Page 828 of 917

8277-2. Steps to take in an emergency
ES350_300h_OM_OM33A60U_(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.
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.
●Do not loosen the radiator cap or the coolant reservoir cap while the hybrid sys-
tem and radiator are hot. High temper ature 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 any coolant additives.
6
Page 838 of 917
ES350_300h_OM_OM33A60U_(U)
8378-1. Specifications
8
Vehicle specifications
*: The engine oil capacity is a reference quantity to be used when changing the
engine oil. Warm up and turn off the engine (Gasoline vehicles) or hybrid system
(Hybrid vehicles), wait more than 5 minu tes, and check the oil level on the dip-
stick.
Lubrication system
Oil capacity
(Drain and refill reference
*)
With filterGasoline vehicles
6.4 qt. (6.1 L, 5.4 Imp.qt.)
Hybrid vehicles
4.6 qt. (4.4 L, 3.9 Imp.qt.)
Without filterGasoline vehicles
6.0 qt. (5.7 L, 5.0 Imp.qt.)
Hybrid vehicles
4.2 qt. (4.0 L, 3.5 Imp.qt.)
Page 893 of 917

892What to do if... (Troubleshooting)
ES350_300h_OM_OM33A60U_(U)
What to do if... (Troubleshooting)
●If you lose your mechanical keys, new genuine mechanical keys
can be made by your Lexus dealer. ( P. 123)
●If you lose your electronic keys, the risk of vehicle theft
increases significantly. Contact your Lexus dealer immediately.
( P. 1 2 4 )
●Is the electronic key battery weak or depleted? ( P. 7 1 9 )
●Is the “START STOP ENGINE” <“POWER”> switch in
IGNITION ON mode?
When locking the doors, turn the “START STOP ENGINE”
<“POWER”> switch off. ( P. 202, 209)
●Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the elec-
tronic key on your person.
●The function may not operate pr operly due to the condition of
the radio wave. ( P. 1 3 2 )
If you have a problem, check the following before contacting your
Lexus dealer.
The doors cannot be locked, unlocked, opened or closed
You lose your keys
The doors cannot be locked or unlocked
Page 897 of 917
896What to do if... (Troubleshooting)
ES350_300h_OM_OM33A60U_(U)●
The seat belt remind
er light is flashing
Are the driver and the front passenger wearing the seat belts?
( P. 76 2 )
●The parking brake indicator is on
Is the parking brake released? ( P. 2 2 6 )
Depending on the situation, ot her types of warning buzzer may
also sound. ( P. 759, 769)
●Did anyone inside the vehicle op en a door during setting the
alarm?
The sensor detects it and the alarm sounds. ( P. 8 6 )
To stop the alarm, turn the “START STOP ENGINE” <“POWER”>
switch to IGNITION ON mo de or start the engine
system>.
●Is the electronic key left insid e the vehicle or the moon roof
opened?
Check the message on the multi-information display.
( P. 76 9 )
A warning buzzer sounds during driving
An alarm is activated and the horn sounds
A warning buzzer sounds when leaving the vehicle
Page 903 of 917

902Alphabetical index
ES350_300h_OM_OM33A60U_(U)
Emergency, in case ofIf a warning buzzer sounds..................................................759
If a warning light turns on...............759
If a warning message is displayed ........................................769
If the 12-volt battery is discharged ................................813, 817
If the electronic key does not operate properly .........810
If the engine will not start............... 805
If the hybrid system will not start ............................................... 807
If the shift lever cannot be shifted from P ........... 809
If you have a flat tire .......................... 792
If you think something is wrong............................................... 757
If your vehicle becomes stuck ..................................................... 828
If your vehicle has to be stopped in an emergency .......... 749
If your vehicle needs to be towed ........................................ 751
If your vehicle overheats ..... 821, 824
Emergency flashers ............................. 748
Energy monitor ........................................ 112 Engine
Accessory mode ............................... 202
Compartment ...................................... 681
Engine switch ........................... 201, 208
Hood........................................................ 677
How to start the engine....................201
How to start the hybrid system ..................................................208
Identification number.......................834
If the engine will not start .............. 805
Ignition switch (“POWER” switch)..................................................208
Ignition switch (“START STOP ENGINE” switch) ...........................201
Overheating.............................. 821, 824
“Power” switch. ...................................208
“START STOP ENGINE” switch .....................................................201
Engine compartment cover............. 683
Engine coolant Capacity.................................................839
Checking .............................................. 689
Preparing and checking before winter ....................................330
Engine coolant temperature gauge ........................................................ 95
Engine immobilizer system ................. 82
Engine oil Capacity................................................. 837
Checking ...............................................684
Oil level warning message ............ 777
Oil pressure warning message........................... 770
Preparing and checking before winter ....................................330