicates that all maintenanc e is required to correspond
to the driven distance on the maintenance schedule
*.
Comes on approximately 5000 miles (8000 km)
after the message has been reset. (The message will
not display properly unless the message has been
reset.)
→ Perform the necessary maintenance. Please reset
the message after the maintenance is performed.
(→ P. 344)
(If equipped)
Indicates that the Automati c High Beam switch was
pressed while the low beams were on
→ Turn the high beam headlights on before pressing
the Automatic High Beam switch.
(If equipped)
Indicates that, since the VSC (Vehicle Stability Control)
system was turned off, the pre-collision braking and pre-
collision brake assist are stopped (The pre-collision
warning function will be operational)
→ Turn the VSC on. ( →P. 271)
Warning messageDetails/Actions

GS450h_OM_OM30G62U_(U)
4738-1. Specifications
8
Vehicle specifications
*: The engine oil capacity is a reference quantity to be used when changing the engineoil. Warm up the engine and turn off the hybrid system, wait more than 5 minutes, and
check the oil level on the dipstick.
■Engine oil selection
“Toyota Genuine Motor Oil” is used in your Lexus vehicle. Use Lexus
approved “Toyota Genuine Motor Oil” or equivalent to satisfy the following
grade and viscosity.
Oil grade: ILSAC GF-5 multigrade engine oil
Lubrication system
Oil capacity
(Drain and refill ⎯ reference
*)
With filter
Without filter
6.7 qt. (6.3 L, 5.5 Imp.qt.)
6.2 qt. (5.9 L, 5.2 Imp.qt.)

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GS450h_OM_OM30G62U_(U)
8-1. Specifications
*: The fluid capacity is the quantity of reference.If replacement is necessary, contact your Lexus dealer.
Your Lexus vehicle is filled with “Toyota Genuine Differential Gear Oil” at the factory.
Use Lexus approved “Toyota Genuine Differen tial Gear Oil” or an equivalent oil of
matching quality to satisfy the above specific ation. Please contact your Lexus dealer for
further details.
Electrical system
12-volt battery
Open voltage at 68 °F (20 °C):12.0 V or higher
(Voltage is checked 20 minutes after the hybrid
system and all lights are turned off.)
Charging rates5 A max.
Hybrid transmission
Fluid capacity*6.01 qt. (5.69 L, 5.01 Imp.qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
■Hybrid transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may cause deterioration
in shift quality and ultimately damage the transmission of your vehicle.
Differential
Oil capacity1.43 qt. (1.35 L, 1.19 Imp.qt.)
Oil type and viscosityToyota Genuine Differential gear oil LT
75W-85 GL-5 or equivalent

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
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