2021 LEXUS RC350 Electric power steering

632-1. Instrument cluster
2
Vehicle status information and indicators
Warning lights inform the driver of mal-
functions in the indicated vehicle sys-
tems.
*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.
Warning lights
(U.S.A.)
Brake system warning light*1
(  P.295)
(red)
(Canada)
Brake system warning light*1
(  P.295)
(yellow)
Brake system warning light*1
(  P.295)
High coolant temperature
warning light
*2 (  P.295)
Charging system warning
light
*3 (  P.296)
Low engine oil pressure warn-
ing light
*2 (  P.296)
(U.S.A.)
Malfunction indicator lamp*1
(  P.296)
(Canada)
Malfunction indicator lamp*1
(  P.296)
SRS warning light
*1 (  P.296)
(U.S.A.)
ABS warning light*1 ( P.297)
(Canada)
ABS warning light*1 ( P.297)
(flashes)
(U.S.A.)
Parking brake warning light
(  P.300)
(flashes)
(Canada)
Parking brake warning light
(  P.300)
(flashes) Brake hold operated indicator
*1
(  P.295)
Brake Override System warn-
ing light/Drive-Start Control
warning light
*2 (  P.297)
Electric power steering system
warning light
*1 (  P.297)
(orange)
LDA (Lane Departure Alert)
indicator ( P.298)
(flashes or
illuminates)PCS warning light*1 (  P.298)
Slip indicator
*1 (  P.298)
Open door warning light
(  P.299)
Low fuel level warning light
(  P.299)
Driver’s and front passenger’s
seat belt reminder light
(  P.299)
Rear passenger’s seat belt
reminder lights
*4 (  P.299)
Master warning light
*1
(  P.300)
Tire pressure warning light
*1
(  P.300)

2014-5. Using the driving support systems
4
Driving
■ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the
brakes are applied suddenly, or if the
brakes are applied while driving on a
slippery road surface
■Brake assist
Generates an increased level of brak-
ing force after the brake pedal is
depressed when the system detects a
panic stop situation
■VSC (Vehicle Stability Control)
Helps the driver to control skidding
when swerving sudden ly or turning on
slippery road surfaces
■Enhanced VSC (Enhanced Vehi-
cle 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 perfor-
mance.
■TRAC (Traction Control)
Helps to maintain drive power and pre-
vent the drive wheels from spinning
when starting the vehicle or accelerat-
ing on slippery roads
■Hill-start assist control
Helps to reduce the backward move-
ment of the vehicle when starting on an
uphill
■VGRS (Variable Gear Ratio Steer-
ing) (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 characteris-
tics and responsiveness of the vehicle
by adjusting the rear wheel angle of the
vehicle in accordance with steering
wheel movement.
■EPS (Electric Power Steering)
Employs an electric motor to reduce
the amount of effort needed to turn the
steering wheel
■Adaptive Variable Suspension Sys-
tem (if equipped)
By independently controlling the
damping force of th e shock absorbers
for each of the 4 wheels according to
the road and driving conditions, this
system combines riding comfort with
superior vehicle stability, and helps
good vehicle posture.
Driving assist systems
To keep driving safety and perfor-
mance, the following systems oper-
ate automatically in response to
various driving situations. Be aware,
however, that these systems are
supplementary and should not be
relied upon too heavily when oper-
ating the vehicle.
Summary of the driving assist
systems

2977-2. Steps to take in an emergency
7
When trouble arises
■ABS warning light
■Brake Override System warning light/Drive-Start Control warning light*
(warning buzzer)
*: This light illuminates on the multi-information display.
■Electric power steering system warning light (warning buzzer)
Warning lightDetails/Actions
(U.S.A.)
or
(Canada)
Indicates a malfunction in:
 The ABS; or
 The brake assist system
 Have the vehicle inspected by your Lexus dealer immediately.
Warning lightDetails/Actions
When a buzzer sounds:
Brake Override System is malfunctioning;
 Drive-Start Control is operating; or
 Drive-Start Control is malfunctioning
 Follow the instructions displayed on the multi-information display.
When a buzzer does not sound:
Brake Override System is operating
 Release the accelerator pedal and depress the brake pedal.
Warning lightDetails/Actions
Indicates a malfunction in the EPS (Electric Power Steering) system
Have the vehicle inspected by your Lexus dealer immediately.

3017-2. Steps to take in an emergency
7
When trouble arises
■Brake hold operated indicator (warning buzzer)
■SRS warning light
This warning light system monitors the air-
bag sensor assembly, fr ont impact sensors,
side impact sensors (door), side impact
sensors (front), side impact sensors (rear),
driver’s seat position sensor, driver’s seat
belt buckle switch, front passenger occu-
pant classification system, “AIR BAG ON”
indicator light, “AIR BAG OFF” indicator
light, front passenger’s seat belt buckle
switch, seat belt pret ensioners, airbags,
interconnecting wiring and power sources.
(  P.29)
■Front passenger detection sensor, seat
belt reminder and warning buzzer
●If luggage is placed on the front passen-
ger seat, the front passenger detection
sensor may cause th e warning light to
flash and the warning buzzer to sound
even if a passenger is not sitting in the
seat.
●If a cushion is placed on the seat, the sen-
sor may not detect a passenger, and the
warning light may not operate properly.
■If the malfunction indicator lamp comes
on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fuel tank immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after several driving
trips.
If the light does not go off even after several
trips, contact your Lexus dealer as soon as
possible.
■Electric power steering system warning
light (warning buzzer)
When the battery charge becomes insuffi- cient or the voltage temporarily drops, the
electric power steering system warning
light may come on and the warning buzzer
may sound.
■When the tire pressure warning light
comes on
Check the tire inflatio n pressure and adjust
to the appropriate leve l. Pushing the tire
pressure warning reset switch will not turn
off the tire pressure warning light.
■The tire pressure warning light may
come on due to natural causes
The tire pressure wa rning light may come
on due to natural causes such as natural air
leaks and tire inflation pressure changes
caused by temperature. In this case, adjust-
ing the tire inflation pressure will turn off the
warning light (after a few minutes).
■When a tire is replaced with the spare
tire
The spare tire is not equipped with a tire
pressure warning valve and transmitter. If a
tire goes flat, the tire pressure warning light
will not turn off even though the flat tire has
been replaced with the spare tire.
■Conditions that the tire pressure warn-
ing system may not function properly
 P.268
■If the tire pressure warning light fre-
quently comes on after blinking for 1
minute
If the tire pressure wa rning light frequently
comes on after blinking for 1 minute when
the engine switch is turned to IGNITION
ON mode, have it checked by your Lexus
dealer.
■Warning buzzer
In some cases, the buzzer may not be heard
due to being in a noisy location or audio
sound.
Warning lightDetails/Actions
(flashes)
Indicates a malfunction in the brake hold system
 Have the vehicle inspected by your Lexus dealer immediately.

3027-2. Steps to take in an emergency
WARNING
■If both the ABS and the brake system
warning lights remain on
Stop your vehicle in a safe place immedi-
ately and contact your Lexus dealer. The
vehicle will become extremely unstable
during braking, and the ABS system may
fail, which could cause an accident
resulting in death or serious injury.
■When the electric power steering
system warning light comes on
The steering wheel may become
extremely heavy.
When steering wheel operations are
heavier than usual, grip the steering
wheel firmly and operate it using more
force than usual.
■If the tire pressure warning light
comes on
Be sure to observe the following precau-
tions. Failure to do so could cause a loss
of vehicle control and result in death or
serious injury.
●Stop your vehicle in a safe place as
soon as possible. Adjust the tire infla-
tion pressure immediately.
●If the tire pressure warning light comes
on even after tire inflation pressure
adjustment, it is probable that you have
a flat tire. Check the tires. If a tire is flat,
change it with the spare tire and have
the flat tire repaired by the nearest
Lexus dealer.
●Avoid abrupt maneuvering and brak-
ing. If the vehicle tires deteriorate, you
could lose control of the steering
wheel or the brakes.
■If a blowout or sudden air leakage
should occur
The tire pressure warning system may
not activate immediately.
■Maintenance of the tires
Each tire, including the spare (if pro-
vided), should be checked monthly when
cold and inflated to the inflation pressure
recommended by the vehicle manufac-
turer on the vehicle pl acard or tire infla-
tion pressure label (tire and load
information label). (If your vehicle has
tires of a different size than the size indi-
cated on the vehicle placard or tire infla-
tion pressure label [tire and load
information label], you should determine
the proper tire inflation pressure for
those tires.)
As an added safety fe ature, your vehicle
has been equipped with a tire pressure
monitoring system (TPMS-tire pressure
warning system) that illuminates a low
tire pressure telltale (tire pressure warn-
ing light) when one or more of your tires
is significantly under-inflated. Accord-
ingly, when the low ti re pressure telltale
(tire pressure warning light) illuminates,
you should stop and check your tires as
soon as possible, and inflate them to the
proper pressure. Driving on a signifi-
cantly under-inflated tire causes the tire
to overheat and can lead to tire failure.
Under-inflation also reduces fuel effi-
ciency and tire tread life, and may affect
the vehicle’s handling and stopping abil-
ity.
Please note that the TPMS (tire pressure
warning system) is not a substitute for
proper tire maintenance, and it is the
driver’s responsibility to maintain correct
tire pressure, even if under-inflation has
not reached the level to trigger illumina-
tion of the TPMS low tire pressure telltale
(tire pressure warning light).

387Alphabetical Index
Door lockDoors..................................................................88
Smart access system with push-button start ................................................................... 95
Wireless remote control........................... 86
Doors Automatic door lock ing and unlocking
system ............................................................. 90
Door glasses ....................................................112
Door lock..........................................................88
Open door warning buzzer .........89, 90, 299
Open door warning light ...................... 299
Outside rear view mirrors ....................... 110
Drive distance ...................................................73
Drive info 1/Drive info 2/Drive info 3.....73
Drive information ............................................73
Driver’s seat position memory Driving position memory.........................102
Memory recall function ........................... 104
Power easy access system .....................102
Drive-start control ......................................... 119
Driving Break-in tips .................................................... 119
Correct driving posture .............................23
Driving mode select switch ....................199
Procedures ...................................................... 118
Winter drive tips.........................................205
Driving assist system information display ..............................................................................76
Driving information display .........................73
Driving position memory............................102 Memory recall function ........................... 104
Power easy access system .....................102
Driving range ....................................................73
DRS (Dynamic Rear Steering) ................201
Dynamic radar cruise control Warning message.....................................303
Dynamic radar cruise control with full-speed range .......................................... 176Warning message...................................... 183
Dynamic Rear Steering (DRS) ................201E
Eco Driving Indicator.....................................74
Eco Driving Indicator Light .........................74
EDR (Event data recorder) ............................6
Elapsed time ......................................................73
Electric Power Steering (EPS) ................201 Warning light ............................................... 297
Electronic key .................................................. 84 Battery-saving function..............................96
If the electronic key does not operate properly .........................................................317
Replacing the battery ............................... 277
Emergency flashers .................................... 286
Emergency, in case of If a warning buzzer sounds...................295
If a warning light turns on.......................295
If a warning message is displayed .... 303
If the battery is discharged ..................... 319
If the electronic key does not operate properly .........................................................317
If the engine will not start..........................314
If the fuel filler do or cannot be opened
........................................................................... 316
If the vehicle is trapped in rising water .......................................................................... 287
If you have a flat tire ..................................307
If you lose your keys .................................. 316
If you think something is wrong..........293
If your vehicle becomes stuck .............326
If your vehicle has to be stopped in an emergency ................................................ 286
If your vehicle needs to be towed .... 289
If your vehicle overheats ........................ 322
Engine ACCESSORY mode................................129
Compartment.............................................. 257
Engine switch ................................................. 127
Fuel pump shut off system..................... 294
Hood ................................................................255
How to start the engine ............................ 127
Identification number ...............................329

388Alphabetical Index
If the engine will not start .........................314
If your vehicle has to be stopped in an
emergency ................................................286
Ignition switch (engine switch) ............. 127
Overheating................................................. 322
Tachometer ..................................................... 66
Engine coolant Capacity ......................................................... 332
Checking .......................................................260
Preparing and checking before winter.........................................................................205
Engine coolant temperature gauge ....... 66
Engine immobilizer system ........................ 56
Engine oil Capacity .........................................................330
Checking .......................................................258
Preparing and checking before winter.........................................................................205
Warning light ............................................... 296
Engine oil maintenance data .................. 260
Engine oil pressure gauge ...........................74
Engine oil temperature gauge ...................74
Engine switch .................................................. 127 Auto power off function .......................... 130
Changing the engine switch modes.. 129
If your vehicle has to be stopped in an
emergency ................................................286
EPS (Electric Power Steering) ................201 Warning light ............................................... 297
Event data recorder (EDR) ............................6
F
First-aid kit storage belt ............................ 229
Flat tire Tire pressure warning system .............268
Vehicles with a spare tire ...................... 307
Floor mats ...........................................................22
Fluid Automatic transmission .......................... 333
Brake.................................................... 262, 334
Washer ........................................................... 264
Footwell light ................................................. 225 Front passenger occupant classification
system .............................................................. 36
Front position lights Wattage ......................................................... 338
Front seats Adjustment ....................................................... 99
Cleaning .........................................................245
Correct driving posture ............................ 23
Driving position memory ........................ 102
Head restraints............................................. 105
Memory recall function............................ 104
Power easy access system .................... 102
Seat heaters .................................................. 223
Seat position memory .............................. 102
Seat ventilators ............................................ 223
Front side marker light Light switch .....................................................142
Front turn signal lights Replacing light bulbs ................................282
Turn signal lever .......................................... 136
Wattage ......................................................... 338
Fuel Capacity ........................................................ 330
Fuel gauge ........................................................ 66
Fuel pump shut off system..................... 294
Information ....................................................339
Refueling.......................................................... 155
Type ................................................................. 330
Warning light ...............................................299
Fuel consumption Average fuel economy .............................. 73
Current fuel consumption ........................ 73
Fuel filler door If the fuel filler do or cannot be opened
........................................................................... 316
Refueling.......................................................... 155
Fuel gauge ......................................................... 66
Fuel pump shut off system........................ 294
Fuses ................................................................. 278
G
Garage door opener ................................. 232

392Alphabetical Index
Power easy access system ........................102
Power outlet .................................................. 230
Power steering (Electric power steering
system)............................................................201 Warning light ............................................... 297
Power windows Door lock linked window operation... 113
Jam protection function..............................112
Operation..........................................................112
Window lock switch ................................... 113
Pre-Collision System (PCS) Function ............................................................ 162
PCS OFF switch ..........................................164
Warning light ...............................................298
Warning message.....................................303
R
Radar cruise control (dynamic radar cruise control with full-speed range)............... 176
Radiator ........................................................... 262
RCTA Function ............................................................. 191
Rear Cross Traffic Alert (RCTA) ............ 191
Rear seats .......................................................... 101 Head restraints ............................................ 105
Seat heaters .................................................. 223
Seat ventilators............................................ 223
Rear side marker lights Light switch ..................................................... 142
Rear turn signal lights Turn signal lever ...........................................136
Wattage..........................................................338
Rear view mirror Inside rear view mirror............................. 109
Outside rear view mirrors ....................... 110
Rear window defogger ...............................219
Refueling Capacity .........................................................330
Fuel types.......................................................330
If the fuel filler door cannot be opened...........................................................................316
Opening the fuel tank cap ..................... 155 Remote Touch ................................................210
Replacing
Electronic key battery .............................. 277
Fuses................................................................. 278
Light bulbs ...................................................... 281
Tires ..................................................................307
Resetting the message indicating mainte- nance is required ...................................... 248
Rev indicator .................................................... 69
Rev peak............................................................. 69
S
Seat belt reminder light............................. 299
Seat belts............................................................ 24 Automatic Locking Retractor................. 26
Child restraint system installation ..40, 41
Cleaning and maintaining the seat belt..........................................................................245
Emergency Locking Retractor .............. 26
How to wear your seat belt ..................... 25
How your child should wear the seat belt ............................................................................. 25
Pregnant women, proper seat belt use ............................................................................. 24
Reminder light and buzzer ...................299
Seat belt extender......................................... 25
Seat belt pretensioners .............................. 27
SRS warning light.......................................296
Seat heaters ................................................... 223
Seat position memory..................................102
Seat ventilators ............................................. 223
Seating capacity.............................................125
Seats Adjustment ....................................................... 99
Cleaning .........................................................245
Driving position memory ........................ 102
Head restraints............................................. 105
Power easy access system .................... 102
Properly sitting in the seat ........................ 23
Seat heaters .................................................. 223
Seat position memory .............................. 102
Seat ventilators ............................................ 223