lights Lexus ES350 2017 s Repair Manual

474
ES350_OM_OM33C68U_(U)8-1. Essential information
Emergency flashers
Press the switch.
All the turn signal lights will flash.
To turn them off, press the switch once
again.
■Emergency flashers
If the emergency flashers are used for a long time while the engine is not operating, the
battery may discharge.
The emergency flashers are used to warn other drivers when the vehicle has
to be stopped in the road due to a breakdown, etc.

482
ES350_OM_OM33C68U_(U)8-2. Steps to take in an emergency
If a warning light turns
on or a warning buzzer
sounds
Calmly perform the following actions if any of the warning lights comes on or
flashes. If a light comes on or flashes, but then goes off, this does not necessar-
ily indicate a malfunction in the system. However, if this continues to occur,
have the vehicle inspected by your Lexus dealer.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
(U.S.A.)
(Canada)
Brake system warning light (warning buzzer) Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
→ Immediately stop the vehicle in a safe place and contact your
Lexus dealer. Continuing to drive the vehicle may be dangerous.
(U.S.A.)
(Canada)
Malfunction indicator lamp Indicates a malfunction in:
• The electronic engine control system;
• The electronic throttle control system; or
• The electronic automatic transmission control system
→ Have the vehicle inspected by your Lexus dealer immediately.
SRS warning light
Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pr etensioner system
→ Have the vehicle inspected by your Lexus dealer immediately.
(U.S.A.)
(Canada)
ABS warning light Indicates a malfunction in:
•The ABS; or
• The brake assist system
→ Have the vehicle inspected by your Lexus dealer immediately.

4868-2. Steps to take in an emergency
ES350_OM_OM33C68U_(U)
WA R N I N G
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact your Lexus dealer. The vehi-
cle will become extremely unstable during braking, and the ABS system may fail, which
could cause an accident resulting in death or serious injury.
■When the electric power steering system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, hold firmly and oper-
ate using more force than usual.
■If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause a loss of
vehicle control and result in death or serious injury.
●Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pressure
immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire. Check the tires. If a tire is flat, change it
with the spare tire and have the flat tire repaired by the nearest Lexus dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could lose
control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.

488
ES350_OM_OM33C68U_(U)8-2. Steps to take in an emergency
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
FlashesSounds
Indicates a situation, such as when
damage to the vehicle or danger may
result

502
ES350_OM_OM33C68U_(U)8-2. Steps to take in an emergency
If the engine will not start
One of the following may be the cause of the problem:
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●The engine may be flooded.
Try to restart the engine again following correct starting procedures.
(
→ P. 1 5 4 )
●There may be a malfunction in the engine immobilizer system. ( →P. 6 5 )
One of the following may be the cause of the problem:
●The battery may be discharged. ( →P. 5 0 6 )
●The battery terminal connections may be loose or corroded.
The engine starting system may be malfunctioning due to an electrical problem
such as electronic key battery depletion or a blown fuse. However, an interim
measure is available to start the engine. ( →P. 5 0 3 )
One of the following may be the cause of the problem:
●One or both of the battery terminals may be disconnected.
●The battery may be discharged. ( →P. 5 0 6 )
●There may be a malfunction in the steering lock system.
Contact your Lexus dealer if the problem cannot be repaired, or if repair procedures
are unknown.
If the engine will not start even though correct starting procedures are being
followed ( →P. 154), consider each of the following points:
The engine will not start even though the starter motor operates nor-
mally.
The starter motor turns over slowly , the interior lights and headlights
are dim, or the horn does not so und or sounds at a low volume.
The starter motor does not turn over
The starter motor does not turn over , the interior lights and headlights
do not turn on, or the horn does not sound.

5088-2. Steps to take in an emergency
ES350_OM_OM33C68U_(U)
■Starting the engine when the battery is discharged
The engine cannot be started by push-starting.
■To prevent battery discharge
●Turn off the headlights and the audio system while the engine 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 battery
The electricity stored in the battery will discharge gradually even when the vehicle is not
in use, due to natural discharge and the draining effects of certain electrical appliances. If
the vehicle is left for a long time, the battery may discharge, and the engine may be
unable to start. (The battery recharges automatically during driving.)
■When recharging or replacing the battery
●In some cases, it may not be possible to unlock the doors using the smart access system
with push-button start when the battery is discharged. Use the wireless remote control
or the mechanical key to lock or unlock the doors.
●The engine may not start on the first attempt after the battery has recharged but will
start normally after the second attempt. This is not a malfunction.
●The engine switch mode is memorized by the vehicle. When the battery is recon-
nected, the system will return to the mode it was in before the battery was discharged.
Before disconnecting the battery, turn the engine switch off.
If you are unsure what mode the engine switch was in before the battery discharged, be
especially careful when reconnecting the battery.

520
ES350_OM_OM33C68U_(U)9-1. Spec
ifications
Cooling system
Capacity 9.7 qt. (9.2 L, 8.1 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 FK20HR11
Gap0.043 in. (1.1 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Electrical system
Battery
Open voltage at 68 °F
(20 °C):12.3 V or higher
(Voltage is checked 20 minutes after the engine and all
lights are turned off.)
Charging rates5 A max.

524
ES350_OM_OM33C68U_(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 lights5C
Vanity lights8C
Trunk light5C

ES350_OM_OM33C68U_(U)
5459-2. Customization
9
Vehicle specifications
■Automatic light control system (→P. 1 6 5 )
■Lights (→P. 1 6 5 )
*:Except for Canada
■Intuitive parking assist (if equipped) ( →P. 223)
■Automatic air conditioning system ( →P. 3 6 8 )
FunctionDefault settingCustomized
setting
Adjust the sensitivity of the
ambient light sensor0-2 to 2O—O
Adjust the time elapsed
before the headlights auto-
matically 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

546
ES350_OM_OM33C68U_(U)9-2. Customization
■Illumination (
→P. 3 7 9 )
*: 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 engine
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