check engine LEXUS RCF 2021 User Guide

973-2. Opening, closing and locking the doors and trunk
3
Before driving
■Wireless remote control
Press and hold the switch.
A buzzer sounds.
■Trunk grip
Using the trunk grip, lower the trunk
without applying force to the side and
push the trunk down from the outside
to close it.
■Trunk light
●The trunk light turns on when the trunk is
opened.
●If the trunk light is left on when the engine
switch is turned off, the light will go off automatically after 20 minutes.
■Function to prevent the trunk being
locked with the electronic key inside
●When both side doors are locked, closing
the trunk lid with the electronic key left
inside the trunk will sound an alarm.
In this case, the trun
k lid can be opened
by pressing the trunk release button on
the trunk lid.
●If the spare electronic key is put in the
trunk with both side doors locked, the key
confinement prevention function is acti-
vated so the trunk can be opened. In
order to prevent theft, take all electronic
keys with you when leaving the vehicle.
●If the electronic key is put in the trunk with
both side doors locked, the key may not
be detected depending on the location of
the key and the surrounding radio wave
conditions. In this case, the key confine-
ment prevention function cannot be acti-
vated, causing the doors to lock when the
trunk is closed. Make sure to check
where the key is before closing the trunk.
●The key confinement prevention function
cannot be activated if either door is
unlocked. In this case, open the trunk
using the trunk opener.
■Internal trunk release lever
The trunk lid can be opened by pulling the
glow-in-the-dark lever located on the inside
of the trunk lid upward.
The lever will continue to glow for some
time after the trunk lid is closed.
■Using the mechanical key
The trunk can be also opened using the
mechanical key. ( P.332)

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)

1053-3. Adjusting the seats
3
Before driving
*:If equipped
The seat and steering wheel* are auto-
matically adjusted to allow the driver to
enter and exit the vehicle easily.
When all of the following have been
performed, the driver’s seat and steer-
ing wheel
* are automatically adjusted
to a position that allows driver to enter
and exit the vehicle easily.
 The shift lever has been shifted to P.
 The engine switch has been turned
off.
 The driver’s seat belt has been
unfastened.
When any of the following has been
performed, the driver’s seat and steer- ing wheel
* automatically return to their
original positions.
 The engine switch has been turned
to ACCESSORY mode or IGNI-
TION ON mode.
 The driver’s seat belt has been fas-
tened.
*:Power type
■Operation of the power easy access sys-
tem
When exiting the vehicle, the power easy
access system may not op erate if the seat is
already close to the rear position, etc.
■Customization
Some functions can be customized.
(  P.360)
1 Check that the shift lever is in P.
2 Turn the engine switch to IGNI-
TION ON mode.
3 Adjust the driver’s seat, steering
wheel, and outside rear view mir-
rors to the desired positions.
4 While pressing the “SET” button, or
within 3 seconds after the “SET”
button is pressed, press button “1”,
“2” or “3” until the buzzer sounds.
If the selected button has already been
preset, the previously recorded position
Power easy access sys-
tem/driving position mem-
ory
*/memory recall function*
This feature auto matically adjusts
the driver’s seat, steering wheel
and outside rear view mirrors to
make entering and exiting the vehi-
cle easier or to suit your prefer-
ences.
Power easy access system
Recording a driving position into
memory (vehicles with driving
position memory)

1063-3. Adjusting the seats
will be overwritten.
1Check that the shift lever is in P.
2 Turn the engine switch to IGNI-
TION ON mode.
3 Press one of the buttons for the
driving position you want to recall
until the buzzer sounds.
■To stop the position recall operation
part-way through
Perform any of the following:
●Press the “SET” button.
●Press button “1”, “2” or “3”.
●Operate any of the seat adjustment
switches (only cancels seat position
recall).
●Operate the tilt and telescopic steering
control switch (onl y cancels steering
wheel position recall).
■Seat positions that can be memorized
(  P.103)
The adjusted positions other than the posi-
tion adjusted by lumb ar support switch can
be recorded.
■Operating the driving position memory
after turning the engine switch off
Recorded seat positions can be activated
up to 180 seconds after the driver’s door is
opened and another 60 seconds after it is
closed again.
■In order to correctly use the driving
position memory function
If a seat position is already in the furthest
possible position and the seat is operated in
the same direction, the recorded position
may be slightly differen t when it is recalled.
■Registering procedure
Record your driving position to button
“1”, “2” or “3” before performing the
following:
Carry only the key yo u want to register,
and then close the driver’s door.
If 2 or more keys are in the vehicle, the
driving position cannot be recorded
properly.
1 Check that the shift lever is in P.
WARNING
■Seat adjustment caution
Take care during seat adjustment so that
the seat does not strike the rear passen-
ger or squeeze your body against the
steering wheel.
Recalling a driving position
(vehicles with driving position
memory)
Registering/canceling/recall a
driving position to an electronic
key (including a card key) (mem-
ory recall function) (vehicles
with memory recall function)

1133-5. Opening, closing the windows and moon roof
3
Before driving
If you release the switch while the window is
moving, start again from the beginning.
If the window reverses and cannot be fully
closed or opened, have the vehicle
inspected by your Lexus dealer.
■Door lock linked window operation
●The power windows can be opened and
closed using the mechanical key.*
(  P.333)
●The power windows can be opened using
the wireless remote control.* ( P.92)
*: These settings must be customized at
your Lexus dealer.
■Power windows open warning buzzer
A buzzer sounds and a message is shown
on the multi-information display in the
instrument cluster when the engine switch
is turned off and the driver’s door is opened
with the power windows open.
■Customization
Some functions can be customized.
(  P.360)
This function can be used to prevent
children from accidentally opening or
closing a passenger window.
Press the switch.
The indicator will come on and the pas-
WARNING
Observe the following precautions.
Failure to do so may result in death or
serious injury.
■Closing the windows
●The driver is responsible for all the
power window operations, including
the operation for the passengers. In
order to prevent accidental operation,
especially by a child, do not let a child
operate the power windows. It is possi-
ble for children an d other passengers
to have body parts caught in the power
window. Also, when riding with a child,
it is recommended to use the window
lock switch. ( P.113)
●Check to make sure that all passen-
gers do not have any part of their body
in a position where it could be caught
when a window is being operated.
●When using the wireless remote con-
trol or mechanical key and operating
the power windows, operate the
power window after checking to make
sure that there is no possibility of any
passenger having any of their body
parts caught in the window. Also do
not let a child operate window by the
wireless remote control or mechanical
key. It is possible for children and other
passengers to get caught in the power
window.
●When exiting the vehicle, turn the
engine switch off, carry the key and
exit the vehicle along with the child.
There may be accidental operation,
due to mischief, etc., that may possibly
lead to an accident.
■Jam protection function
●Never use any part of your body to
intentionally activa te the jam protec-
tion function.
●The jam protection function may not
work if something gets jammed just
before the window is fully closed. Be
careful not to get any part of your body
jammed in the window.
■Catch protection function
●Never use any part of your body or
clothing to intentionally activate the
catch protection function.
●The catch protection function may not
work if something gets caught just
before the window is fully opened. Be
careful not to get any part of your body
or clothing caught in the window.
Preventing accidental operation
(window lock switch)
A

1153-5. Opening, closing the windows and moon roof
3
Before driving
■The moon roof can be operated when
The engine switch is in IGNITION ON
mode.
■Operating the moon roof after turning
the engine off
The moon roof can be operated for approx-
imately 45 seconds after the engine switch
is turned to ACCESSORY mode or turned
off. It cannot, however, be operated once
either door is opened.
■Jam protection function
If an object is detected between the moon
roof and the frame while the moon roof is
closing or tilting down, travel is stopped and
the moon roof opens slightly.
■Sunshade
The sunshade can be opened and closed
manually. However, the sunshade will open
automatically when the moon roof is
opened.
■Door lock linked moon roof operation
●The moon roof can be opened and
closed using the mechanical key.*
(  P.333)
●The moon roof can be opened using the
wireless remote control.* ( P.90)*: These settings must be customized at
your Lexus dealer.
■If the moon roof does not close normally
Perform the following procedure:
1 Stop the vehicle.
2 Press and hold the “CLOSE” switch.
*
The moon roof will close, reopen and pause
for approximately 10 se conds. Then it will
close again and stop at the completely
closed position.
3 Check to make sure that the moon roof
is completely closed and then release
the switch.
*: If the switch is released at the incorrect
time, the procedure will have to be per-
formed again from the beginning.
If the moon roof does not fully close even
after performing the above procedure cor- rectly, have the vehicle inspected by your
Lexus dealer.
■If the moon roof does not move normally
If the moon roof does not open or close
normally or the automatic opening function
does not operate, perform the following ini-
tialization procedure.
1 Turn the engine switch to IGNITION
ON mode.
2 Operate the moon roof.
Depending on the kind of malfunction per-
form either of the following:
If the moon roof does not open when the
“OPEN” switch is pressed
3 Press and hold the “DOWN” switch or
“CLOSE” switch until the moon roof is
completely closed.
The moon roof will open and close a few
times before it closes completely.
4 Confirm that the moon roof has com-
pletely stopped and release the switch.
If the moon roof does not open com-
pletely automatically even though it tilts
up and opens while the “OPEN” switch is
being pressed and held
3 Press and hold the “O PEN” switch until
the moon roof opens completely.
4 Press and hold th e “CLOSE” switch
until the moon roof closes completely.
5 Press and hold the “U P” switch until the
moon roof tilts up and stops.
6 Press and hold the “DOWN” switch
until the moon roof tilts down and stops
at the completely closed position.
If you release the switch while the moon
roof is moving, perform the procedure
again from the beginning.
If, after performing the above procedures
correctly, the moon roof still does not open
or close normally or the automatic opening
function does not operate, have the vehicle
inspected by your Lexus dealer.
■Moon roof open warning buzzer
A buzzer sounds and a message is shown
on the multi-informat ion display in the
instrument cluster when the engine switch
is turned off and the driver’s door is opened
with the moon roof open.

1163-5. Opening, closing the windows and moon roof
■Customization
Some functions can be customized.
(  P.360)
WARNING
Observe the following precautions.
Failure to do so may cause death or seri-
ous injury.
■Opening the moon roof
●Do not allow any passengers to put
their hands or heads outside the vehi-
cle while it is moving.
●Do not sit on top of the moon roof.
■Opening and closing the moon roof
●The driver is responsible for moon roof
opening and closing operations. In
order to prevent accidental operation,
especially by a child, do not let a child
operate the moon roof. It is possible for
children and other passengers to have
body parts caught in the moon roof.
●Check to make sure that all passen-
gers do not have any part of their body
in a position where it could be caught
when the moon roof is being operated.
●When using the wireless remote con-
trol or mechanical key and operating
the moon roof, oper ate the moon roof
after checking to make sure that there
is no possibility of any passenger hav-
ing any of their body parts caught in
the moon roof. Also, do not let a child
operate moon roof by the wireless
remote control or mech anical key. It is
possible for children and other passen-
gers to get caught in the moon roof.
●When exiting the vehicle, turn the
engine switch off, carry the key and
exit the vehicle along with the child.
There may be accidental operation,
due to mischief, etc., that may possibly
lead to an accident.
■Jam protection function
●Never use any part of your body to
intentionally activa te the jam protec-
tion function.
●The jam protection function may not
work if something gets caught just
before the moon roof is fully closed.
Also, the jam protection function is not
designed to operate while the moon
roof switch is being pressed. Take care
so that your fingers, etc. do not get
caught.
NOTICE
■To prevent damage to the moon roof
●Before opening, make sure that there
are no foreign objects such as stones
or ice around the opening.
●Do not hit the face or edge of the
moon roof with hard objects.
■Operating the moon roof
There is the possibility that water or rain
will get into the vehicle if you operate the
moon roof after a rainfall, snowfall or car
wash. Wipe the moon roof dry with a
cloth before operating it.

1204-1. Before driving
WARNING
●During normal driving, do not turn off
the engine. Turning the engine off
while driving will not cause loss of
steering or braking control, but the
power assist to these systems will be
lost. This will make it more difficult to
steer and brake, so you should pull
over and stop the vehicle as soon as it
is safe to do so.
However, in the event of an emer-
gency, such as if it becomes impossible
to stop the vehicle in the normal way:
P.294
●Use engine braking (downshift) to
maintain a safe speed when driving
down a steep hill.
Using the brakes continuously may
cause the brakes to overheat and lose
effectiveness. (
P.132)
●Do not adjust the positions of the
steering wheel, the seat, or the inside
or outside rear view mirrors while driv-
ing.
Doing so may result in a loss of vehicle
control.
●Always check that all passengers’
arms, heads or other parts of their
body are not outside the vehicle.
●Do not drive in excess of the speed
limit. Even if the legal speed limit per-
mits it, do not drive over 85 mph (140
km/h) unless your vehicle has
high-speed capability tires. Driving
over 85 mph (140 km/h) may result in
tire failure, loss of control and possible
injury. Be sure to consult a tire dealer
to determine whether the tires on your
vehicle are high-speed capability tires
or not before driving at such speeds.
■When driving on slippery road sur-
faces
●Sudden braking, acceleration and
steering may cause tire slippage and
reduce your ability to control the vehi-
cle.
●Sudden acceleration, engine braking
due to shifting, or changes in engine
speed could cause the vehicle to skid.
●After driving through a puddle, lightly
depress the brake pedal to make sure
that the brakes are functioning prop-
erly. Wet brake pads may prevent the
brakes from functioning properly. If the
brakes on only one side are wet and
not functioning properly, steering con-
trol may be affected.
■When shifting the shift lever
●Do not let the vehicle roll backward
while the shift lever is in a driving posi-
tion, or roll forward while the shift lever
is in R.
Doing so may cause the engine to stall
or lead to poor brake and steering
performance, resulting in an accident
or damage to the vehicle.
●Do not shift the shift lever to P while
the vehicle is moving.
Doing so can damage the transmission
and may result in a loss of vehicle con-
trol.
●Do not shift the shift lever to a driving
position while the vehicle is moving
backward.
Doing so can damage the transmission
and may result in a loss of vehicle con-
trol.
●Do not shift the shift lever to R while
the vehicle is moving forward.
Doing so can damage the transmission
and may result in a loss of vehicle con-
trol.
●Moving the shift lever to N while the
vehicle is moving will disengage the
engine from the transmission. Engine
braking is not available when N is
selected.

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.

1234-1. Before driving
4
Driving
NOTICE
●Do not use the accelerator pedal or
depress the accelerator and brake
pedals at the same time to hold the
vehicle on a hill.
■When parking the vehicle
●Always set the parking brake and shift
the shift lever to P. Failure to do so may
cause the vehicle to move or the vehi-
cle may accelerate suddenly if the
accelerator pedal is accidentally
depressed.
●Vehicles with titanium mufflers: Be
careful when parking in a parking spot
with anything protruding from the sur-
face, such as a multi-level parking sys-
tem, as the protruding area may
contact and damage the muffler.
■Avoiding damage to vehicle parts
●Do not turn the steering wheel fully in
either direction and hold it there for an
extended period of time. Doing so may
damage the power steering motor.
●When driving over bumps in the road,
drive as slowly as possible to avoid
damaging the wheels, underside of the
vehicle, etc.
●Vehicles with titanium mufflers: As the
vehicle’s ground clearance is low,
when driving over bumps or areas
where the road height changes, drive
as slowly as possible to avoid damag-
ing the muffler.
■If you get a flat tire while driving
A flat or damaged tire may cause the fol-
lowing situations. Hold the steering
wheel firmly and gradually depress the
brake pedal to slow down the vehicle.
●It may be difficult to control your vehi-
cle.
●The vehicle will make abnormal
sounds or vibrations.
●The vehicle will lean abnormally.
Information on what to do in case of a flat
tire (
P.313, 319)
■When encountering flooded roads
Do not drive on a road that has flooded
after heavy rain etc. Doing so may cause
the following serious damage to the vehi-
cle:
●Engine stalling
●Short in electrical components
●Engine damage caused by water
immersion
In the event that you drive on a flooded
road and the vehicle is flooded, be sure
to have your Lexus dealer check the fol-
lowing:
●Brake function
●Changes in quantity and quality of oil
and fluid used for the engine, transmis-
sion, differential, etc.
●Lubricant condition for the propeller
shaft, bearings and suspension joints
(where possible), and the function of
all joints, bearings, etc.
■Precaution for CCB (Carbon
Ceramic Brake) discs (if equipped)
Be careful not to subject the CCB discs
to any kind of strong impact.
Even if there is no obvious damage, in the
following situations, have the vehicle
inspected by your Lexus dealer: