reset LEXUS RC350 2018 Owner's Guide

4146-3. Do-it-yourself maintenance
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
■How to initialize the tire pressure warning system
Park the vehicle in a safe place and turn the engine switch off.
Initialization cannot be performed while the vehicle is moving.
Adjust the tire inflation pressure to th e specified cold tire inflation pressure
level. ( P. 548)
Make sure to adjust the tire pressure to the specified cold tire inflation pressure
level. The tire pressure warning system will operate based on this pressure level.
Turn the engine switch to IGNITION ON mode.
Press and hold the tire pressure
warning reset switch until the tire
pressure warning light blinks
slowly 3 times.
Wait for a few minutes with the engine switch in IGNITION ON mode and
then turn the engine switch off.
◆Registering ID codes
The tire pressure warning valve and tran smitter is equipped with a unique ID
code. When replacing a tire pressure warning valve and transmitter, it is nec-
essary to register the ID code. Have the ID code registered by your Lexus
dealer.
1
2
3
4
5

4176-3. Do-it-yourself maintenance
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
6
Maintenance and care
■Situations in which the tire pressure warning system may not operate properly
●In the following cases, the tire pressure warning system may not operate properly.
• If non-genuine Lexus wheels are used.
• A tire has been replaced with a tire that is not an OE (Original Equipment) tire.
• A tire has been replaced with a tire that is not of the specified size.
• Tire chains etc. are equipped.
• An auxiliary-supported run-flat tire is equipped.
• If a window tint that affects th e radio wave signals is installed.
• If there is a lot of snow or ice on the vehi cle, particularly around the wheels or wheel
housings.
• If the tire inflation pressure is extr emely higher than the specified level.
• If tires not equipped with tire pressure warning valves and transmitters are used.
• If the ID code on the tire pressure warning valves and transmitters is not registered in the tire pressure warning computer.
●Performance may be affected in the following situations.
• Near a TV tower, electric power plant, gas station, radio station, large display, air-
port or other facility that generates st rong radio waves or electrical noise
• When carrying a portable radio, cellular phone, cordless phone or other wireless
communication device
If tire position information is not correctly displayed due to the radio wave conditions,
the display may be corrected by driving and changing the radio wave conditions.
●When the vehicle is parked, the time taken for the warning to start or go off could be
extended.
●When tire inflation pressure declines rapidly for example when a tire has burst, the
warning may not function.
■The initialization operation
●Make sure to carry out initialization afte r adjusting the tire inflation pressure.
Also, make sure the tires are cold before carryi ng out initialization or tire inflation pres-
sure adjustment.
●If you have accidentally turned the engine swit ch off during initialization, it is not neces-
sary to press the reset switch again as initialization will restart automatically when the
engine switch has been turned to IG NITION ON mode for the next time.
●If you accidentally press the reset switch when initialization is not necessary, adjust the
tire inflation pressure to the specified leve l when the tires are cold, and conduct initial-
ization again.
■When initialization of the tire pressure warning system has failed
Initialization can be completed in a few minutes. However, in the following cases, the set-
tings have not been recorded and the system will not operate properly. If repeated
attempts to record tire inflation pressure settings are unsuccessful, have the vehicle
inspected by your Lexus dealer.
●When operating the tire pres sure warning reset switch, the tire pressure warning light
does not blink 3 times.
●After carrying out the initializat ion procedure, the tire pressure warning light blinks for 1
minute then stays on after driving for 20 minutes.

4186-3. Do-it-yourself maintenance
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
WARNING
■When inspecting or replacing tires
Observe the following precautions to prevent accidents.
Failure to do so may cause damage to parts of the drivetrain as well as dangerous han-
dling characteristics, which may lead to an accident resulting in death or serious injury.
●Do not mix tires of different makes, models or tread patterns.
Also, do not mix tires of remarkably different treadwear.
●Do not use tire sizes other than those recommended by Lexus.
●Do not mix differently constructed tires (radial, bias-belted or bias-ply tires).
●Do not mix summer, all season and snow tires.
●Do not use tires that have be en used on another vehicle.
Do not use tires if you do not know how they were used previously.
●Vehicles with a compact spare tire: Do no t tow if your vehicle has a compact spare
tire installed.
●Vehicles with an emergency tire puncture repair kit: Do not tow anything if a tire that
has been repaired using the emergency tire puncture repair kit is installed. The load
on the tire may cause unexpected damage to the tire.
■When initializing the tire pressure warning system
Do not operate the tire pressure warning reset switch without first adjusting the tire
inflation pressure to the spec ified level. Otherwise, the tire pressure warning light may
not come on even if the tire inflation pressu re is low, or it may come on when the tire
inflation pressure is actually normal.
■Caution regarding interference with electronic devices
●Users of any electrical medical device ot her than implantable cardiac pacemakers,
cardiac resynchronization th erapy-pacemakers or implantable cardioverter defibril-
lators should consult the manufacturer of the device for information about its opera-
tion under the influence of radio waves.
Radio waves could have unexpected effects on the operation of such medical
devices.
●People with implantabl e cardiac pacemakers,
cardiac resynchronization therapy-pacemak-
ers or implantable cardioverter defibrillators
should not come within 17.7 in. (450 mm) of
the tire pressure warn ing system initiators.
The radio waves may affect the operation of
such devices.

4577-2. Steps to take in an emergency
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
7
When trouble arises
■SRS warning light
This warning light system monitors the airbag sensor assembly, front impact sensors, side
impact sensors (door), side impact sensors (front), side im pact sensors (rear), driver’s
seat position sensor, driver’s seat belt buckle switch, front passenger occupant classifica-
tion system, “AIR BAG ON” indicator light, “A IR BAG OFF” indicator light, front passen-
ger’s seat belt buckle switch, seat belt pretensioners, airbags, interconnecting wiring and
power sources. ( P. 41)
■Front passenger detection sensor, seat belt reminder and warning buzzer
If luggage is placed on the front passenger seat, the front passenger detection sensor
may cause the warning light to flash and the warning buzzer to sound even if a passenger
is not sitting in the seat.
■If the malfunction indicator lamp comes on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fu el 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 severa l trips, contact your Lexus dealer as soon as
possible.
■Electric power steering system warning light (warning buzzer)
When the battery charge becomes insufficien t or the voltage temporarily drops, the
electric power steering system warning li ght may come on and the warning buzzer may
sound.
■When the tire pressure warning light comes on
Check the tire inflation pressu re and adjust to the appropriate level. Pushing the tire
pressure warning reset switch will not tu rn off the tire pressure warning light.
■The tire pressure warning light may come on due to natural causes
The tire pressure warning light may come on due to natural causes such as natural air
leaks and tire inflation pressure changes caus ed by temperature. In this case, adjusting
the tire inflation pressure will turn off the warning light (after a few minutes).
■When a tire is replaced with the spare tire (if equipped)
The spare tire is not equipped with a tire pr essure 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 wa rning system may not function properly
 P. 417
■If the tire pressure warning light freque ntly comes on after blinking for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1 minute when the
engine switch is turned to IGNITION ON mo de, 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.

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 messageDetails/Actions

4807-2. Steps to take in an emergency
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
(If equipped)
Indicates that the engine oil should be changed. (After
the engine oil is changed and the message has been
reset.)
Check and change the engine oil, and oil filter by
your Lexus dealer. After chan ging the engine oil, the
message should be reset. ( P. 403)
Indicates that all maintenanc e is required to correspond
to the driven distance on the maintenance schedule
*.
 Comes on approximately 5000 miles (8000 km)
after the message has been reset. (The indicator will
not work properly unless the message has been
reset.)
Perform the necessary maintenance. Please reset
the message after the maintenance is performed.
( P. 385)
Indicates that the Automatic High Beam switch is
pressed while the headlights are in low beam.
 Turn the high beam on and press the Automatic
High Beam switch again.
Indicates that, since the VSC (Vehicle Stability Control)
system was turned off, the pre-collision braking and pre-
collision brake assist are stopped (The pre-collision
warning function will be operational)
 Turn the VSC on. ( P. 315)
Indicates that the PCS (Pre -Collision System) is tempo-
rarily unavailable
 When conditions improve, the system resumes
operation. If this message is displayed continuously,
have the vehicle inspected by your Lexus dealer.
Warning messageDetails/Actions

4827-2. Steps to take in an emergency
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
■Warning messages
The warning message illustrations used are intended as examples, and may differ from
the image that is actually displaye d on the multi-information display.
■Warning message in radar cruise mode
In the following cases, the warning message may not be displa yed even if vehicle-to-vehi-
cle distance decreases:
● When your vehicle and the vehicle ahead ar e traveling at the same speed or the vehi-
cle ahead is traveling more quickly than your vehicle
●When the vehicle ahead is traveling at a very low speed
●Immediately after cruise control speed is set
●At the instant the accelerator pedal is depressed
■The LDA (Lane Departure Alert with steering control) lane departure warning func-
tion
In the following situations, th e warning message will not be displayed even if a lane line is
crossed.
●When the vehicle speed deviates from the operating range of the LDA system func-
tions ( P. 266)
●When the lane lines cannot be recognized ( P. 267)
■Resetting the message indicating ma intenance is required (if equipped)
Make sure to reset the oil change system. ( P. 385, 403)
■Conditions that the tire pressure wa rning system may not function properly
 P. 417
■Warning buzzer
P. 457

620Alphabetical index
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
Doors...........................................................145
Automatic door locking and unlocking system.................... 148
Door lock .................................................147
Open door warning buzzer.......... 146
Open door warning light...............454
Outside rear view mirrors .............. 178
Side windows ........................................ 182
Drive info 1/Drive info 2/ Drive info 3 ................................. 108, 122
Drive information ........................ 108, 122 Resetting......................................... 106, 119
Drive-Start Control .................... 193, 218
Driver’s seat position memory ..........166
Driving.........................................................192 Break-in tips .......................................... 193
Correct driving posture .................... 32
Driving mode select switch ........... 301
Procedures ............................................ 192
Winter drive tips ................................ 320
DRS (Dynamic Rear Steering) .........312 Warning message ............................ 460
Dynamic radar cruise control ......... 268
Dynamic Rear Steering (DRS) .........312 Warning message ............................ 460 Eco drive mode.......................................301
Eco Driving Indicator ...................116, 132
Eco Driving Indicator Light......... 111, 129
Eco driving meter ....................................96
EDR (Event data recorder)................... 10
Elapsed time...................................108, 122
Electric Power Steering (EPS) ......... 313
Warning light ....................................... 454
Electronic key .......................................... 140 Battery-saving function ................... 158
If the electronic key does not operate properly ............................. 518
Replacing the battery .......................427
Emergency flashers .............................442
Emergency tire puncture repair kit................................................ 502E

628Alphabetical index
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
Radar cruise control (dynamic
radar cruise control) ........................ 268
Radiator .................................................... 406
Rear seats ..................................................164 Fold down the seatback .................. 164
Luggage security system ................ 152
Rear turn signal lights ........................... 221 Replacing light bulbs ........................ 432
Turn signal lever ................................... 221
Wattage ................................................. 553
Rear view mirror Inside rear view mirror ......................176
Outside rear view mirrors .............. 178
Rear window defogger ...................... 338
Refueling .................................................... 241 Capacity ................................................ 540
Fuel types .............................................. 540
If the fuel filler door cannot be opened ......................... 243
Opening the fuel tank cap............. 243
Remote Touch
*
Replacing Electronic key battery ...................... 427
Fuses.........................................................429
Light bulbs ............................................. 432
Tires ......................................................... 489
Reporting safety defects for U.S. owners...................................600
Resetting the message indicating maintenance is required ................385
Rev indicator ..................................... 93, 99
Rev peak ...........................................93, 100 Seat belt reminder light ..................... 455
Seat belts .....................................................34
Automatic Locking Retractor ........ 36
Child restraint system installation ............................................. 58
Cleaning and maintaining the seat belt ....................................... 382
Emergency Locking Retractor................................................ 36
How to wear your seat belt............. 34
How your child should wear the seat belt .......................................... 36
Pregnant women, proper seat belt use ..........................................37
Reminder light and buzzer ...........455
Seat belt extender ................................ 36
Seat belt guide ....................................... 35
Seat belt pretensioners...................... 35
SRS warning light .............................. 453
RS

631Alphabetical index
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
Switches
Active rear wing switch ..................307
ASC (Active Sound Control) switch.................................................... 223
Audio remote control switches
*
Automatic High Beam system ....228
BSM (Blind spot monitor) switch................................................... 290
Cruise control switch...................... 268
Door lock switches .............................147
Driving mode select switch ........... 301
Driving position memory switches ................................................ 166
Emergency flashers switch ........... 442
Engine switch .......................................207
Fog light switch ................................... 232
Garage door opener switches .............................................. 359
Heated steering wheel switch....................................................344
Ignition switch ......................................207
Intuitive parking assist switch ........ 281
LDA (Lane Departure Alert with steering control) switch ....264
Light switches ...................................... 225
Meter control switches ........... 106, 119 Moon roof switches .......................... 186
Outside rear view mirror
switches ................................................178
Paddle shift switches............... 215, 216
Power door lock switch ................... 147
Power window switches ..................182
Rear window and outside rear view mirror defoggers
switch ...................................................338
Seat heater switches ........................ 345
Seat ventilator switches .................. 346
Snow mode switch ............................. 214
“SOS” button ....................................... 370
Talk switch
*
Telephone switches*
Tilt and telescopic steering control switch .................. 174
Tire pressure warning reset switch ..................................................... 414
Trunk opener main switch .............. 152
Trunk opener switch ........................... 151
TVD (Torque Vectoring Differential) switch .......................... 310
Vehicle-to-vehicle distance button ....................................................274
VSC OFF switch ................................. 314
Window lock switch ..........................182
Windshield wiper and washer switch ......................... 233
Windshield wiper de-icer switch ................................................... 339
*: Refer to the “NAVIGATIO N AND MULTIMEDIA SYSTEM
OWNER’S MANUAL”.