power LEXUS RX450H 2019 User Guide

801-3. Hybrid system
RX450h_RX450hL_U
■If a warning light comes on, a warning message is displayed, or the 12-volt battery is dis-
connected
The hybrid system may not start. In this case, try to start the system again. If the “READY”
indicator does not come on, contact your Lexus dealer.
■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. 662)
go off. If there is only a small amount of fu el, 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.)
■Electromagnetic waves
●High voltage parts and cables on hybrid ve hicles incorporate electromagnetic shield-
ing, and therefore emit approximately the same amount of electromagnetic waves as
conventional gasoline powered vehicles or home electronic appliances.
●Your vehicle may cause sound interference in some third party-produced radio parts.
■Hybrid battery (traction battery)
The hybrid battery (traction battery) has a li mited service life. The lifespan of the hybrid
battery (traction battery) can change in acco rdance with driving style and driving condi-
tions.
WARNING
■High voltage precautions
This vehicle has high voltage DC and AC sy stems as well as a 12-volt system. DC and
AC high voltage is very dangerous and can cause severe burns and electric shock that
may result in death or serious injury.
●Never touch, disassemble, remove or replace the high voltage parts, cables or their
connectors.
●The hybrid system will become hot after starting as the system uses high voltage. Be
careful of both the high voltage and the high temperature, and always obey the warn-
ing labels attached to the vehicle.
●Never try to open the service plug access
hole located under the rear seat. The service
plug is used only when the vehicle is serviced
and is subject to high voltage.

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1
For safety and security
RX450h_RX450hL_U1-4. Theft deterrent system
The indicator light flashes after the
power switch has been turned off to
indicate that the system is operating.
The indicator light stops flashing after
the power switch has been turned to
ACCESSORY or ON mode to indi-
cate that the system has been canceled.
■System maintenance
The vehicle has a maintenance-fr
ee type immobilizer system.
■Conditions that may cause the system to malfunction
●If the grip portion of the key is in contact with a metallic object
●If the key is in close proximity to or touching a key registered to the security system (key
with a built-in transponder chip) of another vehicle
Immobilizer system
The vehicle’s keys have built-in transp onder chips that prevent the hybrid sys-
tem from starting if a key has not been previously registered in the vehicle’s
on-board computer.
Never leave the keys inside the vehicle when you leave the vehicle.
This system is designed to help preven t vehicle theft but does not guarantee
absolute security agai nst all vehicle thefts.

861-4. Theft deterrent system
RX450h_RX450hL_U
The alarm uses light and sound to give an alert when an intrusion is detected.
The alarm is triggered in the following situations when the alarm is set:
●A locked door is unlocked or opened in any way other than using the entry
function, wireless remote control or mech anical key. (The doors will lock again
automatically.)
●The hood is opened.
Close the doors and hood, and lock all
the doors. The system will be set auto-
matically after 30 seconds.
The indicator light changes from being
on to flashing when the system is set.
Do one of the following to de activate or stop the alarms:
●Unlock the doors.
●Turn the power switch to ACCESSORY or ON mode, or start the hybrid sys-
tem. (The alarm will be deactivated or stopped after a few seconds.)
Alarm
The alarm
Setting the alarm system
Deactivating or stopping the alarm

912. Instrument cluster
2
Instrument cluster
RX450h_RX450hL_U
Warning lights inform the driver of malfunctions in any of the vehicle’s systems.
Warning lights
*1
(U.S.A.)
Brake system warning light
( P. 660)
(U.S.A.)
Parking brake indicator
( P. 661)
*1
(Canada)
Brake system warning light
( P. 660)
(Canada)
Parking brake indicator
( P. 661)
*1Brake system warning light
( P. 660)*1, 2
Brake hold operated
indicator ( P. 661)
*1
(if equipped)
Charging system warning
light ( P. 660)
*1Electric power steering
system warning light
( P. 661)
*1
(U.S.A.)
Malfunction indicator lamp
( P. 660)*1Electric power steering
system warning light
( P. 661)
*1
(Canada)
Malfunction indicator lamp
( P. 660) LKA indicator (
P. 661)
*1SRS warning light
( P. 660)*1
Slip indicator ( P. 661)
*1
(U.S.A.)
ABS warning light
( P. 661)*1, 3PCS warning light
( P. 662)
*1
(Canada)
ABS warning light
( P. 661)*1, 2
(if equipped)
ICS OFF indicator
( P. 662)

922. Instrument cluster
RX450h_RX450hL_U
*1: These lights turn on when the power switch is turned to ON mode to indicate that a system check is being performe d. They will turn off after the hybrid system is on, or
after a few seconds. There ma y be a malfunction in a system if a light does not come
on, or turn off. Have the vehicl e inspected by your Lexus dealer.
*2: This light flashes to indicate a malfunction.
*3: This light flashes or illuminates to indicate a malfunction.
*4: This light illuminates on the center panel.
*5:RX450h
*6:RX450hL
The indicators inform the driver of the op erating state of the vehicle’s various sys-
tems.
Low fuel level warning light
(  P. 662)*4,6Rear passengers’ seat
belt reminder light
( P. 662)
Driver’s and front
passenger’s seat belt
reminder light ( P. 662)
*1Tire pressure warning light
( P. 662)
*4, 5Rear passengers’ seat
belt reminder light
( P. 662)*1Master warning light
( P. 663)
Indicators
Turn signal indicator
( P. 252) Fog light indicator
(
 P. 266)
(U.S.A.)
Headlight indicator
( P. 258) Cruise control indicator
(
 P. 306)
(Canada)
Tail light indicator
( P. 258) Radar cruise control
indicator (
P. 306)
Headlight high beam
indicator ( P. 259) Cruise control “SET”
indicator (
P. 306)
*1Automatic High Beam
indicator ( P. 262) LKA indicator (
P. 297)

942. Instrument cluster
RX450h_RX450hL_U
●Drive mode indicators
Except F SPORT models
F SPORT models
*1: These lights turn on when the power switch is turned to the ON mode to indicate that
a system check is being performed. They will turn off after the hybrid system is on, or
after a few seconds. There ma y 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: In order to confirm operation, the BSM ou tside rear view mirror indicators illuminate
in the following situations:
• When the BSM function is enabled on of the multi-information display, the
power switch is turned to ON mode.
• When the power switch is in ON mode, the BSM function is enabled on of the multi-information display.
If the system is functioning correctly, the BSM outside rear view mirror indicators will
turn off after a few seconds.
If the BSM outside rear view mirror indicators do not illuminate or do not turn off,
there may be a malfunction in the system.
If this occurs, have the vehicle inspected by your Lexus dealer. Eco drive mode indicator
(
 P. 379) “SPORT” indicator
(
 P. 379)
EV drive mode indicator
(  P. 244)
Eco drive mode indicator
( P. 379) “SPORT S” indicator
(
 P. 379)
“SPORT S+” indicator
(  P. 379) “CUSTOMIZE” indicator
(
 P. 379)
EV drive mode indicator
(  P. 244)

972. Instrument cluster
2
Instrument cluster
RX450h_RX450hL_U
Engine coolant temperature gauge
Displays the engine coolant temperature
Hybrid System Indicator
Displays hybrid system power output or regeneration level (P. 99)
This display changes to a tachometer depending on the drive mode, and can be set
to show the tachometer in any driv e mode on the settings display. (P. 108)
Outside temperature
Displays the outside temperature within the range of -40°F (-40°C) to 122°F
(50°C). Low outside temperature indicator comes on when the ambient tempera-
ture is 37°F (3°C) or lower.
Multi-information display
Presents the driver with a variety of vehicle data ( P. 101)
Displays warning messages in case of a malfunction ( P. 667)
Clock
Vehicles with a navigation system:
Time displayed is linked to the analog clock on the instrument panel. ( P. 548)
Vehicles with a Lexus Display Audio system:
Time displayed on the clock can be adju sted on of the multi-information dis-
play. ( P. 108)
Speedometer
Fuel gauge
Shift position display
( P. 246)
Odometer and trip meter ( P. 115)
1
2
3
4
5
6
7
8
9

992. Instrument cluster
2
Instrument cluster
RX450h_RX450hL_U
■The meters and display illuminate when
The power switch is in ON mode.
■Hybrid System IndicatorCharge area
Shows regenerative charging.
Hybrid Eco area
Shows that gasoline en gine power is not being used very often.
The gasoline engine will automatically stop and restart under various conditions.
Eco area
Shows that the vehicle is being dr iven in an Eco-friendly manner.
Power area
Shows that an Eco-friendly driving range is being exceeded (during full power driving
etc.)
●Depending on the selected driving mode, th e Hybrid System Indicator or tachometer
will be displayed. The Hybrid System Indica tor or tachometer can be set to always be
displayed on of the mult i-information display. (P. 108)
●The Hybrid System Indicator is disp layed in the following situations:
• When the tachometer setting is set to ch ange according to the driving mode and a
driving mode other than sport mode is selected
• When the tachometer setting is set to al ways display the Hybrid System Indicator
●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”* status. Regenerated energy will be used to
charge the hybrid battery (traction battery).
*: When used in this manual, re generation refers to the conversion of energy created by
the movement of the vehicle into electrical energy.
Except F SPORT modelsF SPORT models
1
2
3
4

1062. Instrument cluster
RX450h_RX450hL_U
*1:Resetting: P. 103
*2: Use the displayed fuel consumption as a reference.
*3: When only a small amount of fuel is added to the tank, the display may not be
updated.
When refueling, turn the power switch off. If the vehicle is refueled without turning the
power switch off, the display may not be updated.
*4: This distance is computed based on your average fuel consumption. As a result, the
actual distance that can be driven may differ from that displayed.
■Energy monitor
 P. 124
■Sway warning
Detects the sway of the vehicle within a lane, which is often associated with a
decrease in the driver’s at tention level, and displays the decrease in attention
using a bar display.
The shorter the bar length, the more the driver may need to rest.
This display is a part of the LKA (Lan e-Keeping Assist) system. The display is
enabled when the operating conditions of the vehicle sway warning are met.
(  P. 297)
■ AWD Control
Displays the driving force applie d to each wheel using segments.
The greater the number of segments di splayed, the greater the driving force
applied.

1122. Instrument cluster
RX450h_RX450hL_U
■Vehicle settings
ItemSettingsDetails
PBD (Power back door) ( P. 142)
The following power back door settings can be changed:
System settings
All OnSelect to enable the power back door
system.
Touchless Sensor
Off (if equipped)Select to disable the touchless sensor.
(Other power back door functions
remain enabled.)
All OffSelect to disable the power back door
system.
Open position adjust-
mentSelect to set the open position at
which the power back door will stop
when opened automatically.
Volume
3 (Loud)Select to set the volume of the buzzer
which sounds when the power back
door is operated.
2 (Medium)
1 (Low)
TPMS (Tire pressure warning system) (P. 612)
Tire pressure warning system initialization
Select to initialize the tire pressure
warning system. To perform initializa-
tion, press and hold the
switch.
Before performing initialization, make
sure to adjust the inflation pressure of
each tire to the specified level.
(  P. 613)
Scheduled maintenance (U.S.A. only)
Maintenance data reset
Select to reset the message indicating
maintenance is re quired, after the
required maintenanc e is performed.
(  P. 588)