2020 Lexus ES300h fuses

4TABLE OF CONTENTS
Emission inspection and mainte-nance (I/M) programs ............. 316
6-3. Do-it-yourself maintenance Do-it-yourself service precautions............................................................ 317
Hood................................................... 319
Positioning a floor jack................ 319
Engine compartment................... 321
12-volt battery................................ 326
Tires ................................................... 329
Tire inflation pressure ................. 338
Wheels.............................................. 340
Air conditioning filter...................341
Cleaning the hybrid battery (trac- tion battery) air intake vent and fil-
ter..................................................... 343
Electronic key battery ................ 346
Checking and replacing fuses 348
Headlight aim................................. 350
Light bulbs ........................................ 351
7-1. Essential information Emergency flashers..................... 356
If your vehicle has to be stopped in an emergency ............................. 356
If the vehicle is trapped in rising water............................................... 357
7-2. Steps to take in an emergency If your vehicle needs to be towed........................................................... 359
If you think something is wrong 362
If a warning light turns on or a warn- ing buzzer sounds ..................... 364
If a warning message is displayed ........................................................... 374If you have a flat tire ....................
378
If the hybrid syst em will not start
.......................................................... 385
If you lose your keys.................... 387
If the fuel filler door cannot be opened .......................................... 387
If the electronic key does not oper- ate properly ................................. 388
If the 12-volt battery is discharged .......................................................... 390
If your vehicle overheats ........... 395
If the vehicle becomes stuck ... 398
8-1. Specifications Maintenance data (fuel, oil level, etc.) ................................................. 400
Fuel information............................ 407
Tire information ............................ 409
8-2. Customization Customizable features ............... 418
8-3. Items to initialize Items to initialize ........................... 429
9-1. For owners Reporting safety defects for U.S. owners ........................................... 432
Seat belt instructions for Canadian owners (in French) ................... 432
SRS airbag instructions for Cana- dian owners (in French) ......... 434
He

adlight aim instructions for
Canadian owners (in French) 440
7When trouble arises
8Vehicle specifications
9For owners

305
6
6
Maintenance and care
Maintenance and care
6-1. Maintenance and careCleaning and protecting the vehi-cle exterior ................................ 306
Cleaning and protecting the vehi- cle interior ................................. 309
6-2. Maintenance Maintenance requirements ... 312
General maintenance .............. 313
Emission inspection and mainte- nance (I/M) programs .......... 316
6-3. Do-it-yourself maintenance Do-it-yourself service precautions......................................................... 317
Hood................................................ 319
Positioning a floor jack............. 319
Engine compartment................ 321
12-volt battery............................. 326
Tires ................................................ 329
Tire inflation pressure .............. 338
Wheels........................................... 340
Air conditioning filter................341
Cleaning the hybrid battery (trac- tion battery) air intake vent and
filter .............................................. 343
Electronic key battery ............. 346
Checking and replacing fuses ........................................................ 348
Headlight aim.............................. 350
Light bulbs ..................................... 351

3176-3. Do-it-yourself maintenance
6
Maintenance and care
6-3.Do-it-yourself maintenance
Do-it-yourself service pre-
cautions
If you perform maintenance by
yourself, be sure to follow the cor-
rect procedure as given in these
sections.
Maintenance
ItemsParts and tools
12-volt battery
condition
( P.326)•Grease
• Conventional wrench
(for terminal clamp
bolts)
Brake fluid
level
( P.325)
• FMVSS No.116 DOT 3
or SAE J1703 brake
fluid
FMVSS No.116 DOT 4
or SAE J1704 brake
fluid
• Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine/power
control unit
coolant level
( P.323)
•“Toyota Super Long Life
Coolant” or a similar
high quality ethylene
glycol-based non-sili-
cate, non-amine, non-
nitrite and non-borate
coolant with long-life
hybrid organic acid
technology
For the U.S.A.:
“Toyota Super Long Life
Coolant” is pre-mixed
with 50% coolant and
50% deionized water.
For Canada:
“Toyota Super Long Life
Coolant” is pre-mixed
with 55% coolant and
45% deionized water.
• Funnel (used only for adding coolant)
Hybrid bat-
tery (traction
battery) air
intake vent
( P.343)
• Vacuum cleaner, etc.
• Phillips screwdriver
Engine oil level
( P.321)
•“Toyota Genuine Motor
Oil” or equivalent
•Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses
( P.348)• Fuse with same amper-
age rating as original
Headlight aim• Phillips-head screw-driver
Light bulbs
( P.351)
•Bulb with same number
and wattage rating as
original
• Flathead screwdriver
ItemsParts and tools

3486-3. Do-it-yourself maintenance
1Turn the power switch off.
2 Open the Fuse box cover.
Engine compartment: type A fuse
box
Push the tab in and lift the lid off.
Engine compartment: type B fuse
box
Push the tab in and lift the lid off.
Driver’s side instrument panel
Push the tab in and remove the lid. Make sure to push the tab in during
removal or installation.
3
Remove the fuse with the pullout
tool.
Only type A fuses can be removed using
the pullout tool.
4Check if the fuse is blown.
Type A and B:
Replace the blown fuse with a new fuse of
an appropriate amperage rating. The
amperage rating can be found on the fuse
box lid.
Type C:
Contact your Lexus dealer.
Type A
Checking and replacing
fuses
If any of the electrical components
do not operate, a fuse may have
blown. If this happens, check and
replace the fuses as necessary.
Checking and replacing fuses

3496-3. 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.351)
●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.

450Alphabetical index
Ignition switch (power switch) ..............143
Overheating.................................................395
Power switch ................................................. 143
Tachometer ..................................................... 76
Engine coolant.............................................. 323 Capacity .........................................................403
Checking ....................................................... 323
Preparing and checking before winter......................................................................... 253
Engine coolant temperature gauge ........76
Engine oil ..........................................................321 Capacity ......................................................... 402
Checking ......................................................... 321
Preparing and checking before winter......................................................................... 253
Warning light ...............................................365
Engine oil maintenance data .................. 323
EPS (Electric Power Steering) ...............247 Function .......................................................... 247
Warning light ...............................................366
EV drive mode............................................... 148
Event data recorder (EDR) ........................... 8
EV indicator ........................................................ 61
F
Flat tire ............................................................. 378 Tire pressure warning system ...............331
Floor mats ...........................................................22
Fluid Brake................................................................404
Hybrid transmission .................................404
Washer ........................................................... 325
Footwell light ..................................................277
Front passenger occupant classification system ...............................................................37
Front seats ......................................................... 117
Adjustment........................................................117
Cleaning.........................................................309
Correct driving posture .............................23
Driving position memory .......................... 118
Head restraints ...............................................121
Memory recall function ............................. 119 Power easy access system ...................... 118
Seat heaters .................................................. 273
Seat position memory ................................ 118
Seat ventilators ............................................ 273
Front side marker light ................................159 Light switch .................................................... 159
Front side marker lights Replacing light bulbs ..................... 351, 352
Front turn signal lights .................................154 Replacing light bulbs ..................... 351, 352
Turn signal lever .......................................... 154
Fuel ......................................................................170 Capacity .......................................................... 401
Fuel gauge ........................................................ 76
Information ....................................................407
Refueling.......................................................... 170
Type ................................................................... 401
Warning light ............................................... 367
Fuel consumption Average fuel economy ............................. 80
Current fuel consumption ....................... 80
Fuel filler door .................................................170 If the fuel filler do or cannot be opened
..........................................................................387
Refueling.......................................................... 170
Fuel gauge ..........................................................76
Fuses ................................................................. 348
G
Garage door opener ................................. 296
Gauges ................................................................76
Glove box .........................................................281
Glove box light ...............................................281
Grocery bag hooks .................................... 283
H
Hands Free Power Trunk Lid .................. 106
Headlights ........................................................159 Adaptive Front-lighting System (AFS)161
Automatic High Beam system ..............162
Light switch .................................................... 159

Alphabetical index455
Electronic key battery.............................. 346
Fuses ................................................................348
Light bulbs.......................................................351
Tires .................................................................. 378
Resetting the message indicating mainte- nance is required ........................................312
Road Sign Assist ............................................194
RSA (Road Sign Assist) ..............................194
S
SCB (Secondary Collision Brake) ........247
Seat belt reminder ligh t............................. 367
Seat belts............................................................ 24 Adjusting the seat belt................................ 26
Automatic Locking Retractor ................ 26
Child restraint system installation......... 43
Cleaning and maintaining the seat belt.........................................................................309
Emergency Locking Retractor .............. 26
How to wear your seat belt ..................... 25
How your child should wear the seat belt ............................................................................ 25
Pregnant women, proper seat belt use .............................................................................24
Reminder light and buzzer ................... 367
Seat belt extender ........................................ 25
Seat belt pretensioners .............................. 26
SRS warning light ......................................365
Seat heaters ................................................... 273
Seating capacity.............................................. 141
Seat position memory................................... 118
Seats..................................................................... 117 Adjustment precautions .............................117
Adjustment........................................................117
Child seats/child restraint system installa-tion .....................................................................42
Cleaning.........................................................309
Driving position memory .......................... 118
Head restraints ...............................................121
Power easy access system ...................... 118
Properly sitting in the seat .........................23
Seat heaters .................................................. 273 Seat position memory ................................ 118
Seat ventilators ............................................ 273
Seat ventilators ............................................. 273
Secondary Collision Brake (SCB) ........247
Sensor Automatic headlight system .................. 159
Automatic High Beam system ..............162
Inside rear view mirror ............................. 125
Intuitive parking assist ............................... 215
LTA (Lane Tracing Assist) ..................... 185
Parking Support Brake function (rear-crossing vehicles)...................................240
Parking Support Brake function (static objects) ........................................................235
Radar sensor ..................................... 172, 208
Rain-sensing windshield wipers ...........167
RCTA............................................................... 222
Service plug ...................................................... 63
Service reminder message .......................312
S-FLOW mode .............................................. 271
Shift lever Hybrid transmission................................... 150
Shift lever light ...............................................277
Side airbags ...................................................... 28
Side marker lights..........................................159 Light switch .................................................... 159
Side mirrors .....................................................125 Adjustment ..................................................... 125
BSM (Blind Spot Monitor)................... 206
Folding...............................................................126
Linked mirror functi on when reversing
............................................................................ 127
Mirror position memory ............................ 118
RCTA function .............................................. 221
Side turn signal lights ...................................154 Replacing light bulbs ................................. 351
Turn signal lever .......................................... 154
Side windows ..................................................128
Smart access system with push-button start.................................................................... 110Antenna location ........................................... 110
Entry functions ..................................... 99, 105