key battery LEXUS RCF 2022 Owner's Manual

3117-2. Steps to take in an emergency
RC F Owner's Manual
7
When trouble arises
■If “See Owner’s Manual” is displayed
●If the following messages are shown, fol-
lowing the instructions, accordingly.
• “Engine Coolant Temp High” ( P.336)
• “Transmission Fluid Temp High” ( P.132)
●If any of the following messages are
shown on the multi-information display, it
may indicate a malf unction. Have the
vehicle inspected by your Lexus dealer
immediately.
• “Access System with Elec. Key Malfunc-
tion”
●If any of the following messages are
shown on the multi-info rmation display, it
may indicate a malfunction. Immediately
stop the vehicle and contact your Lexus
dealer.
• “Braking Power Low”
• “Charging System Malfunction”
• “Oil Pressure Low”
 Stop the vehicle in a safe place on a
hard, flat surface.
 Set the parking brake.
 Shift the shift lever to P.
 Stop the engine.
 Turn on the emergency flashers.
( P.292)
 Check the degree of the tire dam-
age.
A tire should only be repaired with the
emergency tire puncture repair kit if
the damage is caused by a nail or
NOTICE
■“High Power Consumption Partial
Limit On AC/Heater Operation” is
frequently shown
There is a possible malfunction relating
to the charging system or the battery
may be deteriorating. Have the vehicle
inspected by your Lexus dealer.
If you have a flat tire (vehi-
cles with an emergency tire
puncture repair kit)
Your vehicle is not equipped with a
spare tire, but instead is equipped
with an emergency tire puncture
repair kit.
A puncture caused by a nail or
screw passing through the tire
tread can be repaired temporarily
with the emergency tire puncture
repair kit.
WARNING
■If you have a flat tire
Do not continue drivin g with a flat tire.
Driving even a short distance with a flat
tire can damage the tire and the wheel
beyond repair. Driving with a flat tire may
cause a circumferential groove on the
side wall. In such a case, the tire may
explode when using the emergency tire
puncture repair kit, resulting in death or
serious injury.
Before repairing the vehicle

3287-2. Steps to take in an emergency
RC F Owner's Manual
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.328)
One of the following may be the cause
of the problem:
 One or both of the battery terminals
may be disconnected. ( P.269)
 The battery may be discharged.
( P.332)
 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

3307-2. Steps to take in an emergency
RC F Owner's Manual
■When the electronic key does not work
properly
●Make sure that the smart access system
with push-button start has not been deac-
tivated in the customization setting. If it is
off, turn the function on.
●Check if battery-saving mode is set. If it is
set, cancel the function. ( P.100)
■Unlocking the door
Use the mechanical key ( P.88) in
order to perform the following opera-
tions: 1
Insert the mechanical key while
pulling on the driver’s door handle.
2 Unlocking the door.
3 Remove the key, return the handle,
and then pull the handle again.
■Locking the door
1 Move the inside lock button to the
lock position.
2 Close the door.
■Opening the trunk
Turn the mechanical key clockwise to
open. ( P.58)
If the electronic key does not
operate properly
If communication between the
electronic key and vehicle is inter-
rupted ( P.100) or the electronic
key cannot be used because the
battery is depleted, the smart
access system with push-button
start and wireless remote control
cannot be used. In such cases, the
doors and trunk can be opened and
the engine can be started by follow-
ing the procedure below.
NOTICE
■In case of a smart access system with
push-button start malfunction or
other key-related problems
Take your vehicle with all the electronic
keys provided with your vehicle, includ-
ing the card key, to your Lexus dealer.
Locking and unlocking the doors
and opening the trunk

3317-2. Steps to take in an emergency
RC F Owner's Manual
7
When trouble arises
■Key linked functions
1 Locks both side door
2 Closes the windows and moon roof (if
equipped) (turn and hold)
*
3Unlocks the door
Turning the key rearward unlocks the
driver’s door. Turning the key again unlocks
the other door.
4 Opens the windows and moon roof (if
equipped) (turn and hold)
*
*
: These settings must be customized at
your Lexus dealer.
1 Ensure that the shift lever is in P and
depress the brake pedal.
2 Touch the Lexus emblem side of the
electronic key to the engine switch.
When the electronic key is detected, a
buzzer sounds and the engine switch will
turn to IGNITION ON mode.
When the smart access system with
push-button start is deactivated in
customization setting, the engine switch
will turn to ACCESSORY mode.
3 Firmly depress the brake pedal and
check that is shown on the
multi-information display.
4 Press the engine switch.
In the event that the engine still cannot
be started, contact your Lexus dealer.
■Stopping the engine
Shift the shift lever to P and press the engine
switch as you normally do when stopping
the engine.
■Electronic key battery
As the above procedure is a temporary
measure, it is recommended that the elec-
tronic key battery be replaced immediately
when the battery is depleted. ( P.281)
■Alarm (For Canada)
Using the mechanical key to lock the doors
will not set the alarm system.
If a door is unlocked using the mechanical
WARNING
■When using the mechanical key and
operating the power windows or
moon roof
Operate the power window or moon
roof after checking to make sure that
there is no possibilit y of any passenger
having any of their bo dy parts caught in
the window or moon roof.
Also, do not allow ch ildren to operate the
mechanical key. It is possible for children
and other passengers to get caught in
the power window or moon roof.
Starting the engine

3327-2. Steps to take in an emergency
RC F Owner's Manual
key when the alarm system is set, the alarm
may be triggered.
■Changing engine switch modes
Release the brake pedal and press the
engine switch in step 3 above.
The engine does not start and modes will be
changed each time the switch is pressed.
(  P.130)
If you have a set of jumper (or booster)
cables and a second vehicle with a
12-volt battery, you can jump start your
vehicle by following the steps below.
1 Confirm that the electronic key is
being carried.
When connecting the jumper (or booster)
cables, depending on the situation, the
alarm may activate and doors locked.
(P.59)
2 Open the hood. ( P.262)
If the vehicle battery is dis-
charged
The following procedures may be
used to start the engine if the vehi-
cle’s battery is discharged.
You can also call your Lexus dealer
or a qualified repair shop.
Restarting the engine

3347-2. Steps to take in an emergency
RC F Owner's Manual
5Start the engine of the second vehi-
cle. Increase the engine speed
slightly and maintain at that level for
approximately 5 minutes to
recharge the battery of your vehi-
cle.
6 Open and close any of the door of
your vehicle with the engine switch
off.
7 Maintain the engine speed of the
second vehicle and start the engine
of your vehicle by turning the
engine switch to IGNITION ON
mode.
8 Once the vehicle’s engine has
started, remove the jumper cables
in the exact reverse order from
which they were connected.
Once the engine starts, have the vehi-
cle inspected at your Lexus dealer as
soon as possible.
■Starting the engine when the battery is
discharged
The engine cannot be started by push-start-
ing.
■To prevent battery discharge
●Turn off the headlights and the audio sys-
tem while the engine is off.
●Turn off any unnecessary electrical com-
ponents when the vehicle is running at a
low speed for an extended period, such
as in heavy traffic.
■Charging the battery
The electricity stored in the battery will dis-
charge gradually even when the vehicle is
not in use, due to natural discharge and the
draining effects of certain electrical appli-
ances. If the vehicle is left for a long time,
the battery may discharge, and the engine
may be unable to start. (The battery
recharges automatically during driving.)
■When recharging or replacing the bat-
tery
●In some cases, it may not be possible to
unlock the doors using the smart access
system with push-button start when the
battery is discharged. Use the wireless
remote control or the mechanical key to
lock or unlock the doors.
●The engine may not start on the first
attempt after the battery has recharged
but will start normally after the second
attempt. This is not a malfunction.
●The engine switch mode is memorized by
the vehicle. When the battery is recon-
nected, the system will return to the
mode it was in before the battery was dis-
charged. Before disconnecting the bat-
tery, turn the engine switch off.
If you are unsure wh at mode the engine
switch was in before the battery dis-
charged, be especially careful when
reconnecting the battery.
■When replacing the battery
●Use a battery that conforms to European
regulations.
●Use a battery that tha case size is same as
the previous one (LN3), 20 hour rate
capacity (20HR) is equivalent (70Ah) or
greater, and performance rating (CCA)
is equivalent (592A) or greater.
• If the sizes differ, the battery cannot be properly secured.
• If the 20 hour rate capacity is low, even if the time period where the vehicle is not
used is a short time, battery may dis-
charge and the engine may not be able to
start.
●For details, consult your Lexus dealer.

380What to do if... (Troubleshooting)
RC F Owner's Manual
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.329)
 If you lose your electronic keys, the
risk of vehicle theft increases signifi-
cantly. Contact your Lexus dealer
immediately. ( P.329)
 Is the electronic key battery weak or
depleted? ( P.281)
 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 door s, 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.331)
 Is the battery discharged?
( P.332)
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

394Alphabetical Index
RC F Owner's Manual
Alphabetical Index
A
A/CAir conditioning filter ...............................280
Automatic air conditioning system .......211
Micro dust and pollen filter..................... 215
ABS (Anti-lock Brake System)................199 ABS warning light ...................................... 301
Active rear wing.............................................195
Adaptive Variable Suspension System 199
Air conditioning filter .................................280
Air conditioning system Air conditioning filter ...............................280
Automatic air conditioning system .......211
Micro dust and pollen filter..................... 215
Airbags Airbag operating conditions................... 30
Airbag precautions for your child .........32
Correct driving posture .............................23
Curtain shield airbag operating condi-tions .................................................................. 30
Curtain shield airbag precautions ........32
Front passenger occupa nt classification
system ............................................................. 36
General airbag precautions ....................32
Locations of airbags.................................... 28
Modification and disposal of airbags . 35
Side airbag operating conditions ......... 30
Side airbag precautions .............................32
Side and curtain shield airbags operating conditions ...................................................... 30
Side and curtain shield airbags precau- tions ...................................................................32
SRS airbags ..................................................... 28
SRS warning light ....................................... 301
Alarm ................................................................... 58 Warning buzzer........................................ 300
Anchor brackets ...................................... 43, 51
Antennas (smart access system with push-button start)........................................ 98
Anti-lock Brake System (ABS)................199 ABS warning light ...................................... 301 Approach warning........................................ 176
Armrest............................................................ 226
Assist grips ......................................................227
Audio system-linked display ........................81
Automatic air conditioning system ......... 211
Automatic headlight leveling system ....139
Automatic headlight leveling system warning light............................................. 304
Automatic High Beam ............................... 140
Automatic light control system............... 138
Automatic transmission ..............................132 M mode ........................................................... 135
Paddle shift switches ....................... 134, 135
Average fuel economy................................. 75
Average vehicle speed ................................ 75
B
Back-up light Replacing light bulbs................................ 287
Battery Battery checking ........................................269
Charging system warning light.......... 300
If the battery is discharged .................... 332
Preparing and checking before winter..........................................................................203
Blind Spot Monitor (BSM)......................... 179
Brake Brake system warning light ................. 300
Fluid................................................................... 344
Parking brake ................................................137
Brake assist ......................................................199
Break-in tips...................................................... 119
Brightness control Instrument panel light control................. 73
BSM (Blind Spot Monitor)......................... 179
C
Card key ............................................................ 88
Care Exterior......................................238, 247, 251
Interior ............................................................. 243

396Alphabetical Index
RC F Owner's Manual
Door glasses ....................................................112
Door lock.......................................................... 92
Open door warning buzzer93, 94, 304
Open door warning light ......................304
Outside rear view mirrors ....................... 110
Drive distance ...................................................75
Drive info 1/Drive info 2/Drive info 3.....75
Drive information ............................................75
Driver’s and front passenger’s seat belt reminder light............................................. 304
Driver’s seat position memory Driving position memory........................ 105
Memory recall function ........................... 106
Power easy access system .................... 105
Drive-start control ......................................... 119
Driving Break-in tips .................................................... 119
Correct driving posture .............................23
Driving mode select switch .................... 192
Procedures ...................................................... 118
Winter drive tips......................................... 203
Driving information display .........................75
Driving position memory........................... 105 Memory recall function ........................... 106
Power easy access system .................... 105
Driving range ....................................................75
Driving support system information display ...............................................................................81
Dynamic radar cruise control ................... 171 Warning message.......................................178
E
Eco Driving Indicator.....................................76
Eco Driving Indicator Light .........................76
EDR (Event data recorder) ........................... 8
Elapsed time ......................................................75
Electric Power Steering (EPS) ................199Electric power steer ing system warning
light ................................................................ 302
Electronic key .................................................. 88 Battery-saving function ............................. 99 If the electronic key does not operate
properly ...................................................... 330
Replacing the battery ................................ 281
Emergency flashers .................................... 292
Emergency tire puncture ............................ 311
Emergency, in case of If a warning buzzer sounds.................. 300
If a warning light turns on...................... 300
If a warning message is displayed.... 308
If the battery is discharged .................... 332
If the electronic key does not operate properly ...................................................... 330
If the engine will not start........................ 327
If the fuel filler do or cannot be opened
..........................................................................329
If the vehicle is submerged or water on the road is rising ...................................... 293
If you have a flat tire ........................... 311, 321
If you lose your keys .................................329
If you think something is wrong......... 298
If your vehicle becomes stuck ............ 338
If your vehicle has to be stopped in an emergency ................................................. 292
If your vehicle needs to be towed .....295
If your vehicle overheats ........................336
Engine ACCESSORY mode............................... 130
Compartment..............................................265
Engine switch ................................................ 128
Fuel pump shut off system.....................299
Hood ................................................................ 262
Identification number .................................341
If the engine will not start........................ 327
If your vehicle has to be stopped in an emergency ................................................. 292
Ignition switch (engine switch)............. 128
Overheating .................................................336
Tachometer ..................................................... 66
Engine coolant Capacity ......................................................... 342
Checking ....................................................... 267

398Alphabetical Index
RC F Owner's Manual
Heated steering wheel ................................219
HeatersAutomatic air conditioning system .......211
Heated steering wheel.............................. 219
Outside rear view mirrors ......................215
Rear window ..................................................215
Seat heaters .................................................... 219
High mounted stoplight Replacing light bulbs................................ 287
Hill-start assist control .................................199
Hood Open ............................................................... 262
Hooks Cargo hooks................................................ 225
Coat hooks ....................................................227
Retaining hooks (floor mat)......................22
Horn ................................................................... 109
I
I/M test ............................................................ 259
Identification Engine ...............................................................341
Vehicle ............................................................340
Ignition switch (engine switch).................128 Auto power off function ............................ 131
Changing the engine switch modes. 130
If your vehicle has to be stopped in an
emergency ................................................ 292
Illuminated entry system ........................... 222
Indicators ........................................................... 63
Initialization Items to initialize ......................................... 367
Maintenance ................................................ 255
Power windows..............................................112
Tire pressure warning system ............. 275
Inside rear view mirror ............................... 109
Instrument panel light control ....................73
Interior lights.................................................... 221 Front interior light ........................................ 221
Rear interior light ......................................... 221
Intuitive parking assist Function ........................................................... 186 Warning message ...................................... 188
J
Jack
Positioning a floor jack ............................ 263
Vehicle-equipped jack ................. 312, 322
Jack handle .......................................... 312, 322
Jam protection function Moon roof ........................................................ 115
Power windows ............................................. 112
K
Keyless entrySmart access system with push-button start ...................................................................98
Wireless remote control ...........................90
Keys Battery-saving function.............................. 99
Electronic key ................................................ 88
Engine switch ................................................ 128
If the electronic key does not operate properly ...................................................... 330
If you lose your keys .................................329
Key number plate ........................................ 88
Keyless entry ..........................................92, 98
Mechanical key ............................................. 88
Replacing the battery ................................ 281
Warning buzzer ............................................ 99
Wireless remote control ...........................90
Knee airbags .................................................... 28
L
Lane Departure Alert LDA indicator ............................................. 303
Lane Departure Alert with steering control (LDA) Operation ....................................................... 164
Warning message ...................................... 169
Language (multi-informa tion display) .....81
LATCH anchors ............................................. 49