2019 Lexus ES300h fuse

4TABLE OF CONTENTS
Emission inspection and mainte-nance (I/M) programs ............. 313
6-3. Do-it-yourself maintenance Do-it-yourself service precautions .314
Hood................................................... 316
Positioning a floor jack................ 316
Engine compartment................... 318
12-volt battery................................ 323
Tires ................................................... 326
Tire inflation pressure ................. 334
Wheels.............................................. 336
Air conditioning filter..................338
Electronic key battery ................ 339
Checking and replacing fuses . 341
Headlight aim................................. 343
Light bulbs ....................................... 344
7-1. Essential information Emergency flashers..................... 350
If your vehicle has to be stopped in an emergency ............................. 350
If the vehicle is trapped in rising water................................................ 351
7-2. Steps to take in an emergency If your vehicle needs to be towed....353
If you think something is wrong ........ 356
If a warning light turns on or a warn- ing buzzer sounds ..................... 358
If a warning message is displayed ... 368
If you have a flat tire..................... 372If the hybrid system
will not start......
379
If you lose your keys.................... 380
If the fuel filler door cannot be opened ........................................... 381
If the electronic key does not oper- ate properly .................................. 381
If the 12-volt battery is discharged .. 384
If your vehicle overheats ........... 388
If the vehicle becomes stuck .... 391
8-1. Specifications Maintenance data (fuel, oil level, etc.) ................................................. 394
Fuel information............................. 401
Tire information ............................ 403
8-2. Customization Customizable features ................ 412
8-3. Items to initialize Items to initialize ........................... 423
9-1. For owners Reporting safety defects for U.S. owners ........................................... 426
Seat belt instructions for Canadian owners (in French) ................... 426
SRS airbag instructions for Cana- dian owners (in French) ......... 428
Headlight aim instructions for Canadian owners (in French) 434
7When trouble arises
8Vehicle specifications
9For owners

299
6
6
Maintenance and care
Maintenance and care
6-1. Maintenance and careCleaning and protecting the vehi-cle exterior ................................ 300
Cleaning and protecting the vehi- cle interior ................................. 303
6-2. Maintenance Maintenance requirements .. 309
General maintenance .............. 310
Emission inspection and mainte- nance (I/M) programs .......... 313
6-3. Do-it-yourself maintenance Do-it-yourself service precautions314
Hood................................................ 316
Positioning a floor jack............. 316
Engine compartment................ 318
12-volt battery............................. 323
Tires ................................................ 326
Tire inflation pressure .............. 334
Wheels........................................... 336
Air conditioning filter...............338
Electronic key battery ............. 339
Checking and replacing fuses 341
Headlight aim.............................. 343
Light bulbs .................................... 344

3146-3. Do-it-yourself maintenance
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.323)•Grease
• Conventional wrench
(for terminal clamp
bolts)
Brake fluid
level
( P.322)
• 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.320)
•“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.304)
• Vacuum cleaner, etc.
• Phillips screwdriver
Engine oil level
( P.318)
•“Toyota Genuine Motor
Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses
( P.341)• Fuse with same amper-
age rating as original
Headlight aim• Phillips-head screw-driver
Light bulbs
( P.344)
•Bulb with same number
and wattage rating as
original
•Flathead sc rewdriver
ItemsParts and tools

3186-3. Do-it-yourself maintenance
Fuse boxes (P.341)
Engine oil filler cap ( P.319)
Engine oil level dipstick ( P.318)
Brake fluid reservoir ( P.322)
Radiator ( P.321)
Electric cooling fan
Condenser ( P.321)
Power control unit coolant reservoir ( P.321)
Engine coolant reservoir ( P.320)
Washer fluid tank ( P.322)
■12-volt battery
 P.323
With the engine at operating tempera-
ture and turned off, check the oil level
Engine compartment
Components
A
B
C
D
E
F
G
H
I
J
Checking and adding the engine
oil

3416-3. 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

3426-3. 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.344)
●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.

3797-2. 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.383)
 There may not be sufficient fuel in
the vehicle’s tank.
Refuel the vehicle. ( P.161)
 There may be a malfunction in the
immobilizer system. ( P.60)
 There may be a malfunction in the
steering lock system.
 The hybrid system may be malfunc-
tioning due to an electrical problem
such as electronic key battery
depletion or a blown fuse. However,
depending on the type of malfunc-
tion, an interim measure is available
to start the hybrid system.
One of the following may be the cause of the problem:

The 12-volt battery may be dis-
charged. ( P.384)
 The 12-volt battery terminal con-
nections may be lo ose or corroded.
( P.325)
One of the following may be the cause
of the problem:
 The 12-volt battery may be dis-
charged. ( P.384)
 One or both of the 12-volt battery
terminals may be disconnected.
( P.325)
Contact your Lexus dealer if the problem
cannot be repaired, or if repair procedures
are unknown.
When the hybrid syst em does not start,
the following steps can be used as an
interim measure to start the hybrid sys-
tem if the power switch is functioning
normally.
Do not use this starting procedure
except in cases of emergency.
1 Press the parking brake switch to
check that the parking brake is set.
(P.146)
Parking brake indicator will come on.
2 Shift the shift lever to P.
If the hybrid system will not
start
Reasons for the hybrid system not
starting vary depending on the situ-
ation. Check the following and per-
form the appropriate procedure:
The hybrid system will not start
even though the correct starting
procedure is being followed.
( P.135)
The interior lights and head-
lights are dim, or the horn does
not sound or sounds at a low vol-
ume.
The interior lights and head-
lights do not turn on, or the horn
does not sound.
Starting the hybrid system in an
emergency

3847-2. Steps to take in an emergency
If you have a set of jumper (or booster)
cables and a second vehicle with a 12-
volt battery, you can jump start your
vehicle using the following procedure.
1Confirm that the electronic key is
being carried.
When connecting the jumper (or booster)
cables, depending on the situation, the
alarm may activate and doors locked.
( P.63)
2 Open the hood ( P.316) and
open the fuse box cover.
Push the tab in and lift the lid off.
3 Open the exclusive jump starting
terminal cover.
4 Connect a positive jumper cable clamp to on your vehicle and connect the
clamp on the other end of the positive cable to on the second vehicle.
If the 12-volt battery is dis-
charged
The following procedures may be
used to start the hybrid system if the
12-volt battery is discharged.
You can also call your Lexus dealer
or a qualified repair shop.
Restarting the hybrid system
A
B