2022 LEXUS ES300h wiring

3116-1. Maintenance and care
6
Maintenance and care
Remove dirt and dust using a vac-
uum cleaner. Wipe dirty surfaces
with a cloth dampened with luke-
warm water.
 If dirt cannot be removed, wipe it off
with a soft cloth dampened with
neutral detergent diluted to approx-
imately 1%.
Wring out any excess water from
the cloth and thoroughly wipe off
remaining traces of detergent and
water.
QShampooing the carpets
There are several commercial foaming-
type cleaners available. Use a sponge or
brush to apply the foam. Rub in overlapping
circles. Do not use water. Wipe dirty sur-
faces and let them dry. Excellent results are
obtained by keeping the carpet as dry as
possible.
QHandling the seat belts
Clean with mild soap and lukewarm water
using a cloth or sponge. Also check the
belts periodically for excessive wear, fray-
ing or cuts.
QWhen cleaning the carpeted portions of
the glove box, console box, etc.
If a strong adhesive tape is used, there is a
possibility that the surface of the carpet
could be damaged.
Cleaning and protecting the
vehicle interior
Perform cleaning in a manner
appropriate to each component
and its material.
Protecting the vehicle interior
WARNING
QWater in the vehicle
ODo not splash or spill liquid in the vehi-
cle, such as on the floor, on the rear
seats, in the hybrid battery (traction
battery) air vents, and in the trunk.
(  P.64)
Doing so may cause the hybrid bat-
tery, electrical components, etc. to
malfunction or catch fire.
ODo not get any of the SRS components
or wiring in the vehicle interior wet.
(  P.28)
An electrical malfunction may cause
the airbags to deploy or not function
properly, resulting in death or serious
injury.
QCleaning the interior (especially
instrument panel)
Do not use polish wax or polish cleaner.
The instrument panel may reflect off the
windshield, obstructin g the driver’s view
and leading to an accident, resulting in
death or serious injury.
NOTICE
QCleaning detergents
ODo not use the following types of
detergent, as they may discolor the
vehicle interior or cause streaks or
damage to painted surfaces:
• Non-seat portions: Organic sub- stances such as benzene or gasoline,
alkaline or acidic solutions, dye, and
bleach
• Seats: Alkaline or acidic solutions, such as thinner, benzene, and alcohol
ODo not use polish wax or polish
cleaner. The instrument panel’s or
other interior part’s painted surface
may be damaged.

3506-3. Do-it-yourself maintenance
Normal fuse
Blown fuse
Type BNormal fuse
Blown fuse
Type CNormal fuse
Blown fuse
QAfter a fuse is replaced
OWhen installing the lid, make sure that the
tab is installed securely.
OIf the lights do not turn on even after the
fuse has been replaced, a bulb may need
replacement. ( P.352)
OIf the replaced fuse blows again, have the
vehicle inspected by your Lexus dealer.
QIf there is an overload in a circuit
The fuses are designed to blow, protecting
the wiring harness from damage.
A
B
A
B
A
B
WARNING
QTo 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.
ONever use a fuse of a higher amperage
rating than that indicated, or use any
other object in place of a fuse.
OAlways use a genuine Lexus fuse or
equivalent.
Never replace a fuse with a wire, even
as a temporary fix.
ODo not modify the fuses or fuse boxes.
NOTICE
QBefore replacing fuses
Have the cause of electrical overload
determined and repaired by your Lexus
dealer as soon as possible.

3717-2. Steps to take in an emergency
7
When trouble arises
QBrake hold operated indicator (warning buzzer)
QHybrid system overheat warning light* (warning buzzer)
*: This light illuminates on the multi-information display.
QMaster warning light (warning buzzer)
QWarning buzzer
In some cases, the buzzer may not be heard
due to being in a noisy location or audio
sound.
QFront passenger detection sensor, seat
belt reminder and warning buzzer
OIf luggage is placed on the front passen-
ger seat, the front passenger detection
sensor may cause the warning light to
flash and the warning buzzer to sound
even if a passenger is not sitting in the
seat.
OIf a cushion is placed on the seat, the sen-
sor may not detect a passenger, and the
warning light may not operate properly.
QSRS warning light
This warning light system monitors the air-
bag sensor assembly, front impact sensors,
side impact sensors (front door), side
impact sensors (front), side impact sensors
(rear), driver’s seat position sensor, driver’s
seat belt buckle switch, front passenger
occupant classification system (ECU and
sensors), “PASSENGER AIR BAG” indica- tor lights, front passenger’s seat belt buckle
switch, seat belt pret
ensioners, airbags,
interconnecting wiring and power sources.
(  P.28)
QElectric power steering system warning
light (warning buzzer)
When the 12-volt battery charge becomes
insufficient or the voltage temporarily
drops, the electric power steering system
warning light may come on and the warning
buzzer may sound.
QWhen the tire pressure warning light
comes on
Inspect the tires to check if a tire is punc-
tured.
If a tire is punctured: P.379
If none of the tires are punctured:
Turn the power switch off then turn it to ON
mode. Check if the tire pressure warning
light comes on or blinks.
Warning lightDetails/Actions
(flashes)
Indicates a malfunction in the brake hold system
 Have the vehicle inspected by your Lexus dealer immediately.
Warning lightDetails/Actions
Indicates that the hybrid system has overheated
Stop the vehicle in a safe place. Handling method ( P.397)
Warning lightDetails/Actions
A buzzer sounds and the warning light comes on and flashes to indicate
that the master warning system has detected a malfunction.
 P.374