Page 513 of 612

511
ES300h_OM_OM33C75U_(U)8-2. Steps to take in an emergency
8
When trouble arises
If a warning message is displayed
Master warning light
The master warning light also comes on
or flashes in order to indicate that a mes-
sage is currently being displayed on the
multi-information display.
Multi-information display
If any of the warning messages are shown again after the following actions have
been performed, contact your Lexus dealer.
The warning lights and warning buzzers operate as follows depending on the
content of the message. If a message indicates the need for inspection by a
dealer, have the vehicle inspected by your Lexus dealer immediately.
The multi-information display shows warnings of system malfunctions, incor-
rectly performed operations, and messages that indicate a need for mainte-
nance. When a message is shown, perform the correction procedure
appropriate to the message.
1
2
Messages and warnings
System
warning light
Warning buzzer*Wa r n i n g
Comes on
Sounds Indicates an important situation, such
as when a system related to driving is
malfunctioning or that danger may
result if the correction procedure is not
performed
Comes on
or flashesSounds
Indicates an important situation, such
as when the systems shown on the
multi-information display may be mal-
functioning
FlashesSounds
Indicates a situation, such as when
damage to the vehicle or danger may
result
Page 527 of 612

525
ES300h_OM_OM33C75U_(U)8-2. Steps to take in an emergency
8
When trouble arises
If the hybrid system will not start
One of the following may be the cause of the problem:
●The electronic key may not be functioning properly. (
→P. 5 2 8 )
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●There may be a malfunction in the immobilizer system. ( →P. 76 )
●There may be a malfunction in the steering lock system.
●The hybrid system may be malfunctioning due to an electrical problem such
as electronic key battery depletion or a blown fuse. However, depending on
the type of malfunction, an interim measure is available to start the hybrid sys-
tem. ( →P. 5 2 6 )
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( →P. 5 2 9 )
●The 12-volt battery terminal connec tions may be loose or corroded.
( → P. 4 6 1 )
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( →P. 5 2 9 )
●One or both of the 12-volt battery terminals may be disconnected. ( →P. 4 6 1 )
Contact your Lexus dealer if the problem cannot be repaired, or if repair procedures
are unknown.
Reasons for the hybrid system not starting vary depending on the situation.
Check the following and perform the appropriate procedure:
The hybrid system will not start ev en though the correct starting proce-
dure is being followed. ( →P. 1 6 8 )
The interior lights and headlights are dim, or the horn does not sound or
sounds at a low volume.
The interior lights and headlights do not turn on, or the horn does not
sound.
Page 533 of 612

5318-2. Steps to take in an emergency
ES300h_OM_OM33C75U_(U)
8
When trouble arises
■Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting.
■To prevent 12-volt battery discharge
●Turn off the headlights and the audio syst em while the hybrid system is stopped.
●Turn off any unnecessary electrical components when the vehicle is running at a low
speed for an extended period, such as in heavy traffic.
■Charging the 12-volt battery
The electricity stored in the 12-volt battery will discharge gradually even when the vehicle
is not in use, due to natural discharge and the draining effects of certain electrical appli-
ances. If the vehicle is left for a long time, the 12-volt battery may discharge, and the
hybrid system may be unable to start. (The 12-volt battery recharges automatically while
the hybrid system is operating.)
■When recharging or replacing the 12-volt battery
●In some cases, it may not be possible to unlock the doors using the smart access system
with push-button start when the 12-volt battery is discharged. Use the wireless remote
control or the mechanical key to lock or unlock the doors.
●The hybrid system may not start on the first attempt after the 12-volt battery has
recharged but will start normally after the second attempt. This is not a malfunction.
●The power switch mode is memorized by the vehicle. When the 12-volt battery is
reconnected, the system will return to the mode it was in before the 12-volt battery was
discharged. Before disconnecting the 12-volt battery, turn the power switch off.
If you are unsure what mode the power switch was in before the 12-volt battery dis-
charged, be especially careful when reconnecting the 12-volt battery.
Page 547 of 612
ES300h_OM_OM33C75U_(U)
5459-1. Specifications
9
Vehicle specifications
Cooling system
Capacity
Gasoline
engine7.6 qt. (7.2 L, 6.3 Imp.qt.)
Pow e r
control unit3.4 qt. (3.2 L, 2.8 Imp.qt.)
Coolant type
Use either of the following:
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based non-sili-cate, non-amine, non-nitrite, and non-borate cool-
ant with long-life hybrid organic acid technology
Do not use plain water alone.
Ignition system
Spark plug
MakeDENSO FK16HR-A8
Gap0.031 in. (0.8 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
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.
Page 550 of 612
548
ES300h_OM_OM33C75U_(U)9-1. Spec
ifications
A: H9 halogen bulbs B: Wedge base bulbs (amber)
C: Wedge base bulbs (clear)
Light bulbs
Light bulbsBulb No.WTy p e
Exterior
Headlights high beam
(halogen bulbs)
65A
Front turn signal lights7444NA28 /8B
Front side marker lightsW5W5C
Rear turn signal lightsWY21W21B
Back-up lightsW16W16C
Outer foot lightsW5W5C
Interior
Door courtesy lights5C
Vanity lights8C
Trunk light5C
Page 572 of 612
570
ES300h_OM_OM33C75U_(U)9-2. Customization
■Automatic light control system (
→P. 1 8 2 )
■Lights ( →P. 1 8 2 )
*:Except for Canada
■Intuitive parking assist (if equipped) ( →P. 2 4 1 )
■Automatic air conditioning system ( →P. 3 8 8 )
FunctionDefault settingCustomized
setting
Adjust the sensitivity of the
ambient light sensor0-2 to 2O—O
Adjust the time
elapsed before the headlights
automatically turn off
30 seconds
Off
O—O60 seconds
90 seconds
Welcome light illumination
controlOnOff——O
123
FunctionDefault settingCustomized setting
Daytime running lights can be
disabled*OnOffO—O
123
FunctionDefault settingCustomized setting
Detection distance of the
front/rear center sensorFarNearO—O
Alert volume can be adjusted31 to 5O—O
Display setting
(when intuitive parking assist
is operating)All sensors displayedDisplay offO—O
123
FunctionDefault settingCustomized
setting
A/C Auto switch operationOnOffO—O
Exhaust gas sensor sensitivity0-3 to 3O—O
123
Page 573 of 612
ES300h_OM_OM33C75U_(U)
5719-2. Customization
9
Vehicle specifications
■Illumination (→P. 4 0 0 )
*: If equipped
FunctionDefault settingCustomized
setting
Interior lights illumination
controlOnOff——O
Ti m e e l a p s e d b e f o r e t h e i n t e -
rior lights turn off15 seconds
Off
O—O7. 5 s e c o n d s
30 seconds
Operation after the power
switch is turned offOnOff——O
Operation when the doors
are unlockedOnOff——O
Operation when you
approach the vehicle with the
electronic key on your personOnOff——O
Footwell lightingOnOff——O
Outer foot lightsOnOff——O
Time elapsed before the outer
foot lights turn off15 seconds
Off
O—O7. 5 s e c o n d s
30 seconds
Enable/disable operation of
the ornament lights (“Ambi-
ent Illumin.”)
*OnOff—OO
Enable/disable operation of
the outer foot lights when you
approach the vehicle with the
electronic key on your person
OnOff——O
Enable/disable operation of
the outer foot lights when the
doors are unlocked with the
power door lock switch
OnOff——O
123
Page 593 of 612

591Alphabetical index
ES300h_OM_OM33C75U_(U)
Audio system*....................................... 290
Audio input............................................299
AUX port ...............................................299
Bluetooth
® audio ............................. 348
CD player .............................................. 322
iPod ...........................................................329
MP3/WMA disc ............................... 322
Optimal use ......................................... 309
Portable music player ...................... 337
Radio ......................................................... 316
Setup menu .......................................... 302
Steering wheel audio switches ...............................................296
USB memory .......................................333
Automatic air conditioning system ....................................................388
Automatic headlight leveling system ..................................................... 184
Automatic High Beam ........................ 185
Automatic light control system ..................................................... 182
AUX port
*.............................................. 299
Auxiliary box .......................................... 406 Back-up lights
Replacing light bulbs ....................... 494
Wattage .................................................548
Battery (12-volt battery) ...................... 461 If the 12-volt battery
is discharged .................................... 529
Preparing and checking before
winter.................................................... 284
Battery (traction battery) ....................... 71
Bluetooth
®*
Audio system .......................................338
Hands-free system (for cellular phone) ....................... 349
Brake Fluid .......................................................... 459
Parking brake ......................................... 181
Warning light ...................................... 505
Brake assist .............................................. 276
Break-in tips ............................................. 156
Brightness control Instrument panel light control ........ 87
BSM (Blind Spot Monitor) ............... 268
B
*: For vehicles with navigation system, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”.