light LEXUS RC300 2018 Owner's Manual

52 1-1. For safe use
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)■
Adult
* 1
■
Child
* 4Condition and operation in the front passenger occupant classification
system Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights “AIR BAG ON”
SRS warning light Off
Seat belt reminder light Off
* 2
or flashing
* 3
Devices Front passenger airbag
ActivatedSide airbag
on the front passenger seat
Curtain shield airbag
in the front passenger side
Front passenger knee airbag
Front passenger’s seat belt pretensioner
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights “AIR BAG OFF” or
“AIR BAG ON”
* 4
SRS warning light Off
Seat belt reminder light Off
* 2
or
flashing
* 3
Devices Front passenger airbag Deactivated or
activated
* 4
Side airbag
on the front passenger seat
Activated
Curtain shield airbag
in the front passenger side
Front passenger knee airbag Deactivated or
activated
* 4
Front passenger’s seat belt pretensioner Activated

531-1. For safe use
1
For safety and security
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)■
Child restraint system with infant
* 5
■
Unoccupied Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights “AIR BAG OFF”
* 6
SRS warning light Off
Seat belt reminder light Off
* 2
or
flashing
* 3
Devices Front passenger airbag Deactivated
Side airbag
on the front passenger seat
Activated
Curtain shield airbag
in the front passenger side
Front passenger knee airbag Deactivated
Front passenger’s seat belt pretensioner Activated
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights “AIR BAG OFF”
SRS warning light
Off
Seat belt reminder light
Devices Front passenger airbag Deactivated
Side airbag
on the front passenger seat
Activated
Curtain shield airbag
in the front passenger side
Front passenger knee airbag Deactivated
Front passenger’s seat belt pretensioner
Activated

54 1-1. For safe use
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)■
There is a malfunction in the system
* 1
: The system judges a person of adult size as an adult. When a smaller adult sits in
the front passenger seat, the system ma y not recognize him/her as an adult
depending on his/her physique and posture.
* 2
: In the event the front passenger is wearing a seat belt.
* 3
: In the event the front passenger does not wear a seat belt
* 4
: For some children, child in seat, child in booster seat or child in convertible seat,
the system may not recognize him/her as a child. Factors which may affect this can
be the physique or posture.
* 5
: Never install a rear-facing child restraint system on the front passenger seat. A for-
ward-facing child restraint sy stem should only be inst alled on the front passenger
seat when it is unavoidable. (  P. 58)
* 6
: In case the indicator light is not illuminated, consult this manual on how to install the
child restraint system properly. (  P. 60)Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights “AIR BAG OFF”
SRS warning light
On
Seat belt reminder light
Devices Front passenger airbag Deactivated
Side airbag
on the front passenger seat
Activated
Curtain shield airbag
in the front passenger side
Front passenger knee airbag Deactivated
Front passenger’s seat belt pretensioner Activated

551-1. For safe use
1
For safety and security
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)WARNING ■
Front passenger occupant classification system precautions
Observe the following precau tions regarding the front passenger occupant classifica-
tion system.
Failure to do so may cause death or serious injury. ●
Wear the seat belt properly. ●
Make sure the front passenger’s seat belt plate has not been left inserted into the
buckle before someone sits in the front passenger seat.●
Make sure the “AIR BAG OFF” indicator li ght is not illuminated when using the seat
belt extender for the front passenger seat. If the “AIR BAG OFF” indicator light is illu-
minated, disconnect the extender tongue from the seat belt buckle, and reconnect
the seat belt. Reconnect the seat belt extender after making sure the “AIR BAG ON”
indicator light is illuminated. If you use the seat belt extender while the “AIR BAG
OFF” indicator light is illuminated, the SRS airbags for the front passenger may not
activate, which could cause death or seri ous injury in the event of a collision.●
Do not apply a heavy load to the front pa ssenger seat or equipment (e.g. seatback
pocket). ●
Do not put weight on the front passenger seat by putting your hands or feet on the
front passenger seat seatback from the rear passenger seat.●
Do not let a rear passenger lift the front passenger seat with their feet or press on the
seatback with their legs. ●
Do not put objects under the front passenger seat.

56 1-1. For safe use
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)WARNING ■
Front passenger occupant classification system precautions ●
Do not recline the front passeng er seatback so far that it touches a rear seat. This may
cause the “AIR BAG OFF” indicator light to be illuminated, whic h indicates that the
SRS airbags for th e front passenger will no t activate in the even t of a severe accident.
If the seatback touches the rear seat, return the seatback to a position where it does
not touch the rear seat. Keep the front passenger seatback as upright as possible
when the vehicle is moving. Reclining the seatback excessively may lessen the effec-
tiveness of the seat belt system. ●
If an adult sits in the fron t passenger seat , the “AIR BAG ON” indicator light is illumi-
nated. If the “AIR BAG OFF” indicator is illuminated, ask the passenger to sit up
straight, well back in the seat, feet on the floor, and with the seat belt worn correctly. If
the “AIR BAG OFF” indicator still remain s illuminated, either ask the passenger to
move to the rear seat, or if that is not possible, move the fron t passenger seat fully
rearward. ●
When it is unavoidable to in stall a forward-facing child re straint system on the front
passenger seat, install the ch ild restraint system on the front passenger seat in the
proper order. (  P. 60)●
Do not modify or remove the front seats. ●
Do not kick the front passenger seat or subject it to severe impact. Otherwise, the
SRS warning light may come on to indica te a malfunction of the front passenger
occupant classification system. In this cas e, contact your Lexus dealer immediately.●
Child restraint systems insta lled on the rear se at should not contact the front seat-
backs. ●
Do not use a seat accessory, such as a cushion and seat cover, that covers the seat
cushion surface. ●
Do not modify or replace the upholstery of the front seat. ●
Do not place anything between the cons ole box and front passenger seat. Other-
wise, the system may not de tect the front passenger pr operly, leading to improper
operation of the airbags. ●
Adjust the front passenger seat so that the head restraint does not touch the ceiling. If
the head restraint is left in contact with the ceiling, the system may not detect the front
passenger properly, leading to improper operation of the airbags.

631-1. For safe use
1
For safety and security
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)WARNING ■
When installing a child restraint system
Observe the following when installing child re straint system to the front passenger seat
if it is unavoidable. The front passenger SR S airbag inflates with considerable speed
and force that if not observed may lead to death or serious injury to the child.●
Never install a rear-facing child restraint sy stem on the front passenger seat even if
the “AIR BAG OFF” indicator lig ht is illuminated. In the even t of an accident, the force
of the rapid inflation of the front passenger airbag can cause death or serious injury to
the child if the rear-facing ch ild restraint system is inst alled on the front passenger
seat. ●
A forward-facing child restraint system ma y be installed on the front passenger seat
only when it is unavoidable. A child restraint system that requires a top tether strap
should not be used in the front passenger seat since there is no top tether strap
anchor for the front passenger seat.
●
Do not allow the child to lean his/her head or any part of his/her body against the
door or the area of the seat, front pillars or roof side rails from which the SRS side air-
bags or SRS curtain shield airbags deploy even if the child is seated in the child
restraint system. It is dangerous if the SRS side and curtain shield airbags inflate, and
the impact could cause death or serious injury to the child. ●
When a booster seat is installed, always en sure that the shoulder belt is positioned
across the center of the child’s shoulder. The belt should be kept away from the child’s
neck, but not so that it coul d fall off the child’s shoulder.●
A forward-facing child restraint system may
be installed on the front passenger seat only
when it is unavoidable. When installing a for-
ward-facing child restrain t system on the front
passenger seat, adjust the seatback to the
most upright position, move the seat to the
rearmost position, and raise the seat to the
highest position, even if the “AIR BAG OFF”
indicator light is illuminated.
If the head restraint interferes with the instal-
lation of the child re straint system, and the
head restraint can be removed, remove the
head restraint.

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

83
Instrument cluster
2
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U) 2. Instrument cluster
Warning lights and
indicators ....................................... 84
Gauges and meters
(RC350/RC300)......................91
Gauges and meters (RC F) ...... 96
Multi-information display
(RC350/RC300).................. 103
Multi-information display
(RC F) .............................................118
Fuel consumption
information ................................. 135