2016 Lexus GS450h radiator

4597-2. Steps to take in an emergency
GS450h_OM_OM30E99U_(U)
7
When trouble arises
■If “Hybrid System Overheated Reduced Output Power” is shown on the
multi-information displayStop 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 radiator
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 emergency
if power control unit coolant is
unavailable.
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.
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4617-2. Steps to take in an emergency
GS450h_OM_OM30E99U_(U)
7
When trouble arises
WA R N I N G
■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 of f, 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 operate even if the gasoline engine stops. Do not touch
or approach rotating parts such as the fa n, which may lead to fingers or clothing
(especially a tie, a scarf or a muffler) ge tting caught, resulting in serious injury.
NOTICE
■When adding engine/power control unit coolant
Add coolant slowly after the hybrid system has cooled down sufficiently. Adding cool
coolant to a hot hybrid system too quickly can cause damage 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 additive.
●Do not loosen the coolant inlet cap or the
coolant reservoir cap while the hybrid system
and radiator are hot.
High temperature steam or coolant could
spray out.

535Alphabetical index
GS450h_OM_OM30E99U_(U)
Radar cruise control (dynamic radar cruise control with
full-speed range) .................................241
Radiator .................................................... 355
Radio
*
RBDS (Radio Broadcast Data Systems)
*
Rear air conditioning system ........... 296
Rear door sunshades ............................316
Rear personal lights............................. 303
Rear side marker lights ........................ 197 Light switch .............................................197
Replacing light bulbs ....................... 388
Welcome light illumination control ........................... 121
Rear seat heaters..................................300
Rear sunshade .........................................316 Operation ............................................... 316
Reverse operation feature...............317
Rear turn signal lights ...........................192 Replacing light bulbs ....................... 388
Turn signal lever .................................. 192
Rear view mirror Inside rear view mirror ..................... 152
Outside rear view mirrors .............. 154
Rear view monitor system
*
Rear window defoggers ......................291
Refueling ................................................... 210 Capacity ................................................ 468
Fuel types .............................................. 468
Opening the fuel tank cap................ 211
When the fuel filler door cannot be opened ........................... 212 Regenerative braking............................. 67
Remote Touch
*.................................... 280
Replacing Electronic key battery ......................377
Fuses ........................................................ 379
Light bulbs.............................................386
Tires .......................................................... 437
Reporting safety defects for U.S. owners .................................. 506
Resetting the message indicating maintenance is required ................ 340
Rev indicator ............................................. 88
Rev peak ..................................................... 88
Road accident cautions ......................... 72
Seat belts .................................................... 30 Adjusting the seat belt........................ 30
Automatic Locking Retractor .......... 31
Child restraint system installation ............................................. 59
Cleaning and maintaining the seat belt ....................................... 337
Emergency Locking Retractor (ELR) ................................... 31
How to wear your seat belt............. 30
How your child should wear the seat belt ...........................................32
Pregnant women, proper seat belt use ......................................... 33
Reminder light and buzzer ........... 402
Seat belt extender .................................32
Seat belt pretensioners ........................ 31
SRS warning light ............................. 400
R
S
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.