Page 542 of 640
5428-2. Steps to take in an emergency
RC300h_EE(OM24740E)
Master warning light
The master warning light also comes on or flashes in order to indicate that a message is currently being displayed on the multi-information display.
Multi-information display
If any of the warning message is shown again after the following actions have
been performed, contact any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional.
If a warning message is displayed
If a warning is shown on the multi-information display, stay calm and perform
the following actions:
Except F SPORT modelsF SPORT models (main meter in
center position)
F SPORT models (main meter
moved to the right)
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Page 550 of 640

5508-2. Steps to take in an emergency
RC300h_EE(OM24740E)
Indicates that the Pop Up Hood system has operated A buzzer also sounds. Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional.
Indicates a malfunction in the Pop Up Hood system A buzzer also sounds. Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional.
(If equipped)
Indicates that the LDA (Lane Departure Alert) systemcannot be used because the vehicle speed is lower than
approximately 50 km/h (32 mph) Drive the vehicle at 50 km/h (32 mph) or higher.
Indicates that the hybrid system was stopped while driv- ingA buzzer also sounds.
Operate the steering wheel with more force than usual.
Indicates that the power switch is turned off or turned toACCESSORY mode and the driver’s door is opened
while the lights are turned on A buzzer also sounds. Turn the lights off.
(If equipped)
Indicates that the moon roof is not fully closed (with the power switch off, and the driver’s door open)A buzzer also sounds.
Close the moon roof.
Warning messageDetails/Actions
(Flashes)
(Flashes)
Page 552 of 640
5528-2. Steps to take in an emergency
RC300h_EE(OM24740E)
Indicates a malfunction in the automatic headlight
leveling systemA buzzer also sounds.
Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates a malfunction in:
• The Automatic High Beam system (if equipped); or
• The LED headlight system A buzzer also sounds.
Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates that the accelerator and brake pedals are
being depressed simultaneously, and the brake override
system is operating. ( P. 207)
Release the accelerator or brake pedal.
Indicates that the tire in flation pressure is low
Check the tire inflation pressure, and adjust to the
appropriate level.
Warning messageDetails/Actions
(Flashes)
Page 554 of 640

5548-2. Steps to take in an emergency
RC300h_EE(OM24740E)
Indicates that the engine oil is scheduled to be changed.
(The indicator will not work properly unless the message has been reset.) Check the engine oil, and change if necessary.
After changing the engine oil, the message should be reset.
Indicates that the engine oil should be changed. (Afterthe engine oil is changed and the message has been
reset.) Check and change the engine oil, and oil filter by any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional. After changing the engine oil, the message should bereset.
(If equipped)
Indicates that the Automatic High Beam switch ispressed while the headlights are in low beam.
Turn the high beam on and press the Automatic High Beam switch again.
(If equipped)
Indicates that, since the VSC (Vehicle Stability Control)system was turned off, the pre-crash brake system oper-
ation is stopped Operation of the pre-crash brake assist is alsostopped.
Turn the VSC on. (P. 307)
(If equipped)
Indicates that the PCS (Pre-Crash Safety system) is not currently functional because the grille cover or the sen- sor is dirty
Check the grille cover and the sensor and clean them if they are dirty.
Warning messageDetails/Actions
(Flashes)
Page 573 of 640

5738-2. Steps to take in an emergency
8
When trouble arises
RC300h_EE(OM24740E)
■If the tire is inflated to more than the recommended level
Disconnect the hose from the valve.
Disconnect the hose from the valve, remove the air release cap from the hose and then reconnect the hose.
Turn the compressor switch on and wait for several seconds, then turn it off. Check that the air pressure indicator sh ows the recommended level. (P. 604) If the air pressure is lower than the reco mmended level, turn the compressor switch on
again and repeat the inflation procedure un til the recommended pressure is reached.
■After a tire is repaired with the emergency tire puncture repair kit
●The tire pressure warning valve and transmitter should be replaced.
●Even if the tire inflation pressure is at the recommended level, the tire pressure warning light may come on/flash.
■Note for checking the emergency tire puncture repair kit
Check the sealant expiry date occasionally. The expiry date is shown on the bottle. Do not use sealant whose expiry date has alreadypassed. Otherwise, repairs conducted using th e emergency tire puncture repair kit may
not be performed properly.
Install the air release cap to the end of the hose and push the protrusion on the airrelease cap into the valve to let some air out.
WARNING
■Caution while driving
Observe the following precautions. Failure to do so may cause an accident.
●The emergency tire puncture repair kit is made exclusively for your vehicle. Do notuse it on other vehicles.
●Do not use the emergency tire puncture repa ir kit for tires that are a different size
than the specified ones or fo r any other purpose. Doing so may cause the tires to not be repaired properly.
■Precautions for use of the sealant
●Ingesting the sealant is hazardous to your health. If you ingest sealant, consume asmuch water as possible, then immediately consult a doctor.
●If sealant gets in eyes or adheres to skin, immediately wash it off with water. If discom-
fort persists, consult a doctor.
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Page 585 of 640

5858-2. Steps to take in an emergency
8
When trouble arises
RC300h_EE(OM24740E)
WARNING
■Avoiding 12-volt battery fires or explosions
Observe the following precautions to preven t accidentally igniting the flammable gas that may be emitted from the 12-volt battery:
●Make sure each jumper cable is connected to the correct terminal and that it is notunintentionally in contact with any other than the intended terminal.
●Do not allow the other end of the jumper cable connected to the “+” terminal to come
into contact with any other parts or metal surfaces in the area, such as brackets or unpainted metal.
●Do not allow the + and - clamps of the jumper cables to come into contact with each
other.
●Do not smoke, use matches, cigarette light ers or allow open flame near the 12-volt battery.
■12-volt battery precautions
The 12-volt battery contains poisonous and corrosive acidic electrolyte, while related parts contain lead and lead compounds. Observe the following precautions when han-
dling the 12-volt battery:
●When working with the 12-volt battery, always wear safety glasses and take care not to allow any 12-volt battery fluids (acid) to come into contact with skin, clothing or the
vehicle body.
●Do not lean over the 12-volt battery.
●In the event that 12-volt battery fluid comes into contact with the skin or eyes, immedi-
ately wash the affected area with water and seek medical attention. Place a wet sponge or cloth over the affected area until medical attention can bereceived.
●Always wash your hands after handling the 12-volt battery support, terminals, andother battery-related parts.
●Do not allow children near the 12-volt battery.
■After recharging the 12-volt battery
Have the 12-volt battery inspected at any authorized Lexus dealer or repairer, or another duly qualified and equipped professional as soon as possible.
If the 12-volt battery is deteriorating, co ntinued use may cause the 12-volt battery to emit a malodorous gas, which may be de trimental to the health of passengers.
■When replacing the 12-volt battery
P. 483
Page 610 of 640
6109-2. Customization
RC300h_EE(OM24740E)
■Door lock ( P. 144, 150, 578)
■Smart entry & start system and wireless remote control (P. 144, 150)
FunctionDefault settingCustomized setting
Unlocking using a mechanical key
Both side
doors unlocked in one step
Driver’s door unlocked in one step, both side
doors unlocked in two steps
——O
Speed-detecting automatic doorlock functionOnOffO—O
Shifting gears to position other
than P locks both side doorsOffOnO—O
Shifting gears to P unlocks both side doorsOffOnO—O
Opening driver's door unlocksboth side doorsOnOffO—O
Locking/unlocking of the trunk
when both side doors are locked/unlockedOnOff——O
123
FunctionDefault settingCustomized setting
Operation signal (Emergency flashers)OnOffO—O
Time elapsed before automatic
door lock function is activated if door is not opened after beingunlocked
30 seconds
60 seconds
——O120 seconds
Open door warning buzzerOnOff——O
Welcome light illumination con-
trolOnOff——O
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Page 622 of 640

622What to do if... (Troubleshooting)
RC300h_EE(OM24740E)
●Is the window lock switch pressed?
The power window except for the one at the driver’s seat cannot be operated
if the window lock switch is pressed. ( P. 196)
●The auto power off function will be operated if the vehicle is left in ACCES-
SORY or ON mode (the hybrid system is not operating) for a period of time.
( P. 217)
●The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts? ( P. 539)
●The parking brake indicator is on
Is the parking brake released? ( P. 230)
Depending on the situation, other types of warning buzzer may also sound.
( P. 537, 542)
●Did anyone inside the vehicle open a door or anything move inside the vehicle
during setting the alarm?
The sensor detects them and the alarm sounds. ( P. 102)
Do one of the following to deactivate or stop the alarm:
• Unlock the doors or open the trunk using the entry function or wireless remote con-
trol. • Start the hybrid system.
The windows do not open or close by operating the power window
switches
The power switch is turned off automatically
A warning buzzer sounds during driving
An alarm is activated and th e horn sounds (if equipped)