2019 LEXUS RCF immobilizer

TABLE OF CONTENTS
2
RC F_U For your information................................... 8
Reading this manual................................... 12
How to search ..............................................13
Pictorial index............................................... 14
1-1. For safe use
Before driving ................................ 30
For safe driving .............................. 32
Seat belts .......................................... 34
SRS airbags ..................................... 40
Front passenger occupant
classification system ...................51
Safety information for
children .......................................... 57
Child restraint systems ............... 58
Exhaust gas precautions............ 78
1-2. Theft deterrent system
Engine immobilizer system....... 79
Alarm .................................................80
Theft prevention labels ............... 82 2. Instrument cluster
Warning lights and
indicators....................................... 84
Gauges and meters
(RC350/RC300) .....................91
Gauges and meters (RC F)...... 96
Multi-information display
(RC350/RC300) ................. 103
Multi-information display
(RC F) ............................................. 118
Fuel consumption
information ..................................1351
For safety and security 2
Instrument cluster

29
For safety and security
1
RC F_U 1-1. For safe use
Before driving................................. 30
For safe driving .............................. 32
Seat belts .......................................... 34
SRS airbags ..................................... 40
Front passenger occupant
classification system................... 51
Safety information for
children .......................................... 57
Child restraint systems ...............58
Exhaust gas precautions ............ 78
1-2. Theft deterrent system
Engine immobilizer system ....... 79
Alarm .................................................80
Theft prevention labels ............... 82

79 1
For safety and security
RC F_U 1-2. Theft deterrent system
The indicator light flashes after the
engine switch has been turned off to
indicate that the system is operating.
The indicator light stops flashing after
the engine switch has been turned to
ACCESSORY or IGNITION ON
mode to indicate that the system has
been canceled. ■
System maintenance
The vehicle has a maintenance-free type engine immobilizer system. ■
Conditions that may cause the system to malfunction ●
If the grip portion of the key is in contact with a metallic object●
If the key is in close proximity to or touching a key registered to the security system (key
with a built-in transponder chip) of another vehicleEngine immobilizer system The vehicle’s keys have built-in tran sponder chips that prevent the engine
from starting if a key has not been previously registered in the vehicle’s on-
board computer.
Never leave the keys inside the vehicle when you leave the vehicle.
This system is designed to help preven t vehicle theft but does not guarantee
absolute security agai nst all vehicle thefts.
NOTICE ■
To ensure the system operates correctly
Do not modify or remove the system. If mo dified or removed, the proper operation of
the system cannot be guaranteed.

158 3-2. Opening, closing and locking the doors and trunk
RC F_U ■
Electronic Key Battery-Saving Function
When battery-saving mode is set, battery depletion is minimized by stopping the elec-
tronic key from re ceiving radio waves.
■
Conditions affe cting operation
The smart access system with push-button st art uses weak radio wa ves. In the following
situations, the communication between the electronic key and the vehicle may be
affected, preventing the smar t access system with push-but ton start, wireless remote
control and engine immobilizer sy stem from operating properly.
(Ways of coping:  P. 518)●
When the electronic key battery is depleted ●
Near a TV tower, electric power plant, gas st ation, radio station, la rge display, airport or
other facility that generates strong radio wave s or electrical noise●
When carrying a portable radio, cellular phone, cordless phone or other wireless com-
munication device ●
When the electronic key is in contact wi th, or is covered by the following metallic
objects
• Cards to which aluminum foil is attached
• Cigarette boxes that have aluminum foil inside
• Metallic wallets or bags
•Coins
• Hand warmers made of metal
• Media such as CDs and DVDs ●
When other wireless keys (that emit radio waves) are being used nearby ●
When carrying the electronic key together with the following devices that emit radio
waves
• Another vehicle’s electronic key or a wireless key that emits radio waves
• Personal computers or person al digital assistants (PDAs)
• Digital audio players
• Portable game systems ●
If window tint with a metallic content or me tallic objects are atta ched to the rear win-
dow ●
When the electronic key is placed near a battery charger or electronic devicesPress twice while pressing and holding
. Confirm that the electronic key indica-
tor flashes 4 times.
While the battery-saving mode is set, the smart
access system with push -button start cannot be
used. To cancel the function, press any of the
electronic key buttons.

210 4-2. Driving procedures
RC F_U ■
Auto power off function
If the vehicle is left in ACCESSORY mode for more than 20 minutes or IGNITION ON
mode (the engine is not running) for more than an hour with the shift lever in P, the engine
switch will automatically turn off. However, this function cannot entirely prevent battery
discharge. Do not leave the vehicle with the engine switch in ACCESSORY or IGNI-
TION ON mode for long periods of ti me when the engine is not running.■
Electronic key battery depletion
 P. 143 ■
Conditions affe cting operation
 P. 158 ■
Notes for the entry function
 P. 159 ■
If the engine does not start ●
Check that the shift lever is se curely set in P. The engine ma y not start if the shift lever is
displaced out of P. ●
The engine immobilizer system ma y not have been deactivated. (  P. 79)
Contact your Lexus dealer. ■
Steering lock
After turning the engine switch off and opening and closing the doors, the steering wheel
will be locked due to the steering lock func tion. Operating the engine switch again auto-
matically cancels the steering lock. ■
When the steering lock cannot be released
■
Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, operation of the motor may be sus-
pended if the engine is turned on and off repeat edly in a short period of time. In this case,
refrain from operating the engine switch. After about 10 seconds, the steering lock
motor will resume functioning. ■
When “Access System with Elec. Key Malf unction See Owner’s Manual” is displayed
on the multi-information display
The system may be malfunctio ning. Have the vehicle inspected by your Lexus dealer
immediately. ■
If the electronic key battery is depleted
 P. 427“Steering Wheel Lock Press Engine Switch
while Turning Wheel” w ill be displayed on the
multi-information display.
Check that the shift leve r is in P. Press the
engine switch while turn ing the steering wheel
left and right.

516 7-2. Steps to take in an emergency
RC F_U One of the following may be the cause of the problem: ●
There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle. ●
The engine may be flooded.
Try to restart the engine again follo wing correct starting procedures.
(  P. 207)●
There may be a malfunction in th e engine immobilizer system. (  P. 79)
One of the following may be the cause of the problem: ●
The battery may be discharged. (  P. 522)●
The battery terminal connections may be loose or corroded.
The engine starting system may be malfun ctioning due to an electrical problem
such as electronic key battery depletio n or a blown fuse. However, an interim
measure is available to start the engine. (  P. 517)If the engine will not start If the engine will not start even though correct starting procedures are being
followed (  P. 207), consider each of the following points:
The engine will not start even thoug h the starter motor operates nor-
mally.
The starter motor turns over slowly , the interior lights and headlights
are dim, or the horn does not sound or sounds at a low volume.
The starter motor does not turn over

579
RC F_U 8
Vehicle specifications 8-4. Certifications
RC350/RC300
Certifications Immobilizer system

621Alphabetical index
RC F_U Emergency, in case of
If a warning buzzer sounds...........453
If a warning light turns on...............453
If a warning message
is displayed ....................................... 460
If the electronic key
does not operate properly ......... 518
If the engine will not start................. 516
If the vehicle battery is
discharged ......................................... 522
If you have a flat tire .............489, 502
If you think something
is wrong................................................ 451
If your vehicle becomes stuck .....532
If your vehicle has to be
stopped in an emergency ..........443
If your vehicle needs
to be towed ....................................... 444
If your vehicle overheats ................526
Engine ....................................................... 539
ACCESSORY mode..................... 208
Compartment......................................397
Engine switch .......................................207
Hood ........................................................393
How to start the engine ..................207
Identification number ...................... 538
If the engine will not start................. 516
Ignition switch (engine switch)....207
Overheating .........................................526 Engine coolant ...................................... 404
Capacity................................................. 544
Checking ............................................... 404
Preparing and checking
before winter ........................320, 320
Engine coolant temperature
gauge ..................................................91, 96
Engine immobilizer system .................. 79
Engine oil ................................................. 400
Capacity.................................................540
Checking .............................................. 400
Preparing and checking
before winter ........................320, 320
Engine oil maintenance data ........... 403
Engine oil temperature gauge............96
Engine switch ..........................................207
Enhanced VSC ....................................... 312
EPS (Electric Power Steering) ......... 313
Warning light ....................................... 454
Event data recorder (EDR)................... 10
Expert mode ............................................ 316