2021 LEXUS ES300h fuses

4TABLE OF CONTENTS
6-3. Do-it-yourself maintenanceDo-it-yourself service precautions............................................................ 317
Hood................................................... 319
Positioning a floor jack................ 319
Engine compartment................... 321
12-volt battery................................ 326
Tires ................................................... 329
Tire inflation pressure ................. 339
Wheels............................................... 341
Air conditioning filter..................342
Cleaning the hybrid battery (trac- tion battery) air intake vent and fil-
ter..................................................... 344
Electronic key battery ................ 347
Checking and replacing fuses 349
Headlight aim.................................. 351
Light bulbs ....................................... 352
7-1. Essential information Emergency flashers..................... 358
If your vehicle has to be stopped in an emergency ............................. 358
If the vehicle is trapped in rising water............................................... 359
7-2. Steps to take in an emergency If your vehicle needs to be towed............................................................ 361
If you think something is wrong ........................................................... 364
If a warning light turns on or a warn- ing buzzer sounds ..................... 365
If a warning message is displayed ........................................................... 375
If you have a flat tire..................... 379If the hybrid syst
em will not start
.......................................................... 386
If you lose your keys.................... 388
If the fuel filler door cannot be opened .......................................... 388
If the electronic key does not oper- ate properly ................................. 389
If the 12-volt battery is discharged ........................................................... 391
If your vehicle overheats ........... 396
If the vehicle becomes stuck ... 399
8-1. Specifications Maintenance data (fuel, oil level, etc.) ................................................. 402
Fuel information............................ 409
Tire information ............................... 411
8-2. Customization Customizable features .............. 420
8-3. Items to initialize Items to initialize ............................. 431
9-1. For owners Reporting safety defects for U.S. owners ........................................... 434
Seat belt instructions for Canadian owners (in French) ................... 434
SRS airbag instructions for Cana- dian owners (in French) ......... 436
Headlight aim instructions for Canadian owners (in French) 44
2
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 .............. 339
Wheels............................................ 341
Air conditioning filter...............342
Cleaning the hybrid battery (trac- tion battery) air intake vent and
filter .............................................. 344
Electronic key battery ............. 347
Checking and replacing fuses ........................................................ 349
Headlight aim............................... 351
Light bulbs .................................... 352

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 simi-
lar high quality eth-
ylene glycol-based
non-silicate, 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% cool-
ant and 50% deionized
water.
For Canada:
“Toyota Super Long
Life Coolant” is pre-
mixed with 55% cool-
ant and 45% deionized
water.
• Funnel (used only for adding coolant)
Hybrid bat-
tery (traction
battery) air
intake vent
( P.344)
• Vacuum cleaner, etc.
• Phillips screwdriver
Engine oil level
( P.321)
•“Toyota Genuine
Motor Oil” or equiva-
lent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses
( P.349)• Fuse with same amper-
age rating as original
Headlight aim• Phillips-head screw-driver
ItemsParts and tools

3496-3. Do-it-yourself maintenance
6
Maintenance and care
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

3506-3. Do-it-yourself maintenance
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.352)
●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.

452Alphabetical index
If your vehicle has to be stopped in an
emergency ............................................... 358
Ignition switch (power switch) ..............145
Overheating.................................................396
Power switch .................................................145
Tachometer ..................................................... 78
Engine coolant.............................................. 323 Capacity .........................................................405
Checking ....................................................... 323
Preparing and checking before winter......................................................................... 254
Engine coolant temperature gauge ....... 78
Engine oil ..........................................................321 Capacity .........................................................404
Checking ......................................................... 321
Preparing and checking before winter......................................................................... 254
Warning light ...............................................366
Engine oil maintenance data .................. 323
EPS (Electric Power Steering) .............. 248 Function .......................................................... 248
Warning light ............................................... 367
EV drive mode............................................... 150
Event data recorder (EDR) ............................7
EV indicator ...................................................... 62
F
Flat tire ............................................................. 379 Tire pressure warning system ...............331
Floor mats ...........................................................22
Fluid Brake................................................................406
Hybrid transmission .................................406
Washer ........................................................... 325
Footwell light ..................................................277
Front passenger occupant classification system ...............................................................37
Front seats ......................................................... 119 Adjustment....................................................... 119
Cleaning.........................................................309
Correct driving posture .............................23
Driving position memory.........................120 Head restraints..............................................123
Memory recall function............................. 122
Power easy access system .................... 120
Seat heaters .................................................. 273
Seat position memory .............................. 120
Seat ventilators ............................................ 273
Front side marker light ................................. 161 Light switch ...................................................... 161
Front side marker lights Replacing light bulbs ................... 352, 353
Front turn signal lights .................................156 Replacing light bulbs ................... 352, 353
Turn signal lever .......................................... 156
Fuel ...................................................................... 172 Capacity ........................................................ 403
Fuel gauge ........................................................ 78
Information ................................................... 409
Refueling........................................................... 172
Type ................................................................. 403
Warning light .............................................. 368
Fuel consumption Average fuel economy .............................. 82
Current fuel consumption ........................ 82
Fuel filler door ................................................. 172 If the fuel filler do or cannot be opened
......................................................................... 388
Refueling........................................................... 172
Fuel gauge ......................................................... 78
Fuses ................................................................. 349
G
Garage door opener ................................. 296
Gauges ............................................................... 78
Glove box .........................................................281
Glove box light ...............................................281
Grocery bag hooks .................................... 283
H
Hands Free Power Trunk Lid .................. 108
Headlights ......................................................... 161 Adaptive Front-lighting System (AFS)

Alphabetical index457
........................................................................ 388
Opening the fuel tank cap ...................... 172
Regenerative braking ................................... 62
Remote Touch .............................................. 258
Replacing Electronic key battery.............................. 347
Fuses ................................................................ 349
Light bulbs..................................................... 352
Tires .................................................................. 379
Resetting the message indicating mainte- nance is required ........................................312
Road Sign Assist ............................................196
RSA (Road Sign Assist) ..............................196
S
SCB (Secondary Collision Brake) ....... 248
Seat belt reminder ligh t............................. 368
Seat belts............................................................ 24 Adjusting the seat belt................................ 26
Automatic Locking Retractor ................ 26
Child restraint system installation ......... 44
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 ...................368
Seat belt extender ........................................ 25
Seat belt pretensioners ...............................27
SRS warning light ......................................366
Seat heaters ................................................... 273
Seating capacity.............................................143
Seat position memory..................................120
Seats..................................................................... 119 Adjustment precautions ............................ 119
Adjustment....................................................... 119
Child seats/child restraint system instal-lation................................................................. 43
Cleaning.........................................................309 Driving position memory ........................ 120
Head restraints..............................................123
Power easy access system .................... 120
Properly sitting in the seat ........................ 23
Seat heaters .................................................. 273
Seat position memory .............................. 120
Seat ventilators ............................................ 273
Seat ventilators ............................................. 273
Secondary Collision Brake (SCB) ....... 248
Sensor Automatic headlight system .................... 161
Automatic High Beam system ............. 164
Inside rear view mirror .............................. 127
Intuitive parking assist ................................216
LTA (Lane Tracing Assist) ..................... 187
Parking Support Brake function (rear-crossing vehicles).....................................241
Parking Support Brake function (static objects) ........................................................236
Radar sensor ....................................... 174, 210
Rain-sensing windshield wipers .......... 169
RCTA............................................................... 223
Service plug ...................................................... 64
Service reminder message .......................312
S-FLOW mode .............................................. 271
Shift lever Hybrid transmission................................... 152
Shift lever light ...............................................277
Side airbags ...................................................... 28
Side marker lights........................................... 161 Light switch ...................................................... 161
Side mirrors ..................................................... 127 Adjustment ...................................................... 127
BSM (Blind Spot Monitor)................... 208
Folding.............................................................. 128
Linked mirror functi on when reversing
............................................................................129
Mirror position memory .......................... 120
RCTA function ............................................ 222
Side turn signal lights ...................................156 Replacing light bulbs ................................352
Turn signal lever .......................................... 156