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841-3. Hybrid system
RX450h_U_OM0E013U
WARNING
■Hybrid battery (traction battery)
●Never resell, hand over or modify the hybrid battery. To prevent accidents, hybrid
batteries that have been removed from a disposed vehicle are collected through
Lexus dealer. Do not dispose of the battery yourself.
Unless the battery is properly collected, the following may occur, resulting in death
or serious injury:
• The hybrid battery may be illegally disposed of or dumped, and it is hazardous to
the environment or someone may touch a high voltage part, resulting in an electric
shock.
• The hybrid battery is intended to be used exclusively with your hybrid vehicle. If the hybrid battery is used outside of your vehicle or modified in any way, accidents
such as electric shock, heat generation , smoke generation, an explosion and elec-
trolyte leakage may occur.
When reselling or handing over your vehicle, the possibility of an accident is
extremely high because the person receiving the vehicle may not be aware of these
dangers.
●If your vehicle is disposed of without the hybrid battery having been removed, there is
a danger of serious electric shock if high voltage parts, cables and their connectors
are touched. In the event that your vehicle must be disposed of, the hybrid battery
must be disposed of by your Lexus dealer or a qualified service shop. If the hybrid bat-
tery is not disposed of properly, it may cause electric shock that can result in death or
serious injury.
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 regularl y to prevent the hybrid battery (traction
battery) from overheating.
●Do not get water or foreign materials in either the air intake/discharge vents as this
may cause a short circuit and damage the hybrid battery (traction battery).
●Do not carry large amounts of water such as water cooler bottles in the vehicle. If
water spills onto the hybrid battery (tract ion battery), the battery may be damaged.
Have the vehicle inspected by your Lexus dealer.
Page 87 of 660
871-4. Theft deterrent system
1
For safety and security
RX450h_U_OM0E013U
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
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881-4. Theft deterrent system
RX450h_U_OM0E013U
■System maintenance
The vehicle has a maintenance-free type alarm system.
■Items to check before locking the vehicle
To prevent unexpected triggering of the alarm and vehicle theft, make sure of the follow-
ing:
●Nobody is in the vehicle.
●The windows and moon roof or panoramic mo on roof are closed before the alarm is
set.
●No valuables or other personal items are left in the vehicle.
■Triggering of the alarm
The alarm may be triggered in the following situations:
(Stopping the alarm deactivates the alarm system.)
■Alarm-operated door lock
In the following cases, depending on the si tuation, the door may automatically lock to
prevent improper entry into the vehicle:
●When a person remaining in the vehicle un locks the door and the alarm is activated.
●While the alarm is activated, a person remaining in the vehicle unlocks the door.
●When recharging or replacing the 12-volt battery
●A person inside the vehicle opens a door or
hood, or unlocks the vehicle.
●The 12-volt battery is recharged or replaced
when the vehicle is locked. ( P. 570)
NOTICE
■To ensure the system operates correctly
Do not modify or remove the system. If modified or removed, the proper operation of
the system cannot be guaranteed.
Page 98 of 660
982. Instrument cluster
RX450h_U_OM0E013U
Engine coolant temperature gauge
Displays the engine coolant temperature
Hybrid System Indicator
Displays hybrid system power ou tput or regeneration level (P. 100)
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. 109)
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. 102)
Displays warning messages in case of a malfunction ( P. 543)
Clock
Time displayed is linked to the analog clock on the instrument panel. ( P. 433)
Speedometer
Fuel gauge
Shift position display
( P. 239)
Odometer and trip meter ( P. 115)
1
2
3
4
5
6
7
8
9
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1012. Instrument cluster
2
Instrument cluster
RX450h_U_OM0E013U
■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 of the multi-information
display. ( P. 109)
■Engine speed
On hybrid vehicles, engine speed is precisel y controlled in order to help improve fuel
efficiency and reduce exhaust emissions etc.
There are times when the engine speed that is displayed may differ even when vehicle
operation and driving conditions are the same.
■Brightness of the meters (d ay mode and night mode)
The brightness of the meters is changed between day mode and night mode.
●Day mode: When the tail lights are off or when the tail lights are on but the surrounding
area is bright
●Night mode: When the tail lights are on and the surrounding area is dark
■Outside temperature display
●In the following situations, the correct outside temperature may not be displayed, 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 sy stem may be malfunctioning.
Take your vehicle to your Lexus dealer.
■Clock settings screen
If the clock adjustment screen is displayed continuously when attempting to change the
clock settings, the system may be malfunctioning.
Have the vehicle inspected by your Lexus dealer.
■Customization
Some functions can be customized. ( P. 109)
NOTICE
■To prevent damage to the engine and its components
●Do not let the indicator needle of the tachometer enter the red zone, which indicates
the maximum engine speed.
●The engine may be overheating if the engine coolant temperature gauge is in the red
zone (H). In this case, immediately stop the vehicle in a safe place, and check the
engine after it has cooled completely. ( P. 574)
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1022. Instrument cluster
RX450h_U_OM0E013U
The multi-information display presents the driver with a variety of driving-related
data, such as the current outside temperature. The multi-information display can
also be used to change the display settings and other settings.
Except F SPORT models
Menu icon display area
Displays the following items.
When a menu icon is not selected, the outside temperature and clock are displayed. •Menu icons ( P. 105)
• Outside temperature ( P. 97)
•Clock ( P. 97)
Content display area
A variety of information can be displayed by selecting a menu icon. Additionally,
warning or suggestion/advice pop-up displa ys will be displayed in some situations.
• Menu icon content ( P. 105)
• Suggestion function ( P. 116)
• Warning message ( P. 543)
Indicator/shift position display area
Displays the following items:
•Indicators ( P. 92)
• Shift position display ( P. 239)
Multi-information display
Summary of functions
1
2
3
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1032. Instrument cluster
2
Instrument cluster
RX450h_U_OM0E013U
Odometer/trip meter display area (P. 115)
Displays the following items:
• Odometer/trip meter
• Distance until next engine oil change
Meter control switches ( P. 104)
“ODO/TRIP” switch ( P. 105)
F SPORT models
Outside temperature ( P. 97)
Menu icons ( P. 105)
Content display area
A variety of information can be displayed by selecting a menu icon. Additionally,
warning or suggestion/advice pop-up displa ys will be displayed in some situations.
• Menu icon content ( P. 105)
• Suggestion function ( P. 116)
• Warning message ( P. 543)
Indicators/clock
•Indicators ( P. 92)
•Clock ( P. 97)
Shift position display ( P. 239)
Odometer/trip meter display area ( P. 115)
Displays the following items:
• Odometer/trip meter
• Distance until next engine oil change
Meter control switches ( P. 104)
“ODO/TRIP” switch ( P. 105)
4
5
6
1
2
3
4
5
6
7
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Page 111 of 660
1112. Instrument cluster
2
Instrument cluster
RX450h_U_OM0E013U
■HUD (Head-up display) (if equipped) (P. 118)
The following head-up displa y settings can be changed:
■Clock (on multi-information display) ( P. 97)
The following clock setting can be changed:
ItemSettingsDetails
Brightness/Position Select to adjust the brightness/posi-
tion of the head-up display.
• Press the / switch to adjust
the display brightness.
• Press the / switch to adjust the display position.
Gauge information
No display
Select to set the content displayed on
the head-up display.Hybrid System Indi-
cator
Tachometer
Driving support
Navigation system
Select to enable/d isable head-up dis-
play content.Driving Assist
Compass
Audio system
ItemSettingsDetails
Display mode 12-hour display
Select to set the display mode of the
clock.
24-hour display