coolant Lexus GS450h 2015 Opening, closing and locking the doors and trunk / LEXUS 2015 GS450H (OM30E26U) User Guide

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GS450h_OM_OM30E26U_(U)
7-2. Steps to take in an emergency
If your vehicle overheats
■If the needle of the engine coolant temperature gauge enters the red
zone
Stop the vehicle in a safe place an d turn off the air conditioning sys-
tem, and then stop the hybrid system.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the hybrid system has cooled down sufficiently, inspect the
hoses and cooling system for leaks.
Radiator
Cooling fans
If a large amount of coolant
leaks, immediately contact your
Lexus dealer.
The following may indicate that your vehicle is overheating.
●The needle of the engine coolant temperature gauge ( P. 91) enters
the red zone or a loss of hybrid system power is experienced. (For
example, the vehicle speed does not increase.)
●“Hybrid System Overheat” ( P. 527) is shown on the multi-informa-
tion display.
●Steam comes out from under the hood.
Correction procedures
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5677-2. Steps to take in an emergency
GS450h_OM_OM30E26U_(U)
7
When trouble arises
The coolant level is satisfactory if it is between the “FULL” and
“LOW” lines on the reservoir.
Reservoir
“FULL”
“LOW”
Coolant inlet cap
Add coolant if necessary.
( P. 569)
Water can be used in an emer-
gency if engine coolant is unavail-
able.
Start the hybrid system and turn the air conditioning system on to
check that the radiator cooling fa ns operate and to check for coolant
leaks from the radiator or hoses.
The fans operate when the air conditioning system is turned on immediately
after a cold start. Confirm that the fans are operating by checking the fan
sound and air flow. If it is difficult to check these, turn the air conditioning sys-
tem on and off repeatedly. (The fans may not operate in freezing tempera-
tures.)
If the fans are not operating:
Stop the hybrid system immediately and contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Lexus dealer.
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5687-2. Steps to take in an emergency
GS450h_OM_OM30E26U_(U)
■If “Hybrid System Overheat” is shown on the multi-information dis-
play
Stop the vehicle in a safe place.
Stop the hybrid system and carefully lift the hood.
After the hybrid system has cooled down, inspect the hoses and radi-
ator core (radiator) for any leaks.Radiator
Cooling fans
If a large amount of coolant
leaks, immediately contact your
Lexus dealer.
The coolant level is satisfactory if it is between the “FULL” and
“LOW” lines on the reservoir.
Reservoir
“FULL”
“LOW”
Add coolant if necessary.
Water can be used in an emer-
gency if power control unit coolant
is unavailable.
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5697-2. Steps to take in an emergency
GS450h_OM_OM30E26U_(U)
7
When trouble arises
Start the hybrid system and check for the multi-information display.
If the message does not disappear:
Stop the hybrid system and contact your Lexus dealer.
If the message is not displayed:
Have the vehicle inspected at the nearest Lexus dealer.
■When adding coolant
Add coolant in accordance with the following procedure.
Remove caps A and B.
Add coolant through the inlet of ca p A up to the B-line, and then
install cap A.
Add coolant through the inlet of cap B until it is full, and then install
cap B.
Cap A
Cap B
B-line (Target fill line)
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5707-2. Steps to take in an emergency
GS450h_OM_OM30E26U_(U)
CAUTION
■When inspecting under the hood of your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
●If steam is seen coming from under the hood, do not open the hood until the
steam has subsided. The engine compartment may be very hot.
●After the hybrid system has been turned off, check that the indicator on the
power switch and the “READY” indicator are off.
When the hybrid system is operating, the gasoline engine may automatically
start, or the cooling fan may suddenly oper ate even if the gasoline engine stops.
Do not touch or approach rotating parts such as the fan, which may lead to fin-
gers or clothing (especially a tie, a scarf or a muffler) getting caught, resulting in
serious injury.
NOTICE
■When adding engine/power control unit coolant
Add coolant slowly after the hybrid syst em has cooled down sufficiently. Adding
cool coolant to a hot hybrid system too quickly can cause da mage to the hybrid
system.
■To prevent damage to the cooling system
Observe the following precautions:
●Avoid contaminating the coolant with foreign matter (such as sand or dust etc.).
●Do not use any coolant additives.
●Do not loosen the cool ant inlet cap or the
coolant reservoir cap while the hybrid sys-
tem and radiator are hot.
High temperature steam or coolant could
spray out.

GS450h_OM_OM30E26U_(U)
5798-1. Specifications
8
Vehicle specifications
Cooling system
Capacity
Gasoline
engine9.9 qt. (9.4 L, 8.3 Imp.qt.)
Pow e r
control unit3.3 qt. (3.1 L, 2.7 Imp.qt.)
Coolant typeUse either of the following:• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based non-silicate, non-amine, non- nitrite, and non-borate
coolant with long-life hybrid organic acid tech-
nology
Do not use plain water alone.
Ignition system
Spark plug
Make
GapDENSO FK20HBR8
0.031 in. (0.8 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

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GS450h_OM_OM30E26U_(U)
8-1. Specifications
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sureTire 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 under that condition
Maximum inflation pres-
sureThe maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a man-
ufacturer
Accessory weight
The combined weight (in excess 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 available as factory-installed equipment
(whether installed or not)
Curb weight
The weight of a motor vehicle with standard equip-
ment, including the maximum capacity of fuel, oil and
coolant, and if so equipped, air conditioning 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 number of occupants speci-
fied in the second column of Table 1
* that follows
Occupant distributionDistribution of occupants in a vehicle as specified in
the third column of Table 1
* below
Production options weight
The combined weight of installed regular production
options weighing over 5 lb. (2.3 kg) in excess of the
standard items which they replace, not previously
considered in curb weight or accessory weight,
including heavy duty brakes, ride levelers, roof rack,
heavy duty 12-volt battery, and special trim
RimA metal support for a tire or a tire and tube assembly
upon which the tire beads are seated

636Alphabetical index
GS450h_OM_OM30E26U_(U)
Child restraint system............................ 57Booster seats, definition .................... 57
Booster seats, installation.................. 67
Convertible seats, definition ............ 57
Convertible seats, installation ......... 64
Front passenger occupant classification system ......................... 49
Infant seats, definition .......................... 57
Infant seats, installation ....................... 64
Installing CRS with LATCH anchors ..................... 62
Installing CRS with seat belts .......... 64
Installing CRS with top tether strap .........................68
Child safety ................................................ 56 12-volt battery precautions ............................. 441, 565
Airbag precautions ................................41
Child restraint system ......................... 57
How your child should wear the seat belt ................................. 33, 35
Installing child restraints.......................61
Moon roof precautions.....................174
Power window lock switch .............167
Power window precautions .......... 170
Rear door child-protectors ........... 140
Removed electronic key battery precautions................ 461
Seat belt comfort guide ..................... 33
Seat belt extender precautions ...... 37
Seat belt precautions ..........................60
Seat heater precautions................. 384
Trunk precautions............................... 146 Child-protectors .................................... 140
Cleaning ........................................ 408, 412
Aluminum wheels ..............................409
Exterior .................................................. 408
Interior ....................................................... 412
Seat belts.................................................. 413
Clock..........................................................376
Coat hooks ............................................. 390
Condenser.............................................. 436
Console box ........................................... 369
Console box light ................................. 369
Consumption screen ..............................114
Coolant .....................................................434 Capacity................................................. 579
Checking ............................................... 434
Preparing and checking before winter......................................................319
Cooling system ......................................434 Engine overheating ..........................566
Hybrid system overheating ..........566
Cruise control Cruise control ..................................... 236
Dynamic radar cruise control ..... 240
Dynamic radar cruise control with full-speed range ................... 255
Cup holders............................................ 370
Curtain shield airbags ............................39
Customizable features ...................... 599

638Alphabetical index
GS450h_OM_OM30E26U_(U)
Electronic key ......................................... 120Battery-saving function .................... 129
If the electronic key does not operate properly............................ 559
Replacing the battery ...................... 460
Emergency, in case of If a warning buzzer sounds.......... 503
If a warning light turns on.............. 503
If a warning message is displayed ......................................... 513
If the 12-volt battery is discharged .........................................562
If the electronic key does not operate properly ....... 559
If the hybrid system will not start....................................... 554
If the parking brake cannot be released ........................557
If the shift lever cannot be shifted from P ........... 556
If you have a flat tire ........................... 541
If you think something is wrong.............................................. 502
If your vehicle becomes stuck ...... 571
If your vehicle has to be stopped in an emergency ............................ 495
If your vehicle needs to be towed ...................................... 496
If your vehicle overheats ............... 566
Emergency flashers ............................. 494
Energy monitor ........................................ 112 Engine
Accessory mode .................................194
Compartment ..................................... 429
Engine switch ........................................193
Hood........................................................ 426
How to start the hy brid system ....193
Identification number....................... 575
Ignition switch (power switch) ..................................193
Overheating.........................................566
Power switch .........................................193
Engine compartment cover............. 430
Engine coolant .......................................434 Capacity................................................. 579
Checking ............................................... 434
Preparing and checking before winter ......................................319
Engine coolant temperature gauge .......................................................... 91
Engine oil ................................................... 431 Capacity................................................. 577
Checking ................................................. 431
Oil level warning message ........... 525
Oil pressure warning message.............................514
Preparing and checking before winter ......................................319
Engine oil maintenance data ............. 416
Engine switch ........................................... 193
EPS (Electric Power Steering) ....... 285 Function ..................................................285
Warning light .......................................504
Warning message.............................. 518
EV drive mode ...................................... 200
Event data recorder (EDR).....................11

644Alphabetical index
GS450h_OM_OM30E26U_(U)
Outside rear view mirrors ..................164Adjusting and folding........................ 164
Blind Spot Monitor............................. 301
Linked mirror function when reversing ................................. 165
Mirror position memory .................. 152
Outside rear view mirror defoggers ........................... 360
Outside temperature display ..............97
Overheating ........................................... 566
Paddle shift switches ........................... 205
Parking assist sensors (intuitive parking assist)
*
Parking brake............................................ 211 If the parking brake cannot be released ........................557
Operation ................................................. 211
Parking brake engaged warning buzzer ............................... 522
Parking brake engaged warning message ........................... 522
Parking lights ............................................ 217 Light switch ............................................. 217
Replacing light bulbs ....................... 489
Welcome light illumination cont rol ..........................123 PCS (Pre-Collision System).............. 291
Function .................................................... 291
PCS OFF switch ................................ 293
Warning light ...................................... 505
Warning message....................... 515, 526, 532
Personal lights ....................................... 364
Power control unit ................................... 76
Power control unit coolant................434 Capacity................................................. 579
Checking ............................................... 434
Preparing and checking before winter......................................................319
Power easy access system ................. 152
Power outlets ......................................... 378
Power steering (Electric Power Steering system)................................ 285 Warning light .......................................504
Warning message.............................. 518
Power switch............................................ 193
Power trunk opener and closer ....... 143
Power windows....................................... 167 Door lock linked window operation ...........................169
Jam protection function................... 168
Operation................................................ 167
Window lock switch .......................... 167
P