traction control LEXUS RCF 2018 Owners Manual

11
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)The SRS airbag and seat belt pretensioner devices in your Lexus contain explosive
chemicals. If the vehicle is scrapped with th e airbags and seat belt pretensioners left as
they are, this may cause an accident such as fire. Be sure to have the systems of the SRS
airbag and seat belt pretensioner removed and disposed of by a qualified service shop or
by your Lexus dealer befo re you scrap your vehicle.
Special handling may apply, See www.dt sc.ca.gov/hazardouswaste/perchlorate.
Your vehicle has components that may contain perchlorate. These components may
include airbag, seat belt pretensioners, and wireless remote control batteries.Scrapping of your Lexus
Perchlorate Material WARNING ■
General precautions while driving
Driving under the influence: Never drive your vehicle when under the influence of
alcohol or drugs that have impaired your ability to operate your vehicle. Alcohol and
certain drugs delay reaction time, impair judgment and reduce coordination, which
could lead to an accident that could result in death or serious injury.
Defensive driving: Always driv e defensively. Anticipate mistakes that other drivers or
pedestrians might make and be ready to avoid accidents.
Driver distraction: Always give your full attention to drivin g. Anything that distracts the
driver, such as adjusting controls, talking on a cellular phone or reading can result in a
collision with resulting death or serious in jury to you, your occupants or others.■
General precaution rega rding children’s safety
Never leave children unattended in the vehicl e, and never allow child ren to have or use
the key.
Children may be able to start the vehicle or sh ift the vehicle into neutral. There is also a
danger that children may injure themselves by play ing with the windows, the moon
roof, or other features of the vehicle. In addition, heat build-up or extremely cold tem-
peratures inside the vehicle can be fatal to children.

310 4-5. Using the driving support systems
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)With the engine switch in IGNITION
ON mode, pressing the TVD switch
changes the TVD control mode. The current TVD control mode will be
displayed on the meters.
STANDARD mode
This is the default mode and pro-
vides an optimum balance of driving
agility and stability.
SLALOM mode
This mode emphasizes enhanced
steering response.
TRACK mode
This mode emphasizes stability for
high speed sporty driving.
The multi-information display shows the di stribution of driving force between the
right and left rear wheels. (  P. 118)TVD (Torque Vectoring Differential) 
 : If equippedThe TVD system distributes driving force (torque) between the right and left
rear wheels automatically. This syst em contributes to enhanced steering
response while cornering and increased traction when exiting a corner, pro-
viding an agile driving experience.
Changing TVD control modes 1
2
3
TVD control status on the multi-information display

312 4-5. Using the driving support systems
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)◆ ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the br akes are applied suddenly, or if the
brakes are applied while drivin g on a slippery road surface
◆ Brake assist
Generates an increased level of br aking force after the brake pedal is
depressed when the system detects a panic stop situation
◆ VSC (Vehicle Stability Control)
Helps the driver to contro l skidding when swerving suddenly or turning on
slippery road surfaces
◆ Enhanced VSC (Enhanced Vehicle Stability Control)
Provides cooperative control of the ABS, TRAC, VSC and EPS.
Helps to maintain directional stability when swerving on slippery road sur-
faces by controlling steering performance.
◆ TRAC (Traction Control)
Helps to maintain drive power and pr event the drive wheels from spinning
when starting the vehicle or accelerating on slippery roads
◆ Hill-start assist control
Helps to prevent the vehicle from rolling backward when starti ng on an incline
◆ VGRS (Variable Gear Ratio Steering) (if equipped)
Adjusts the front wheel turning angle in accordance with the vehicle speed
and steering wheel movement
◆ DRS (Dynamic Rear Steering) (if equipped)
Contributes to the turning characteristi cs and responsiveness of the vehicle
by adjusting the rear wheel angle of the vehicle in accordance with steering
wheel movement.Driving assist systems To help enhance driving safety and perf ormance, the following systems oper-
ate automatically in response to variou s driving situations. Be aware, however,
that these systems are supplementary and should not be relied upon too heav-
ily when operating the vehicle.

314 4-5. Using the driving support systems
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)The slip indicator light will flash while
the TRAC/VSC systems are operating.
If the vehicle gets stuck in mud, dirt or snow, the TRAC system may reduce
power from the engine to the wheels. Pressing ( )
to turn the system
off may make it easier for you to ro ck the vehicle in order to free it.
RC350/RC300
To turn the TRAC system off, quickly
press and release . The “Traction Control Turned Off” will
be shown on the multi-information dis-
play.
Press again to turn the system
back on.When the TRAC/VSC systems are operating
Disabling the TRAC system

3154-5. Using the driving support systems
4
Driving
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
RC F
To turn the TRAC system off, quickly
press and release ( ). The “TRAC OFF” indicator light will
come on.
Press ( ) again to turn the
system back on. ■
Turning off both TRAC and VSC systems 
RC350
/RC300To turn the TRAC and VSC systems off, pr ess and hold for more than 3 seconds
while the vehicle is stopped.
The VSC OFF indicator light will come on an d the “Traction Control Turned Off” will be
shown on the multi-information display.
* 1
Press again to turn the systems back on. 
RC F
To turn the TRAC and VSC systems off, press and hold ( ) for more than
3 seconds.
The “TRAC OFF” indicator li ght and the VSC OFF indica tor light will come on.
* 2
Press ( ) again to turn the systems back on.
* 1
: On vehicles with PCS (Pre-Collision System ), pre-collision brake assist, pre-collision
braking, and steering control (performed through cooperative control of PCS and
LDH) (if equipped) will also be disabled. The pre-collision system warning light will
come on and a message will be displaye d on the multi-information display. (  P. 460)
* 2
: On vehicles with PCS (Pre-Collision Syst em), pre-collision brake assist and pre-
collision braking will also be disabled. The pre-collision system warning light will come
on and a message will be displayed on the multi-information display. (  P. 460)

454 7-2. Steps to take in an emergency
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U) (U.S.A.)
(Canada)
Parking brake warning light (warning buzzer)
* 1
Indicates that the parking brake is engaged
 Release the parking brake.
Electric power steering system warning light (warning buzzer)
Indicates a malfunction in the EPS (Electric Power Steering) sys-
tem
 Have the vehicle inspected by your Lexus dealer immediately.
LDA (Lane Departure Alert) indicator
If the LDA indicato r is illuminated:
Indicates a malfunction in the LDA (Lane Departure Alert with
steering control) system.
 Check the warning message displa yed on the multi-information
display. (  P. 460)
If the LDA indicator flashes:
Indicates that the vehicle has deviated from the lane (while the
LDA [Lane Departure Alert with stee ring control] system is oper-
ating)
 Check the area around the vehicle and return the vehicle to
between the lane lines. (Flashes or illuminates)
PCS warning light
Indicates a malfunction in the PCS (Pre-Collision System) or that
the system is temporarily unavailable due to the vehicle being
extremely hot/cold, or dirt around a front sensor, etc.
 Follow the instructions displaye d on the multi-information dis-
play. (  P. 260, 470)
If the PCS (Pre-Collision System ) or VSC (Vehicle Stability Con-
trol) system is disabled, the PC S warning light will illuminate.
(  P. 260)
Slip indicator
Indicates a malfunction in:
• The VSC (Vehicle Stability Control) system;
• The TRAC (Traction Control) system; or
• The hill-start assist control system
The light will flash when the VSC or the TRAC system is operating.
 Have the vehicle inspected by your Lexus dealer immediately. (If equipped)
Automatic headlight leve ling system warning light
Indicates a malfunction in the automatic headlight leveling system
 Have the vehicle inspected by your Lexus dealer immediately.
Open door warning light (warning buzzer)
* 2
Indicates that a door or the trunk is not fully closed
 Check that both side doors and the trunk are closed.Warning light Warning light/Details/Actions

474 7-2. Steps to take in an emergency
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U) (If equipped)
Indicates that the windows and the moon roof are not
fully closed (with the engine switch off, and the driver’s
door open)
A buzzer also sounds.
 Close all the windows and the moon roof. (If equipped)
Indicates a malfunction in the TVD (Torque Vectoring
Differential) system
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer. (If equipped)
Indicates that the TVD (Torque Vectoring Differential)
system has overheated
This message may be disp layed when driving under
extremely high load conditions such as the following:
• Continuously driving at high speeds or through
sharp turns
• If either right or left rear tire loses traction and spins
continuously
A buzzer also sounds.
 Drive the vehicle for a while, while avoiding
extremely high load conditions.
Indicates a malfunction in th e Drive-Start Control system
A buzzer also sounds.
 Have the vehicle inspecte d by your Lexus dealer
immediately.Warning message Details/Actions(Flashes)

4797-2. Steps to take in an emergency
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U) 7
When trouble arises Indicates that remaining fuel is approximately 2.6 gal.
(10 L, 2.2 Imp. gal.) or less
 Refuel the vehicle.
Indicates that the outside temperature is approximately
37  F (3  C) or lower
A buzzer also sounds.
 Drive carefully, as the road may be icy.
RC350/RC300
Indicates that the TRAC (Traction Control) system has
been deactivated
 Turn the TRAC on. (  P. 314)(If equipped)
Indicates that the engine oil is scheduled to be changed.
(The indicator will not work properly unless the message
has been reset.)
 Check the engine oil, and change if necessary.
After changing the engine oil, the message should
be reset.
Indicates that all maintenance according to the driven
distance on the maintenance schedule
* should be per-
formed soon.
 Comes on approximately 4500 miles (7200 km)
after the message has been reset.
If necessary, perform maintenance. Please reset
the message after the maintenance is performed.
(  P. 385)Warning message Details/Actions

562 8-1. Specifications
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)This information has been prepared in acco rdance with regulations issued by the
National Highway Traffic Safety Administra tion of the U.S. Department of Trans-
portation.
It provides the purchasers and/or prospe ctive purchasers of Lexus vehicles with
information on uniform tire quality grading.Your Lexus dealer will help answer any ques tions you may have as you read this infor-
mation.■
DOT quality grades
All passenger vehicle tires must conform to Federal Safety Requirements in
addition to these grades. Quality grad es can be found where applicable on
the tire sidewall between tread shoulder and maximum section width. For example: Treadwear 200 Traction AA Temperature A■
Treadwear
The treadwear grade is a comparative rati ng based on the wear rate of the tire
when tested under controlled conditio ns on a specified government test
course. For example, a tire graded 150 would wear one and a half (1 - 1/2) times as well on
the government course as a tire graded 100.
The relative performance of tires depends upon the actua l conditions of their use.
Performance may differ significantly from the norm due to variations in driving
habits, service practices and difference s in road characteristics and climate.■
Traction AA, A, B, C
The traction grades, from highest to lo west, are AA, A, B and C, and they rep-
resent the tire’s ability to stop on wet pavement as measured under controlled
conditions on specified government 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.Uniform Tire Quality Grading

633Alphabetical index
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)Tools............................................... 490, 504
Top tether strap.........................................76
Torque Vectoring Differential
(TVD) ...................................................... 310
Total load capacity ............................... 204
Towing
Dinghy towing .................................... 206
Emergency towing............................ 444
Towing eyelet....................................... 447
Trailer towing ...................................... 205
TRAC (Traction Control) ...................312
Traction Control (TRAC) ...................312
Trailer towing ......................................... 205
Transmission.............................................213
Automatic transmission ....................213
Driving mode select switch ........... 301
If the shift lever cannot be
shifted from P .................................... 219
M mode ................................................... 216
Paddle shift switches ............... 215, 216
Trip meters .......................................... 91, 96 Trunk ............................................................ 151
Internal trunk release lever .............153
Luggage security system................. 152
Smart access system
with push-button start..................... 151
Trunk features...................................... 353
Trunk grip ................................................ 152
Trunk light................................................153
Trunk opener main switch .............. 152
Trunk opener switch ........................... 151
Trunk storage extension ................ 357
Wireless remote control................... 151
Trunk light.................................................. 153
Wattage .................................................553
Turn signal lights ..................................... 221
Replacing light
bulbs .............................434, 436, 439
Turn signal lever ................................... 221
Wattage .................................................553
TVD (Torque Vectoring
Differential) ...........................................310
* : Refer to the “NAVIGATIO N AND MULTIMEDIA SYSTEM
OWNER’S MANUAL”.