engine LEXUS RCF 2018 User Guide

78 1-1. For safe use
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)Exhaust gas precautions Harmful substance to the human body is included in exhaust gases if inhaled. WARNING
Exhaust gases include harmful carbon monoxi de (CO), which is colorless and odorless.
Observe the following precautions.
Failure to do so may cause exhaust gases enter the vehicle and may lead to an accident
caused by light-headedness, or may lead to death or a serious health hazard.■
Important points while driving ●
Keep the trunk lid closed. ●
If you smell exhaust gases in the vehicle even when the trunk lid is closed, open the
windows and have the vehicle inspected at your Lexus dealer as soon as possible.■
When parking ●
If the vehicle is in a poorly ventilated area or a closed area, such as a garage, stop the
engine. ●
Do not leave the vehicle with the engine on for a long time.
If such a situation cannot be avoided, park the vehicle in an open space and ensure
that exhaust fumes do not enter the vehicle interior. ●
Do not leave the engine running in an area with snow build-up, or where it is snowing.
If snowbanks build up around the vehicle while the engine is running, exhaust gases
may collect and enter the vehicle. ■
Exhaust pipe
The exhaust system needs to be checked periodically. If there is a hole or crack caused
by corrosion, damage to a joint or abnormal exhaust noise, be sure to have the vehicle
inspected and repaired by your Lexus dealer.

79 1
For safety and security
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U) 1-2. Theft deterrent system
The indicator light flashes after the
engine switch has been turned off to
indicate that the system is operating.
The indicator light stops flashing after
the engine switch has been turned to
ACCESSORY or IGNITION ON
mode to indicate that the system has
been canceled. ■
System maintenance
The vehicle has a maintenance-free type engine 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 vehicleEngine immobilizer system The vehicle’s keys have built-in tran sponder chips that prevent the engine
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.
NOTICE ■
To ensure the system operates correctly
Do not modify or remove the system. If mo dified or removed, the proper operation of
the system cannot be guaranteed.

80 1-2. Theft deterrent system
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)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 trunk is opened in any way other th an using the entry function or wireless
remote control. ●
The hood is opened.
Close the doors, trunk and hood, and
lock both side doors. The system will be
set automatically 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. ●
Open the trunk using the entry func tion or wireless remote control.●
Turn the engine switch to ACCESSOR Y or IGNITION ON mode, or start
the engine. (The alarm will be deactivat ed or stopped after a few seconds.)■
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 (if equipped) are closed before the alarm is set. ●
No valuables or other personal items are left in the vehicle.Alarm The alarm
Setting the alarm system
Deactivating or stopping the alarm

872. Instrument cluster
2
Instrument cluster
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)* 1
: These lights turn on when the engine switch is turned to IGNITION ON mode to
indicate that a system check is being performed. They will turn off after the engine is
started, or after a few seconds. There may be a malfunction in a sy stem if a light does
not come on, or turn off. Have the ve hicle inspected by your Lexus dealer.
* 2
: This light illuminates on the center panel.
The indicators inform the driver of the op erating state of the vehicle’s various sys-
tems. * 1
Tire pressure warning light
(  P. 455)
Indicators Turn signal indicator
(  P. 221) Cruise control “SET” indica-
tor (  P. 268)
(U.S.A.)
Headlight indicator
(  P. 225) (if equipped)
Gear Shift Indicator
(  P. 217)
(Canada)
Tail light indicator
(  P. 225)
(if equipped)
Intuitive parkin g assist indi-
cator (  P. 280)
Headlight high beam indi-
cator (  P. 226)
* 1, 2
Slip indicator (  P. 314)
Automatic High Beam indi-
cator (  P. 228) * 1, 3
VSC OFF indicator
(  P. 315)
(if equipped)
Front fog light indicator
(  P. 232) * 1, 8
TRAC OFF indicator
(  P. 314)
Cruise control indicator
(  P. 268) LDA (Lane Departure
Alert) indicator (  P. 261)
Dynamic radar cruise con-
trol indicator (  P. 268) LDA (Lane Departure
Alert) indicator (  P. 261)

892. Instrument cluster
2
Instrument cluster
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
RC F
●
TVD (Torque Vectoring Differential) control mode indicators (RC F)
* 1
: These lights turn on when the engine switch is turned to IGNITION ON mode to
indicate that a system check is being performed. They will turn off after the engine is
started, or after a few seconds. There may be a malfunction in a sy stem if a light does
not come on, or turn off. Have the ve hicle inspected by your Lexus dealer.
* 2
: The light flashes to indicate that the system is operating.
* 3
: The light comes on when the system is turned off.
* 4
: In order to confirm operation, the BSM ou tside rear view mirror indicators illuminate
in the following situations:
• When the engine switch is turned to IGNITION ON mode while the BSM main
switch is turned on.
• When the BSM main switch is turned on while the engine switch is in IGNITION
ON mode.
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.
* 5
: When the outside temperature is approximately 37  F (3  C) or lower, the indicator
will flash for approximately 10 seconds, then stay on.
* 6
: This light illuminates on the outside rear view mirrors.
* 7
: This light illuminates on the center panel.
* 8
:RC F “NORMAL” indicator
(  P. 301) Eco drive mode indicator
(  P. 301)
“SPORT S” indicator
(  P. 301) “SPORT S+” indicator
(  P. 301)
Snow mode indicator
(  P. 214) “CUSTOM” indicator
(  P. 301)
(if equipped)
“STANDARD” indicator
(  P. 310) (if equipped)
“SLALOM” indicator
(  P. 310)
(if equipped)
“TRACK” indicator
(  P. 310)

90 2. Instrument cluster
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)WARNING ■
If a safety system warnin g light does not come on
Should a safety system light such as the ABS and SRS warning light not come on when
you start the engine, this could mean that these systems are not available to help pro-
tect you in an accident, which could result in death or serious injury. Have the vehicle
inspected by your Lexus dealer immediately if this occurs.

92 2. Instrument cluster
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U) 
Main meter moved to the right
The units used on the meters may differ depending on the target region.
Engine coolant temperature gauge Displays the engine coolant temperature
Tachometer Displays the engine speed in revolutions per minute
F SPORT models: When sport mode is select ed for the driving mode, the periphery
of the tachometer will change color and th e scale of the tachometer will be empha-
sized.
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 temperature
is 37°F (3°C) or lower.
Multi-information display Presents the driver with a variety of vehicle data (  P. 103)
Displays warning me ssages in case of a malfunction (  P. 460)
Clock Time displayed on the clock can be adjust ed on of the multi-information display.
(  P. 111)
Speedometer
Fuel gauge
Shift position/shift range/gear position (  P. 213)
Odometer and trip meter display (  P. 115)1
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932. Instrument cluster
2
Instrument cluster
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)■
Speed indicator (F SPORT models)
When the vehicle reaches a set
speed, indicators will be displayed
on both sides of the displayed speed
unit. • The indicators will be displayed in
yellow (correspondi ng to a speed set
by a user) or red (fixed at 100 mph
[160 km/h])
* .
• The desired vehicle speed at which
the speed indicator will begin to be
displayed can be set in of the
multi-information display. (  P. 111)
• The default setting of the indicator is off. This setting can be changed in of the
multi-information display. (  P. 111)
* : Always observe the legal speed limi t when driving on public roads.■
Rev indicator (F SPORT models)
When the engine speed reaches a
set speed, a ring-shaped indicator
will be displayed on the tachometer. The desired engine speed at which
the Rev indicator will begin to be dis-
played can be set on of the multi-
information display. ( 
P. 111 )
■
Rev peak (F SPORT models)
The engine speed reaches or
exceeds 5000 rpm, an afterimage
of the tachometer will be displayed
at the highest engine speed for
approximately 0.5 seconds.

952. Instrument cluster
2
Instrument cluster
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)■
The meters and display illuminate when
The engine switch is in IGNITION ON mode. ■
Instrument panel brightness adjustment
The instrument panel brightness levels when the tail lights are on and off can be adjusted
individually. However, when the surroundings are bright (dayti me, etc.), turning on the tail
lights will not change the inst rument panel brightness. At th is time, any adjustments made
to the instrument panel brightness levels will be applied to both settings at once. ■
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 system may be malfunctioning.
Take your vehicle to your Lexus dealer. ■
Pop-up display ●
In some situations, such as when a switch operation is performed, a pop-up display will
be temporarily displayed on the multi-info rmation display or the odometer/trip meter
screen (F SPORT models). ●
Some pop-up displays can be set on/off. (  P. 111)■
Customization
The meter display can be customized on the multi-information display. (  P. 111)
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. 526)

98 2. Instrument cluster
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)Multi-information display Presents the driver with a variety of vehicle data (  P. 118)
Displays warning me ssages in case of a malfunction (  P. 460)
Fuel gauge
Engine coolant temperature gauge Displays the engine coolant temperature. If the engine coolant temperature gauge
indicator ( ) enters the red zone, a buzzer will sound and the indicator will turn red
and start flashing. Also, a warning message will be displayed.
Engine oil temperature gauge Displays the engine oil temperature. If the engine oil temperature gauge indicator
( ) enters the red zone, the indicator will turn red and start flashing.
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 temperature
is 37°F (3°C) or lower.
Tachometer Displays the engine speed in revolutions per minute
Digital speedometer
Analog speedometer
Shift position/shift range/gear position (  P. 213)
Odometer and trip meter display Odometer:
Displays the total distance the vehicle has been driven
Trip meter:
Displays the distance the vehi cle has been driven since the meter was last reset. Trip
meters “A” and “B” can be used to record and display different distances inde-
pendently.
Eco driving meter Displays the vehicle acceleration. The more rapidly the vehicle is accelerated, the
lower the number of blue segments displayed, indicating that your driving is less eco-
friendly. This meter is designed as a guideline to show the eco-friendliness of your
driving. 1
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