2019 Lexus ES350 check engine

426What to do if... (Troubleshooting)
1-1.What to do if... (Troubleshooting)What to do if... (Troubleshooting)
If you lose your mechanical keys,
new genuine mechanical keys can
be made by your Lexus dealer.
( P.371)
 If you lose your electronic keys, the
risk of vehicle theft increases signifi-
cantly. Contact your Lexus dealer
immediately. ( P.371)
 Is the electronic key battery weak or
depleted? ( P.330)
 Is the engine switch in IGNITION
ON mode?
When locking the doors, turn the engine
switch off. ( P.139)
 Is the electronic key left inside the
vehicle?
When locking the doors, make sure that
you have the electronic key on your per-
son.
The function may not operate prop-
erly due to the condition of the radio
wave. ( P.101) 
Is the child-protector lock set?
The rear door cannot be opened
from inside the vehicle when the
lock is set.
Open the rear door from outside
and then unlock the child-protector
lock. ( P.92)
 The function to prevent the elec-
tronic key from being left inside the
trunk will operate and you can open
the trunk as usual. Take the key out
from the trunk. ( P.97)
 Did you press the engine switch
while firmly depressing the brake
pedal? ( P.137)
 Is the shift lever in P? ( P.141)
 Is the electronic key anywhere
detectable inside the vehicle?
( P.100)
 Is the steering wheel unlocked?
( P.138)
 Is the electronic key battery weak or
depleted?
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
The rear door cannot be opened
The trunk lid is closed with the
electronic key left inside
If you think something is wrong
The engine does not start

427What to do if... (Troubleshooting)427What to do if... (Troubleshooting)
In this case, the engine can be started in a
temporary way. ( P.373)
Is the battery discharged?
( P.374)
 Is the engine switch in IGNITION
ON mode?
If you cannot release the shift lever
by depressing the brake pedal with
the engine switch in IGNITION ON
mode ( P.142)
 It is locked automatically to prevent
theft of the vehicle. ( P.138)
 Is the window lock switch pressed?
The power window at the except for the
one at the driver’s seat cannot be operated
if the window lock switch is pressed.
( P.119)
 The auto power off function will be
operated if the vehicle is left in
ACCESSORY or IGNITION ON
mode (the engine is not running) for
a period of time. ( P.139) 
The seat belt reminder light is flash-
ing
Are the driver and the passengers wearing
the seat belts? ( P.351, 351)
 The parking brake indicator is on
Is the parking brake released? ( P.146)
Depending on the situation, other
types of warning buzzer may also
sound. ( P.348, 358)
 Did anyone inside the vehicle open
a door during setting the alarm?
The sensor detects it and the alarm sounds.
( P.56)
To stop the alarm, turn the engine
switch to IGNITION ON mode, or
start the engine.
 Is the message displayed on the
multi-information display?
Check the message on the multi-informa-
tion display. ( P.358)
 When a warning light turns on or a
warning message is displayed, refer
to P.348, 358.
The shift lever cannot be shifted
from P even if you depress the
brake pedal
The steering wheel cannot be
turned after the engine is
stopped
The windows do not open or
close by operating the power
window switches
The engine switch is turned off
automatically
A warning buzzer sounds during
driving
An alarm is activated and the
horn sounds
A warning buzzer sounds when
leaving the vehicle
A warning light turns on or a
warning message is displayed

432Alphabetical index
Identification number ...............................383
If the engine will not start .......................369
If your vehicle has to be stopped in an
emergency ................................................340
Ignition switch (engine switch) ............. 137
Overheating..................................................377
Tachometer .............................................64, 67
Engine coolant................................................312 Capacity ........................................................ 385
Checking ......................................................... 312
Preparing and checking before winter......................................................................... 240
Engine coolant temperature gauge 64, 67
Engine immobilizer system ........................ 54
Engine oil ......................................................... 310 Capacity .........................................................384
Checking ........................................................ 310
Preparing and checking before winter......................................................................... 240
Warning light ............................................... 349
Engine oil maintenance data ....................312
Engine switch ........................................ 137, 137 Auto power off function ................ 139, 139
Changing the engine switch modes139, 139
If your vehicle has to be stopped in an
emergency ................................... 340, 340
Starting the engine ............................ 137, 137
Enhanced Vehicle Stability Control (Enhanced VSC) ...................................... 236
Enhanced VSC (Enhanced Vehicle Stabil- ity Control) .................................................. 236
EPS (Electric Power Steering) .............. 236 Function .......................................................... 236
Warning light .............................................. 350
Event data recorder (EDR) ............................7
F
Flat tire ............................................................. 362 Tire pressure warning system ...............319
Floor mats ...........................................................22 Fluid
Automatic transmission ......................... 385
Brake ............................................................... 386
Washer ............................................................ 315
Footwell light ................................................. 262
Front passenger occupant classification system ...............................................................37
Front seats ........................................................107 Adjustment ..................................................... 107
Cleaning .........................................................299
Correct driving posture ............................ 23
Driving position memory ........................ 108
Head restraints................................................. 111
Memory recall function............................ 109
Power easy access system .................... 108
Seat heaters ................................................. 258
Seat position memory ..............................108
Seat ventilators ........................................... 258
Front side marker light ............................... 150 Light switch .................................................... 150
Front side marker lights Replacing light bulbs ................... 335, 335
Front turn signal lights .................................145
Replacing light bulbs ................... 335, 335
Turn signal lever .......................................... 145
Fuel ....................................................................... 161 Capacity ........................................................ 383
Fuel gauge ............................................... 64, 67
Fuel pump shut off system..................... 347
Information ................................................... 389
Refueling............................................................ 161
Type ................................................................. 383
Warning light ................................................ 351
Fuel consumption Average fuel economy .............................. 73
Current fuel consumption ........................ 73
Fuel filler door .................................................. 161 If the fuel filler do or cannot be opened
............................................................................371
Refueling............................................................ 161
Fuel gauge ................................................. 64, 67
Fuel pump shut off system........................ 347

440Alphabetical index
W
Warning buzzersABS ................................................................. 350
Airbags ........................................................... 349
Approach warning......................................193
Brake hold.....................................................355
Brake Override System ........................ 350
Brake system ...............................................348
Charging system ....................................... 349
Downshifting ........................................144, 144
Drive-Start Control ................................. 350
Electric power steering ......................... 350
Engine ............................................................. 349
High coolant temperature ....................348
Intuitive parking assist......................211, 352
Low engine oil pressure......................... 349
LTA (Lane Tracing Assist)..........176, 352
Open door.............................................. 90, 92
Open hood...................................................... 92
Open trunk ...................................................... 92
Open window ................................................ 119
PKSA (Parking Support Alert) ...........205
PKSB (Parking Support Brake) .........353
Pre-collision braking..................................169
RCD (Rear Camera Detection) ........ 353
RCTA (Rear Cross Traffic Alert) ...... 353
Seat belt ............................................................351
Warning lights............................................... 348 ABS ................................................................. 350
Brake hold operated indicator ...........355
Brake Override System ........................ 350
Brake system ...............................................348
Charging system ....................................... 349
Drive-Start Control ................................. 350
Electric power steering ......................... 350
High coolant temperature ....................348
Intuitive parking assist OFF indicator352
Low engine oil pressure......................... 349
Low fuel level .................................................351
LTA indicator ............................................... 352
Malfunction indicator lamp................... 349 Master warning light................................ 355
Parking brake indicator ..........................354
PKSB OFF indicator ................................353
Pre-collision system..................................354
RCD OFF indicator..................................353
RCTA OFF indicator ...............................353
Seat belt reminder light............................ 351
Slip indicator .................................................354
SRS ....................................................................349
Tire pressure ................................................352
Warning messages .....................................358
Washer ............................................................. 155 Checking ........................................................ 315
Preparing and checking before winter..........................................................................240
Switch................................................................ 155
Washing and waxing.................................. 296
Weight Cargo capacity ............................................ 135
Load limits ...................................................... 135
Weight.............................................................382
Wheel lock key............................................. 363
Wheels ............................................................. 327
Size ....................................................................387
Window lock switch ...................................... 119
Windows ............................................................ 118 Power windows ............................................. 118
Rear window defogger........................... 252
Washer ............................................................ 155
Windshield wiper de-icer ........................ 255
Windshield wipers ....................................... 155 Position............................................................. 159
Rain-sensing windshield wipers .......... 155
Winter driving tips....................................... 240
Wireless charger ........................................... 271
Wireless remote control ............................. 87 Battery-Saving Function............................ 101
Locking/Unlocking ..................................... 87
Replacing the battery .............................. 330