Lexus ES300h 2019 Owner's Manual (OM06178U)

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.

3436-3. Do-it-yourself maintenance
6
Maintenance and care
Vehicles with single-beam head-
lightsAdjustment bolt A
Adjustment bolt B
Vehicles with triple-beam headlightsAdjustment bolt A
Adjustment bolt B
 Make sure the vehicle has a full tank
of gasoline and the area around the
headlight is not deformed.
 Park the vehicle on level ground. 
Make sure the tire inflation pressure
is at the specified level.
 Have someone sit in the driver’s
seat.
 Bounce the vehicle several times.
Vehicles with single-beam head-
lights
1 Using a Phillips-head screwdriver,
turn bolt A in either direction.
Remember the turning direction and the
number of turns.
2Turn bolt B the same number of
turns and in the same direction as
step 1.
If the headlight cannot be adjusted using
this procedure, take the vehicle to your
Lexus dealer to adjust the headlight aim.
Headlight aim
Vertical movement adjusting
bolts
Before checking the headlight
aim
A
B
A
B
Adjusting the headlight aim

3446-3. Do-it-yourself maintenance
Vehicles with triple-beam headlights
1 Using a Phillips-head screwdriver,
turn bolt A in either direction.
Remember the turning direction and the
number of turns.
2Turn bolt B the same number of
turns and in the same direction as
step 1.
If the headlight cannot be adjusted using
this procedure, take the vehicle to your
Lexus dealer to adjust the headlight aim.
Front turn signal lights (vehicles
with single-beam headlights)
Front side marker lights (vehicles
with single-beam headlights)
■Bulbs that need to be replaced by
your Lexus dealer
 Headlights
 Front position lights and daytime
running lights
 Front turn signal lights (vehicles with
triple-beam headlights)
 Front side marker lights (vehicles
with triple-beam headlights)
Light bulbs
You may replace the following bulb
by yourself. Before replacing,
check the wattage of the light bulb
to be replaced. As there is a danger
that components may be damaged,
we recommend that replacement is
carried out by your Lexus dealer.
Bulb location
A
B

3456-3. Do-it-yourself maintenance
6
Maintenance and care
Cornering lights
 Side turn signal lights
 Outer foot lights
 Tail lights
 Stop lights
 Rear turn signal lights
 Rear side marker lights
 Back-up lights
 High mounted stoplight
 License plate lights
■LED lights
The lights other than the front turn signal
lights (vehicles with single-beam head-
lights) and front side marker lights (vehicles
with single-beam head lights) each consist
of a number of LEDs. If any of the LEDs
burn out, take your vehicle to your Lexus
dealer to have the light replaced.
■Condensation build-up on the inside of
the lens
Temporary condensation build-up on the
inside of the headlight lens does not indi-
cate a malfunction. Contact your Lexus
dealer for more information in the following
situations:
●Large drops of water ha ve built up on the
inside of the lens.
●Water has built up inside the headlight.
■When replacing light bulbs
 P.342
■Front turn signal lights (vehicles
with single-beam headlights)/front
side marker lights (vehicles with
single-beam headlights)
1 To ensure enough space to per-
form work, turn the steering wheel to rotate the front wheel away from
the bulb to be replaced. Remove
the fender liner clip.
Turn the steering wheel to the left when
replacing the right side light bulb, and turn
the steering wheel to the right when
replacing the left side light bulb.
2
To protect the front bumper from
being damaged, apply protective
tape around the clips as shown in
the illustration.
Use masking tape, etc. Do not use duct
tape, as it may leave residue or damage the
paint when removed.
3Insert a flathead screwdriver
between the front bumper and
Replacing light bulb

3466-3. Do-it-yourself maintenance
fender liner and then separate the
front bumper from the fender liner.
To separate the front bumper from the
fender liner, pry up the fender liner while
pulling the front bumper outward as shown
in the illustration.
4Pull back the fender liner and turn
the bulb base counterclockwise.
Front turn signal lights
Front side marker lights 5
Remove the light bulb.
6 Install a new light bulb then install
the bulb base to the light unit by
inserting it and turning the bulb
base clockwise.
After installing the light bulb, turn on the
front turn signal light to visually check that
there is no light leaking from the bulb base.
7 Return the fender liner to its origi-
nal position, and install the clip.
Make sure that the fend er liner is correctly
positioned on the inner side of the front
A
B

3476-3. Do-it-yourself maintenance
6
Maintenance and care
bumper.
8Engage the clips to the front
bumper to install the fender liner,
and then remove the protective
tape.
WARNING
■Replacing light bulb
●Turn off the light. Do not attempt to
replace the bulb immediately after
turning off the light.
The bulb become very hot and may
cause burns.
●Do not touch the glass portion of the
light bulb with bare hands. When it is
unavoidable to hold the glass portion,
use and hold with a clean dry cloth to
avoid getting moisture and oils on the
bulb.
Also, if the bulb is scratched or
dropped, it may blow out or crack.
●Fully install light bulb and any parts
used to secure it. Failure to do so may
result in heat damage, fire, or water
entering the light unit. This may dam-
age the light or cause condensation to
build up on the lens.
■To prevent damage or fire
●Make sure bulb is fully seated and
locked.
●Check the wattage of the bulb before
installing to prevent heat damage.

3486-3. Do-it-yourself maintenance

349
7
7
When trouble arises
When trouble arises
7-1. Essential informationEmergency 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 warning buzzer sounds ....... 358
If a warning message is displayed ........................................................ 368
If you have a flat tire.................. 372
If the hybrid system will not start ........................................................ 379
If you lose your keys .................. 381
If the fuel filler door cannot be opened......................................... 381
If the electronic key does not operate properly .................... 382
If the 12-volt battery is discharged ........................................................ 384
If your vehicle overheats ........ 389
If the vehicle becomes stuck 392

3507-1. Essential information
7-1.Essential information
Press the switch to flash all of the turn
signal lights.
To turn them off, press the switch once
again.
■Emergency flashers
●If the emergency flashers are used for a
long time while the hybrid system is not
operating (while the “READY” indicator
is not illuminated), the 12-volt battery may
discharge.
●If any of the SRS airbags deploy (inflate)
or in the event of a strong rear impact, the
emergency flashers will turn on automati-
cally.
The emergency flashers will turn off auto-
matically after operating for approxi-
mately 20 minutes. To manually turn the
emergency flashers off, press the switch
twice.
(The emergency flashers may not turn on
automatically dependin g on the force of
the impact and conditions of the colli-
sion.)
1 Steadily step on the brake pedal
with both feet and firmly depress it.
Do not pump the brake pedal repeatedly
as this will increase the effort required to
slow the vehicle.
2Shift the shift lever to N.
If the shift lever is shifted to N
3 After slowing down, stop the vehi-
cle in a safe place by the road.
4 Stop the hybrid system.
If the shift lever cannot be shifted to
N
3 Keep depressing the brake pedal
with both feet to reduce vehicle
speed as much as possible.
4 To stop the hybrid system, press
and hold the power switch for 2
consecutive seconds or more, or
Emergency flashers
The emergency flashers are used to
warn other drivers when the vehicle
has to be stopped in the road due to
a breakdown, etc.
Operating instructions
If your vehicle has to be
stopped in an emergency
Only in an emergency, such as if it
becomes impossible to stop the
vehicle in the normal way, stop the
vehicle using the following proce-
dure:
Stopping the vehicle