2021 LEXUS RCF ECU

983-2. Opening, closing and locking the doors and trunk
■If the smart access system with
push-button start or the wireless remote
control does not operate properly
Use the mechanical key to unlock the trunk.
(  P.332)
Replace the key battery with a new one if it
is depleted. ( P.283)
■If a symbol indicating the trunk opens is
shown on the multi-information display
 P.94
■Customization
Some functions can be customized.
(  P.360)
To protect luggage stored in the trunk
against theft, the luggage security sys-
tem can be set to on.
1 Close the inside trunk door. (if
equipped) ( P.228)
2 To disable the trunk opener, turn
the main switch in the glove box off.
On
Off
When the main switch is off, the trunk lid
cannot be opened even with the wireless
remote control or entry function.
■When leaving a key to the vehicle with a
parking attendant
 P.91
■Antenna location
Antennas outside the cabin
Antennas inside the cabin
Antenna inside the trunk
Antenna outside the trunk
Luggage security system
A
B
Smart access system with
push-button start
The following operations can be
performed simply by carrying the
electronic key (including the card
key) on your person, for example in
your pocket. The driver should
always carry the electronic key.
 Locks and unlocks the doors
( P.92)
 Opens the trunk ( P.96)
 Starts the engine ( P.128)
A
B
C
D

1013-2. Opening, closing and locking the doors and trunk
3
Before driving
the doors detecting the electronic key
can be used to unlock the vehicle.
●Even if the electronic key is not inside the
vehicle, it may be possible to start the
engine if the electronic key is near the
window.
●The doors may unlock or lock if a large
amount of water spla shes on the door
handle, such as in the rain or in a car
wash, when the electronic key is within
the effective range. (The doors will auto-
matically be locked after approximately
60 seconds if the d oors are not opened
and closed.)
●If the wireless remote control is used to
lock the doors when the electronic key is
near the vehicle, there is a possibility that
the door may not be unlocked by the
entry function. (Use the wireless remote
control to unlock the doors.)
●Touching the door lock or unlock sensor
while wearing gloves may prevent lock or
unlock operation.
●When the lock operation is performed
using the lock sensor, recognition signals
will be shown up to two consecutive
times. After this, no recognition signals
will be given.
●If the door handle becomes wet while the
electronic key is within the effective
range, the door may lock and unlock
repeatedly. In this case, follow the follow-
ing correction procedures to wash the
vehicle:
• Place the electronic key in a location 6 ft. (2 m) or more away from the vehicle.
(Take care to ensure that the key is not
stolen.)
• Set the electronic key to battery-saving
mode to disable the smart access system
with push-button start. ( P.100)
●If the electronic key is inside the vehicle
and a door handle becomes wet during a
car wash, a message may be shown on
the multi-information display and a
buzzer will sound outside the vehicle. To
turn off the alarm, lock both side doors.
●The lock sensor may not work properly if
it comes into contact with ice, snow, mud,
etc. Clean the lock sensor and attempt to
operate it again.
●A sudden handle operation or a handle
operation immediately after entering the
effective range may prevent the doors
from being unlocked. Touch the door
unlock sensor and check that the doors
are unlocked before pulling the door
handle again.
●Unlocking the vehicle may take more
time if another electronic key is within the
effective range.
■When the vehicle is not driven for
extended periods
●To prevent theft of the vehicle, do not
leave the electronic key within 6 ft. (2 m)
of the vehicle.
●The smart access system with push-but-
ton start can be deactivated in advance.
■To operate the system properly
●Make sure to carry the electronic key
when operating the system. Do not get
the electronic key too close to the vehicle
when operating the system from the out-
side of the vehicle.
Depending on the position and holding
condition of the electr onic key, the key may
not be detected correctly and the system
may not operate properly. (The alarm may
go off accidentally, or the door lock pre-
vention function may not operate.)
●Do not leave the electr onic key inside the
trunk.
The key confinement prevention function
may not operate, depending on the loca-
tion of the key (close to a spare tire [if
equipped], the inside edge of the trunk),
conditions (inside a metal bag, close to
metallic objects) an d the radio waves in
the surrounding area. ( P.98)
■If the smart access system with
push-button start does not operate
properly
●Locking and unloc king the doors and
opening the trunk: P.332
●Starting the engine:  P.333
■Customization
Some functions can be customized.
(  P.360)

1043-3. Adjusting the seats
■Entering/exiting the rear seat
1 Pull the lever.
The front seat will lower automatically.
2Fold the seatback completely for-
ward.
The front seat will move forward automati-
cally.
■Returning the front seat to its origi-
nal position
Move the seatback backward until it
locks. The front seat will return to its
original position automatically.
■Lever-operated “Front, Fold & Return”
seat
●After the front seat is moved forward by
operating the “Front, Fold & Return” seat
lever, if a power seat adjusting switch or a
driving position memory switch is
pressed, the front seat will not return to its
original position even if the front seatback
is moved backward until it locks.
●The lever-operated “Front, Fold &
Return” seat will not operate in the follow- ing situations:
• The front seat belt of the seat to be oper- ated is fastened.
• The engine switch is in IGNITION ON mode and the shift lever is in a position
other than P (driver’s seat only).
●Operation of the lever-operated “Front,
Fold & Return” seat will stop in the follow-
ing situations:
• A power seat adjusting switch or a driv- ing position memory switch is pressed.
• The front seat belt of the seat which is operating is fastened.
• The engine switch is in IGNITION ON
mode and the shift lever is moved to a
position other than P (driver’s seat only).
■Jam protection function
While the lever-operat ed “Front, Fold &
Return” seat is operatin g, if an object is
stuck either in front of or behind the front
seat, the front seat will stop and then move
in the opposite direction slightly.
WARNING
■Lever-operated “Front, Fold &
Return” seat
●Before operating th e lever-operated
“Front, Fold & Return” seat, ensure that
any surrounding passengers or objects
will not contact the seat.
●Make sure the seat back is locked
securely before driving.
●Never operate the lever-operated
“Front, Fold & Return” seat while the
vehicle is moving.
■Jam protection function
Do not use a hand, foot, or any other part
of your body to intentionally activate the
jam protection function.

1083-4. Adjusting the steering wheel and mirrors
3-4.Adjusting the steering wheel and mirrors
Manual type
1 Hold the steering wheel and push
the lever down.
2 Adjust to the ideal position by mov-
ing the steering wheel horizontally
and vertically.
After adjustment, pull the lever up to
secure the steering wheel.
Power type
Operating the switch moves the steer-
ing wheel in the following directions: 1
Up
2 Down
3 Toward the driver
4 Away from the driver
■The steering wheel can be adjusted
when (power type)
The engine switch is in ACCESSORY or
IGNITION ON mode
*.
*: If the driver’s seat belt is fastened, the
steering wheel can be adjusted regard-
less of engine switch mode.
■Automatic adjustment of the steering
position (if equipped)
A desired steering posi tion can be entered
to memory and recalled automatically by
the driving position memory system.
(  P.105)
■Power easy access system (power type)
The steering wheel and driver’s seat move
in accordance with engine switch mode and
the driver’s seat belt condition. ( P.105)
Steering wheel
Adjustment procedure
WARNING
■Caution while driving
Do not adjust the steering wheel while
driving.
Doing so may cause the driver to mis-
handle the vehicle and cause an acci-
dent, resulting in death or serious injury.

1093-4. Adjusting the steering wheel and mirrors
3
Before driving
To sound the horn, press on or close to
the mark.The height of the rear view mirror can
be adjusted to suit your driving pos-
ture.
Adjust the height of the rear view mir-
ror by moving it up and down.
Responding to the level of brightness
of the headlights of vehicles behind, the
reflected light is automatically
reduced.
Turn the automatic anti-glare function
mode on/off
WARNING
■After adjusting the steering wheel
(manual type)
Make sure that the steering wheel is
securely locked.
Otherwise, the steering wheel may move
suddenly, possibly causing an accident,
and resulting in death or serious injury.
Also, the horn may not sound if the steer-
ing wheel is not securely locked.
Horn
Inside rear view mirror
The rear view mirror’s position can
be adjusted to enable sufficient
confirmation of the rear view.
Adjusting the heig ht of rear view
mirror
WARNING
■Caution while driving
Do not adjust the position of the mirror
while driving.
Doing so may lead to mishandling of the
vehicle and cause an accident, resulting
in death or serious injury.
Anti-glare function

1214-1. Before driving
4
Driving
WARNING
●Be careful not to shift the shift lever
with the accelerator pedal depressed.
Shifting the shift lever to a gear other
than P or N may lead to unexpected
rapid acceleration of the vehicle that
may cause an accident and result in
death or serious injury.
■If a brake pad wear warning message
is displayed
Have the brake pads visually checked
and replaced by your Lexus dealer as
soon as possible.
Rotor damage may result if the pads are
not replaced when needed.
Moderate levels of the brake pad and
disc wear allow enha nced braking power.
As a result, the discs may wear more
quickly than conventional brake discs.
Therefore, when replacing the brake
pads, Lexus recommends that you also
have the thickness of the discs measured.
It is dangerous to drive the vehicle when
the wear limits of the brake pads and/or
those of the brake discs are exceeded.
■When the vehicle is stopped
●Do not race the engine.
If the vehicle is in any gear other than P
or N, the vehicle may accelerate sud-
denly and unexpectedly, causing an
accident.
●In order to prevent accidents due to
the vehicle rolling away, always keep
depressing the brake pedal while the
engine is running, and apply the park-
ing brake as necessary.
●If the vehicle is stopped on an incline,
in order to prevent accidents caused
by the vehicle rolling forward or back-
ward, always depress the brake pedal
and securely apply the parking brake
as needed.
●Avoid revving or racing the engine.
Running the engine at high speed
while the vehicle is stopped may cause
the exhaust system to overheat, which
could result in a fire if combustible
material is nearby.
■When the vehicle is parked
●Do not leave glasses, cigarette lighters,
spray cans, or soft drink cans in the
vehicle when it is in the sun.
Doing so may result in the following:
• Gas may leak from a cigarette lighter or spray can, and may lead to a fire.
• The temperature inside the vehicle may cause the plastic lenses and plas-
tic material of glasses to deform or
crack.
• Soft drink cans may fracture, causing the contents to spray over the interior
of the vehicle, and may also cause a
short circuit in the vehicle’s electrical
components.
●Do not leave cigarette lighters in the
vehicle. If a cigare tte lighter is in a
place such as the glove box or on the
floor, it may be lit accidentally when
luggage is loaded or the seat is
adjusted, causing a fire.
●Do not attach adhesive discs to the
windshield or windows. Do not place
containers such as air fresheners on
the instrument panel or dashboard.
Adhesive discs or containers may act
as lenses, causing a fire in the vehicle.
●Do not leave a door or window open if
the curved glass is coated with a met-
allized film such as a silver-colored
one. Reflected sunlight may cause the
glass to act as a lens, causing a fire.

1224-1. Before driving
WARNING
●Always apply the parking brake, shift
the shift lever to P, stop the engine and
lock the vehicle.
Do not leave the vehicle unattended
while the engine is running.
If the vehicle is parked with the shift
lever in P but the parking brake is not
set, the vehicle may start to move, pos-
sibly leading to an accident.
●Do not touch the exhaust pipes while
the engine is running or immediately
after turning the engine off.
Doing so may cause burns.
■When taking a nap in the vehicle
Always turn the engine off. Otherwise, if
you accidentally move the shift lever or
depress the accelerator pedal, this could
cause an accident or fire due to engine
overheating. Additionally, if the vehicle is
parked in a poorly ventilated area,
exhaust gases may collect and enter the
vehicle, leading to death or a serious
health hazard.
■When braking
●When the brakes are wet, drive more
cautiously.
Braking distance increases when the
brakes are wet, and this may cause one
side of the vehicle to brake differently
than the other side. Also, the parking
brake may not securely hold the vehi-
cle.
●If the brake booster device does not
operate, do not follow other vehicles
closely and avoid hills or sharp turns
that require braking.
In this case, braking is still possible, but
the brake pedal should be depressed
more firmly than usual. Also, the brak-
ing distance will increase. Have your
brakes fixed immediately.
●Do not pump the brake pedal if the
engine stalls.
Each push on the brake pedal uses up
the reserve for the power-assisted
brakes.
●The brake system consists of 2 individ-
ual hydraulic systems; if one of the sys-
tems fails, the other w ill still operate. In
this case, the brak e pedal should be
depressed more firmly than usual and
the braking distance will increase.
Have your brakes fixed immediately.
For vehicles equipped with carbon
ceramic brakes (CCB), in situations such
as the following, braking performance
may be temporarily reduced:
●When the brake pads or brake discs
have recently been replaced
●When the brakes are wet, such as after
washing the vehicle or when driving
through water or snow
●When the temperature of the brake
discs is low
If the wheels become full of snow, such as
when driving through deep snow, ice
may become stuck between a brake pad
and disk and braking performance may
be reduced.
Drive with sufficient space between your
vehicle and preceding vehicles, at a
moderate speed and depress the brake
more firmly than normal when decelerat-
ing.
■If the vehicle becomes stuck
Do not spin the wheels excessively when
a driven wheel is up in the air, or the vehi-
cle is stuck in sand, mud, etc. This may
damage the driveline components or
propel the vehicle forward or backward,
causing an accident.
NOTICE
■When driving the vehicle
●Do not depress the accelerator and
brake pedals at th e same time while
driving, as this may restrain the engine
output.

1264-1. Before driving
■Total load capacity and seating capacity
These details are also described on the tire
and loading information label. ( P.279)
WARNING
●Do not place cargo or luggage in or on
the following locations.
• At the feet of the driver
• On the front passenger or rear seats (when stacking items)
• On the package tray
• On the instrument panel
•On the dashboard
• In front of the Center Display
●Secure all items in the occupant com-
partment.
■Capacity and distribution
●Do not exceed the maximum axle
weight rating or the total vehicle
weight rating.
●Even if the total load of occupant’s
weight and the cargo load is less than
the total load capacity, do not apply the
load unevenly. Improper loading may
cause deterioration of steering or
braking control which may cause
death or serious injury.
Vehicle load limits
Vehicle load limits include total
load capacity, seating capacity,
towing capacity and cargo capac-
ity.
 Total load capacity (vehicle
capacity weight): P.342
Total load capacity means the com-
bined weight of occupants, cargo
and luggage.
 Seating capacity: P.342
Seating capacity means the maxi-
mum number of occupants whose
estimated average weight is 150 lb.
(68 kg) per person.
 Towing capacity
Lexus does not recommend towing
a trailer with your vehicle.
 Cargo capacity
Cargo capacity may increase or
decrease depending on the weight
and the number of occupants.
WARNING
■Overloading the vehicle
Do not overload the vehicle.
It may not only cause damage to the tires,
but also degrade steering and braking
ability, resulting in an accident.