2021 LEXUS RCF check engine

4TABLE OF CONTENTS
Hood..................................................264
Positioning a floor jack............... 265
Engine compartment.................. 267
Tires ................................................... 273
Tire inflation pressure ................. 279
Wheels............................................... 281
Air conditioning filter..................282
Electronic key battery ................ 283
Checking and replacing fuses ........................................................... 285
Headlight aim................................. 287
Light bulbs ....................................... 288
7-1. Essential information Emergency flashers..................... 294
If your vehicle has to be stopped in an emergency ............................. 294
If the vehicle is trapped in rising water............................................... 295
7-2. Steps to take in an emergency If your vehicle needs to be towed........................................................... 297
If you think something is wrong ........................................................... 300
Fuel pump shut off system ......... 301
If a warning light turns on or a warn- ing buzzer sounds ..................... 302
If a warning message is displayed ............................................................ 310
If you have a flat tire (vehicles with a spare tire) ...................................... 313
If you have a flat tire (vehicles with an emergency tire puncture
repair kit) ....................................... 319
If the engine wi ll not start .......... 329If you lose your keys.....................
331
If the fuel filler door cannot be opened ........................................... 331
If the electronic key does not oper- ate properly ................................. 332
If the vehicle battery is discharged .......................................................... 334
If your vehicle overheats ........... 337
If the vehicle becomes stuck ... 339
8-1. Specifications Maintenance data (fuel, oil level, etc.) ................................................. 342
Fuel information............................ 349
Tire information ............................. 351
8-2. Customization Customizable features .............. 360
8-3. Items to initialize Items to initialize ........................... 369
8-4. Certifications Certifications ................................. 370
9-1. For owners Reporting safety defects for U.S. owners ........................................... 380
Seat belt instructions for Canadian owners (in French) ................... 380
SRS airbag instructions for Cana- dian owners (in French) ......... 382
Headlight aim instructions for Canadian owners (in French)... .......

................................................ 388
7When trouble arises
8Vehicle specifications
9For owners

6
Please note that this manual applies to
all models and explains all equipment,
including options. Therefore, you may
find some explanations for equipment
not installed on your vehicle.
All specifications provided in this man-
ual are current at the time of printing.
However, because of the Lexus policy
of continual product improvement, we
reserve the right to make changes at
any time without notice.
Depending on specifications, the vehi-
cle shown in the illustrations may differ
from your vehicle in terms of color and
equipment.
Approximately five hours after the
engine is turned off, you may hear
sound coming from under the vehicle
for several minutes. This is the sound of
a fuel evaporation leakage check and,
it does not indicate a malfunction.
A wide variety of non-genuine spare
parts and accessories for Lexus vehi-
cles are currently available in the mar-
ket. You should know that Toyota does
not warrant these products and is not
responsible for their performance, repair, or replacement, or for any dam-
age they may cause to, or adverse
effect they may have on, your Lexus
vehicle.
This vehicle should not be modified
with non-genuine Lexus products.
Modification with non-genuine Lexus
products could affect its performance,
safety or durability, and may even vio-
late governmental regulations. In addi-
tion, damage or performance
problems resulting from the modifica-
tion may not be covered under war-
ranty.
The installation of a mobile two-way
radio system in your vehicle could
affect electronic systems such as:

Multiport fuel injection sys-
tem/sequential multiport fuel injec-
tion system
 Lexus Safety System +
 Anti-lock brake system
 Vehicle dynamics integrated man-
agement
 SRS airbag system
 Seat belt pretensioner system
Be sure to check with your Lexus
dealer for precautionary measures or
special instructions regarding installa-
tion of a mobile two-way radio system.
The vehicle is equipped with sophisti-
For your information
Main Owner’s Manual
Noise from under vehicle after
turning off the engine
Accessories, spare parts and
modification of your Lexus
Installation of a mobile two-way
radio system
Vehicle data recording

13Pictorial index
Windshield wipers .................................................................................................. P.143
Precautions for winter season ..................................................................................... P.204
To prevent freezing (windshield wiper de-icer)
*................................................... P.217
Precautions against car wash ............................. ......................................................... P.242
Fuel filler door ..........................................................................................................P.150
Refueling method .............................................................................................................. P .150
Fuel type/fuel tank capacity ...... ................................................................................... P.343
Tires.......................................................................................................................... ..P.273
Tire size/inflation pressure ............................ ............................................................... P.347
Winter tires.......................................................................................................................... P.204
Checking/rotation/tire pressure warning system.............................................. P.273
Coping with flat tires............................................................................................... P.313, 319
Hood .......................................................................................................................... P.264
Opening ........................................................................................................................ ....... P.264
Engine oil ..................................................................................................................... ......... P.343
Coping with overheating ............................................................................................... P.337
Warning messages ........................................................................................................... P.31 0
Active rear wing
*.................................................................................................... P.195
Headlights .................................................................................................................P.13 8
Parking lights/daytime running lights...............................................................P.138
Turn signal lights ...................................................................................................... P.136
Side marker lights ...................................................................................................P.138
Tail lights .................................................................................................................... P.138
Stop lights
License plate lights .................................................................................................P.138
Back up lights
Shifting the shift lever to R .............................................................................................. P.13 3
*:If equipped
Light bulbs of the exterior lights for driving(Replacing method: P.288, Watts: P.348)
D
E
F
G
H
I
J
K
L
M
N
O

221-1. For safe use
1-1.For safe use
Use only floor mats designed specifi-
cally for vehicles of the same model
and model year as your vehicle. Fix
them securely in place onto the carpet.
1Insert the retaining hooks (clips)
into the floor mat eyelets.
2 Turn the upper knob of each retain-
ing hook (clip) to secure the floor
mats in place.
Always align the marks.
The shape of the reta ining hooks (clips)
may differ from that shown in the illustra-
tion.
Before driving
Observe the following before start-
ing off in the vehicle to ensure
safety of driving.
Installing floor mats
A
WARNING
Observe the following precautions.
Failure to do so may cause the driver’s
floor mat to slip, poss ibly interfering with
the pedals while driv ing. An unexpect-
edly high speed may result or it may
become difficult to stop the vehicle. This
could lead to an accident, resulting in
death or serious injury.
■When installing the driver’s floor mat
●Do not use floor mats designed for
other models or different model year
vehicles, even if they are Lexus Genu-
ine floor mats.
●Only use floor mats designed for the
driver’s seat.
●Always install the floor mat securely
using the retaining hooks (clips) pro-
vided.
●Do not use two or more floor mats on
top of each other.
●Do not place the floor mat bot-
tom-side up or upside-down.
■Before driving
●Check that the floor mat is securely
fixed in the correct place with all the
provided retaining hooks (clips). Be
especially careful to perform this
check after cleaning the floor.
●With the engine stopped and the shift
lever in P, fully depress each pedal to
the floor to make sure it does not inter-
fere with the floor mat.

411-1. For safe use
1
For safety and security
Exhaust gas precautions
Harmful substance to the human
body is included in exhaust gases if
inhaled.
WARNING
Exhaust gases include harmful carbon
monoxide (CO), which is colorless and
odorless. Observe the following precau-
tions.
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 vehi-
cle even when the trunk lid is closed,
open the windows and have the vehi-
cle 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.

581-4. Theft deterrent system
■Items to check before locking the
vehicle
To prevent unexpected triggering of
the alarm and vehicle theft, make sure
of the following:
 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.
■Setting
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.
■Deactivating or stopping
Do one of the following to deactivate
or stop the alarms:
 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. (The alarm will be
deactivated or stopped after a few
seconds.)
■System maintenance
The vehicle has a maintenance-free type
alarm system.
■Triggering of the alarm
The alarm may be triggered in the following
situations:
(Stopping the alarm deactivates the alarm
system.)
●For Canada: The doors are unlocked
using the mechanical key.
Alarm
The alarm uses light and sound to
give an alert when an intrusion is
detected.
The alarm is triggered in the follow-
ing situations when the alarm is set:
 Except for Canada: A locked
door is unlocked or opened in any
way other than using the entry
function, wireless remote control
or mechanical key. (The doors will
lock again automatically.)
 For Canada: A locked door is
unlocked or opened in any way
other than using the entry func-
tion or wireless remote control.
(The doors will lock again auto-
matically.)
 The trunk is opened in any way
other than using the entry func-
tion or wireless remote control.
 The hood is opened.
Setting/deactivating/stopping
the alarm system

632-1. Instrument cluster
2
Vehicle status information and indicators
*1: These lights turn on when the engine switch is turned to IGNITION ON
mode to indicate that a system check is
being performed. They will turn off after
the engine is started, or after a few sec-
onds. There may be a malfunction in a
system if a light does not come on, or
turn off. Have the vehicle inspected by
your Lexus dealer.
*2: This light illuminates on the multi-infor-
mation display.
*3: This light illuminates on the center panel.
The indicators inform the driver of the
operating state of the vehicle’s various
systems.
(U.S.A.)
ABS warning light*1 (  P.303)
(Canada)
ABS warning light*1 ( P.303)
Brake Override System warn-
ing light/Drive-Start Control
warning light
*2 (  P.304)
(U.S.A.)
Parking brake warning light
( P.304)
(Canada)
Parking brake warning light
( P.304)
Electric power st eering system
warning light
*1 (  P.304)
(orange)
LDA (Lane Departure Alert)
indicator ( P.305)
(flashes or
illuminates)PCS warning light*1 (  P.305)
Slip indicator
*1 (  P.305)
Automatic headlight leveling
system warning light ( P.306)
Open door warning light
(  P.306)
Low fuel level warning light
(  P.306)
Driver’s and front passenger’s
seat belt reminder light
(  P.306)
Rear passenger’s seat belt
reminder lights
*3 (  P.307)
Master warning light
*1
(  P.307)
Tire pressure warning light
*1
(  P.307)
WARNING
■If a safety system warning light does
not come on
Should a safety system light such as the
ABS and SRS warning light not come on
when you start the engine, this could
mean that these systems are not available
to help protect you in an accident, which
could result in death or serious injury.
Have the vehicle inspected by your
Lexus dealer immediately if this occurs.
Indicators
Turn signal indicator ( P.136)
(U.S.A.)
Headlight indicator ( P.138)
(Canada)
Tail light indicator ( P.138)
Headlight high beam indicator
(  P.139)
Automatic High Beam indica-
tor
*1 (  P.140)

642-1. Instrument cluster
Drive mode indicators
 TVD (Torque Vectoring Differential)
control mode indicators
*1: These lights turn on when the engine
switch is turned to IGNITION ON
mode to indicate that a system check is
being performed. They will turn off after
the engine is started, or after a few sec-
onds. There may be a malfunction in a
system if a light does not come on, or
turn off. Have the vehicle inspected by
your Lexus dealer.
*2: The light comes on when the system is turned off.
*3: In order to confirm operation, the BSM outside rear view mirror indicators illu-
minate in the following situations:
PCS warning light
*1, 2 (
 P.159)
Cruise control indicator
(  P.171)
Dynamic radar cruise control
indicator ( P.171)
Cruise control “SET” indicator
(  P.171)
(white)
LDA (Lane Departure Alert)
indicator ( P.166)
(green)
LDA (Lane Departure Alert)
indicator ( P.166)
(orange)
(flashes)
LDA (Lane Departure Alert)
indicator ( P.166)
BSM (Blind Spot Monitor) out-
side rear view mirror indica-
tors
*3, 4 (if equipped) ( P.179)
Intuitive parking assist indicator
(if equipped) ( P.187)
(flashes)
Slip indicator*1 ( P.200)
VSC OFF indicator
*1, 2
(  P.200)
TRAC OFF indicator
*1, 2
(  P.200)
Smart access system with
push-button start indicator
*5
(  P.128)
Security indicator
*6 (  P.57,
58)
Low outside temperature indi-
cator
*5, 7 (  P.62)
Eco Driving Indicator Light
*1
(  P.76)
(U.S.A.)
“AIR BAG ON/OFF”
indicator
*1, 6 (  P.36)
(Canada)
“AIR BAG ON/OFF”
indicator
*1, 6 (  P.36)
“EXPERT” indicator ( P.201)
“LAUNCH” indicator ( P.194)
“NORMAL” indicator ( P.192)
Eco drive mode indicator
(  P.192)
“SPORT S” indicator ( P.192)
“SPORT S+” indicator
(  P.192)
“COSTOM” indicator ( P.192)
“STANDARD” indicator (if
equipped) ( P.198)
“SLALOM” indicator (if
equipped) ( P.198)
“TRACK” indicator (if
equipped) ( P.198)