stop start LEXUS RC350 2022 Owner's Manual

1814-5. Using the driving support systems
RC350/RC300 Owner's Manual
4
Driving
mately 30 mph (50 km/h).
However, when a preceding vehicle is
detected, the dynamic radar cruise con-
trol with full-speed range can be set even
if the vehicle speed is below approxi-
mately 30 mph (50 km/h).
■Accelerating after setting the vehicle
speed
The vehicle can accelerate by operating the
accelerator pedal. After accelerating, the
set speed resumes. However, during vehi-
cle-to-vehicle distance control mode, the
vehicle speed may decrease below the set
speed in order to maintain the distance to
the preceding vehicle.
■When the vehicle stops while follow-up
cruising
●Pushing the lever up while the vehicle
ahead stops will resu me follow-up cruis-
ing if the vehicle ahead starts off within
approximately 3 seconds after the lever
is pushed up.
●If the vehicle ahead starts off within 3 sec-
onds after your vehicle stops, follow-up
cruising will be resumed.
■Automatic cancelation of vehi-
cle-to-vehicle distance control mode
Vehicle-to-vehicle dist ance control mode is
automatically canceled in the following situ-
ations:
●Actual vehicle speed falls at or below
approximately 25 mph (40 km/h) when
there are no vehicles ahead.
●The preceding vehicle leaves the lane
when your vehicle is following at a vehicle
speed at or below approximately 25 mph
(40 km/h). Otherwise, the sensor can
not properly detect the vehicle. (“Radar
Cruise Control Not Available No Pre-
ceding Vehicles” is displayed on the
multi-information display)
●VSC is activated.
●TRAC is activated for a period of time.
●When the VSC or TRAC system is
turned off.
●When snow mode is set.
●The sensor cannot detect correctly
because it is covered in some way.
●Pre-collision braking is activated.
●The parking brake is operated.
●The vehicle is stopped by system control
on a steep incline.
●The following are detected when the
vehicle has been stopped by system con-
trol:
• The driver is not wearing a seat belt.
• The driver’s door is opened.
• The vehicle has been stopped for about 3 minutes.
If vehicle-to-vehicle distance control mode
is automatically canceled for any reasons
other than the above, there may be a mal-
function in the system. Contact your Lexus
dealer.
■Automatic cancelation of constant
speed control mode
Constant speed contro l mode is automati-
cally canceled in the following situations:
●Actual vehicle speed is more than
approximately 10 mph (16 km/h) below
the set vehicle speed.
●Actual vehicle speed falls below approxi-
mately 25 mph (40 km/h).
●VSC is activated.
●TRAC is activated for a period of time.
●When the VSC or TRAC system is
turned off.
●Pre-collision braking is activated.
If constant speed control mode is automati-
cally canceled for any other reason, there
may be a malfunction in the system. Con-
tact your Lexus dealer.
■Brake system operation sound
If the brakes are app lied automatically while
the vehicle is in vehicle-to-vehicle distance
control mode, a brake system operation
sound may be heard. This does not indicate
a malfunction.
■Warning messages and buzzers for
dynamic radar cruise control with
full-speed range
Warning messages and buzzers are used to
indicate a system malfunction or to inform
the driver of the need for caution while driv-
ing. If a warning messa ge is shown on the

1934-5. Using the driving support systems
RC350/RC300 Owner's Manual
4
Driving
●Guardrails, walls, signs, parked vehicles
and similar stationary objects*
●Following vehicles that are in the same
lane*
●Vehicles traveling 2 lanes away from your
vehicle*
●Vehicles which are being overtaken rap-
idly by your vehicle*
*
: Depending on the conditions, detection of a vehicle and/or object may occur.
■Conditions under which the BSM func-
tion may not function correctly
●The BSM function may not detect vehi-
cles correctly in the following situations:
• When the sensor is misaligned due to a
strong impact to the sensor or its sur-
rounding area
• When mud, snow, ice, a sticker, etc. is
covering the sensor or surrounding area
on the rear bumper
• When driving on a road surface that is
wet with standing water during bad
weather, such as heav y rain, snow, or fog
• When multiple vehicles are approaching
with only a small gap between each vehi-
cle
• When the distance between your vehicle and a following vehicle is short
• When there is a significant difference in speed between your vehicle and the vehi-
cle that enters the detection area
• When the difference in speed between your vehicle and another vehicle is
changing
• When a vehicle enters a detection area traveling at about the same speed as your
vehicle
• As your vehicle starts from a stop, a vehi- cle remains in the detection area
• When driving up and down consecutive steep inclines, such as hills, dips in the
road, etc.
• When driving on roads with sharp bends, consecutive curves, or uneven surfaces
• When vehicle lanes are wide, or when driving on the edge of a lane, and the
vehicle in an adjacent lane is far away
from your vehicle
• When a bicycle carrier or other acces- sory is installed to the rear of the vehicle
• When there is a significant difference in height between your vehicle and the
vehicle that enters the detection area
• Immediately after the BSM main switch is
turned on
●Instances of the BSM function unneces-
sarily detecting a vehicle and/or object
may increase in the following situations:
• When the sensor is misaligned due to a strong impact to the sensor or its sur-
rounding area
• When the distance between your vehicle and a guardrail, wall, etc. that enters the
detection area is short
• When driving up and down consecutive steep inclines, such as hills, dips in the
road, etc.
• When vehicle lanes are narrow, or when driving on the edge of a lane, and a vehi-
cle traveling in a lane other than the adja-
cent lanes enters the detection area
• When driving on roads with sharp bends, consecutive curves, or uneven surfaces
• When the tires are slipping or spinning
• When the distance between your vehicle and a following vehicle is short
• When a bicycle carrier or other acces- sory is installed to the rear of the vehicle
■Operation of the RCTA function
The RCTA function uses radar sensors to detect vehicles approaching from the
right or left at the rear of the vehicle and alerts the driver of the presence of such
vehicles by flashing the outside rear view mirror indicators and sounding a buzzer.
RCTA function

2004-5. Using the driving support systems
RC350/RC300 Owner's Manual
and release the switch.
The “Traction Control Turned Off” will be
shown on the multi-information display.
Press the switch again to turn the sys-
tem back on.
■Turning off both TRAC and VSC sys-
tems
To turn the TRAC and VSC systems off,
press and hold the switch for more
than 3 seconds while the vehicle is stopped.
The VSC OFF indicator light will come on
and the “Traction Control Turned Off” will
be shown on the mult i-information display.
*
Press the switch again to turn the sys-
tems back on.
*: On vehicles with PCS (Pre-Collision
System), pre-collision brake assist,
pre-collision braking, and steering con-
trol (performed through cooperative
control of PCS and LDH) (if equipped)
will also be disabl ed. The Pre-Collision
System warning light will come on and a
message will be displayed on the
multi-information display. ( P.166)
■When the message is displayed on the
multi-information display showing that
TRAC has been disabled even if the
switch has not been pressed
TRAC is temporary deactivated. If the infor-
mation continues to show, contact your
Lexus dealer.
■Operating conditions of hill-start assist
control
When the following four conditions are met,
the hill-start assist control will operate:
●The shift lever is in a position other than P
or N (when starting off forward/back-
ward on an upward incline).
●The vehicle is stopped.
●The accelerator pedal is not depressed.
●The parking brake is not engaged.
●Engine switch is turned to IGNITION
ON mode
■Automatic system cancelation of
hill-start assist control
The hill-start assist control will turn off in any
of the following situations:
●The shift lever is moved to P or N.
●The accelerator pedal is depressed.
●The parking brake is engaged.
●2 seconds at maximum elapsed after the
brake pedal is released
●Engine switch is turned to off
■VGRS is disabled when
VGRS may stop operat ing in the following
situations.
In this event, the steering wheel may move
from its straight forward position, but it will
return when the system restarts.
●When the steering wheel is operated for
an extended period of time while the
vehicle is stopped or is moving very
slowly
(on vehicles with LDH, DRS is disabled
together with VGRS)
●When the steering wheel has been held
fully to the left or right
The center position of the steering wheel
may change when VGRS is disabled. How-

2014-5. Using the driving support systems
RC350/RC300 Owner's Manual
4
Driving
ever, the position will return to normal after
VGRS is reactivated.
■When the battery is disconnected (vehi-
cles with VGRS)
The steering wheel may move from its
straight forward position, but this will be
corrected automatically when driving.
■Sounds and vibrations caused by the
ABS, brake assist, VS C, TRAC, hill-start
assist control and VGRS systems
●A sound may be heard from the engine
compartment when the brake pedal is
depressed repeatedly, when the engine is
started or just after the vehicle begins to
move. This sound does not indicate that a
malfunction has occurred in any of these
systems.
●Any of the following conditions may
occur when the above systems are oper-
ating. None of these indicates that a mal-
function has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard also after the vehicle comes to a stop.
• The brake pedal may pulsate slightly after
the ABS is activated.
• The brake pedal may move down slightly after the ABS is activated.
■EPS, VGRS and DR S operation sound
When the steering wheel is operated, a
motor sound (whirring sound) may be
heard. This does not indicate a malfunction.
■Automatic reactivation of TRAC/VSC
systems
After turning the TRAC and VSC systems
off, the systems w ill be automatically
re-enabled in the following situations:
●When the engine switch is turned off
●If only the TRAC system is turned off, the
TRAC will turn on when vehicle speed
increases
If both the TRAC and VSC systems are
turned off, automatic re-enabling will not
occur when vehicle speed increases.
■Reduced effectiveness of the EPS sys-
tem
The effectiveness of the EPS system is
reduced to prevent the system from over-
heating when there is frequent steering
input over an extended period of time. The
steering wheel may feel heavy as a result.
Should this occur, re frain from excessive
steering input or stop the vehicle and turn
the engine off. The EPS system should
return to normal within 10 minutes.
WARNING
■The ABS does not operate effectively
when
●The limits of tire gripping performance
have been exceeded (such as exces-
sively worn tires on a snow covered
road).
●The vehicle hydroplanes while driving
at high speed on wet or slick roads.
■Stopping distance when the ABS is
operating may exceed that of normal
conditions
The ABS is not designed to shorten the
vehicle’s stopping di stance. Always main-
tain a safe distance from the vehicle in
front of you, especially in the following
situations:
●When driving on dirt, gravel or
snow-covered roads
●When driving with tire chains
●When driving over bumps in the road
●When driving over roads with potholes
or uneven surfaces
■TRAC/VSC may not operate effec-
tively when
Directional control and power may not
be achievable while driving on slippery
road surfaces, even if the TRAC/VSC
system is operating. Drive the vehicle
carefully in conditions where stability and
power may be lost.

2195-2. Using the air conditioning system
RC350/RC300 Owner's Manual
5
Interior features
●During use, various odors from inside and
outside the vehicle may enter into and
accumulate in the air conditioning sys-
tem. This may then cause odor to be
emitted from the vents.
●To reduce potential odors from occur-
ring:
• It is recommended that the air condition-
ing system be set to outside air mode
prior to turning the vehicle off.
• The start timing of the blower may be
delayed for a short period of time imme-
diately after the air conditioning system is
started in automatic mode.
■Air conditioning filter
P.273
■Air conditioning system refrigerant
●A label regarding the refrigerant of the
air conditioning system is attached to the
hood at the location shown in the follow-
ing illustration.
●The meaning of each symbol on the label
are as follows:
■Customization
Some functions can be customized.
( P.349)
Caution
Air conditioning system
Air conditioning system
lubricant type
Requires registered tech-
nician to service air condi-
tioning system
Flammable refrigerant
WARNING
■To prevent the windshield from fog-
ging up
●Do not use during cool air
operation in extremely humid weather.
The difference between the tempera-
ture of the outside air and that of the
windshield can cause the outer surface
of the windshield to fog up, blocking
your vision.
●Do not place anything on the instru-
ment panel which may cover the air
outlets. Otherwise, air flow may be
obstructed, preventing the windshield
defoggers from defogging.
■To prevent burns
●Do not touch the rear view mirror sur-
faces when the outside rear view mir-
ror defoggers are on.
●Do not touch the glass at lower part of
the windshield or to the side of the
front pillars when th e windshield wiper
de-icer is on.
NOTICE
■To prevent battery discharge
Do not leave the air conditioning system
on longer than necessary when the
engine is stopped.

2335-5. Using the other interior features
RC350/RC300 Owner's Manual
5
Interior features
vehicle) for 2 seconds and release
it. Repeat this sequence
(press/hold/release) up to 3 times
to complete programming.
If the garage door opener motor operates
when the HomeLink® button is pressed,
the garage door opener motor recognizes
the HomeLink
® signal.
■Enabling 2-way communication
with a garage door (only available
for compatible devices)
When enabled, 2-way communication
allows you to check the status of the
opening and closing of a garage door
through indicators in your vehicle.
2-way communication is only available
if the garage door opener motor used
is a compatible device. (To check
device compatibility, refer to
www.homelink.com.)
1 Within 5 seconds after program-
ming the garage door opener has
been completed, if the garage door
opener motor is trained to
HomeLink
®, both garage door
operation indicators will flash rap-
idly (green) and the light on the
garage door opener motor will
blink twice, indicating that 2-way
communication is enabled.
If the indicators do not flash, perform 2 and
3 within the first 10 presses of the
HomeLink
® button after programming
has been completed.
2 Press a programmed HomeLink®
button to operate a garage door.
3 Within 1 minute of pressing the
HomeLink
® button, after the
garage door operation has
stopped, press the “Learn” or
“Smart” button on the garage door
opener motor. Within 5 seconds of
the establishment of 2-way com-
munication with the garage door
opener, both garage door opera-
tion indicators in the vehicle will
flash rapidly (green) and the light
on the garage door opener motor
will blink twice, indicating that
2-way communication is enabled.
■Reprogramming a single
HomeLink
® button
When the following procedure is per-
formed, buttons which already have
devices registered to them can be
overwritten:
1 With one hand, press and hold the
desired HomeLink
® button.
2 When the HomeLink
® indicator
starts flashing (orange), continue to
hold the HomeLink
® button and
perform “Programming
HomeLink
®” 1(it takes 20 seconds
for the HomeLink
® indicator to
start flashing).
■Before programming
●Install a new battery in the transmitter.

283
RC350/RC300 Owner's Manual
7
7
When trouble arises
When trouble arises
.7-1. Essential informationEmergency flashers.................. 284
If your vehicle has to be stopped in an emergency .......................... 284
If the vehicle is submerged or water on the road is rising .. 285
7-2. Steps to take in an emergency If your vehicle needs to be towed........................................................ 287
If you think something is wrong ......................................................... 291
Fuel pump shut off system ..... 292
If a warning light turns on or a warning buzzer sounds ....... 293
If a warning message is displayed ......................................................... 301
If you have a flat tire.................. 305
If the engine wi ll not start ........312
If you lose your keys .................. 314
If the fuel filler door cannot be opened......................................... 314
If the electronic key does not operate properly ..................... 315
If the vehicle battery is discharged ......................................................... 317
If your vehicle overheats ........ 320
If the vehicle becomes stuck ........................................................ 324

2927-2. Steps to take in an emergency
RC350/RC300 Owner's Manual
Follow the procedure below to restart
the engine after the system is activated.
1Turn the engine switch to ACCES-
SORY mode or turn it off.
2 Restart the engine.
Fuel pump shut off system
To minimize the risk of fuel leakage
when the engine stalls or when an
airbag inflates upon collision, the
fuel pump shut off system stops the
supply of fuel to the engine.
Restarting the engine
NOTICE
■Before starting the engine
Inspect the ground under the vehicle.
If you find that fuel has leaked onto the
ground, the fuel system has been dam-
aged and is in need of repair. Do not
restart the engine.

3167-2. Steps to take in an emergency
RC350/RC300 Owner's Manual
■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.275)
■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

3227-2. Steps to take in an emergency
RC350/RC300 Owner's Manual
5Add coolant if necessary.
Water can be used in an emergency if
coolant is unavailable.
Engine (RC350/RC300 AWD)
 Engine (RC300)
 Intercooler (RC300)
6 Start the engine and turn the air
conditioning system on to check
that the radiator cooling fans oper-
ate and to check for coolant leaks
from the radiator or hoses.
The fans operate when the air conditioning
system is turned on immediately after a
cold start. Confirm that the fans are oper- ating by checking the fan sound and air
flow. If it is difficult to check these, turn the
air conditioning system
on and off repeat-
edly.
(The fans may not operate in freezing tem-
peratures.)
7 If the fans are not operating:
Stop the engine immediately and
contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the
nearest Lexus dealer.
WARNING
■When inspecting under the hood of
your vehicle
Observe the following precautions.
Failure to do so may result in serious
injury such as burns.
●If steam is seen coming from under the
hood, do not open the hood until the
steam has subsided. The engine com-
partment may be very hot.
●Keep hands and clothing (especially a
tie, a scarf or a muff ler) away from the
fans and belts. Failure to do so may
cause the hands or clothing to be
caught, resulting in serious injury.