2020 Lexus ES350 warning lights

3396-3. Do-it-yourself maintenance
6
Maintenance and care
Normal fuse
Blown fuse
Type BNormal fuse
Blown fuse
Type CNormal fuse
Blown fuse
■After a fuse is replaced
●When installing the lid, make sure that the
tab is installed securely.
●If the lights do not turn on even after the
fuse has been replaced, a bulb may need
replacement. ( P.341)
●If the replaced fuse blows again, have the
vehicle inspected by your Lexus dealer.
■If there is an overload in a circuit
The fuses are designed to blow, protecting
the wiring harness from damage.
■When replacing light bulbs
Lexus recommends that you use genuine
Lexus products designed for this vehicle.
Because certain bulbs are connected to cir-
cuits designed to prevent overload, non-
genuine parts or parts not designed for this
vehicle may be unusable.A
B
A
B
A
B
WARNING
■To prevent system breakdowns and
vehicle fire
Observe the following precautions.
Failure to do so may cause damage to
the vehicle, and possibly a fire or injury.
●Never use a fuse of a higher amperage
rating than that indicated, or use any
other object in place of a fuse.
●Always use a genuine Lexus fuse or
equivalent.
Never replace a fuse with a wire, even
as a temporary fix.
●Do not modify the fuses or fuse boxes.
NOTICE
■Before replacing fuses
Have the cause of electrical overload
determined and repaired by your Lexus
dealer as soon as possible.

3547-2. Steps to take in an emergency
■Brake system warning light (warning buzzer)
■Brake system warning light (warning buzzer)
■High coolant temperature warning light* (warning buzzer)
*: This light illuminates on the multi-information display.
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, bu t 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.
Actions to the warning lights or warning buzzers
Warning lightDetails/Actions
(U.S.A.)
or
(red)
(Canada)
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.
Warning lightDetails/Actions
(yellow)
Indicates a malfunction in:
 The electronically controlled brake system (if equipped); or
 The parking brake system
 Have the vehicle inspected by your Lexus dealer immediately.
Warning lightDetails/Actions
Indicates that the engine coolant temperature is too high
Immediately stop the vehicle in a safe place.
Handling method ( P.383)

3577-2. Steps to take in an emergency
7
When trouble arises
■Low fuel level warning light
■Driver’s and front passenger’s seat belt reminder light (warning buzzer)*
*: Driver’s seat belt warning buzzer:
The driver’s seat belt warning buzzer sounds to al ert the driver that his or her seat belt is not
fastened. Once the engine switch is turned to IGNITION ON, the buzzer sounds. If the
seat belt is still unfastened, the buzzer sounds intermittently for a certain period of time
after the vehicle reaches a certain speed.
Front passenger’s seat belt warning buzzer:
The front passenger’s seat belt warning buzzer sounds to alert the front passenger that his
or her seat belt is not fastened. If the seat belt is unfastened, the buzzer sounds intermit-
tently for a certain period of time af ter the vehicle reaches a certain speed.
■Rear passengers’ seat belt reminder lights (warning buzzer)*
*: Rear passengers’ seat belt warning buzzer:
The rear passengers’ seat belt warning buzzer sounds to al ert the rear passenger that his or
her seat belt is not fastened. If the seat belt is unfastened, the buzzer sounds intermittently
for a certain period of time af ter the seat belt is fastened and unfastened and the vehicle
reaches a certain speed.
Warning lightDetails/Actions
Indicates that remaining fu el is approximately 2.4 gal. (9 L, 2.0 Imp.gal.)
or less
 Refuel the vehicle.
Warning lightDetails/Actions
Warns the driver and/or front passe nger to fasten their seat belts
 Fasten the seat belt.
If the front passenger’s seat is occupied, the front passenger’s seat
belt also needs to be fastened to make the warning light (warning
buzzer) turn off.
Warning lightDetails/Actions
Warns the rear passengers to fasten their seat belts
 Fasten the seat belt.

3627-2. Steps to take in an emergency
leaks and tire inflation pressure changes
caused by temperature. In this case, adjust-
ing 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 warn-
ing light will not turn off even though the flat
tire has been replaced with the spare tire.
Replace the spare tire with the repaired tire
and adjust the tire inflation pressure. The
tire pressure warning lig ht will go off after a
few minutes.
■Conditions that the tire pressure warn-
ing system may not function properly
 P.325
WARNING
■If both the ABS and the brake system
warning lights remain on
Stop your vehicle in a safe place immedi-
ately and contact your Lexus dealer.
The vehicle 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
When the light comes on yellow, the
assist to the power steering is restricted.
When the light comes on red, the assist
to the power steering is lost and handling
operations of the steering wheel become
extremely heavy.
When steering wheel operations are
heavier than usual, grip the steering
wheel firmly and operate it using more
force than usual.
■If the tire pressure warning light
comes on
Be sure to observe the following precau-
tions.
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. Check and adjust the
tire inflation pre ssure immediately.
●If the tire pressure warning light comes
on even after tire inflation pressure
adjustment, it is prob able that you have
a flat tire. Check the tire s. 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 brak-
ing.
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.
■Maintenance of the tires
Each tire, including the spare (if pro-
vided), should be checked monthly when
cold and inflated to the inflation pressure
recommended by the vehicle manufac-
turer on the vehicle placard or tire infla-
tion pressure label (tire and load
information label). (If your vehicle has
tires of a different size than the size indi-
cated on the vehicle placard or tire infla-
tion pressure label [tire and load
information label], you should determine
the proper tire inflation pressure for
those tires.)

3757-2. Steps to take in an emergency
7
When trouble arises
One of the following may be the cause
of the problem:
The electronic key may not be func-
tioning properly. ( P.379)
 There may not be sufficient fuel in
the vehicle’s tank.
Refuel the vehicle. ( P.167)
 The engine may be flooded.
Try to restart the engine again fol-
lowing correct starting procedures.
( P.143)
 There may be a malfunction in the
engine immobilizer system.
( P.60)
 There may be a malfunction in the
steering lock system.
One of the following may be the cause
of the problem:
 The battery may be discharged.
WARNING
■Speed limit when using the compact
spare tire
Do not drive at speeds in excess of 50
mph (80 km/h) when a compact spare
tire is installed on the vehicle.
The compact spare tire is not designed
for driving at high speeds. Failure to
observe this precaution may lead to an
accident causing deat h or serious injury.
■After using the tools and jack
Before driving, make sure all the tools
and jack are securely in place in their
storage location to reduce the possibility
of personal injury during a collision or
sudden braking.
NOTICE
■Be careful when driving over bumps
with the compact spare tire installed
on the vehicle
The vehicle becomes lower when driving
with the compact spare tire compared to
when driving with standard tires. Be
careful when driving over uneven road
surfaces.
■Driving with tire chains and the com-
pact spare tire
Do not fit tire chains to the compact
spare tire.
Tire chains may damage the vehicle body
and adversely affect driving perfor-
mance.
■When replacing the tires
When removing or fitting the wheels,
tires or the tire pressure warning valve
and transmitter, contact your Lexus
dealer as the tire pr essure warning valve
and transmitter may be damaged if not
handled correctly.
If the engine will not start
If the engine will not start even
though correct starting procedures
are being followed ( P.143), con-
sider each of the following points:
The engine will not start even
though the starter motor oper-
ates normally.
The starter motor turns over
slowly, the interior lights and
headlights are dim, or the horn
does not sound or sounds at a low
volume.

435Alphabetical index
Alphabetical index
A
A/C ..................................................................... 261Air conditioning filter ............................... 335
Automatic air conditioning system ..... 261
ABS (Anti-lock Brake System).............. 245 Function .......................................................... 245
Warning light ...............................................356
ACA (Active Cornering Assist) ........... 245
Active Cornering Assist (ACA) ........... 245
Adaptive Front-lighting System (AFS) 158
Adaptive Variable Suspension System245
AFS (Adaptive Front-lighting System) 158
Airbags ............................................................... 28 Airbag operating conditions................... 30
Airbag precautions for your child ........ 33
Correct driving posture .............................23
Curtain shield airbag operating condi-tions .................................................................... 31
Curtain shield airbag precautions ....... 33
Front passenger occupant classification system ..............................................................37
General airbag precautions ................... 33
Locations of airbags.................................... 28
Modification and disposal of airbags . 35
Side airbag operating conditions ........... 31
Side airbag precautions ............................ 33
Side and curtain shield airbags operating conditions........................................................ 31
Side and curtain shield airbags precau- tions .................................................................. 33
SRS airbags ..................................................... 28
SRS warning light ......................................355
Air conditioning filter ................................. 335
Air conditioning system .............................. 261 Air conditioning filter ............................... 335
Automatic air conditioning system ..... 261
Alarm ................................................................... 62 Alarm .................................................................. 62
Warning buzzer ......................................... 354
Anchor brackets ...................................... 43, 51 Antennas (smart access
system with push-
button start) ................................................. 106
Anti-lock Brake System (ABS).............. 245 Function ..........................................................245
Warning light .............................................. 356
Approach warning........................................199
Armrest............................................................288
Assist grips .....................................................288
Audio system-linked display ........................81
Automatic headlight leveling system .... 157
Automatic High Beam ................................159
Automatic light control system................156
Automatic transmission .............................. 147 Paddle shift switches ...................... 150, 150
S mode ............................................................. 150
Auxiliary box...................................................277
Average fuel economy..................................79
Average vehicle speed .................................79
B
Back-up lights Replacing light bulbs ..................................341
Battery Checking .......................................................320
If the battery is discharged ................... 380
Preparing and checking before winter.......................................................................... 249
Warning light .............................................. 355
Blind Spot Monitor (BSM)....................... 203
Boost gauge...................................................... 80
Brake Brake hold ...................................................... 154
Fluid...................................................................392
Parking brake ............................................... 152
Warning light ...............................................354
Brake assist .................................................... 245
Break-in tips.....................................................135
Brightness control Instrument panel light control......... 72, 76
BSM (Blind Spot Monitor)....................... 203

Alphabetical index437
Warning message..................................... 364
Distance until next engine oil change71, 76
Do-it-yourself maintenance ....................308
Door courtesy lights ....................................272
Door lock Doors .................................................................. 95
Smart access system with push-button start ................................................................. 106
Wireless remote control........................... 93
Doors ................................................................... 95 Automatic door lock ing and unlocking
system ............................................................. 98
Door glasses .................................................. 124
Door lock.......................................................... 95
Open door warning buzzer .......... 96, 98
Outside rear view mirrors ........................121
Rear door child-protectors ..................... 98
Drive distance ...................................................79
Drive info 1/Drive info 2 ...............................79
Driver’s seat position memory .................. 114 Driving position memory ...........................114
Memory recall function ............................. 115
Drive-start control ........................................135
Driving................................................................134 Break-in tips ...................................................135
Correct driving posture .............................23
Driving Mode Select switch .................209
Procedures ..................................................... 134
Winter drive tips......................................... 249
Driving information display .........................79
Driving Mode Select switch.................... 209
Driving range ....................................................79
Driving support system information display ............................................................................. 82
Dynamic radar cruise control with full- speed range..................................................193Warning message.......................................201
E
Eco drive mode ............................................ 209
Eco Driving Indicator.................... 80, 81, 87
Eco Driving Indicator Light ........................ 80 EDR (Event data recorder) ............................7
Elapsed time ......................................................79
Electric Power Steering (EPS)
Function ..........................................................245
Warning light .............................................. 356
Electronic key .................................................. 92 Battery-saving function............................ 107
If the electronic key does not operate properly .......................................................378
Replacing the battery ...............................336
Electronic roof sunshade Jam protection function ........................... 130
Operation ........................................................129
Emergency, in case of If a warning buzzer sounds...................354
If a warning light turns on.......................354
If a warning message is displayed .....364
If the battery is discharged ................... 380
If the electronic key does not operate properly .......................................................378
If the engine will not start........................375
If the fuel filler do or cannot be opened
.......................................................................... 377
If the vehicle is trapped in rising water .......................................................................... 347
If you have a flat tire ................................. 368
If you lose your keys ................................. 377
If you think something is wrong..........352
If your vehicle becomes stuck ............ 385
If your vehicle has to be stopped in an emergency .................................................346
If your vehicle needs to be towed .....349
If your vehicle overheats ....................... 383
Emergency flashers .................................... 346
Engine ................................................................143 ACCESSORY mode............................... 146
Compartment............................................... 316
Engine switch .................................................143
Fuel pump shut off system.....................353
Hood ..................................................................314
How to start the engine ............................143
Identification number .............................. 389

438Alphabetical index
If the engine will not start ....................... 375
If your vehicle has to be stopped in an
emergency ................................................ 346
Ignition switch (engine switch) ............. 143
Overheating.................................................383
Tachometer .............................................70, 73
Engine coolant............................................... 318 Capacity ...........................................................391
Checking ........................................................ 318
Preparing and checking before winter......................................................................... 249
Engine coolant temperature gauge 70, 73
Engine immobilizer system ........................ 60
Engine oil ..........................................................316 Capacity .........................................................390
Checking .........................................................316
Preparing and checking before winter......................................................................... 249
Warning light ...............................................355
Engine oil maintenance data ................... 318
Engine switch ........................................143, 143 Auto power off function ................ 146, 146
Changing the engine switch
modes ................................................. 146, 146
If your vehicle has to be stopped in an
emergency ....................................346, 346
Starting the engine ........................... 143, 143
Enhanced Vehicle Stability Control (Enhanced VSC) ...................................... 245
Enhanced VSC (Enhanced Vehicle Stabil- ity Control) .................................................. 245
EPS (Electric Power Steering) .............. 245 Function .......................................................... 245
Warning light ...............................................356
Event data recorder (EDR) ............................7
F
Flat tire ............................................................. 368 Tire pressure warning system ............. 325
Floor mats ...........................................................22
Fluid Automatic transmission ............................391 Brake ................................................................392
Washer .............................................................321
Footwell light ..................................................272
Front passenger occupant classification system ...............................................................37
Front seats ......................................................... 113 Adjustment ....................................................... 113
Cleaning ........................................................ 305
Correct driving posture ............................ 23
Driving position memory .......................... 114
Head restraints............................................... 117
Memory recall function.............................. 115
Power easy access system ...................... 114
Seat heaters ................................................. 268
Seat position memory ................................ 114
Seat ventilators ........................................... 268
Front side marker light ................................156 Light switch .................................................... 156
Front side marker lights Replacing light bulbs ......................341, 342
Front turn signal lights .................................. 151 Replacing light bulbs ......................341, 342
Turn signal lever ............................................ 151
Fuel ...................................................................... 167 Capacity ........................................................ 389
Fuel gauge ............................................... 70, 73
Fuel pump shut off system.....................353
Information ................................................... 395
Refueling...........................................................167
Type ................................................................. 389
Warning light ...............................................357
Fuel consumption Average fuel economy .............................. 79
Current fuel consumption ........................ 79
Fuel filler door ................................................. 167 If the fuel filler do or cannot be opened
.......................................................................... 377
Refueling...........................................................167
Fuel gauge ................................................. 70, 73
Fuel pump shut off system........................ 353
Fuses ................................................................. 338