2013 Lexus ES300h Under hood

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ES350 300h_OM_OM33A01U_(U)
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When trouble arises
7-2. Steps to take in an emergency
If your vehicle overheats (gasoline vehicles)
Follow the correction procedure as described below.Stop the vehicle in a safe place and turn off the air conditioning system,
and then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled
down sufficiently, inspect the
hoses and radiator core (radia-
tor) for any leaks.
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” line on the reservoir.
Reservoir cap
“FULL”
“LOW”
The following may indicate that your vehicle is overheating.
●The needle of the engine coolant temperature gauge ( P. 9 3 )
enters the red zone or a loss of engine power is experienced. (For
example, the vehicle speed does not increase.)
●Steam comes out from under the hood.
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8147-2. Steps to take in an emergency
ES350 300h_OM_OM33A01U_(U)
Add coolant if necessary.
Water can be used in an emergency if
coolant is unavailable.
Start the engine and turn the air conditioning system on to check that
the radiator cooling fan operates and to chec k for coolant leaks from
the radiator or hoses.
The fan operates when the air conditioning system is turned on immediately after
a cold start. Confirm that the fan is operating by checking the fan sound and air
flow. If it is difficult to check these, tu rn the air conditioning system on and off
repeatedly.
(The fan may not operate in freezing temperatures.)
If the fan is not operating:
Stop the engine immediately and contact your Lexus dealer.
If the fan is operating:
Have the vehicle inspected at the nearest Lexus dealer.
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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.
●Keep hands and clothing (especially a tie, a scarf or a muffler) away from the fan
and belts. Failure to do so may cause the hands or clothing to be caught, resulting
in serious injury.
●Do not loosen the radiator cap while the engine and radiator are hot.
High temperature steam or coolant could spray out.
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ES350 300h_OM_OM33A01U_(U)
7-2. Steps to take in an emergency
If your vehicle overheats (hybrid vehicles)
■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.
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. 9 3 )
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. 772) is shown on the multi-informa-
tion display.
●Steam comes out from under the hood.
Correction procedures
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8197-2. Steps to take in an emergency
ES350 300h_OM_OM33A01U_(U)
7
When trouble arises
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.
●Check that the indicator on the “POWER ” switch and the “READY” indicator are
off.
●On hybrid vehicles, 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 fan, which may lead to fingers or clothing
(especially a tie, a scarf or a muffler) getting caught, resulting in serious injury.
●Do not loosen the radiator cap while th e hybrid system and radiator are hot.
High temperature steam or coolant could spray out.
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 commercially available coolant additives.

897Alphabetical index
ES350 300h_OM_OM33A01U_(U)
MirrorsInside rear view mirror ..................... 164
Outside rear view mirror defoggers
*........................................ 372
Outside rear view mirrors ...............167
Vanity mirrors ....................................... 614
Moon roof Door lock linked moon roof operation ..................... 175
Jam protection function ................... 175
Operation ................................................173
Warning message ............................. 767
MP3 disc
*..................................... 395, 514
Multi-information display ..................... 98 Dynamic radar cruise control......248
Energy monitor ...................................... 110
Language .............................................. 852
Switching the display...........................99
Trip information .....................................99
Warning message ...............................761
Navigation system
*
Noise from under vehicle ....................... 8 Odometer ...................................................93
Oil
Engine oil ............................................... 829
Opener Hood........................................................669
Trunk .......................................................... 144
Ornament lights ................................... 603
Outer foot lights Outer foot lights .................................603
Wattage .................................................836
Outside rear view mirrors Adjusting and folding ........................ 167
Blind spot monitor .............................. 313
Linked mirror function when reversing................................. 168
Mirror position memory ..................153
Outside rear view mirror defoggers
*.........................372
Outside temperature display ..............99
Overheating.................................. 813, 816
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O
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.