check engine light Lexus ES350 2017 s Owner's Guide

4858-2. Steps to take in an emergency
ES350_OM_OM33C68U_(U)
8
When trouble arises
■Front passenger detection sensor, seat belt reminder and warning buzzer
●If luggage is placed on the front passenger seat, the front passenger detection sensor
may cause the warning light to flash and the warning buzzer to sound even if a passen-
ger is not sitting in the seat.
●If a cushion is placed on the seat, the sensor may not detect a passenger, and the warn-
ing light may not operate properly.
■Electric power steering system warning light (warning buzzer)
When the battery charge becomes insufficient or the voltage temporarily drops, the
electric power steering system warning light may come on and the warning buzzer may
sound.
■If the malfunction indicator lamp comes on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fuel tank immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after several driving trips.
If the light does not go off even after several trips, contact your Lexus dealer as soon as
possible.
■When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level. Pushing the tire
pressure warning reset switch will not turn off the tire pressure warning light.
■The tire pressure warning light may come on due to natural causes
The tire pressure warning light may come on due to natural causes such as natural air
leaks and tire inflation pressure changes caused by temperature. In this case, adjusting
the tire inflation pressure will turn off the warning light (after a few minutes).
■When a tire is replaced with a spare tire
The compact spare tire is not equipped with a tire pressure warning valve and transmit-
ter. If a tire goes flat, the tire pressure warning light will not turn off even though the flat
tire has been replaced with the spare tire.
■Conditions that the tire pressure warning system may not function properly
→ P. 4 4 6
■If the tire pressure warning light freque ntly comes on after blinking for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1 minute when the
engine switch is turned to IGNITION ON mode, have it checked by your Lexus dealer.
■Warning buzzer
In some cases, the buzzer may not be heard because of noisy place or an audio sound.

4898-2. Steps to take in an emergency
ES350_OM_OM33C68U_(U)
8
When trouble arises
*: A buzzer sounds the first time a message is shown on the multi-information display.
■If “Maintenance Required Soon” is shown (U.S.A. only)
Indicates that all maintenance according to the driven distance on the maintenance
schedule
* should be performed soon.
Comes on approximately 4500 miles (7200 km) after the message has been reset.
If necessary, perform maintenance.
*: Refer to the separate “Scheduled Maintenance” or “Owner’s Manual Supplement” for
the maintenance interval applicable to your vehicle.
■If “Maintenance Required Visit Your Dealer” is shown (U.S.A. only)
Indicates that all maintenance is required to correspond to the driven distance on the
maintenance schedule
*.
Comes on approximately 5000 miles (80 00 km) after the message has been reset.
(The indicator will not work properly unless the message has been reset.)
Perform the necessary maintenance. Please reset the message after the maintenance is
performed ( →P. 4 2 1 )
*: Refer to the separate “Scheduled Maintenance” or “Owner’s Manual Supplement” for
the maintenance interval applicable to your vehicle.
■If “Oil Maintenance Required Soon” is shown
Indicates that the engine oil is scheduled to be changed. (The indicator will not work
properly unless the oil maintenance data has been reset.)
Check the engine oil, and change if necessary. After changing the engine oil, the oil
change system should be reset. ( →P. 4 3 5 )
■If “Oil Maintenance Required Visit Your Dealer” is shown
Indicates that the engine oil should be change d. (After the engine oil is changed and the
oil maintenance data has been reset.)
Check and change the engine oil, and oil filter by your Lexus dealer. After changing the
engine oil, the oil change system should be reset. ( →P. 4 3 5 )
Comes
onDoes not sound
Indicates a condition, such as malfunc-
tion of electrical components, their
condition, or indicates the need for
maintenance
FlashesDoes not sound
Indicates a situation, such as when an
operation has been performed incor-
rectly, or indicates how to perform an
operation correctly
System
warning
lightWarning buzzer*Wa r n i n g

4908-2. Steps to take in an emergency
ES350_OM_OM33C68U_(U)
■If “Power Turned Off to Save Battery” is shown
Power was turned off due to the automatic power off function.
Next time when starting the engine, increase the engine speed slightly and maintain that
level for approximately 5 minutes to recharge the battery.
■If “Forward Camera System Unavailable” or “Forward Camera System Unavailable
Clean Windshield” is displayed. (if equipped)
The following systems may be suspended until the problem shown in the message is
resolved.
●PCS (Pre-Collision System)
●LDA (Lane Departure Alert with steering control)
●Dynamic radar cruise control
●Automatic High Beam
■When a message that indicates the need for the shift lever operation is shown
To prevent the shift lever from being operated incorrectly or the vehicle from moving
unexpectedly, a message that requires shifting the shift lever may be shown on the multi-
information display. In that case, follow the instruction of the message and shift the shift
lever.
■If “Visit Your Dealer” is shown
The system or part shown on the multi-info rmation display is malfunctioning. Have the
vehicle inspected by your Lexus dealer immediately.
■If “See Owner’s Manual” is shown
●If the following message is shown, following the instructions, accordingly.
• “Engine Coolant Temp High” (→ P. 5 1 0 )
●If the following message is shown, there may be a malfunction.
Immediately have the vehicle inspected by your Lexus dealer.
• “Check Access System with Elec. Key”
●If the following messages are shown, there may be a malfunction.
Immediately stop the vehicle in a safe place and contact your Lexus dealer. Continuing
to drive the vehicle may be dangerous.
• “Braking Power Low Stop in a Safe Place”
• “Charging System Malfunction”
• “Oil Pressure Low Stop in a Safe Place”
■Warning buzzer
In some cases, the buzzer may not be heard because of noisy place or an audio sound.

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.

562What to do if... (Troubleshooting)
ES350_OM_OM33C68U_(U)
●The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts? ( →P. 4 8 3 )
●The parking brake indicator is on
Is the parking brake released? ( →P. 1 6 4 )
Depending on the situation, other type s of warning buzzer may also sound.
( → P. 482, 488)
●Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds. ( →P. 6 7 )
To stop the alarm, turn the engine switch to IGNITION ON mode or start the
engine.
●Is the electronic key left inside th e vehicle or the moon roof opened?
Check the message on the multi-information display. ( →P. 4 8 8 )
●When a warning light turns on or a warning message is displayed, refer to
P. 482, 488.
●Stop the vehicle in a safe place and replace the flat tire with the spare tire.
(→ P. 4 9 1 )
●Try the procedure for when the vehicle becomes stuck in mud, dirt, or snow.
(→ P. 5 1 3 )
A warning buzzer sounds during driving
An alarm is activate
d and the horn sounds
A warning buzzer sounds wh en leaving the vehicle
A warning light turns on or a warning message is displayed
When a problem has occurred
If you have a flat tire
The vehicle becomes stuck

568Alphabetical index
ES350_OM_OM33C68U_(U)
EngineAccessory mode................................. 155
Compartment ....................................... 431
Engine switch ........................................ 154
Hood ........................................................ 429
How to start the engine ................... 154
Identification number ........................ 517
If the engine will not start............... 502
Ignition switch (engine switch)..... 154
Overheating .......................................... 510
Engine compartment cover ............. 432
Engine coolant Capacity ................................................ 520
Checking................................................436
Preparing and checking before winter ....................................263
Engine coolant temperature gauge .........................................................76
Engine immobilizer system ................. 65
Engine oil Capacity .................................................. 518
Checking................................................433
Preparing and checking before winter ....................................263
Enhanced VSC ..................................... 258
EPS (Electronic Power Steering)Function ..................................................259
Warning light ...................................... 483
Event data recorder (EDR) ...................10 Flat tire ........................................................ 491
Floor mats....................................................26
Fluid
Automatic transmission ....................521
Brake.......................................................... 521
Washer ..................................................... 441
Fog lights
Switch ........................................................ 172
Footwell light...........................................379
Front passenger occupant classification system ............................44
Front personal lights ........................... 380
Front seats Adjustment............................................... 116
Cleaning................................................... 417
Correct driving posture .................... 28
Driving position memory................... 117
Head restraints .......................................121
Power easy access system ............... 117
Seat heaters .......................................... 378
Seat position memory .........................117
Seat ventilators.................................... 378
Front side marker lights
Light switch.............................................165
Replacing light bulbs ....................... 467
Wattage ................................................. 524
Front turn signal lights
Replacing light bulbs ....................... 465
Turn signal lever ...................................163
Wattage ................................................. 524F