steering LEXUS RCF 2021 Repair Manual

3127-2. Steps to take in an emergency
power off function. Next time when starting
the engine, increase the engine speed
slightly and maintain that level for approxi-
mately 5 minutes to recharge the battery.
■If “Headlight System Malfunction Visit
Your Dealer” is displayed
The following systems may be malfunction-
ing. Have the vehicle inspected by your
Lexus dealer immediately.
●The LED headlight system
●The automatic headlight leveling system
●Automatic High Beam
■If “Radar Cruise Control Unavailable” is
displayed
The dynamic radar cruise control system
cannot be used temporar ily. Use the system
when it becomes available again.
■If a message that indicates the malfunc-
tion of front camera is displayed
The following systems may be suspended
until the problem shown in the message is
resolved. ( P.155, 305)
●PCS (Pre-Collision System)
●LDA (Lane Departure Alert with steering
control)
●Dynamic radar cruise control
●Automatic High Beam
■If “Maintenance Required Soon” is dis-
played
Indicates that all maintenance according to
the driven distance on the maintenance
schedule
* should be performed soon.
Comes on approximately 4500 miles
(7200 km) after the message has been
reset. If necessary, perform maintenance.
Please reset the message after the mainte-
nance is performed. ( P.257)
*: Refer to the separa te “Scheduled Main-
tenance” or “Owner’s Manual Supple-
ment” for the maintenance interval
applicable to your vehicle.
■If “Maintenance Required Visit Your
Dealer” is displayed
Indicates that all maintenance is required to
correspond to the driven distance on the maintenance schedule
*.
Comes on approximately 5000 miles
(8000 km) after the message has been
reset. (The indicator will not work properly
unless the message ha s been reset.) Per-
form the necessary maintenance. Please
reset the message after the maintenance is
performed. ( P.257)
*: Refer to the separate “Scheduled Main-
tenance” or “Owner’s Manual Supple-
ment” for the main tenance interval
applicable to your vehicle.
■If “Active Rear Wing Off Go to Settings
to turn On” is displayed
The active rear wing switch was pressed
when the active rear wing
* was disabled.
Enable the active rear wing before pressing
the active rear wing switch. ( P.195)
*: If equipped
■If “TVD System Overheated Reduce
Engine Speed and Load” is displayed
The TVD system
* has overheated, this mes-
sage may be displayed when driving under
high load conditions, such as the following:
●When driving at high speeds or through
sharp turns continuously
●When either rear tire has lost traction
and spun continuously
Drive the vehicle for a while, while avoiding
high load conditions.
*: If equipped
■If a message that indicates the need for
visiting your Lexus dealer is displayed
The system or part shown on the
multi-information display is malfunctioning.
Have the vehicle inspected by your Lexus
dealer immediately.
■If “See Owner’s Manual” is displayed
●If the following messages are shown, fol-
lowing the instruct ions, accordingly.
• “Engine Coolant Temp High” ( P.337)
• “Transmission Fluid Temp High” ( P.132)
●If any of the following messages are
shown on the multi-information display, it
may indicate a malfunction. Have the

3187-2. Steps to take in an emergency
3Lower the vehicle.
4 Firmly tighten each wheel nut two
or three times in the order shown in
the illustration.
Tightening torque:
76 ft•lbf (103 N•m, 10.5 kgf•m)
5Stow the flat tire, tire jack and all
tools.
■The spare tire
●Use the spare tire temporarily, and only in
an emergency.
●Make sure to check the tire inflation pres-
sure of the spare tire. ( P.347)
■When using the spare tire
As the spare tire is not equipped with a tire
pressure warning valve and transmitter, low
inflation pressure of the spare tire will not be
indicated by the tire pressure warning sys-
tem. Also, if you replace the spare tire after
the tire pressure warning light comes on,
the light remains on.
*:If equipped
■When the spare tire is equipped
The vehicle becomes lower when driving
with the spare tire compared to when driv-
ing with standard tires.
WARNING
■When using the spare tire
●Remember that the sp are tire provided
is specifically designed for use with
your vehicle. Do not use your spare
tire on another vehicle.
●Do not use more than one spare tire
simultaneously.
●Replace the spare tire with a standard
tire as soon as possible.
●Avoid sudden acceleration, abrupt
steering, sudden br aking and shifting
operations that cause sudden engine
braking.
■When the spare tire is attached
The vehicle speed may not be correctly
detected, and the following systems may
not operate correctly:
• ABS & Brake assist
•VSC
•TRAC
• Dynamic radar cruise control
•PCS
•EPS
• Adaptive Variable Suspension System
• LDA (Lane Departure Alert with steering control)
• VDIM (Vehicle Dynamics Integrated Management)
• Tire pressure warning system
• Lexus parking assist monitor
• Intuitive parking assist (if equipped)
• Navigation system (if equipped)

3287-2. Steps to take in an emergency
WARNING
• If the hose comes off the valve while inflating the tire, there is a risk that the
hose will move abruptly due to air
pressure.
• After inflation of the tire has com- pleted, the sealant may splatter when
the hose is disconnected or some air is
let out of the tire.
●Follow the operation procedure to
repair the tire. If the procedure is not
followed, the sealant may spray out.
●Keep back from the tire while it is
being repaired, as th ere is a chance of
it bursting while the repair operation is
being performed. If you notice any
cracks or deformation of the tire, turn
off the compressor switch and stop the
repair operation immediately.
●The kit may overheat if operated for a
long period of time. Do not operate
the compressor continuously for more
than 35 minutes.
●Parts of the kit become hot during
operation. Be careful handling the kit
during and after operation. Do not
touch the metal part around the con-
necting area between the bottle and
compressor. It will be extremely hot.
●Do not attach the vehicle speed warn-
ing sticker to an area other than the
one indicated. If the sticker is attached
to an area where an SRS airbag is
located, such as the pad of the steering
wheel, it may prevent the SRS airbag
from operating properly.
■Driving to spread the liquid sealant
evenly
●Drive the vehicle carefully at a low
speed. Be especially careful when
turning and cornering.
●If the vehicle does not drive straight or
you feel a pull through the steering
wheel, stop the vehicle and check the
following:
• Tire condition. The tire may have sepa- rated from the wheel.
• Tire inflation pressure. If tire inflation pressure is 19 psi (130 kPa, 1.3 kgf/cm
2
or bar) or below, this may indicate
severe tire damage.
NOTICE
■When performing an emergency
repair
●Perform the emergency repair with-
out removing the nail or screw that has
punctured the tread of the tire. If the
object that has punctured the tire is
removed, repair by the emergency tire
puncture repair kit may not be possi-
ble.
●The kit is not waterproof. Make sure
that the kit is not exposed to water,
such as when it is being used in the
rain.
●Do not put the kit directly onto dusty
ground such as sand at the side of the
road. If the kit vacuums up dust etc., a
malfunction may occur.
●Make sure to stand the kit with the bot-
tle vertical. The kit cannot work prop-
erly if it is laid on its side.
■Handling the emergency tire punc-
ture repair kit
●The compressor power source should
be 12 V DC suitable for vehicle use.
Do not connect the compressor to any
other source.
●If gasoline splatters on the kit, the kit
may deteriorate. Take care not to allow
gasoline to contact it.

3307-2. Steps to take in an emergency
The engine starting system may be
malfunctioning due to an electrical
problem such as electronic key battery
depletion or a blown fuse. However, an
interim measure is available to start the
engine. (P.330)
One of the following may be the cause
of the problem:
 One or both of the battery terminals
may be disconnected. ( P.271)
 The battery may be discharged.
( P.334)
 There may be a malfunction in the
steering lock system.
Contact your Lexus dealer if the problem
cannot be repaired, or if repair procedures
are unknown.
When the engine does not start, the
following steps can be used as an
interim measure to start the engine if
the engine switch is functioning nor-
mally:
1 Set the parking brake.
2 Shift the shift lever to P.
3 Turn the engine switch to ACCES-
SORY mode. 4
Press and hold the engine switch
for about 15 seconds while
depressing the brake pedal firmly.
Even if the engine can be started using
the above steps, the system may be
malfunctioning. Have the vehicle
inspected by your Lexus dealer.
The starter motor does not turn
over
The starter motor does not turn
over, the interior lights and head-
lights do not turn on, or the horn
does not sound.
Emergency start function

3478-1. Specifications
8
Vehicle specifications
*1: Minimum pedal clearance when depressed with a force of 112.4 lbf (500 N, 51.0 kgf)
while the engine is running.
*2: Parking brake pedal travel when depressed wi th a force of 67.4 lbf (300 N, 30.6 kgf)
Type A
Steering
Free playLess than 1.2 in. (30 mm)
Tires and wheels
Tire sizeFront tires: 255/35ZR19 (92Y)
Rear tires: 275/35ZR19 (96Y)
Tire inflation pressure (Rec-
ommended cold tire inflation
pressure)
Driving under normal conditions
Front: 36 psi (250 kPa, 2.5 kgf/cm
2 or bar)
Rear: 36 psi (250 kPa, 2.5 kgf/cm
2 or bar)
Driving at high speeds (above 137 mph [220 km/h]) (in
countries where such speeds are permitted by law)
Add 8 psi (50 kPa, 0.5 kgf/cm
2 or bar) to the fronttires and
rear tires. Never exceed th e maximum coldtire inflation
pressure indicated on the tire sidewall.
Wheel sizeFront wheels: 19  9J
Rear wheels: 19  10J
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)

3548-1. Specifications
■Traction AA, A, B, C
The traction grades, from highest to
lowest, are AA, A, B and C, and they
represent the tire’s ability to stop on
wet pavement as measured under con-
trolled conditions on specified govern-
ment test surfaces of asphalt and
concrete.
A tire marked C may have poor traction
performance.
Warning: The traction grade assigned to
this tire is based on braking (straight
ahead) traction tests and does not include
cornering (turning) traction.
■Temperature A, B, C
The temperature grades are A (the
highest), B, and C, representing the
tire’s resistance to the generation of
heat and its ability to dissipate heat when tested under controlled condi-
tions on a specified indoor laboratory
test wheel.
Sustained high temperature can cause the
material of the tire to degenerate and
reduce tire life, and excessive temperature
can lead to sudd
en tire failure.
Grade C corresponds to a level of perfor-
mance which all passenger car tires must
meet under the Fede ral Motor Vehicle
Safety Standard No. 109.
Grades B and A represent higher levels of
performance on the laboratory test wheel
than the minimum required by law.
Warning: The temperature grades of a tire
assume that it is properly inflated and not
overloaded.
Excessive speed, unde rinflation, or exces-
sive loading, either separately or in combi-
nation, can cause heat buildup and
possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pressure
Tire pressure when the vehicle has been parked for
three hours or more, or has not been driven more
than 1 mile or 1.5 km under that condition
Maximum inflation pressureThe maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Recommended inflation pressureCold tire inflation pressure recommended by a
manufacturer
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of automatic trans-
mission, power steering, power brakes, power win-
dows, power seats, radio and heater, to the extent
that these items are available as factory-installed
equipment (whether installed or not)

3648-2. Customization
■Driving position memory* ( P.105)
*:If equipped
■Power easy access system ( P.105)
*:If equipped
■Power windows ( P.112)
Trunk unlocking operationPress and hold
(short)
One short press
——O
Push twice
Press and hold (long)
Off
Alarm (panic mode)OnOff——O
FunctionDefault settingCustomized settingABC
FunctionDefault settingCustomized setting
Selecting the door linking
driving position memory with
door unlock operation
Driver’s doorBoth side doors——O
ABC
FunctionDefault settingCustomized setting
Driver’s seat movement when
exiting the vehicleFullOffO—OPartial
Steering wheel movement*OnOff——O
ABC
FunctionDefault settingCustomized setting
Mechanical key linked opera-
tionOffOn——O
Wireless remote control
linked operationOffOn (Open only)——O
Wireless remote control
linked operation signal
(buzzer)
OnOff——O
ABC

3668-2. Customization
■Lights (P.138)
■PCS (Pre-Collision System) ( P.157)
■LDA (Lane Departure Alert with steering control) ( P.164)
■Intuitive parking assist*( P.187)
*:If equipped
FunctionDefault settingCustomized setting
Daytime running light system
(except Canada)OnOffO—O
FunctionDefault settingCustomized setting
PCS (Pre-Collision System)OnOff—O—
Adjust alert timingMiddleFar—O—Near
FunctionDefault settingCustomized setting
Steering assist functionOnOff—O—
Alert typeSteering wheel
vibrationBuzzer—O—
Alert sensitivityStandardHigh—O—
Vehicle sway warning func-
tionOnOff—O—
Vehicle sway warning sensi-
tivityStandardHigh—O—Low
ABC
ABC
ABC
FunctionDefault settingCustomized setting
Detection distance of the
front center sensorFarNearO—O
Detection distance of the rear
center sensorFarNearO—O
Buzzer volume21 to 3O—O
ABC

390What to do if... (Troubleshooting)
1-1.What to do if... (Troubleshooting)What to do if... (Troubleshooting)
If you lose your mechanical keys,
new genuine mechanical keys can
be made by your Lexus dealer.
( P.331)
 If you lose your electronic keys, the
risk of vehicle theft increases signifi-
cantly. Contact your Lexus dealer
immediately. ( P.331)
 Is the electronic key battery weak or
depleted? ( P.283)
 Is the engine switch in IGNITION
ON mode?
When locking the doors, turn the engine
switch off. ( P.130)
 Is the electronic key left inside the
vehicle?
When locking the doors, make sure that
you have the electronic key on your per-
son.
The function may not operate prop-
erly due to the condition of the radio
wave. ( P.100)
 The function to prevent the elec-
tronic key from being left inside the
trunk will operate and you can open
the trunk as usual. Take the key out
from the trunk. ( P.97)
 Did you press the engine switch
while firmly depressing the brake
pedal? ( P.128)
 Is the shift lever in P? ( P.128)
 Is the electronic key anywhere
detectable inside the vehicle?
( P.99)
 Is the steering wheel unlocked?
( P.128)
 Is the electronic key battery weak or
depleted?
In this case, the engine can be started in a
temporary way. ( P.333)
 Is the battery discharged?
( P.334)
If you have a problem, check the
following before contacting your
Lexus dealer.
The doors cannot be locked,
unlocked, opened or closed
You lose your keys
The electronic key does not
operate properly
The doors cannot be locked or
unlocked
The trunk lid is closed with the
electronic key left inside
If you think something is wrong
The engine does not start
The shift lever cannot be shifted
from P even if you depress the
brake pedal

391What to do if... (Troubleshooting)
Is the engine switch in IGNITION
ON mode?
If you cannot release the shift lever by
depressing the brake pedal with the engine
switch in IGNITION ON mode. ( P.133)
 It is locked automatically to prevent
theft of the vehicle. ( P.128)
 Is the window lock switch pressed?
The power window except for the one at
the driver’s seat cannot be operated if the
window lock switch is pressed. ( P.113)
 The auto power off function will be
operated if the vehicle is left in
ACCESSORY or IGNITION ON
mode (the engine is not running) for
a period of time. ( P.131)
 The seat belt reminder light is flash-
ing
Are the driver and the front passenger
wearing the seat belts? ( P.306)
 The parking brake indicator is on
Is the parking brake released? ( P.137)
Depending on the situation, other
types of warning buzzer may also
sound. ( P.302, 310)
 Did anyone inside the vehicle open
a door during setting the alarm?
The sensor detects it and the alarm sounds.
( P.58)
Do one of the following to deactivate
or stop the alarm:
 Unlock the doors.
 Open the trunk using the entry
function or wireless remote control.
 Turn the engine switch to ACCES-
SORY or IGNITION ON mode, or
start the engine.
 Is the message displayed on the
multi-information display?
Check the message on the multi-informa-
tion display. ( P.310)
 When a warning light turns on or a
warning message is displayed, refer
to P.302, 310.
The steering wheel cannot be
turned after the engine is
stopped
The windows do not open or
close by operating the power
window switches
The engine switch is turned off
automatically
A warning buzzer sounds during
driving
An alarm is activated and the
horn sounds
A warning buzzer sounds when
leaving the vehicle
A warning light turns on or a
warning message is displayed