2018 LEXUS RC350 audio

3836-1. Maintenance and care
6
Maintenance and care
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
NOTICE
■Cleaning detergents
●Do not use the following liquids, as they may discolor the vehicle interior or cause
streaks or damage to painted surfaces:
• Center Display: Organic substances such as benzine or gasoline, alkaline solu-
tions, and alcohol
• Seats: Alkaline solutions, organic substances such as thinner or benzine, and alco- hol
• Other parts: Organic substances such as benzine or gasoline, alkaline or acidic
solutions, dye, and bleach
●Do not use polish wax or polis h cleaner. The instrument pane l’s or other interior part’s
painted surface may be damaged.
■Preventing damage to leather surfaces
Observe the following precautions to avoid damage to and deterioration of leather
surfaces:
●Remove any dust or dirt from leather surfaces immediately.
●Do not expose the vehicle to direct sunlight for extended periods of time. Park the
vehicle in the shade, especially during summer.
●Do not place items made of vinyl, plastic, or containing wax on the upholstery, as they
may stick to the leather su rface if the vehicle interior heats up significantly.
■Water on the floor
Do not wash the vehicle floor with water.
Vehicle systems such as the audio system ma y be damaged if water comes into contact
with electrical components such as the au dio system above or under the floor of the
vehicle. Water may also cause the body to rust.
■When cleaning the inside of the windshield
Do not allow glass cleaner to contact the lens. Also, do not touch the lens. ( P. 247)
■Cleaning the inside of the rear window
●Do not use glass cleaner to clean the rear window, as this may cause damage to the
rear window defogger heater wires or antenna. Use a cloth dampened with luke-
warm water to gently wipe the window clean. Wipe th e window in strokes running
parallel to the heater wires or antenna.
●Be careful not to scratch or damage the heater wires or antenna.

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.

5247-2. Steps to take in an emergency
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
Start the engine of the second vehicle. Increase the engine speed slightly and
maintain at that level for approximatel y 5 minutes to recharge the battery of
your vehicle.
Open and close any of the door of your vehicle with the engine switch off.
Maintain the engine speed of the second vehicle and start the engine of your
vehicle by turning the engine switch to IGNITION ON mode.
Once the vehicle’s engine has started, remove the jumper cables in the exact
reverse order from which they were connected.
Once the engine starts, have the vehicle inspected at your Lexus dealer as soon
as possible.
■Starting the engine when the battery is discharged
The engine cannot be started by push-starting.
■To prevent battery discharge
●Turn off the headlights and the audio system while the engine is off.
●Turn off any unnecessary electrical components when the vehicle is running at a low
speed for an extended period , such as in heavy traffic.
■Charging the battery
The electricity stored in the battery will disc harge gradually even when the vehicle is not
in use, due to natural discharge and the draini ng effects of certain electrical appliances. If
the vehicle is left for a long time, the battery may discharge, and the engine may be
unable to start. (The battery recharges automatically during driving.)
■When recharging or replacing the battery
●In some cases, it may not be possible to un lock the doors using the smart access system
with push-button start when the battery is discharged. Use the wireless remote control
or the mechanical key to lock or unlock the doors.
●The engine may not start on the first attempt after the battery has recharged but will
start normally after the second attempt. This is not a malfunction.
●The engine switch mode is memorized by the vehicle. When the battery is recon-
nected, the system will return to the mode it was in before the battery was discharged.
Before disconnecting the battery, turn the engine switch off.
If you are unsure what mode the engine switch was in before the battery discharged, be
especially careful when reconnecting the battery.
5
6
7
8

611
Index
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
What to do if...
(Troubleshooting) .................................612
Alphabetical index.................................. 616
Refer to the “NAVIGATIO N AND MULTIMEDIA SYSTEM
OWNER’S MANUAL” for informat ion regarding the equipment
listed below.
• Navigation system
• Audio/video system • Lexus parking assist monitor
•Lexus Enform

617Alphabetical index
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
Alarm ............................................................ 80
Anchor brackets ...................................... 60
Antennas (smart access system
with push-button start) ......................156
Anti-lock Brake System (ABS).........312 Warning light .......................................453
Approach warning............................... 275
Armrest .................................................... 356
ASC (Active Sound Control)....... 223, 224
Assist grip ................................................358
Audio system
*
Automatic headlight leveling system .....................................................227 Warning light .......................................454
Automatic High Beam ....................... 228
Automatic light control system....... 225
Automatic transmission .......................213 If the shift lever cannot be shifted from P ............. 219
M mode ................................................... 216
Paddle shift switches ............... 215, 216
Average fuel economy .............................136, 137, 138
Average vehicle speed ........................136 Back-up lights
Replacing light bulbs ....................... 434
Wattage .................................................553
Battery ...................................................... 408 Battery checking ............................... 408
If the vehicle battery is discharged .................................... 522
Preparing and checking before winter.................................................... 320
Warning light ....................................... 453
Blind Spot Monitor (BSM) ............... 290
Brake Fluid .......................................................... 407
Parking brake .......................................222
Warning light ....................................... 453
Brake assist ............................................... 312
Break-in tips ............................................. 193
Brightness control Instrument panel light control.......................................... 94, 100
BSM (Blind Spot Monitor) ............... 290 BSM function ....................................... 293
RCTA function .................................... 297
B
*: Refer to the “NAVIGATIO N AND MULTIMEDIA SYSTEM
OWNER’S MANUAL”.

626Alphabetical index
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
Maintenance
Do-it-yourself maintenance........... 391
General maintenance .....................387
Maintenance data ............................. 536
Maintenance requirements.......... 384
Maintenance system ......................111, 129
Malfunction indicator lamp .............. 453
Master warning light ........................... 455
Meter Changing the display............... 94, 100
Indicators................................................... 87
Instrument panel light control .......................................... 94, 100
Meters..................................................91, 96
Multi-information display ....... 103, 118
Operating the meter control switches ....................................... 106, 119
Settings ...............................................111, 129
Warning lights ........................................86
Warning message ............................ 460
Micro dust and pollen filter ..............338
Mirrors Inside rear view mirror ......................176
Outside rear view mirror defoggers .......................................... 338
Outside rear view mirrors .............. 178
Vanity mirrors ......................................354 Moon roof .................................................186
Door lock linked moon roof operation......................187
Jam protection function....................187
Operation............................................... 186
Multi-information display........... 103, 118 Audio system-linked ................ 103, 118
Drive information...................... 108, 122
Dynamic radar cruise control .....268
“F” content ............................................... 124
G-force .................................................... 127
Lap timer.................................................. 124
LDA (Lane Departure Alert with steering control) ................... 265
Navigation system-linked ..... 103, 118
Settings .............................................. 111, 129 switch settings........................ 111, 129
Switching the display ................106, 119
Torque distribution ............................. 126
Warning message.............................460
Navigation system
*
Noise from under vehicle ........................8
M
N

630Alphabetical index
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
Side mirrors ..............................................178
Adjusting and folding........................ 178
BSM (Blind spot monitor) ............ 290
Linked mirror function when reversing ..................................179
Mirror position memory .................. 166
Side turn signal lights ............................ 221 Replacing light bulbs ........................439
Turn signal lever ................................... 221
Side windows .......................................... 182
Slip indicator........................................... 454
Smart access system with push-button start .......................156 Antenna location ................................. 156
Entry functions ............................. 145, 151
Starting the engine ............................207
Snow mode ............................................... 214
Snow tires ................................................ 323
Spare tire.................................................. 489 Inflation pressure ............................... 548
Storage location ................................ 490 Spark plug ............................................... 544
Specifications......................................... 536
Speed indicator................................ 93, 99
Speedometer ......................................91, 96
Sport mode ...............................................301
Steering lock ............................................ 210
Column lock release .........................210
Steering wheel ........................................ 174 Adjustment.............................................. 174
Audio switches
*
Heated steering wheel ................... 344
Power easy access system .............166
Steering wheel position memory ..............................166
Stop lights Replacing light bulbs ....................... 439
Storage feature ..................................... 350
Stuck If the vehicle becomes stuck........ 532
Sun shade .................................................. 187
Sun visors................................................. 354

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”.