2021 LEXUS RX450h warning light

491-2. Child safety
1
For safety and security
tion
 Raise the seatback as much as pos-
sible
 Raise the seat to the highest position
 If the head restraint interferes with
the installation of the child restraint
system, and the head restraint can
be removed, remove the head
restraint
If the head restrain t cannot be removed,
raise it to the uppermost position.
WARNING
■When using a child restraint system
Observe the following precautions.
Failure to do so may result in death or
serious injury.
●Never install a re ar-facing child
restraint system on the front passenger
seat even if the “AIR BAG OFF” indi-
cator light is illuminated. In the event of
an accident, the force of the rapid infla-
tion of the front passenger airbag can
cause death or serious injury to the
child if the rear-facing child restraint
system is installed on the front passen-
ger seat.
●A forward-facing child restraint system
may be installed on the front passen-
ger seat only when it is unavoidable. A
child restraint system that requires a
top tether strap should not be used in
the front passenger seat since there is
no top tether strap anchor for the front
passenger seat.
●A forward-facing child restraint system
may be installed on the front passen-
ger seat only when it is unavoidable.
When installing a forward-facing child
restraint system on the front passenger
seat, raise the seatback as much as
possible, move the seat to the rear-
most position, and raise the seat to the
highest position, even if the “AIR BAG
OFF” indicator light is illuminated.
If the head restraint interferes with the
installation of the ch ild restraint system,
and the head restraint can be removed,
remove the head restraint.
If the head restrain t cannot be removed,
raise it to the uppermost position.

691-4. Hybrid system
1
For safety and security
The illustration is an example for explanation and may differ from the actual item.
Warning label
Hybrid battery (traction battery)
Rear electric motor (traction motor)
Service plug
High voltage cables (orange)
Front electric motor (traction motor)
Power control unit
Air conditioning compressor
■Running out of fuel
When the vehicle has run out of fuel and the
hybrid system cannot be started, refuel the
vehicle with at least enough gasoline to
make the low fuel level warning light
(  P.421) go off. If there is only a small
amount of fuel, the hybrid system may not be able to start. (The
standard amount of
fuel is about 2.9 gal. [11.0 L, 2.4 Imp. gal.],
when the vehicle is on a level surface. This
value may vary when the vehicle is on a
slope. Add extra fuel when the vehicle is
inclined.)
Hybrid system precautions
Take care when handling the hybrid system, as it is a high voltage system (about
650 V at maximum) as well as contains parts that become extremely hot when
the hybrid system is operating. Obey th e warning labels attached to the vehi-
cle.
System components
A
B
C
D
E
F
G
H

721-4. Hybrid system
Air intake vents
Air discharge vents (RX450h)
When a certain level of impact is
detected by the impact sensor, the
emergency shut off system blocks the
high voltage current and stops the fuel pump to minimize the risk of electrocu-
tion and fuel leakage. If the emergency
shut off system activates, your vehicle
will not restart. To restart the hybrid
system, contact your Lexus dealer.
A message is automatically displayed
when a malfunction occurs in the
hybrid system or an improper opera-
tion is attempted.
If a warning message is shown on the
multi-information display, read the
message and follow the instructions.
(
P.428)
■If a warning light comes on, a warning
message is displayed, or the 12-volt bat-
tery is disconnected
The hybrid system may not start. In this
case, try to start the system again. If the
“READY” indicator does not come on, con-
tact your Lexus dealer.
NOTICE
■Hybrid battery (traction battery) air
intake/discharge vents
●Do not place objects that will block the
air intake vents. The hybrid battery
(traction battery) may overheat and be
damaged.
●Clean the air intake/discharge vents
regularly to prevent the hybrid battery
(traction battery) from overheating.
●Do not get water or foreign materials
in either the air in take/discharge vents
as this may cause a short circuit and
damage the hybrid battery (traction
battery).
Emergency shut off system
A
B
Hybrid warning message

77
2
2
Vehicle status information and indicators
Vehicle status informationand indicators
.2-1. Instrument cluster
Warning lights and indicators........................................................... 78
Gauges and meters .................... 83
Multi-information display.......... 88
Head-up display ........................... 95
Energy monitor/consumption screen ............................................ 99

782-1. Instrument cluster
2-1.Instrument cluster
For the purpose of explanation, the following illustrations display all warning lights
and indicators illuminated.
Except F SPORT models
F SPORT models
Warning lights and indicators
The warning lights and indicators on th e instrument cluster, center panel and
outside rear view mirrors inform the driver of the status of the vehicle’s various
systems.
Warning lights and indicators displayed on the instrument cluster

792-1. Instrument cluster
2
Vehicle status information and indicators
Warning lights inform the driver of mal-
functions in the indicated vehicle’s sys-
tems.
Warning lights
(U.S.A.)
Brake system warning light*1
(  P.418)
(red)
(Canada)
Brake system warning light*1
(  P.418)
(yellow)
Brake system warning light*1
(  P.418)
High coolant temperature
warning light
*2 (  P.418)
Hybrid system overheat warn-
ing light
*2 (  P.419)
Charging system warning
light
*3 (  P.419)
Low engine oil pressure warn-
ing light
*2 (  P.419)
(U.S.A.)
Malfunction indicator lamp*1
(  P.419)
(Canada)
Malfunction indicator lamp*1
(  P.419)
SRS warning light
*1 (  P.420)
(U.S.A.)
ABS warning light*1 ( P.420)
(Canada)
ABS warning light*1 ( P.420)
Brake Override System warn-
ing light/Drive-Start Control
warning light
*2 (  P.420)
(red)
Electric power steering system
warning light
*1 ( P.421)
(yellow)
Electric power steering system
warning light
*1 ( P.421)
Low fuel level warning light
(  P.421)
Driver’s and front passenger’s
seat belt reminder light
(  P.421)
(RX450h)
Rear passengers’ seat
belt reminder light
*4
(  P.422)
(RX450hL)
Rear passengers’ seat
belt reminder
light
*4( P.422)
Tire pressure warning light
*1
(  P.422)
(orange)
LTA indicator ( P.422)
(flashes)
Intuitive parking assist OFF indi-
cator
*1 (if equipped) ( P.423)
(flashes)
RCTA OFF indicator*1 (if
equipped) ( P.423)
(flashes)
PKSB OFF indicator*1 (if
equipped) ( P.423)
(flashes or
illuminates)PCS warning light*1 (  P.424)
Slip indicator
*1 (  P.424)
(flashes)
(U.S.A.)
Parking brake indicator
(  P.424)

802-1. Instrument cluster
*1: These lights turn on when the power switch is turned to ON mode to indi-
cate that a system check is being per-
formed. They will turn off after the
hybrid system is on, or after a few sec-
onds. There may be a malfunction in a
system if a light does not come on, or
turn off. Have the vehicle inspected by
your Lexus dealer.
*2: This light illuminates on the multi-infor-mation display.
*3: Except F SPORT models: This light illu-minates on the multi-information dis-
play.
F SPORT models: This light illuminates
on the meter.
*4: This light illuminates on the center panel.
The indicators inform the driver of the operating state of the vehicle’s various
systems.
(flashes)
(Canada)
Parking brake indicator
(  P.424)
(flashes)
Brake hold operated indicator*1
(  P.425)
Master warning light
*1
(  P.425)
WARNING
■If a safety system warning light does
not come on
Should a safety system light such as the
ABS and SRS warning lights not come on
when you start the hybrid system, this
could mean that these systems are not
available to help pr otect you in an acci-
dent, which could result in death or seri-
ous injury. Have the vehicle inspected by
your Lexus dealer immediately if this
occurs.
Indicators
Turn signal indicator ( P.194)
(U.S.A.)
Headlight indicator ( P.200)
(Canada)
Tail light indicator ( P.200)
Headlight high beam indicator
(  P.201)
Automatic High Beam indica-
tor
*1 (  P.203)
Fog light indicator (if equipped)
(  P.206)
PCS warning light
*1, 2
(  P.222)
Cruise control indicator
(  P.245)
Dynamic radar cruise control
indicator ( P.238)
Cruise control “SET” indicator
(  P.238)
(white)
LTA indicator ( P.231)
(green)
LTA indicator ( P.231)
(orange)
(flashes)LTA indicator ( P.231)
BSM outside rear view mirror
indicators
*3, 4 (if equipped)
(  P.247, 261)
BSM indicator (if equipped)
(  P.247)

862-1. Instrument cluster
being used very often.
The gasoline engine will automatically stop
and restart under various conditions.Eco area
Shows that the vehicle is being driven in an
Eco-friendly manner.
Power area
Shows that an Eco-friendly driving range is
being exceeded (durin g full power driving
etc.)
●Depending on the selected driving mode,
the Hybrid System Indicator or tachome-
ter will be displayed. The Hybrid System
Indicator or tachometer can be set to
always be displayed on of the
multi-information display. ( P.92)
●The Hybrid System Indicator is displayed
in the following situations:
• When the tachometer setting is set to
change according to the driving mode
and a driving mode other than sport
mode is selected
• When the tachometer setting is set to always display the Hybrid System Indica-
tor
●By keeping the indicator needle (except
F SPORT models) or bar display (F
SPORT models) within the Eco area,
more Eco-friendly driving can be
achieved.
●Charge area indicates regeneration* sta-
tus. Regenerated energy will be used to
charge the hybrid battery (traction bat-
tery).
*: When used in this manual, regeneration
refers to the conversion of energy cre-
ated by the movement of the vehicle into
electrical energy.
■Tachometer
Hybrid System Indicator switches to the
tachometer when driving mode is in sport
mode.
The settings of the tachometer display can
be changed on the multi-information dis-
play.
■Engine speed
On hybrid vehicles, engine speed is pre-
cisely controlled in order to help improve
fuel efficiency and reduce exhaust emis-
sions etc.
There are times when the engine speed that
is displayed may differ even when vehicle
operation and driving conditions are the
same.
■Outside temperature display
●In the following situations, the correct
outside temperature may not be dis-
played, or the display may take longer
than normal to change:
• When stopped, or driving at low speeds (less than 12 mph [20 km/h])
• When the outside temperature has
changed suddenly (at the entrance/exit of
a garage, tunnel, etc.)
●When “--” or “E” is displayed, the system
may be malfunctioning. Take your vehicle
to your Lexus dealer.
■Liquid crystal display
Small spots or light sp ots may appear on the
display. This phenomenon is characteristic
of liquid crystal disp lays, and there is no
problem continuing to use the display.
■Customization
The gauges and meters can be customized
on of the multi-information display.
(  P.92)
C
D
WARNING
■The information display at low tem-
peratures
Allow the interior of the vehicle to warm
up before using the liquid crystal infor-
mation display. At extremely low tem-
peratures, the information display
monitor may respond slowly, and display
changes may be delayed.