Page 556 of 640

5568-2. Steps to take in an emergency
RC300h_EE(OM24740E)
■Warning messages
The warning message illustrations used are in tended as examples, and may differ from the image that is actually displaye d on the multi-information display.
■Warning message in radar cruise mode (if equipped)
In the following situations, the warning message may not be displayed even if vehicle-to- vehicle distance decreases:
●When the speed of the preceding vehicle matches or exceeds your vehicle speed
●When the preceding vehicle is traveling at an extremely slow speed
●Immediately after the cruise control speed was set
●When depressing the accelerator pedal
■The LDA (Lane Departure Alert) lane departure warning function (if equipped)
In the following situations, the warning message will not be displayed even if a lane line is crossed.
●When the vehicle speed deviates from the operating range of the LDA system func-tions
●When the lane lines cannot be recognized
■Conditions that the tire pressure warning system may not function properly
P. 489
■Reset the message indicating maintenance is required
Make sure to reset the oil change system. ( P. 476)
■Warning buzzer
P. 541
Page 580 of 640
5808-2. Steps to take in an emergency
RC300h_EE(OM24740E)
Ensure that the shift lever is in P and depress the brake pedal.
Touch the Lexus emblem side of the
electronic key to the power switch.
When the electronic key is detected, a buzzer sounds and the power switch willturn to ON mode.
When the smart entry & start system is deactivated in customization setting, thepower switch will turn to ACCESSORY
mode.
Firmly depress the brake pedal and check that is shown on the multi-
information display.
Press the power switch.
In the event that the hybrid system still cannot be started, contact any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional.
Starting the hybrid system
1
2
3
4
Page 587 of 640

5878-2. Steps to take in an emergency
8
When trouble arises
RC300h_EE(OM24740E)
●The hybrid system coolant temperature gauge (P. 115) is in the red zone or
a loss of hybrid system power is experi enced. (For example, the vehicle speed
does not increase.)
●“Engine Coolant High Temperature” or “Hybrid System Overheat Output
Power is limited” is shown on the multi-information display.
●Steam comes out from under the hood.
■If the needle of the engine coolant temperature gauge enters the red zone
or “Engine Coolant High Temperature” is shown on the multi-information
display
Stop the vehicle in a safe place and turn off the air conditioning system, and
then stop the hybrid system.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the hybrid system has
cooled down sufficiently, inspect
the hoses and radiator core (radi-
ator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant leaks,
immediately contact any autho- rized Lexus dealer or repairer, oranother duly qualified and
equipped professional.
If your vehicle overheats
The following may indicate that your vehicle is overheating.
Correction procedures
1
2
3
1
2
Page 589 of 640
5898-2. Steps to take in an emergency
8
When trouble arises
RC300h_EE(OM24740E)
■If “Hybrid System Overheat Output Power is limited” is shown on the multi-
information display
Stop the vehicle in a safe place.
Stop the hybrid system and carefully lift the hood.
After the hybrid system has
cooled down, inspect the hoses
and radiator core (radiator) for
any leaks.
Radiator
Cooling fans
If a large amount of coolant leaks,
immediately contact any autho-
rized Lexus dealer or repairer, or
another duly qualified and
equipped professional.
The coolant level is satisfactory if
it is between the “F” and “L” lines
on the reservoir.
Reservoir
“F”
“L”
Add coolant if necessary.
Water can be used in an emergency
if coolant is unavailable.
1
2
3
1
2
4
1
2
3
5
Page 590 of 640

5908-2. Steps to take in an emergency
RC300h_EE(OM24740E)
Start the hybrid system and check for the multi-information display.
If the message does not disappear:
Stop the hybrid system and contact any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
If the message is not displayed:
Have the vehicle inspected at the nearest authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
WARNING
■When inspecting under the hood of your vehicle
Observe the following precautions. Failure to do so may result in serious injury such as burns.
●If steam is seen coming from under the h ood, do not open the hood until the steam has subsided. The engine compartment may be very hot.
●After the hybrid system has been turned off, check that the “READY” indicator is off.
When the hybrid system operating, the ga soline engine may automatically start, or the cooling fan may suddenly operate even if the gasoline engine stops. Do not touchor approach rotating parts such as the belt and fan, which may lead to fingers or
clothing (especially a tie, a scarf or a mu ffler) getting caught, resulting in serious injury.
6
●Do not loosen the coolant reservoir caps orradiator cap while the hybrid system and radi-
ator are hot. High temperature steam or coolant couldspray out.
Page 608 of 640

6089-2. Customization
RC300h_EE(OM24740E)
Some function settings are changed simultaneously with other functions being
customized. Contact any authorized Lexu s dealer or repairer, or another duly
qualified and equipped professional.
Settings that can be changed using the Remote Touch or Lexus Display Audio
controller
Settings that can be changed using the meter control switches
Settings that can be changed by any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional
Definition of symbols: O = Available, — = Not available
■Gauges, meters and multi-information display ( P. 110, 115, 121)
Customizable features
1
2
3
Function*1Default settingCustomized setting
Language*2English
French
—O—
German
Spanish
Italian
Russian
Units*2km (L/100 km)km (km/L)OO—miles (MPG)
EV indicatorON
(Self-lighting)OFF—O—
switch settings*3Drive
information 1Desired status screen
*4—O—
Drive information 1
Current fuel economy
*5—O—Average fuel economy
(after reset)
Drive information 2
Distance
(driving range)
*5—O—Average vehi- cle speed
(after reset)
Pop-up displayONOFF—O—
123
Page 609 of 640

609
9
9-2. Customization
Vehicle specifications
RC300h_EE(OM24740E)
*1: For details about each function: P. 126
*2: The default setting varies according to country.
*3:Except F SPORT models
*4: Some status screens cannot be registered (indicated on multi-information display).
*5: 2 of the following items: current fuel consumption, average fuel economy (after reset),
average fuel economy (after start), average fuel economy (after refuel), average vehi-
cle speed (after reset), average vehicle speed (after start), elapsed time (after reset),
elapsed time (after start), distance (driving range), distance (after start), blank.
*6: F SPORT models
*7: The customized setting varies according to country.
Accent color*3Color 1Color 2OO—
Tachometer settingsON (Self- changing)
Hybrid System Indi-cator (Always)—O—Tachometer
(Always)
Needle*6BlueRed—O—White
Speed indicator*6OFF
50 to 200 km/h*7
—O—50 to 160 km/h (30 to 100 mph)*7
REV indicator*64000 r/min
2000 to 6000 r/min—O—
OFF
REV peak*6ONOFF—O—
Function*1Default settingCustomized setting123
Page 623 of 640
623What to do if... (Troubleshooting)
RC300h_EE(OM24740E)
●Is the message displayed on the multi-information display?
Check the message on the multi-information display. ( P. 542)
●When a warning light turns on or a warning message is displayed, refer to
P. 537, 542.
●Stop the vehicle in a safe place and repair the flat tire temporarily with the
emergency tire puncture repair kit. ( P. 563)
●Try the procedure for when the vehicle becomes stuck in mud, dirt, or snow.
( P. 592)
A warning buzzer sounds when leaving the vehicle
A warning light turns on or a warning message is displayed
When a problem has occurred
If you have a flat tire
The vehicle becomes stuck