2018 LEXUS RC300 ignition

308 4-5. Using the driving support systems
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)Operate the active rear wing switch to raise/retract the active rear wing manu-
ally. (The active rear wing retracts when it is raised and raises when retracted.) ■
Operation by switch
* : Press and hold the switch until the indicator tu rns off. If the switch is released while the
active rear wing is moving, it will retu rn to the raised position automatically.■
The active rear wing can be operated when ●
The engine switch is in IGNITION ON mode. ●
The trunk is closed. ■
Conditions which stop the operation of the active rear wing
In the following situatio ns operation of the acti ve rear wing will stop:●
The engine switch is turned off whil e the active rear wing is operating.●
The trunk is opened while the active rear wing is operating. ●
The raising operation of the active rear wing is interrupted by an object, etc.●
The active rear wing is operated in an unusua l manner causing it to stop at an irregular
position.
In such cases, pressing the acti ve rear wing switch will fully raise the active rear wing. Or,
begin driving the vehicle and the active rear wing will raise automatically when the vehi-
cle speed reaches 16 mph (25 km/h). ■
Restoring automatic operatio n after the active rear wing is operated manually
If the active rear wing is operated manua lly, automatic operation will resume according
to the vehicle speed. ■
When there is a malfunction in the system
A warning message will be displayed on the multi-information display. (  P. 478)■
Customization
The active rear wing can be held at the raised position or retracted position.
(Customizable features:  P. 569)Manual operation Vehicle speed Up Down
0 mph (0 km/h)
(vehicle stopped) Press Press and hold
*Approximately 0 – 12 mph
(0 – 20 km/h) Operation not possible Operation not possible
Approximately 12 – 80
mph (20 – 130 km/h) Press Press
Approximately 80 mph
(130 km/h) or more Operation not possible Operation not possible

310 4-5. Using the driving support systems
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)With the engine switch in IGNITION
ON mode, pressing the TVD switch
changes the TVD control mode. The current TVD control mode will be
displayed on the meters.
STANDARD mode
This is the default mode and pro-
vides an optimum balance of driving
agility and stability.
SLALOM mode
This mode emphasizes enhanced
steering response.
TRACK mode
This mode emphasizes stability for
high speed sporty driving.
The multi-information display shows the di stribution of driving force between the
right and left rear wheels. (  P. 118)TVD (Torque Vectoring Differential) 
 : If equippedThe TVD system distributes driving force (torque) between the right and left
rear wheels automatically. This syst em contributes to enhanced steering
response while cornering and increased traction when exiting a corner, pro-
viding an agile driving experience.
Changing TVD control modes 1
2
3
TVD control status on the multi-information display

3114-5. Using the driving support systems
4
Driving
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)■
Automatic cancelation of the selected TVD control mode
SLALOM and TRACK mode are canceled when the engine switch is turned off. When
the engine switch is turned to IGNITION ON mode, the TVD system will be in STAN-
DARD mode. ■
Automatic disabling of the TVD system
If a malfunction is de tected in the TVD system, a warn ing message will be displayed on
the multi-information display (  P. 474) and the TVD system will be disabled automati-
cally. If the system is disabled, driving force will not be distributed by the TVD but through
normal differential operation. ■
To protect the system
The TVD fluid temperature may become excessively high when driving for a long time
under extremely high load conditions. In th is case, a warning messa ge will be displayed
on the multi-information display. (  P. 474)
WARNING ■
Cautions regarding the use of the system
The driver is solely responsible for safe driv ing. Do not overly rely on the TVD system.
Always drive safely, taking care to observe your surroundings.

3415-1. Using the air conditioning system
5
Interior features
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)■
Registering air conditioning settings to elec tronic keys (vehicles with driving position
memory) ●
Unlocking the vehicle using an electronic ke y and turning the engine switch to IGNI-
TION ON mode will recall that key's re gistered air conditioning settings. ●
When the engine switch is tu rned off, the current air cond itioning settings will automat-
ically be registered to the electronic key that was used to unlock the vehicle. ●
The system may not operate correctly if more th an one electronic key is in the vicinity or
if the smart access system with push-button start is used to unlock a passenger door. ●
The doors that can recall the air conditioning setting* when unlocked using the smart
access system with push-button start can be changed. For details, contact your Lexus
dealer.
*: The doors that can recall the driving posi tion memory are change d at the same time.■
Using automatic mode
Fan speed is adjusted automatically according to the temperature setting and the ambi-
ent conditions.
Therefore, the fan may stop for a while until wa rm or cool air is ready to flow immediately
after is pressed or “AUTO” is selected. ■
Using the voice command system
Air conditioning system can be operated using voic e commands. For details, refer to the
“NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”. ■
Fogging up of the windows
The windows will easily fog up when the hu midity in the vehicle is high. Turning
(“A/C”) on will dehumidify the air from the outlets and defog the wi ndshield effectively.●
If you turn (“A/C”) off, the windows may fog up more easily.●
The windows may fog up if the recirculated air mode is used. ■
Outside/recirculated air mode ●
When driving on dusty roads such as tunnels or in heavy traffic, set the outside/recircu-
lated air mode button to the recirculated air mode. This is effective in preventing out-
side air from enteri ng the vehicle interior. During cooling operation, setting the
recirculated air mode will also cool the vehicle interior effectively. ●
Outside/recirculated air mode may automa tically switch depending on the tempera-
ture setting or the inside temperature. ■
When the outside temperature exceeds 75  F (24  C) and the air conditioning system
is on ●
In order to reduce the air co nditioning power consumption, the air conditioning system
may switch to recirculated air mode automa tically. This may also reduce fuel consump-
tion. ●
Recirculated air mode is selected as a defaul t mode when the engine switch is turned to
IGNITION ON mode. ●
It is possible to switch to outside air mode at any time by pressing .

344 5-1. Using the air conditioning system
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)Turn the heated steering wheel on/off The indicator light comes on when the
heated steering wheel is operating.
●
The heated steering wheel can be used wh en the engine switch is in IGNITION ON
mode. ●
The heated steering wheel will automati cally turn off after about 30 minutes.Heated steering wheel 
/seat heaters 
/seat ventila-
tors 
 : If equippedHeated steering wheel and seat heaters heat the side grips of the steering
wheel and seats, respectively. Seat vent ilators maintain good ventilation using
a fan built into the seat. WARNING ●
Care should be taken to prevent injury if anyone in the following categories comes in
contact with the steering wheel or seats when the heater is on:
• Babies, small children, the elderly, the sick and the ph ysically challenged
• Persons with sensitive skin
• Persons who are fatigued
• Persons who have taken alcohol or drugs that induce sleep (sleeping drugs, cold
remedies, etc.) ●
Observe the following precautions to prevent the minor burns or overheating
• Do not cover the seat with a blanket or cushion when using the seat heater.
• Do not use seat heater more than necessary.
NOTICE ●
Do not put heavy objects that have an unev en surface on the seat and do not stick
sharp objects (needles, nails, etc.) into the seat. ●
To prevent battery discharge, do not us e the functions when the engine is off.
Heated steering wheel

3455-1. Using the air conditioning system
5
Interior features
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)Each time the switch is pressed, the
intensity of the seat heater changes and
the level indicator lights (amber) light
as follows:
Hi (3 segments lit)  Mid (2 segments
lit)  Lo (1 segment lit)  Off■
The seat heaters can be used when
The engine switch is in IGNITION ON mode. ■
Seat heater timer control
To enable seat heater timer control, press and hold the driver and front passenger seat
heater switches at the same time when the vehicle is stopped until a buzzer sounds once.
If a seat heater is turned on while seat heater timer control is enabled, the intensity of the
seat heater will automa tically change from Hi  Mid  Lo.
The timing of the change in seat heater in tensity differs depending on the temperature
inside the cabin, etc. when the seat heater is operating.
To disable seat heater timer control, press and hold the driver and front passenger seat
heater switches at the same time until a buzzer sounds twice.Seat heaters Type A Type B

346 5-1. Using the air conditioning system
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)Each time the switch is pressed, the
intensity of the seat ventilator changes
and the level indicator lights (green)
light as follows:
Hi (3 segments lit)  Mid (2 segments
lit)  Lo (1 segment lit)  Off■
The seat ventilators can be used when
The engine switch is in IGNITION ON mode. ■
Air conditioning system-linke d control mode (RC350/RC300)
When a seat ventilator is set to Hi, the fa n speed of the seat ventilator may increase
according to the fan speed of the air conditioning system.Seat ventilators

3515-3. Using the storage features
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U) 5
Interior features Open (press the button)
Unlock with the mechanical key
Lock with the mechanical key ●
The glove box light turns on when the engine switch is in ACCESSORY or IGNITION
ON mode. ●
The trunk opener main switch is located in the glove box. (  P. 152)
Push the knob. Lift by hand to fully open the console
box.Glove box 1
2
3
●
The insert inside the glove box can be
removed.
Console box