2021 LEXUS RCF charging

3367-2. Steps to take in an emergency
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 di sconnecting the bat-
tery, turn the engine switch off.
If you are unsure what mode the engine
switch was in befo re 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.
WARNING
■Avoiding battery fires or explosions
Observe the following precautions to
prevent accidentally igniting the flamma-
ble gas that may be emitted from the bat-
tery:
●Make sure each jumper cable is con-
nected to the correct terminal and that
it is not unintentionally in contact with
any other than the intended terminal.
●Do not allow the other end of the
jumper cable connected to the “+” ter-
minal to come into contact with any
other parts or meta l surfaces in the
area, such as brackets or unpainted
metal.
●Do not allow the + and - clamps of the
jumper cables to come into contact
with each other.
●Do not smoke, use matches, cigarette
lighters or allow open flame near the
battery.
■Battery precautions
The battery contains poisonous and cor-
rosive acidic electrol yte, while related
parts contain lead and lead compounds.
Observe the following precautions when
handling the battery:

3458-1. Specifications
8
Vehicle specifications
If replacement is necessary, contact your Lexus dealer.
■Spark plug
*: The fluid capacity is a reference quantity.If replacement is necessary, contact your Lexus dealer.
Ignition system (spark plug)
MakeDENSO FK20HBR-J8
Gap0.031 in. (0.8 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Electrical system (battery)
Open voltage at 68°F (20°C):
12.3 V or higher
If the voltage is lower than the standard value,
charge the battery.
(Voltage is checked 20 minutes after the engine
and all lights are turned off.)
Charging rates5 A max.
Automatic transmission
Fluid capacity*11.8 qt. (11.2 L, 9.9 Imp. qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
■Automatic transmission fluid type
Using transmission fluid other than the above type may cause abnormal noise or vibra-
tion, or damage the transmission of your vehicle.

393Alphabetical Index
Alphabetical Index
A
A/CAir conditioning filter ............................... 282
Automatic air conditioning system ..... 213
Micro dust and pollen filter..................... 217
ABS (Anti-lock Brake System)................199 ABS warning light .....................................303
Active rear wing.............................................195
Adaptive Variable Suspension System200
Air conditioning filter ................................. 282
Air conditioning system Air conditioning filter ............................... 282
Automatic air conditioning system ..... 213
Micro dust and pollen filter..................... 217
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 occupant 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 ......................................303
Alarm ................................................................... 58 Warning buzzer ......................................... 302
Anchor brackets ...................................... 43, 51
Antennas (smart access system with push-button start)........................................ 98
Anti-lock Brake System (ABS)................199 ABS warning light .....................................303 Approach warning........................................ 176
Armrest............................................................ 228
Assist grips ..................................................... 229
Audio system-linked display ........................81
Automatic air conditioning system ........213
Automatic headlight leveling system ....139
Automatic headlight leveling system warning light............................................. 306
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 ............................... 289
Battery Battery checking .......................................... 271
Charging system warning light...........302
If the battery is discharged ....................334
Preparing and checking before winter..........................................................................204
Blind Spot Monitor (BSM)......................... 179
Brake Brake system warning light ..................302
Fluid...................................................................346
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................................... 240, 248, 252
Interior .............................................................245

403Alphabetical Index
Trunk storage extension ........................ 228
Wireless remote control........................... 97
Turn signal lights Replacing light bulbs................................289
Turn signal lever ...........................................136
TVD (Toruqe Vectorin g Differential) .. 198
V
Vanity lights.................................................... 230
Vanity mirrors ............................................... 230
VDIM (Vehicle Dynami cs Integrated Man-
agement)......................................................200
Vehicle data recording . ...................................6
Vehicle Dynamics Integrated Manage- ment (VDIM)..............................................200
Vehicle identification number ................ 342
Vehicle Stability Control (VSC) .............199
Vehicle sway warning display ....................76
Ventilators (seat ventilators)..................... 221
VSC (Vehicle Stabilit y Control) .............199
W
Warning buzzer
Open door....................................................306
Warning buzzers Approach warning...................................... 176
Brake Override System .........................304
Downshifting ..................................................135
Driver’s and front passenger’s seat belt.........................................................................306
Drive-Start Control ..................................304
Electric power steering ..........................304
High coolant temperature .................... 302
LDA (Lane Departure Alert with steering control) ..........................................................164
Low engine oil pressure.........................303
Open door.............................................. 93, 94
Open window ................................................ 113
Parking brake ..............................................304
Pre-collision braking................................. 158
Rear passengers’ seat belt .................... 307 Warning lights............................................... 302
ABS .................................................................. 303
Automatic headlight leveling system306
Brake Override System ........................ 304
Brake system................................................302
Charging system........................................302
Driver’s and front passenger’s seat belt reminder light .......................................... 306
Drive-Start Control.................................. 304
Electric power steering.......................... 304
High coolant temperature.....................302
LDA indicator ............................................. 305
Low engine oil pressure........................ 303
Low fuel level .............................................. 306
Malfunction indicator lamp .................. 303
Master warning light.................................307
Open door warning ................................ 306
Parking brake indicator ......................... 304
Pre-collision system................................. 305
Rear passengers’ seat belt reminder lights ..............................................................307
Slip indicator ................................................ 305
SRS ................................................................... 303
Tire pressure ................................................307
Warning message ........................................ 310
Warning message display.............................81
Washer Checking ....................................................... 272
Preparing and checking before winter..........................................................................204
Switch.................................................................143
Washing and waxing.................................. 240
Weight Cargo capacity .............................................126
Load limits .......................................................126
Weight............................................................. 342
Wheels ...............................................................281 Size .................................................................... 347
Window lock switch ...................................... 113
Windows Power windows ............................................. 112
Rear window defogger............................. 217