2018 Lexus GS450h transmission

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GS450h_OM_OM30G62U_(U)
7-2. Steps to take in an emergency
If your vehicle needs to be towed
The following may indicate a problem with your transmission. Contact your
Lexus dealer or commercial to wing service before towing.
●The hybrid warning message shows on the multi-information display and the
vehicle does not move.
●The vehicle makes an abnormal sound.
Do not tow with a sling-type truck to
prevent body damage.
If towing is necessary, we recommend having your vehicle towed by your
Lexus dealer or commercial towing se rvice, using a wheel-lift type truck or
flatbed truck.
Use a safety chain system for all towing, and abide by all state/provincial and
local laws.
Situations when it is necessary to contact dealers before towing
Towing with a sling-type truck
Towing with a wheel-lift type truck
From the frontFrom the rear
Use a towing dolly under the rear
wheels. Use a towing dolly under the front
wheels.

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GS450h_OM_OM30G62U_(U)
7-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer
sounds
Calmly perform the following actions if any of the warning lights comes on or
flashes. If a light comes on or flashes, but then goes off, this does not necessar-
ily indicate a malfunction in the system. However, if this continues to occur,
have the vehicle inspecte d by your Lexus dealer.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
(U.S.A.)
(Canada)
Brake system warning light (warning buzzer) •Low brake fluid
• Malfunction in the electronically controlled brake system
→ Immediately stop the vehicle in a safe place and contact your
Lexus dealer. Continuing to drive the vehicle may be dangerous.
(If equipped)
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
→ Immediately stop the vehicle in a safe place and contact your
Lexus dealer.
(U.S.A.)
(Canada)
Malfunction indicator lamp Indicates a malfunction in:
• The hybrid system;
• The electronic engine control system;
• The electronic throttle control system; or
• The electronic hybrid transmission control system
→ Have the vehicle inspected by your Lexus dealer immediately.
SRS warning light
Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system
→ Have the vehicle inspected by your Lexus dealer immediately.
(U.S.A.)
(Canada)
ABS warning light Indicates a malfunction in:
• The ABS; or
• The brake assist system
→ Have the vehicle inspected by your Lexus dealer immediately.

4277-2. Steps to take in an emergency
GS450h_OM_OM30G62U_(U)
7
When trouble arises
Indicates that the vehicle is unable to drive over 65 mph
(110 km/h) until the transmission warms upA buzzer also sounds.
→ Wait until the transmission warms up.
Indicates that the parking brake is set automatically while
the brake hold system is holding the brakes
A buzzer also sounds.
→ Release the parking brake.
Indicates a malfunction in th e Drive-Start Control system
A buzzer also sounds.
→ Have the vehicle inspecte d by your Lexus dealer
immediately.
Warning messageDetails/Actions

4677-2. Steps to take in an emergency
GS450h_OM_OM30G62U_(U)
7
When trouble arises
NOTICE
■To avoid damaging the transmission and other components
●Avoid spinning the rear wheels and depressing the accelerator pedal more than nec-
essary.
●If the vehicle remains stuck even after these procedures are performed, the vehicle
may require towing to be freed.

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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

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

533Alphabetical index
GS450h_OM_OM30G62U_(U)
Engine switch .......................................... 182Auto power off function................... 184
Changing the power switch modes ................................................... 183
If your vehicle has to be stopped in an emergency .............................397
Starting the hybrid system .............. 182
EPS (Electric Power Steering) ....... 269 Function ..................................................269
Warning light ...................................... 405
Warning message .............................. 410
EV drive mode.........................................187
Event data recorder (EDR) ...................10
First-aid kit storage net ........................313
Flat tire ........................................................441
Floor mats ................................................... 26
Fluid Brake ........................................................ 477
Hybrid transmission.......................... 476
Washer .................................................... 361
Footwell light .......................................... 304
Front passenger occupant classification system ............................ 46
Front personal lights............................305
Front seats .................................................143 Adjustment ............................................. 143
Cleaning ................................................ 340
Correct driving posture .................... 28
Driving position memory ................ 145
Head restraints ..................................... 150
Power easy access system ............ 145
Seat heaters ......................................... 302
Seat position memory....................... 145
Seat ventilators ................................... 302 Front side marker lights..................... 200
Light switch...........................................200
Replacing light bulbs ....................... 393
Welcome light illumination control.................................................... 123
Front turn signal lights .......................... 195 Replacing light bulbs ........... 392, 393
Turn signal lever ...................................195
Wattage ................................................ 480
Fuel............................................................... 213 Capacity..................................................472
Fuel gauge ...............................................88
Information..............................................481
Refueling .................................................. 213
Type...........................................................472
Warning light .......................................406
Warning messages ............................410
Fuel consumption Average fuel consumption ...............97
Average fuel consumption after refueling .......................................97
Current fuel consumption.................97
Fuel filler door.......................................... 213 Refueling .................................................. 213
When the fuel filler door cannot be opened ........................... 215
Fuses.......................................................... 384
Garage door opener............................ 321
Gauges........................................................ 88
Glove box ............................................... 308
Glove box light...................................... 308
F
G

534Alphabetical index
GS450h_OM_OM30G62U_(U)
Hands-free system (for cellular phone)
*
HD Radio® system*
Head restraints ....................................... 150
Headlight cleaner.......................208, 210
Headlights ...............................................200 Adaptive Front-lighting System (AFS) .................................... 201
Headlight leveling warning message ............................ 410
Light switch .......................................... 200
Replacing light bulbs ........................393
Headlights aim ............................. 389, 521
Head-up display..................................... 103
Heated steering wheel ........................ 301
Heaters Air conditioning system ..................287
Heated steering wheel ................... 302
Seat heaters ......................................... 302
Outside rear view mirrors .............293
High-voltage components .................. 70
Hood ........................................................... 351 Open ......................................................... 351
Warning message .............................. 410
Hooks Cargo hooks ..........................................312
Coat hooks .......................................... 320
Luggage hook .......................................312
Retaining hooks (floor mat) ............. 26 Horn............................................................. 153
Hybrid battery (traction battery)
Location .................................................... 70
Specification ..........................................472
Hybrid battery (traction battery) air vents .....................................................70
Hybrid system............................................66 Emergency shut off system ............... 71
Energy monitor/consumption screen...................... 109
EV drive mode .....................................187
High voltage components ............... 70
Hybrid System Indicator ................... 92
Hybrid system precautions ............. 70
Hybrid vehicle driving tips .............274
If the hybrid system will not start .......................................450
Overheating...........................................461
Power (ignition) switch.....................182
Regenerative braking ..........................67
Starting the hybrid system...............182
Vehicle proximity notification system ......................................................67
Hybrid System Indicator .......................92
Hybrid transmission ..............................189 If the shift lever cannot be shifted from P ..............193
Paddle shift switches........................... 191
S mode...................................................... 192
H